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Home My WebLink About20080062.tiff Pt smott,uc, God • (Seta) L F- a Q a a Q LL • 2 C !L C W C Z cC 0O XU O Zw al Z A O • "e 2008-0062 • WASTEWATER UTILITY PLAN for RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT r yam, mil, • i, 1 LOCATED IN WELD COUNTY, COLORADO May 2007 Revision No. 1 TABLE OF CONTENTS • Executive Summary v SECTION 1.0-Introduction 1-1 1.1 Background 1-1 1.2 Facilities Plan Summary 1-2 1.3 Implementation 1-2 1.4 Summary of Utility Plan Structure 1-3 SECTION 2.0—General Planning 2-1 2.1 Feasibility of Consolidation of Facilities 2-1 2.2 Wastewater Reuse 2-2 2.3 Biosolids 2-2 2.4 Environmental Components 2-2 2.4.1 Phase I Environmental Site Assessment 2-2 2.4.2 Ecological Assessment 2-3 2.4.3 Archeological Review 2-3 2.4.4 Air Quality 2-3 2.4.5 Stormwater Runoff 2-4 SECTION 3.0—Wastewater Characterization 3-1 3.1 Service Area Designations 3-1 3.2 Population Datasets & Forecasts 3-1 • 3.3.1 District Phasing Plan 3-1 3.3 Wastewater Flow Projections 3-2 3.3.1 Infiltration & Inflow Analysis 3-4 3.3.2 Influent Characteristics 3-4 3.3.3 Industrial Pretreatment Program 3-4 3.4 Treatment Works 3-5 3.4.1 Process System 3-5 3.4.1.1 Preliminary Treatment 3-5 3.4.1.2 Biological Treatment 3-7 3.4.1.3 Disinfection 3-7 3.4.1.4 Staging Ponds 3-8 3.4.1.5 Biosolids Treatment and Handling 3-9 3.4.2 Infrastructure Sizing and Staging 3-9 3.4.3 Location and Siting 3-9 3.4.4 Biosolids Handling 3-10 3.4.5 Schematic of Treatment Works 3-10 3.4.6 Odor Control Considerations 3-10 3.4.7 Emergency Power Supply 3-10 3.5 Air Quality Permit 3-10 3.6 Stormwater Management Plan 3-1 1 3.7 Site Characterization Report 3-11 3.8 Collection System 3-1 I 3.8.1 Major Lift Stations 3-12 • 3.8.2 Interceptors 3-12 3.9 Maps 3-12 3.9.1 Treatment Plant Site Envelope 3-12 • 3.9.2 Service Areas 3-12 3.9.3 Collection System 3-12 SECTION 4.0—Water Quality Characterization 4-I 4.1 Water Quality of Receiving Stream 4-1 4.2 TMDLs and Waste Load Allocations 4-1 4.3 Watershed Issues 4-2 4.4 Level of Treatment 4-2 4.5 Maps 4-3 4.5.1 Watershed and Receiving Stream 4-3 4.5.2 Impaired Waters 4-4 SECTION 5.0—Alternative Analysis 5-1 5.1 Treaunent Works S-I 5.1.1 No Action 5-1 5.1 .2 Consolidation of Facilities 5-I 5.1 .3 Aerated Lagoon System 5-3 5.1.4 Extended Aeration Package Plant 5-3 5.1.5 Sequencing Batch Reactor 5-4 5.1.6 Membrane Bioreactors 5-5 5.1.7 Conventional Activated Sludge with Extended Aeration 5-6 5.2 Selection Criteria and Recommended Alternative 5-7 5.3 Level of Treatment 5-9 • 5.4 Public Participation in Selection 5-10 SECTION 6.0—Management& Financial Plans 6-1 6.1 Establishment of RCWSMD 6-1 6.1.1 Zoning of Pioneer Communities 6-1 6.2 Management Structure and Agreements 6-2 6.2.1 The District Board 6-2 6.2.2 Service Agreements between Districts 6-3 6.3 Rules and Regulations of the District 6-3 6.4 Wastewater Construction Management Plan 6-4 6.5 Financial Management Plan 6-4 6.6 Revolving Loan Interest 6-6 6.7 Implementation Schedule 6-6 LIST OF TABLES Table 1-1: Preliminary Implementation Schedule for Pre-Design, Design, and Construction of the New Wastewater Treatment Facility for RCWSMD Table 1-2: Projected Growth Scenario with Wastewater Service by RCWSMD Table 3-1: District Phasing Plan for the Pioneer Metropolitan Districts Table 3-2: Summary of Design Influent Wastewater Flows for Each Treatment Plant Expansion Table 4-1: Water Quality Standards for Box Elder Creek, Segment 3a of the Middle South Platte River Basin Table 4-2: Preliminary Effluent Limits for the Proposed RC WWTF for Discharge to Box Elder Creek ii Table 5-1: Selection Criteria for to Facilitate Treatment Alternatives Selection for Resource • Colorado Water and Sanitation Metropolitan District Table 5-2: Cost Analysis for Various Treatment Alternatives for Resource Colorado Water and Sanitation Metropolitan District Table 6-I: Board of Directors for RCWSMD Table 6-2: Proposed Tap Fees for Phase I of RCWSMD Wastewater and Reuse Facility Table 6-3: Preliminary Wholesale Wastewater Rates and Reuse Rates per Thousand Gallons Table 6-4: Preliminary Schedule for Preliminary Engineering, Design. and Construction of the New 0.30 MGD Wastewater Treatment Facility for Resource Colorado Water and Sanitation Metropolitan District LIST OF FIGURES Figure 3-I : Service Area Map Figure 3-2: Domestic Wastewater Flow Projections to the Resource Colorado WWI 1 Figure 3-3: WWTF Location Map Figure 3-4: Process Flow Schematics fiuure 3-5: FEMA Flood Map Figure 3-6: Preliminary Site Layout Figure 3-7: Preliminary Process Pipe Profile Figure 3-8: Proposed Sewer Collection System Figure 4-1 : Major Basin Map APPENDICES • APPENDIX A—References APPENDIX B—Technical Support Information Tab#1: Legal Description & Evidence of Site Ownership Tab#2: Rules& Regulations of the Resource Colorado Water and Sanitation Metropolitan District Tab#3: Phase I Environmental Site Assessment Tab#4: Harkins Property Ecological Assessment Tab #5: Class I Archeological Literature Review for the I larkins Property, Weld County, Colorado Tab #6: Geotechnical Due Diligence Study for Harkins Farms Property, Weld County, Colorado Tab#7: Preliminary Effluent Limits Tab#8: Planning&Zoning Information Tab#9: Consolidation Information Tab#10: User Charge Study Analysis Tab#11: CDPS General Permit: Stormwater Discharges Associated with Construction Activity (Sample) Tab#12: Construction Stormwater Management Plan (Sample) Tab#13: CDPS General Permit: Stormwater Discharges Associated with Light Industrial Activity (Sample) Tab #I4: Site Stormwater Management Plan (Sample) • Tab #I5: Conceptual Interceptor Sizing Tab 1116: Opinions of Probable Construction Costs iii Tab#17: Operation and Maintenance Costs Tab#18: Calculations Tab#19: Preliminary Geotechnical Study for Site Development. Wastewater Treatment Plant, Pioneer Development Tab#20: Wastewater Service Agreements Proposed Term Sheet Tab#21: District Phasing Map Tab#22: Consolidation Cost Estimate Tab #23: Future Weld County Zoning Information • S iv EXECUTIVE SUMMARY • This Wastewater Utility Plan for Resource Colorado Water and Sanitation Metropolitan District (RCWSMD) was developed using the North Front Range Water Quality Planning Association (NFRWQPA) Guidance Document and follows the suggested outline therein. Resource Colorado Water and Sanitation Metropolitan District (RCWSMD) was formed in 2004 and conditionally approved as a wastewater management/operating agency in 2005. RCWSMD is charged with providing wastewater service to the Pioneer Community Development being planned in southern Weld County. centered around the intersection of Weld County Roads 49 and 22. This 5,668 acre mixed-use development is projected to accommodate 30.600 residents in 10.070 residential units by 2026. The proposed wastewater treatment plant site to serve this development will be located in the NW!/4, N W1/4 of Section 32, T3N, R64W and the first 0.30 million-gallon-per-day (MGD)phase is projected to begin receiving flows by September 2008. While the proposed WWII' will initially serve the Pioneer development, it is possible and likely that • other entities, such as Keenesburg, and urban pockets within the Box Elder Creek and adjacent drainage basins, may desire wastewater service in the future. RCWSMD plans to re-use its wastewater to augment water supply plans in the Box Elder Creek drainage basin and adjacent drainage basins, and irrigate landscaped areas at the plant site, on Pioneer common areas, and possibly on residential lots. Biosolids generated at the WWTF will be beneficially re-used. Growth and flow projections for the service area warrant that three facility phases are sensible. The initial phase will include two sub-phases, Phase I-A and Phase I-B. The physical structures of Phase I, which is slated for 2008, will be constructed to handle 0.6 MGD, however will only be equipped with the equipment necessary to handle 0.3 MGD. In Phase 1-B, slated for construction in 2011, additional biological treatment components will be added to increase the capacity to 0.6 MGD. The second, 1.2 MGD phase, is slated for 2014, while the final expansion to 3.6 MGD, will occur around 2017. This WWUP, however, only focuses on the initial 0.30 MGD (Phase 1-A) treatment facility. Several treatment options were evaluated on the basis of economic viability, scheduling, and treatment performance. Aerated lagoons will not be able to meet the treatment limits. and consolidation to • Hudson's. Keeneshurg's_ or l.ochbuic's treatment plants are not economically viable. and in some cases. v fail to meet the schedule need for service in the fall of 2008. An extended aeration "package plant" was • considered but maintenance issues and expansion questions hindered its selection. A sequencing batch reactor(SBR) system was considered. however, the"upsized" disinfection and downstream facilities made this option less desirable. A conventional extended aeration facility was also considered; however, these plants require a larger plant footprint and can he more difficult to operate. Given the stringent effluent ammonia limits as set forth in the Preliminary Effluent Limits (PELs) as determined by the Colorado Department of Public Health and Environment (CDPHE). and the fact that RCWSMD desires to produce a high-quality effluent to be used for augmentation and irrigation, the selected treatment technology is a state-of-the-art membrane bioreactor (MBR) facility. The estimated capital cost for a plant of this type is just over$6.670.000. RCWSMD has obtained conditional Site Application approval from Weld County Planning and Zoning and Weld County Department of Health and Environment, and plans to obtain Site Application approval from the North Front Range Water Quality Planning Association (NFRWQPA) and the CDPHE— Water Quality Control Division. Thereafter, RCWSMD will submit a Process Design Report to the CDPHE— WQCD for approval and begin design of the facility in earnest. RCWSMD will also obtain an effluent • surface water discharge permit from CDPHE before treatment operations commence. RCWSMD has the financial capacity to construct the proposed facility and operate it effectively, while costs for operating and maintaining the facility will be borne by its users. • vi SECTION 1.0 • INTRODUCTION The purpose of this Wastewater Utility Plan (WWUP) is to provide a strategy for Resource Colorado Water and Sanitation Metropolitan District (also referred to as "RCWSMD" or the "District" throughout this document) to determine how wastewater service will be provided for the urbanized portions of its service area in southwestern Weld County. Initial planning focuses on serving the Pioneer communities development. The North Front Range Water Quality Planning Association (NFRWQPA) as the area 208 group requires each permitted wastewater treatment system to have a WWUP in place. This document meets this requirement and follows the Association's Utility Plan Guidance document approved on June 22. 2000. 1.1 Background As approved by the Weld County Commissioners, RCWSMD was duly organized on November 29, 2004 to "plan, design, acquire, construct, install,finance, operate and maintain potable and non-potable water supply systems, purification, storage, transmission and distribution systems as well as sanitary sewer systems and stormwater management for property in Weld and Adams • County"1. RCWSMD will provide bulk wastewater services to Pioneer Communities Inc. (Pioneer), the owner of 5,668 acres of property located in southwestern Weld County generally at the intersection of County Road 49 (a.k.a. "Kersey Road") and C.R. 22, north of the Towns of Hudson and Keenesburg, and north of Interstate 76 (1-76). The site is in the Box Elder Creek Drainage Basin. This area has easy accessibility to the E-470 tollway, Denver International Airport, and several major employment corridors such as downtown Denver, Commerce City/Stapleton and the Greeley area. The land uses of the Weld County Comprehensive Plan Amendment include Residential, Neighborhood Commercial/Mixed Use, and Agricultural. In addition, there will be dedicated active and passive Open Space throughout the property. RCWSMD _ Wastewater Utility Plan(Rev.1) May 2007 I-1 JSC Project No.690-01 1.2 Facilities Plan Summary • This document serves as the Wastewater Utility Plan for RCWSMD. Please refer to the Executive Stuntman, at the beginning of this document for a summary of the information that is detailed within. 1.3 Implementation RCWSMD anticipates that the first phase of homes will begin producing wastewater flows in late 2008. For the planning purposes of this WWUP, we have provided an implementation schedule in Table 1-1. Table 1-1: Preliminary Implementation Schedule for Pre-Design, Design, and Construction of the New Wastewater Treatment Facility for RCWSMD Item Date • Submit Preliminary Effluent Limit Request July 27, 2006 • Submission of Site Application to Weld Co. Public November 16, 2006 Health; Weld Co. Planning; and NFRWQPA • • Anticipated Approval of Wastewater Utility Plan by April 26, 2007 NFRWQPA • Submission of Site Application to CDPHE April 27,2007 • Anticipated Site Approval May 26, 2007 • Design/Build Team Project Commencement August 17, 2007 • Submission of Process Design Report to CDPHE September 14, 2007 • Anticipated PDR Approval October 19, 2007 • Wastewater Treatment Plant Groundbreaking October 26 2007 • Substantial Completion September 26, 2008 • Start-up, Demonstration and Commissioning October 24, 2008 • First Anticipated Domestic Wastewater Flows November 1, 2008 u • ' Pioneer Comprehensive Plan Amendment, Rev.October 2005, page I-7. RCWSMD Wastewater Utility Plan(Rev. I) May 2007 1-2 JSC Project No.690-01 The following table, Table 1-2, shows the projected growth scenario for RC. • Table 1-2: Projected Growth Scenario with Wastewater Service by RCWSMD Cumulative Other ERUs Average Single Family Multi-Family End of Year Residential (Commercial, Population Wastewater Residences Residences Units Schools, etc.) Flow fgpd] 2008 85 68 _ 17 - 3.9 258 23,015 2009 222 178 44 10.I 675 60,111 2010 393 314 79 17.9 1,195 106,412 2011 _ 646 517 129 29.4 1,964 _--_174,916 2012 951 761 190 _.. 43.2 2,891 __ 257,501 2013 1,358 1,086 272 61.8 4,128 367,703 2014 1,818 1.454 364 _ - 82.7 __ -5,527 492,257 2015 2,335 1,868 467 _ _ 106.2 7,098 632,244 _ -- 2016 2,904 2.323 581 132.0 8.828 786,311 2017 3,528 2.822 706 1624 10,725 955,271 2018 4,211 3,369 842 191.5 12,801 1,140,205 2019 4,955 3.964 991 "5 3 15,063 1,341,657 2020 5,744 4.595 1.149 261 2 I 17.462 1,555,293 2021 6,560 5,248 1,312 298.3 19,942 1,776,240 2022 7,400 5,920 1,480 336.5 22,496 2,003,685 2023 _ 8,120 6,496 1,624 _ 369.2 24,685 2,198,639 2024 8,840 7,072 1,768 402.0 26,874 2,393,592 2025 9,560 7,648 1,912 434.7 29,062 2,588,545 2026 10,070 8,056 2,014 457.9 30,613 2,726,637 • The flow contributions as shown in this table are from the Pioneer development only. The District anticipates that other users within RCWSMD's service area will desire wastewater service after the treatment plant begins operation. Flow projections can be updated as necessary as different entities request service. 1.4 Summary of Utility Plan Structure This WWUP is organized into six major sections: Introduction; General Planning; Wastewater Characterization; Water Quality Characterization; Alternative Analysis; and Management & Financial Plans. These sections are further divided into multiple sub-sections. Please refer to the Table of Contents for this information. • RCWSMD Wastewater Utility Plan(Rev.() May 2007 1-3 JSC Project No.690-01 SECTION 2.0 • GENERAL PLANNING 2.1 Feasibility of Consolidation of Facilities There are three existing sewer services near the proposed initial service area and WWTF, for which consolidation may he a possibility. The Town of Keenesburg's WWTF is permitted for 0.10 MGD and currently receives flows of approximately 0.139 MGD, exceeding their permitted capacity. Thus, it will he necessary for Keenesburg to either increase the size of their existing treatment facility to accommodate flows, or they may wish to request service from RCWSMD. The Town of Hudson's WWTF is permitted for 0.197 MGD, and currently receives flows of approximately 0.130 MGD. The Town of Lochbuie is currently permitted for 1.0 MGD, but is in the process of expanding to 2.0 MGD and has additional phasing plans in place for 5.0 MGD and 10 MGD expansions. In 2006. Resource Colorado initiated discussions with Hudson. Keenesburg, and the Weld County Commissioners regarding possible consolidation to the proposed RCWSMD plant; however, no final decisions or agreements have been made to date. Additionally, Resource Colorado met individually with representatives of the Town of Hudson and Keenesburg on February 8, 2007 to further enlighten these communities on the plans of RCWSMD's proposed WWTF, and to extend the offer to serve them in the future. Resource Colorado subsequently detailed this information in letters to the Towns dated March 8, 2007. Copies of these letters are included in Appendix B —Tab 9. Given water rights issues, the fact that the terminus of the gravity sewers and the pumpback reuse lines in the Pioneer development will be more than five miles away from the Keenesburg and Hudson treatment plants, and more then 15 miles to the Lochbuie treatment plant, consolidation is not a feasible option'. These alternatives would require pumping of wastewater to a selected facility with sufficient and compliant capacity and returning treated effluent via a pump-back line to RCWSMD (so that appropriated waters could be re-used). The three communities have had the opportunity to review Pioneer's Comprehensive Plan amendment and provided response letters, copies of which are included in Appendix B- Tab 9. CDPHE Policy No. 5 delineates the factors to be considered to evaluate the feasibility of consolidation;a copy of this • document is included in Appendix B- Tab 9. RCWSMD Wastewater utility Plan(Res. 1/ May 2007 2-1 JSC Project No.690-01 2.2 Wastewater Reuse • The Pioneer development plans on having a dual distribution system to all residential lots. Therefore, reuse water will be used for irrigation at the plant site, on Pioneer common areas, and on residential lots. Resource Colorado plans to reuse all non-tributary water to the fullest extent. During normal operation, all non-tributary water will be stored either onsite or at a service provider's (i.e. Pioneer Regional Metropolitan District) storage facilities. Resource Colorado's effluent will meet the reuse requirements for residential irrigation as set forth in CDPIIE Regulation 84—Reclaimed Water Control Regulation. Chemical addition may be incorporated to compensate for higher sodium concentrations, which are often found in municipal wastewater. Discharge to Box Elder Creek will occur only when there is no storage available for non- tributary water, or as augmentation is needed for tributary source water. 2.3 Biosolids Beneficial reuse of biosolids will be achieved via land application. Resource Colorado's strategy for biosolids disposal will be to contract with a licensed hauler who will land apply biosolids on their permitted site(s). The District is also considering biosolids land application to the 1,400 acres of farmland located within the Pioneer development, however, this farmland would need to • be properly permitted according to State and Federal biosolids regulations. During the initial phase, the District will utilize the services of a licensed contract biosolids hauler to properly land-apply the biosolids. 2.4 Environmental Components Resource Colorado does not intend to apply for a state revolving loan or utilize state or federal grant monies for the creation of the wastewater utility infrastructure, and therefore the requirements of the National Environmental Protection Act (NEPA) are not applicable. However, Pioneer has performed a substantial amount of environmental due diligence during the planning efforts for the proposed development. 2.4.1 Phase I Environmental Site Assessment A Phase I Environmental Site Assessment (ESA) was conducted by A.G. Wassenaar Geotechnical and Environmental Consultants (dated February 28, 2005) before the property was purchased by Pioneer. This ESA was performed in general conformance with the scope of work and limitations of ASTM Practice E1527-00. The major findings • RCN'SMI) A%astewater Utility Plan(Rev. 1) May 2007 2-2 JS€Project No.690-01 showed the following: • ➢ That inert debris and small quantities of chemical substances were stored within various structures on the purchase acreage; ➢ Water and irrigation wells that will not be put into use by RCWSMD should be properly abandoned in accordance with State of Colorado regulations; ➢ Sixty-nine oil /gas well locations are reported by the Colorado Oil and Gas Conservation Commission for the development property and fifty-two wells were operating at the time of the ESA (February 2005). The ESA recommended limited subsurface investigation at these sites to determine the presence or absence of significant soil and/or groundwater contamination. 2.4.2 Ecological Assessment The objective of the Ecological Assessment was to identify and characterize habitats for species that are, or may be listed under the Endangered Species Act. The Ecological Assessment concluded that the 5,668 acre property does not have habitat capable of • supporting the threatened or endangered (T&E)species listed in the report and thus, no impacts to T&E species will occur. 2.4.3 Archaeological Review The Archaeological Review concluded a moderate to high likelihood of encountering historic sites within the 5,668 acre development due to the level of historic activities such as homesteading, ranching and agriculture. Because the project is not implicated with Federal or State actions, however, the developer is under no legal obligation to mitigate any adverse effects to cultural resources (prehistoric or historic). The developer may choose, however, to notify a qualified archaeologist if a buried deposit is discovered during construction activities. 2.4.4 Air Quality The first phase of air permitting involves submission of an Application for Construction Permit and Air Pollutant Emission Notices (APEN); one for each emission source. Only one application is necessary for each facility- The CDPHE Air Pollution Control • RCWSMD Wastewater Utility Plan(Key. I) May 2007 2-3 JSC Project No.690-01 Division then evaluates the emissions. For purposes of APEN reporting, a source can be • an individual emission point or group of similar emission points. The Division has guidelines available on source grouping in Regulation No. 3, Part A. Both APENs and permit requirements are triggered by uncontrolled actual emission rates. Uncontrolled actual emissions are based on the requested production/operating rate, and assume that no air pollution control equipment is used. In general, an APEN is required for an emission point with uncontrolled actual emissions of any criteria pollutant equal to or greater than 2 tons per year. Criteria pollutants are volatile organic compounds (VOCs). particulate matter less than 10 microns (PM 10), Total Suspended Particulates (TSP), Carbon Monoxide. Sulfur Dioxide (SO2), Nitrogen Oxides (NOx), Lead (200 pounds per year), and other criteria pollutants (fluorides, sulfuric acid mist, hydrogen sulfide, total reduced sulfur. reduced sulfur compounds, and municipal waste combustor emissions). Based on the emission calculations shown in the APEN, the Division may require that a Construction Permit Application for a New Source be sent to them. During construction, the contractor will be required to utilize best management practices • to keep fugitive dust to a minimum. 2.4.5 Stormwater Runoff A stonnwater permit will be required, both for construction activity, and once the site is established and operating. Development of Stormwater Management Plans (SWMPs) is required by these permits and must he followed during construction and site operation. The general contractor and ultimately, the plant operating staff will be required to utilize best management practices, delineated in the SWMPs, to reduce the discharge of pollutants into nearby surface water from stonnwater runoff. • RCWSMU Wastewater Utility Plan(Res. I) May 2007 2-4 JSC Project No.690-01 SECTION 3.0 • WASTEWATER CHARACTERIZATION 3.1 Service Area Designations The wastewater utility service area (WUSA) to be served by RCWSMD's proposed mechanical WWTP is 5,668 acres in size and is shown on Figure 3-I. Also shown on this figure is the existing WUSA for Hudson, Keenesburg and 1.ochbuie. as well as Hudson's proposed WUSA. The dotted grey area generally north and east of Hudson is being described as a "Wastewater Service Coordination Planning Area" (WSCPA). The WSCPA is the area located between Hudson, Keenesburg and the proposed Pioneer development, for which no wastewater utility set-vice provider has been defined. RCWSMD plans to work with Hudson and Keenesburg in determining how best to serve the wastewater needs of future customers in this area. 3.2 Population Datasets & Forecasts As shown in Table 1-2, RCWSMD's wastewater treatment facility expects to provide service to over 30,600 people by the year 2026, meeting the needs of the Pioneer development at built-out. RCWSMD's WWTF; however, will be constructed in at least three phases providing an ultimate • capacity to serve other potential customers within the Wastewater Service Coordination Planning Area. 3.2.1 District Phasing Plan RCWSMD will be providing wholesale wastewater services to Pioneer Regional District, which in turn will collect wastewater from Pioneer Metropolitan Districts Numbers 1 through 6. The expected development of the individual Metropolitan Districts is shown below in Table 3-1, and the Preliminary District Map is located in Appendix D—Tab 21. RCWSMD is the only 208 Operating Agency that will serve within the Pioneer Community's established boundaries. • RCMSMD wastewater Utility Plan(Rev.1) May 2007 3-1 JSC Project No.690-01 It / - ti/: r 1 ' • r�Y r" / .--....-, ' `, .._ •� I RESOURCE COLORADO • •_.�' PROPOSED WWTF / / WASTEWATER UTILITY L........:n LOCATION / �-- SERVICE AREA (WUSA) r t :.rzr\ • \tick I 1' _ WASTEWATER SERVICE 1'. COORDINATION AREA / • t • � KEENESBURG'S �' by EXISTING WUSA - . HUDSON'S PROPOSED ,-- ; iv.) I /• • is WASTEWATER UTILITY •; `t j I - SERVICE AREA "J ' • HUDSON'S er EXISTING WUSA ti I\0 (I..• -r. •'..•. ) T , ,,,. , , _J Res-Pin 4 ' • • ': ‘,tai. �' yam, - , t t f 2 ..'7f1 � iMed C}i`I HtseWO I FOB .• .\ �..ItcbnA .111 .. . { 'f} e E �J 1 ITL- L. -. - p J/ LOCHBUIE'S wok R t.\ '� �, i I /� - EXISTING WUSA 'l. -- 3500 0 3500 r !', �.� C L /i c_ , r ., ..�-•:,.I . _ ,>„ ice'--;-- ., _ LEGEND MEMMal RESOURCE COLORADO'S EXISTING WUSA LOCHBUIE'S EXISTING WUSA KEENESBURG'S EXISTING WUSA WASTEWATER SERVICE COORDINATION AREA HUDSON'S EXISTING WUSA HUDSON'S PROPOSED WUSA DATE: 2/20/2007 WA SCALE: 1" = 3500' SERVICE AREA MAP • Jacobson Helgoth PROJ. NO.: 690-01 RCWSMD CONSUL -YAWS DRAWN: LIMB WASTEWATER UTILITY PLAN CHECKED:7S WELD COUNTY, COLORADO FILE NO.: 690-01_FIG3-1(R2).DWG FIGURE 3-1 (R2) Table 3-1: District Phasing Plan for the Pioneer Metropolitan Districts Pioneer Development District ERUs per Timeline Phases Number(s) District 1 No. 1 2500 0.68 mgd 2008-2014 2 No. 2 1500 1.09 mgd 2012-2018 3 No. 3 and 6 3000* 1.90 mgd 2016-2022 4 No.4 1500 2.31 mgd 2020-2024 5 No. 5 1500 2.72 mgd 2022-2026 * No.3 District has 2000 ERUs and No. 6 District has WOO ERUs 3.3 Wastewater Flow Projections For the purpose of this Utility Plan, and for future design. RCWSMD will be using a population density of 3.2 people per single family detached residence and a wastewater generation rate of 85 gallons per capita per day (gpcd)t. This equates to 272 gpd generated per single family equivalent (SFE). Multi-family residences will use a density of 2.4 people per residence. Also, institutions such as schools and commercial centers will contribute additional wastewater flow. • We have estimated that these non-residential entities will account for 457.9 equivalent residential units (ERUs) at build-out, or approximately 124,550 gallons of wastewater flow per day. Figure 3-2 shows the wastewater flow projections from 2008 to 2026, based on growth numbers for the Pioneer development. For the purposes of this WWUP, the growth rate of the non-residential entities has been proportionally tied to the project population growth rate. • ' NFRWQPA Utility Plan Guidance, page 26 RCWSMD Wastewater Utility Plan tRev.1) May 2007 3-2 JSC Project No.690-01 • Figure 3-2: Domestic Wastewater Flow Projections to the Resource Colorado WWTF -o goo oe v °°o rn 3 `4, • °o °o° Phase III w .s°° Increase capacity '°°° to 3.6 MGD ry r> >° Phase II in °o Increase capacity ea '°o to 1.2 MGD Phase I-B Inc O rease o S°O° Phase I-A to Ob MGDaPacity °o Initial Capacity 300,000 gpd ---- o 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 2026 2028 Year • The maximum peaking factor (peak-hourly flow) for the new facility can be calculated using the following relationship: PF = 3.65 I(AverageFlow)°16' Equation 3-I (NFRWQPA UPG, pg. 25) Thus, the peak-hourly flow factor of the 0.3 MGD phase (Phase I-A), will be 4.46; at the 0.6 MGD phase (Phase I-B), the peak hourly flow factor will be 3.97, at the 1.2 MGD phase (Phase II), the peak hourly flow factor will be 3.54; and at the 3.6 MGD phase (Phase III), the peak hourly flow factor will be 2.95. Minimum flow factors during these phases will range from 0.2 to 0.35, respectively, while the peak-month peaking factor will range from 1.3 in the initial phase to 1.12 at the final phase. The peaking factors used in the design for Phases II and III may be adjusted as actual wastewater flow data becomes available during Phase I. Table 3-2 summarizes these flow projections. 2 Lone Tree Creek WWTP Expansion Design Influent Wastewater Flows thttp://ceae.colorado.edu/-silversdcven4434- 5434/CU-I:FEW W"IP%20Description.pdt) • RC %SMD to astewater Utility Plan(Rev.I) May 2007 3-3 JSC Project No.690-01 • Table 3-2: Summary of Design Influent Wastewater Flows for Each Treatment Plant Expansion Peak-Month Minimum-Hour Expansion Phase Annual Average Peak-Hour Flow (Year) Flow [MCI)] Flow [MGD]/P.F. Flow I M Gll]/P.F. [MGDVMFF Phase I-A(2008) 0.3 0.39/1.3 1.34/4.46 0.06/0.2 Phase I-B (2011) 0.6 0.78/1.3 2.382/3.97 0.12/0.2 Phase II (2014) 1.2 1.44/1.2 4.25/3.54 0.36/0.3 Phase III (2017) 3.6 3.96/1.1 10.62/2.95 1.26/0.35 PF=Peaking Factor, MFF=Minimum Flow Factor 3.3.1 Infiltration and Inflow Analysis The wastewater collection system within the Pioneer development will be a "tight', newly constructed system, thereby minimizing infiltration and inflow. The residential wastewater flow factor of 85 gpcd used for planning in this document includes a 10 gpcd I/I component. 3.3.2 Influent Characteristics Given the trend towards water-conserving appliances in homes, wastewater strengths for newer developments have been increasing. The initial wastewater treatment phase will be designed around an influent wastewater with characteristics of 300 mg/L 5-day biochemical oxygen demand (BODs);40 mg/L ammonia (NH3); and 250 mg/L total suspended solids (TSS). These values fall within the range of concentrations suggested for medium to high strength domestic wastewater3, and are the values that have been used by the CDPHE in determining the Preliminary Effluent Limits for the proposed facility. Actual wastewater concentrations from Phase I will be used in the design of Phases II and III. 3.3.3 Pretreatment Program No industrial wastewater flows arc anticipated within the Pioneer development at this time; and therefore, no Industrial Pretreatment Program will be developed. In the event that any industries are added to the development or RCWSMD agrees to treat industrial 3 Metcalf and Eddy, Wastewater Engineering— 7rea(ment, Dispoea/, and Reuse,401 Edition, 2003, pg. 186• RCWSMD Wastewater Utility Plan(Rev. I) May 2007 34 JSC Project No.690-01 waste from another entity, an Industrial Pretreatment Program will be written and enforced at that time. Should Hudson, Keenesburg, or another source provider agree to have RCWSMD provide wastewater treatment service for them in the future. they will he required to follow the provisions of Article 7: Limitations on Discharge and Article 8: Prep cament Requirements of the RCWSMD Rules and Regulations (Appendix B —Tab 2). All commercial businesses within the development will comply with Article 7 and Article 8 of the RCWSMD Rules and Regulations as well. 3.4 Treatment Works The wastewater treatment facility will he initially designed in Phase I-A to treat an average domestic wastewater flow of 300,000 gallons per day, however, the structures will be constructed to handle 600.000 gpd. In Phase 1-B, slated for 2011, the necessary equipment will be added to the WWTF to increase the capacity to 600,000 gpd. In 2014, an expansion to 1.2 MGD will take place with an expansion to 3.6 MDG in 2017. 3.4.1 Process System • The treatment process planned for the initial 0.3 MGD phase is a membrane bioreactor (MBR)process. This process can achieve effluent quality that will meet or exceed the expected discharge permit parameters. The very high-quality effluent can be beneficially re-used within the Pioneer development and at the WWTF for irrigation purposes. Raw wastewater from three collection trunk sewers converge at a manhole located in the southwest corner of the WWTF site. The wastewater will flow through a manual coarse screen with one inch openings to remove large debris and trash, and then into a pump station consisting of three pumps (2 duty, 1 standby). The pump station will deliver the raw wastewater from the southwest corner of the site to the northeast corner of the site, where the headworks building and biological treatment processes will be located. 3.4.1.1 Preliminary Treatment The influent wastewater will be pumped from the pump station to a metering manhole. The wastewater will flow through this manhole equipped with a three- • RCWSMD Waste..ater Gtilit. Plan l Re.. I) May 2007 3-5 JSC Project No.690-01 inch Parshall flume nested inside a six-inch Parshall flume. A three-inch Parshall • flume can be used to effectively measure flows between 0.018 MGD and 0.743 MGD. As the WWTF's capacity increases, the three-inch Parshall flume will be removed to reveal the six-inch Parshall flume. The six-inch Parshall flume can be used to measure flows between 0.035 MGD and 2.53 MGD. An ultrasonic measuring device will be installed with the Parshall flume so that flows can be automatically and accurately recorded. Grit and solids removal will follow the flow metering to ensure accurate measurements of influent wastewater volumes. The WWTF will include the construction of a headworks building consisting of a step screen, a manual bypass screen and a vortex grit removal system. The first unit process following the influent flow measurement will he an automatic step screen, which will be inserted within a concrete influent channel. The unit will have 1/4-inch slots to remove rags and other materials that can cause problems in downstream units. Paralleling the main influent channel will be a bypass channel which will house a manual bar screen. The bypass channel will allow for • diversion of the wastewater around the step screen during emergency or maintenance periods. Next, the wastewater will encounter a vortex grit removal system. This process system consists of a grit chamber, a mixer, a grit pump and classifier. Flow to the vortex grit chamber through a straight stretch of channel minimizes the turbulence in the wastewater stream. Before the wastewater enters the vortex grit chamber, it will be pushed against the bottom by a baffle. The vortex grit chamber will be equipped with a mixer that causes the wastewater to circulate vertically inside the chamber. The combination of both processes allows for the grit solids to settle, while the lighter organic materials are lifted and conveyed to downstream processes. The settled grit solids will then be removed from the center hopper by a grit pump, and sent to the grit classifier, which will be located in the Headworks Building. The grit classifier will separate the liquid portion from the grit by means of a hydrocyclone, which washes and then delivers the grit to a dumpster. • RCA'SJID wastewater Utility Plan(Rev.1) May 2007 3-6 JSC Project No.690-01 Because the grit will he removed after influent flow is measured, influent flow • measurements will not he skewed. 3.4.1.2 Biological Treatment After the wastewater is pumped up through the Headworks Building, it will flow into two primary clarifiers. The primary clarifiers will be used to reduce the amount of suspended solids and BOD prior to the biological treatment. After primary clarification. the wastewater will flow into two MBRs. The MBRs are split into anoxic tanks. pre-aeration tanks, and MBR tanks. The membranes reside directly in the mixed liquor. and provide a physical barrier for solids. Blowers supply the necessary air that is required for BOD consumption and nitrification. Permeate pumps pull clarified water through the membranes, and the permeate will be disinfected using ultraviolet (UV) light. The waste activated sludge from the MBR basins will be sent to two aerobic digesters. The aerobic digesters will provide stabilization of the biosolids and will serve as storage vessels until the wasted solids can be dewatered and disposed of properly. During Phase II and Ill of the project, primary clarifiers and additional MBR basins will be constructed to handle the additional capacity. 3.4.1.3 Disinfection During Phase I of construction. a UV system will be installed for disinfection of the wastewater effluent. The UV disinfection system will be placed in a channel with the lamps parallel to the effluent flow. A modulating downward opening weir gate will maintain the level of effluent above the top of the lamps. The weir gate will be controlled by an ultrasonic level sensor(with manual overriding operators) mounted over the channel. The UV disinfection system will be designed with a constriction baffle in order to allow the system to be easily expanded to accommodate the ultimate plant flows. In addition to UV disinfection, a liquid sodium hypochlorite system will be installed at the WWTF. Sodium hypochlorite could be used for disinfection should the UV system be out of service during an emergency or for maintenance. During periods where • RCWSMD Wastewater Utility Plan(Rev.1) May 2007 3-7 JSC Project No.690-01 sodium hypochlorite is used, a dechlorination chemical, such as sodium • thiosulfate, will he injected prior to discharge to Box Elder Creek. Disinfected effluent could also be stored and distributed for construction and irrigation purposes. During Phase 11 and Phase ill of the project, both UV disinfection and chlorination will he used. Sodium hypochlorite will be injected into UV disinfected effluent that is diverted for reuse. Chlorination of the effluent water will decrease the potential for biological growth in the reuse water piping. A dual set of pumps will allow effluent to be pumped into the non-potable water system. The UV disinfection system will produce effluent capable of meeting the permitted disinfection requirements. 3.4.1.4 Staging Ponds Effluent that has been disinfected using UV and/or sodium hypochlorite will flow from the UV Building to a lined staging pond(s). During Phase I, two 750,000 • gallon staging ponds will be constructed near the center of the WWTF site and will provide for approximately five days of storage at annual average design flow. From the lined staging pond, the effluent may be used for irrigation at the plant site and on Pioneer common areas, or sent to Box Elder Creek to augment water supply plans in the Box Elder Creek drainage basin and adjacent drainage basins. During Phase II and III of the project, additional staging ponds will be constructed. RCWSMD desires to have three to five days of capacity in the staging ponds during all phases of the project. Irrigation will not occur during the winter months, and therefore it will not be necessary to keep the liquid in the staging ponds mixed to prevent freezing. Also, liquid draw-off will occur near the bottom of the pond (approximately eight feet below the surface) so freezing will not be an issue. If odor control during winter months becomes necessary, RCWSMD will install mixers to prevent the ponds from stratifying. During normal operation. only one of the staging lagoons will be used for to store treated effluent. The other lagoon will normally remain empty, so that the pond • RCWSMI) Wastewater Utility Plan(Rev.I) May 2007 3-8 JSC Project No.690-01 may be used to store raw wastewater during periods of maintenance or in an emergency. In the event of an emergency, raw wastewater may be pumped to the influent staging pond, where it could later flow back to the headworks to be treated. 3.4.1.5 Biosolids Treatment and Handling During Phase I, biosolids will be aerobically digested in concrete basins to stabilize the organic matter. This process requires the mean cell residence time (MCRT) to be between 40 to 60 days (dependent on temperature within the basin) to achieve the necessary volatile solids reduction. A supernatant return line will be constructed to deliver the supernatant back to the headworks. The aerobic digesters will also be used for biosolids settling and thickening to optimize water reduction prior to hauling by the biosolids contractor. Phase II and III will require additional digester capacity to provide the proper residence time and volatile solids reduction. During Phase III, a Solids Handling • Building may be constructed that will contain a unit (such as a belt filter press or centrifuge) to thicken and dewater the biosolids. This will greatly reduce the volume of biosolids materials and decrease hauling costs for the District. 3.4.2 Infrastructure Sizing and Staging Pioneer has identified six sanitary sewer basins within the UPA. The conceptual sewer main sizes range from a minimum of 18-inches to the largest line at 60-inches. These basin sewer mains will connect at sensible locations with major interceptors, and then flow to the wastewater treatment plant. These lines will be sized to handle peak flows from the various sanitary sewer basins. It is anticipated that the collection system terminus will enter a lift station 10 to 15 feet below grade at the WWTF and be pumped to the Headworks Building. 3.4.3 Location & Siting The WWTF will be located on 40.8 acres in the NW 1/4, NW 1/4 of Section 32, T3N, R64W. The proposed location of the WWTF is shown on Figure 3-3. The discharge • RCWSMD R astewater Utility Plan tRev.1) May 2007 3-9 JSC Project No.690-01 BOX ELDER CREEK PROPOSED PROPOSED WWTF LOCATION DISCHARGE LOCATION EFFLUENT DISCHARGE ' 1 H i • LINE LOCATED WITHIN COUNTY RIGHT-OF-WAY i ' Lkr'rir N kI cv 4 1485 1000 0 i ../ DATE: 9/13/2006 N SCALE: 1" = 2500' WWTF LOCATION MAP Jacobson Helgoth DRAWN-PR0J. NO.: 690-01 COLORADO WASTEWATER UTILITY PLAN • C O N S U L T A N T S CHECKED:MJB WELD COUNTY, COLORADO FILE NO.: 690-01_Fig3-3.DWG FIGURE: 3-3 location to Box Elder Creek is also shown. The proposed discharge location to Box Elder • Creek is located inside the 100-year floodplain; however the all of the WWTF processes and structures will he located outside the floodplain. The WWTF would be able to discharge to Box Elder Creek even during a 100-year flood event. 3.4.4 Biosolids Handling Initially, waste biosolids will be wet-hauled from the plant using a contract hauler and beneficially reused at one of their permitted facilities. As the WWTF expands, the waste biosolids will be thickened and dewatered and removed off-site for beneficial reuse. The District may continue to maintain a contract for this work or they may perform the hauling and spreading themselves. 3.4.5 Schematic of Treatment Works A conceptual process flow diagram of the WWTF is shown in Figure 3-4. Phases 1 through Ill, at 0.3, 1.2 and 3.6 MGD capacities, respectively, are represented. • 3.4.6 Odor Control Considerations As the WWTF expands to its ultimate capacity of 3.6 MGD in 2017, controlling offensive odors from the WWTF will become a more sensitive issue. Some of the plant's unit processes may be within the 1,000 foot setback limit as defined by CDPHE Policy No. 7 and thus odor control may be required. It is also the intention of RCWSMD to maintain a positive relationship with surrounding neighborhoods and business by mitigating offensive odors. Passive odor control measures will be utilized during the Phase I construction such as an enclosed headworks and screenings area. During the Phase 11, the MBR basins will be covered. At Phase III, the Solids Handling Building will be enclosed and active odor control methods such as a biofilter, biotowers or air ionization may be considered at that time. 3.4.7 Emergency Power Supply During Phase IA and IB, and 200 kW diesel generator will be located at the WWTF. The generator shall be a self-starting generator that would provide power to the equipment required to maintain permit compliance. As the plant increases in capacity. additional • RCWSDID Wasten Ater L hilly flan(Rev. I) May 2007 3-10 JSC Project No.690-01 i A 1' cr- leIC? 9 v OM CO i z tIl _fa F e� -uA g III _= 111 ='g 7' m mm m m� _ _ 4111 cn c n m m o m c�i m g r- - ~ cn o mi n o 33 0 m v c zg � m a `p^n 3 � o 'III o n z W A b y z _ - m n n a K m ' -1 z z `- z z ti m ti nCl) z = z p a $ `R Fn sp aa; \ m aA O Aa i t]J Ag ;a � lnCo 71 o nm AC- if t t irt4j • mc m; -'�.Z or, s� 9 m r I rj m i io o oo mo III y Am a= Pc T 1I, KT A0 gg po .. �� ao c� .. _I oN o= D ig2 ICI o a"R �m �ac FN �� i� r - mo ve �; o e 11 2 c� o ,4 zs Pi Lam ric �� ar^ z v Dr".� N mo / xo �_✓ as so ® DATE:9/1/2006 �_� SCALE: NOT TO SCALE PROCESS FLOW SCHEMATICS • )acobso 1H th PRQI. NO.:690-01 RESOURCE COLORADO CONSULTANTS DRAWN:LMB WASTEWATER UT ILI IY PLAN CHECKED:MJB WELD COUNTY,COLORADO FILE NO; 690-01_Fg3-4.DWG FIGURE 3-4 standby power will he located at the WWTF. The generator will comply with the • requirements set forth by the CDPHE Air Pollution Control Division and the Air Pollutant Emission Notices. 3.5 Air Quality Permit The WWTF may require a state-issued air operating permit depending on the facility's potential to emit certain air pollutants. RCWSMD will estimate these emissions after the Process Design Report has been completed and approved by the CDPHE-WQCD. 3.6 Stormwater Management Plan Prior to the start of construction. the selected general contractor will be required to obtain a stormwater permit through the CDPHE (C'DPS General Permit: Stormwater Discharges Associated with Construction Activity) and develop and comply with a construction site stormwater management plan (a sample is included in Appendix B). As the first wastewater treatment plant phase nears completion, RCWSMD will apply for a light industrial stormwater permit and establish a SWMP for a stabilized site. • 3.7 Site Characterization Report Figure 3-5 shows areas where 100-year flood waters would encroach. According to this map, a small portion of the northwest section of Section 32 could be affected. This is not considered a critical area and will not affect treatment processes or effluent quality. Engineered flood management structures and mitigation measures taken during roadway and infrastructure development of the community will reduce the possibility of harm during a 100-year flood event at the WWTP. No other natural hazards exist on the site that would preclude the WWTF from being constructed at this location. A soils testing report is included in Appendix B of this W W UP. 3.8 Collection System The community sewer collection system for Pioneer will consist of building connections, lateral sewers, collector lines and one or more interceptors. RCWSMD has identified six sanitary sewer basins within the EPA. The conceptual sewer main sizes range from a minimum of 18-inches to • RCWSMD Wastewater Utility Plan{Rev. 11 May 2007 3-1 1 JSC Project No.690-01 • I _ , Nk‘Illik. 4 ' .. • Y-rv,- Q-;< S 9,511 .,-.. . vn-LA. a a r ## e 7 iag 5 4ki ,,,N%,„\-4\ ,..e-cww.,=-...-r--.-1r''''n4r,".-' - - ... ,_ F. ...... letli.c.b"\ x, O O o • 11‘.- ., :I \ • to o / F n I i a a -- / r ti m O / I F L. _ __ ti co p. m A n /. m __. - .____ _.. -,_.��_. __ a r.. rn cm 2 2OOm ir,- ADZ Ya oopg�zd = 3 �I o I 90 c P- 666 z mae m a= .G 3 g v DATE.08/16/06 ��I SCALE. I' 3500' FEMA FL OOD MAP LJ • JaC'son Hejgoth PR0J. NO. 690-01 RESOURCE COI ORADO CONSULTANTS DRAWN:DJH WASTEWATER UTILITY PLAN CHECKED:LNG WELD COUNTY,COLORADO FILL NO.. 690-01 Rq3-5.DWG FIGURE: 3-5 the largest line at 60-inches. • 3.8.1 Major Lift Stations It is anticipated that the wastewater from the trunk line will enter a lift station 10 to 15 feet below grade. Wastewater would then he pumped to the headworks of the WWTP and flow by gravity within the plant. No other major lift stations are anticipated within the Pioneer development through build-out. however. if RCWSMD agrees to receive flows from outside the WUSA, lift stations may he required to pump wastewater into Pioneer's collection system. 3.8.2 Interceptors Conceptual interceptor sizing information is contained in Appendix B. 3.9 Maps 3.9.1 Treatment Plant Site Envelope Figure 3-6 shows the treatment plant site envelope with a conceptual layout of buildings and unit processes. Figure 3-7 shows the proposed influent and effluent piping profile for • the WWTF. 3.9.2 Service Areas Both the Wastewater Utility Service Area and the Wastewater Service Coordination Planning Area are shown in Figure 3-1, presented previously. 3.9.3 Collection System A preliminary collection system map has been prepared for the proposed development, and is shown in Figure 3-8. It is anticipated the collection system will be relatively shallow, and that the sewers will not exceed ten feet deep. Areas in which trunks mains are not shown on Figure 3-8, specifically the south-central region of the development, are anticipated to be used for agricultural purposes. • RCwSMD Wastewater Utility Plan(Rev. 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I , ' • r' ; ' c-0,f r. �' �- 41 i q_.,/ . . • i -IX) o • ��mo=wCR5S� `x..,= rZi?" i / . f Dr1 - - m m .7------ .) .•••• - 1 In m 111 II. : m z I I ,..,, 0 rl I o 1 1 i t I OD J � � � IJ NJ NW W 0 v701717v 1D c sC Is. LI C - ,jC) U n OOOOOO 6 Z Z Z Z Z Z c' � � � � ..p � mrnmmmm (Cjnnnnnn nnn � � � � � � tnN � � DDD MMMM DDD n ggMMM L ' • - Z CD CD D -A -A -4 -' adC) C) CDCDCD 0 0 0 0 0 0 K c („1 (N (1 Z � C0OC7000 (T (l, U1 U1 f T1 -9 -r 11 71 LA-4 cM LA H LA H 11) v ,Jv - COcJ0 (0 X12323XIXI X) CD cD lD v ;* n n n A C) n c. - (7 ak as at ac at Q1 U1 -A W N -- ® DATE:11/1/2006 • SCALE: 1'= appp' PROPOSED SEWER COLLECTION SYSTEM Jacobson.Heksotb PRa NO:690-01 RESOURCE COLORADO CONSULTANTS DRAWN:w6 WASTEWATER UTILITY PLAN CHECKED:NJB WELD COUNTY,COLORADO FILE NO.. 690-01-FIGJ-8(R2).OWG _FIGURE 3-B (R2) SECTION 4.0 . WATER QUALITY CHARACTERIZATION 4.1 Water Quality of Receiving Stream The proposed location of the WWTF is the NW 1/4, NW '/a, Section 32, T3N, R64W. The WWTF will discharge to the Box Elder Creek,Segment 3a of the Middle South Platte River Basin, approximately three and a half miles downstream of the now-breeched Klug Lake. The stream is designated as "Use Protected" and classified as "Recreation Class 2, Warm Water Aquatic Life Class 2, and Agriculture". According to the CDPHE, Box Elder Creek has a low flow of zero, and no other permitted point sources were identified as dischargers to Box Elder Creek upstream of the proposed discharge location or downstream prior to the confluence with the South Platte River. Therefore, there is no dilution, no other sources of pollutants of concern. and the assimilative capacities are equal to the in-stream standards applied to the proposed WWTF effluent discharge. Pollutants with Table Value Standards (TVS) are not applicable to the proposed facility with the specified design flow. The water quality standards, as set forth by the Colorado Department of Health Water Quality Control Commission, Regulation No. 38, Classifications and Numeric Standards South Platte River Basin, Laramie River Basin, Republican River Basin, Smoky Hill River Basin are shown below in Table 4-1. Table 4-1: Water Quality Standards for Box Elder Creek Segment 3a of the Middle South Platte River Basin Numeric Water Quality Standards Physical and Biological Inorganic(mg/L) Metals =5.0mg/L,min_ NHt(ac)=TVS S(ch)=0.002mg/L As(ch)=100 pg/L(Tree) Fe(ch)=1000pg/L(Tree) Ni(ac/ch)=TVS pH=6.5-9.0 s.u_ NHdch)=RIO mg/L B(ch)=0.75 mg/L Cd(ac/ch)=TVS Pb(ac/ch)=TVS Se(ac/ch)=TVS F.Cori=2000/100 rnL C6(ac)=0019 mg/I. NO,=0.5 mg/L CdB(ac/ch)=TVS Mn(ch)=50 pg/L Ag(ac/ch)=TVS E Coll=630/100 mL Chichi=0.011 mg/L CrVI(ac/ch)=TVS Mn(ac)=TVS Zntac/ch)=TVS Cyanide(ac) 0.005 rng/l. Cu(adch)=TVS Hg(ch)=0.01pg/L(Too 4.2 TMDLs and Waste Load Allocations According to the CDPHE and U.S. EPA websites and the WQCD's 303(d)list, there is currently no total maximum daily load (TMDL) completed for Segment 3a of the Middle South Platte River Basin. The Waste Load Allocation (WLA) portion of the TMDL could be implemented in the future through the effluent limits in the discharge permit; however, since there is currently no • RCWSMD Wastes,aler Utility Plan lRe%.1) May 2007 4-1 JSC Project No.690-01 TMDL completed for Segment 3a, there is no associated WLA. • 4.3 Watershed Issues Middle South Platte River segment 03a (Horse Creek Reservoir): The CDPHE proposed that Horse Creek Reservoir be included on the Section 303(d) List of Water-Quality-Limited Segments Requiring TMDLs due to non-attainment of the assigned pH standard. The recommendation was based upon a representative dataset including four years of water quality monitoring results. The Water Control Commission has determined that inclusion of the Reservoir on the Section 303(d) List of Water-Quality-Limited Segments Requiring TMDLs for pH is appropriate and consistent with the Section 303(d) Listing Methodology, 2006 Listing Cycle. The Commission has determined that the Reservoir is not impaired with respect to the dissolved oxygen standard. It is worthy to note that Horse Creek Reservoir is approximately 13 to 15 miles upstream of the proposed wastewater treatment plant and thus, wastewater discharge would not impact the water quality within Horse Creek Reservoir. 4.4 Level of Treatment The proposed wastewater plant will be designed around the influent and effluent parameters shown in Table 4.2. The effluent parameters are taken from the Preliminary Effluent Limits (PELs) determined by the CDPHE, as established in Regulation No. 62—Regulations for Effluent Limits (a copy of this correspondence is included in Appendix B). The PEL letter from the CDPHE can be found in Appendix B. The ammonia limits listed in Table 4-2 are set forth by the CDPHE using the AMMTOX model. The AMMTOX model uses new ammonia criteria that were adopted into Regulation 31 by the Colorado Water Quality Commission (WQCC). The criteria is expected to become the standard for the receiving stream in March 2007, and the ammonia criteria will be effective in permits for the South Platte River Basin as early as October 2007. Because these new criteria are more strict then the current standards (developed by the Colorado Ammonia Model, CAM), the RCWSMD WWTF will be designed to meet AMMTOX effluent limits. Prior to final design of the wastewater facility, RCWSMD will engage in discussions with the CDPHE regarding the applicability of the PELs, and will seek adjustments per recommendations from the CDPHE. RE 1ASDID Wastewater Utility Plan(Rev.1) May 2007 4-2 ,ISC Project No.690-01 Table 4-2: Preliminary Effluent Limits for the Proposed RC WWTF • for Discharge to Box Elder Creek Parameter Influent Effluent Flow (MGD) 0.3 0.3 Peak Hourly Flow (MGD) (PF=4.46) 1.338 1.338 Minimum Flow (MGD) (MFF=0.25) 0.075 0.075 BOD5 (mg/L) 300 45/30a BOD5(% removal) -- 85 TSS (mg/L) 250 45/30' TSS (% removal) --- 85 Oil and Grease (mg/L) --- 10 (maximum) pH (s.u.) 6.5-9.0 Fecal Coliforms (#1100 ml) — 4000/2000° E. Coli (#1100 ml) --- 1260/6306 Total Residual Chorine (mg/L) -- 0.019/0.011` Total Ammonia(mg/L) 40 January --- 13/5.5` February -- 10/4.9" March -- 7.2/3.2" April --- 6.1/1.9" • May --- 8.0/2.2` June --- 10/1.7` July 8.1/1.6" August __- 8.8/1.8c September _- 11/2.8° October -- 10/3.6" November --- 13/6.3° December --- 8.7/3.9" a 7-day average and 30-day average, respectively. ° 7-day geometric mean and 30-day geometric mean, respectively. Daily maximum and 30-day average, respectively. Note: Ammonia Limits are based on AMMTOX model_ 4.5 Maps 4.5.1 Watershed and Receiving Stream Figure 4-1 shows the wastewater utility service area and ultimate planning area along with the Box Elder Creek watershed, other nearby watersheds, and the proposed WWTF location and discharge point. • RCWSMD Wastewater Utility Plan(Rev.1) May 2007 4-3 JSC Project No.690-01 BOX ELDER CREEK II qq/ BOX ELDER CREEK y 7, -: • PROPOSED LOCATIIONE 'f PROPOSED WASTEWATER r // i , UTILITY SERVICE AREA / " BEEBE SEEP UNNAMED CREEK - - / ra - . KEENESBURG • -- =. - JIM CREEK - -- , , --- .- -PROPOSED ULTIMATE --- PLANNING AREA i "'" HUDSON-I c. l / BOX ELDER CREEK I .^ '^ - HAYESMOUNT ., .. - - CREEK N a HORSE CREEK - M $ LEGEND .. _. .' PROPOSED ULTIMATE PLANNING AREA ' -PROPOSED WASTEWATER UTILITY SERVICE 1 AREA -. ____:_. `NILE 0 I`rµ1tfll E DATE.09/01/06 • JaootuonHe SCALE NOT TO SCALE MAJOR BASIN MAP RE oth PROJ NO 690 01 SOURCE COLORADO CONSUL 1 A N I S DRAWN:DJH WASTEWATER UTILITY PLAN CHECKED:MID WELD COUNTY.COLORADO FILE NOr. 690-01_E94-1 DWG FIGURE 4-1 • 4.5.2 Impaired Waters According to the U.S. EPA website and the PEE letter dated October 11, 2006 from the CDPHE. Box Elder Creek, Segment 3a of the Middle South Platte River Basin is not considered to be and Impaired Water. • • RCWSMD Wastewater Utility Plan(Res. It May 2007 4-4 JSC Project No.690-01 SECTION 5.0 • ALTERNATIVE ANALYSIS 5.1 Treatment Works In preparing this WWUP. several alternatives were investigated regarding the future wastewater treatment process for the District. The alternatives that were considered include No Action, Consolidation of Facilities. Aerated Lagoons, Extended Aeration Package Plant, Sequencing Batch Reactors (SBRs). Membrane Bioreactors, and Activated Sludge with Extended Aeration. For various reasons (described below) No Action, Consolidation of Facilities, and Aerated Lagoons were not considered viable options, and were therefore not evaluated in great depth. The four alternatives that were strongly considered were mechanical treatment facilities, including an Extended Aeration Package Plant, SBRs, MBRs and a Conventional Activated Sludge process with Extended Aeration. Each of these alternatives included a Headworks Building (complete with automatic step screen, bypass channel with manual bar screen, and grit removal) and an Administration/UV/Blower Building (complete with office, laboratory, UV disinfection, and an equipment room for blowers). • 5.1.1 No Action The "No Action" alternative is not an option for the Pioneer Community development. County, State, and Federal statutes require that wastewater treatment be provided. Also, with increasingly stringent water quality standards, a mechanical treatment facility is the most sensible treatment option. 5.1.2 Consolidation of Facilities As previously stated in this Utility Plan, there are existing sewer service areas near the proposed initial service area and WWTF. The Town of Lochbuie is currently permitted for 1.0 MGD, but is in the process of expanding to 2.0 MGD and has additional phasing plans in place for 5.0 MGD and 10 MGD expansions. The Town of Keenesburg's WWTF is permitted for 0.100 MGD, and currently receives flows of approximately 0.139 MGD. The Town of Hudson's WWTF is permitted for 0.197 MGD, and currently receives flows of approximately 0.130 MGD. Because Keenesburg is currently receiving more flow then is permitted. it is unfeasible for RCWSMD to consolidate with • RCWSMD Wastewater Utility Plan (Rev. 1) May 2007 5-1 JSC Project No.690-01 Keenesburg. Hudson is at approximately 65% capacity, and could not handle the • anticipated flows from RCWSMD without major redesign of the WWTF. Although the Lochbuie's WWTF could likely handle the wastewater generated by the Pioneer development, the location of the facility makes consolidation unfeasible and uneconomical. The WWTFs at Hudson, Keenesburg, and Lochbuie are all at elevations higher then the proposed RCWSMD WWTF, and lift stations would be required to convey the wastewater generated by the Pioneer development to any of the three towns. Consolidation with any of the towns would also require a pump-back line to RCWSMD so that appropriated waters may be reused. Capital cost estimates indicate that a pump station capable of pumping the wastewater from RC to any of the three towns would cost approximately $1.1 million, with an additional$65,000 per year for annual O&M costs. lludson's WWTF is approximately ten pipe-miles (considering likely right-of-ways) from the proposed RC WWTF, and estimates indicate that it would cost approximately $3.7 million to install approximately 52,000 feet of pipe. The total estimated capital cost • if Hudson were to treat the wastewater, and pump reuse water back to RCWSMD, is approximately $13.5 million. Keenesburg's WWTF is approximately eleven pipe-miles from the proposed RCWSMD WWTF, and estimates indicate that it would cost approximately $4.1 million to install approximately 57,000 feet of pipe. The total estimated capital cost if Keenesburg were to treat the wastewater, and pump reuse water back to RCWSMD, is approximately $14.6 million. Lochbuie's WWTF is approximately 17 pipe-miles (considering likely right-of-ways) from the proposed RC WWTF, and estimates indicate that it would cost approximately $6.5 million to install approximately 90,000 feet of pipe. The total estimated capital cost if Lochbuie were to treat the wastewater, and pump reuse water back to RCWSMD. is approximately $21.2 million. Due to the hydraulic capacities and the locations of the three plants. it is not feasible for RCWSMD to consolidate with any of the treatment facilities. • RCWSMD Wastewater Utility Plan tRev.11 May 2007 5-2 JSC Project No.690-01 It should be noted that RCWSMD has initiated discussions with the Towns of Hudson • and Keenesburg, and has met with the Weld County Commissioners regarding the possibility of receiving flows from either/or Hudson and Keenesburg to the proposed RC WWTF. Additionally, Resource Colorado met individually with representatives of the Town of Hudson and Keenesburg on February 8, 2007 to further enlighten these communities on the plans of RCWSMD's proposed WWII'. and to extend the offer to serve them in the future. Resource Colorado subsequently detailed this information in letters to the Towns dated March 8, 2007. Copies of these letters are included in Appendix B —Tab 9. 5.1.3 Aerated Lagoon System The aerated lagoon process would consist of constructing several new aerated earthen lagoons that could provide the necessary BOD5 removal and ammonia removal. It would also include the construction of earthen settling basins to provide solids settling prior to disinfection. Floating surface aerators would supply the mixing and oxygen requirements. • Due to the very low ammonia standards set forth by the CDPHE in the PELs, however, this is not considered to be a viable option. An aerated lagoon would very likely not be able to meet the ammonia and nitrate/nitrite standards during the colder winter months. Thus, this alternative was not considered further. 5.1.4 Extended Aeration Package Plant This package plant would be designed to work as an extended aeration process, and would include aeration, clarification, and sludge storage. The air will be supplied via distribution pipes for the aeration zone, sludge holding zone and clarifier return/waste airlift pump. The advantage of this process is that it is "packaged", meaning sole-source responsibility from the manufacturer for much of the treatment process. The plant structure would consist of outer and interior steel tanks, which would be delivered to the site, erected and painted. Also included in the package plant are the blowers and controls. • RCWSMD Wastewater Utility Plan (Rev.1) May 2007 5-3 1SC Project No.690-01 • The major disadvantage of the packaged plant is that it is not easily expanded to account for additional capacities. The tanks are round in shape, and therefore no shared walls could he utilized. The amount of land needed to expand the plant would be significantly more then several of the other alternatives. Because the development plan includes increasing the WWTF capacity to 3.6 MGD, expansion of this type of plant would be very difficult. Another disadvantage of the packaged plant is that the tanks are constructed out of steel. These tanks would require routine maintenance and periodic painting to prevent corrosion and maintain the structural integrity of the tankage. Appendix C of this WWUP contains the Opinion of Probable Construction Costs (OPCC) for the conceptual design of a 0.3 MOD extended aeration package plant. The OPCC for the package plant is estimated to be$6,626,000. Appendix C also contains the estimated Operation and Maintenance costs for this alternative. 5.1.5 Sequencing Batch Reactor The SBR treatment process is an activated sludge process that is similar to conventional activated sludge treatment. In a conventional WWTF, aeration and sedimentation/clarification are carried out in separate basins. In an SBR process however, the processes are carried out sequentially in the same basin, known as the reactor. All SBR systems have five steps in common; fill, react, settle, draw and idle. With an SBR, the sedimentation begins when the aeration is turned off in the basin, and the decanter is used to draw off clarified effluent. Operation and/or configuration of an SBR can be modified to allow for nitrification/denitrification. A minimum of two SBR basins are required at a WWTF, as one basin would need to always be in the fill mode to collect incoming wastewater. Solids handling for an SBR would be similar to that of a conventional activated sludge process. Waste activated sludge (WAS) would be pumped from the SBR basins to an aerobic digester during the decant step in the process. The sludge from the digester would be wet-hauled and beneficially reused. Some of the advantages of the SBR process are the footprint and ease of expansion. Because aeration and clarification take place in the same basin, the treatment footprint is RCWSMD Wastewater Utility Plan (Rev.1) May 2007 5-4 JSC Project No.690-01 minimized. Common wall construction could be used for the WWTF construction as • well as future expansions, which would reduce construction costs. The major disadvantage of the SBR process is the rate at which the wastewater effluent is removed from the reactor basin. The decant flow rate could he three to five times the influent peak hour flow. Therefore, all conveyance structures and equipment (i.e. effluent piping and UV disinfection equipment) downstream of the SBR would require an oversized hydraulic capacity. SBR plants can also be operator intensive, as there are several operating cycles within each basin which may occur several times per day. Appendix C of this WWUP contains the Opinion of Probable Construction Costs (OPCC) for the conceptual design of a 0.3 MGD SBR plant. The OPCC for the SBR plant is estimated to be $6,431,000. Appendix C also contains the estimated Operation and Maintenance costs for this alternative. 5.1.6 Membrane Bioreactors • The MBR treatment process is an activated sludge process that utilizes an immersed membrane to combine a bioreactor and microfiltration into one unit process. The membranes are placed directly in the mixed liquor in the aeration basins, and are used in place of secondary clarification for solids separation. Similar to conventional treatment, blowers provide oxygen to the aerobic zone of the basin for BOO reduction and nitrification. Denitrification occurs as mixed liquor is recycled to the anoxic zone of the basins. Permeate pumps pull clarified water through the membranes, leaving the activated sludge in the basins. The remaining sludge would he pumped to the aerobic digester to provide for volatile solids reduction and stabilization. After appropriate aging within the digester, a contract hauler would be responsible for wet hauling the sludge from the digester. The advantages of MBRs include high quality effluent, reduced solids handling, and expansion possibilities. Because the membranes provide a physical barrier to suspended solids and microorganisms, MBR effluent quality is typically much better then conventional treatment. MBR processes do not require stringent MISS concentration 0 RCWSMD Wastewater Utility Plan (Rev.1) May 2007 5-5 JSC Project No.690-01 management, and therefore they can operate at concentrations up to 10,000 mg/L. At • higher MLSS concentrations, the volumetric loading rate and solids retention time is increased, which means that the solids may he wasted to the digester less frequently. Typically, membranes (and associated piping) can he installed in most treatment basins. Therefore, conventional treatment plants can often be converted to membrane facilities without constructing new basins. In addition. sonic membrane processes come in vertically stacked configurations, which would provide the plant with more capacity without having to build new structures_ The largest disadvantage of MBR treatment is the cost. Typically, MBRs are slightly more expensive then conventional activated sludge plant and SBR plants due to MBRs being a proprietary technology and the higher energy demands. However, with the vastly increasing costs of concrete and steel prices over the last two years,MBRs have become much more cost competitive. Appendix C of this WWUP contains the OPCC for the conceptual design of a 0.3 MGD • MBR plant. The OPCC for the MBR plant is estimated to be $6,674,000. Appendix C also contains the estimated Operation and Maintenance costs for this alternative. 5.1.7 Conventional Activated Sludge with Extended Aeration Conventional activated sludge with extended aeration is a treatment process that makes use of aeration basins for biological treatment and clarifiers for solids separation. Treatment basins maintain aerobic and anoxic zones to provide nitrification and denitrification. In the anoxic basin, biomass will consume BOD, but because there is no oxygen being introduced into the basin, biomass will use nitrate as the oxygen source, releasing nitrogen gas to the atmosphere. In the aeration basin, active biomass will consume BOD and incoming ammonia will be nitrified. After undergoing the various biological reactions within the aeration basin, the wastewater would flow to the final clarifiers. The clarifier would perform two main functions; provide an area for solids to settle to produce high quality effluent, and provide thickening of settled solids in the underflow. A portion of the settled solids would he returned to the aeration basin as return activated sludge (RAS) to maintain the mixed liquor concentration. The remaining RCWSMD Wastewater Utility Plan(Rev.l) May 2007 5-6 JSC Project No.690-01 sludge (WAS) would be sent from the clarifier to the aerobic digester for volatile solids reduction and stabilization. Two equal volume digesters would be constructed; each capable of storing half the volume of WAS for a minimum of 60 days. After appropriate aging within the digester, a contract hauler would be responsible for wet hauling the sludge from the digester. The advantage of a conventional activated sludge process with extended aeration is that it is a widely used, proven technology. Conventional plants are known for their simplicity, reliability of performance, and ability to buffer slug loads. Controls for an activated sludge process could be simple or complex. and would ultimately be defined by the owner and/or operator(s). One disadvantage of conventional activated sludge is the area required for construction. Typical conventional activated sludge plants have separate aeration basins, clarifiers and aerobic digesters. Because typical clarifiers are round in shape, shared wall construction is not possible, thereby making the footprint of the plant larger then SBRs and MBRs. In • addition, conventional activated sludge systems are susceptible to bulking sludge, and the MLSS concentration needs to be carefully monitored. Appendix C of this WWUP contains the OPCC for the conceptual design of a 0.3 MGD conventional activated sludge plant with extended aeration. The OPCC for the conventional plant is estimated to be $7,001,000. Appendix C also contains the estimated Operation and Maintenance costs for this alternative. 5.2 Selection Criteria and Recommended Alternative To provide the maximum level of objectivity in evaluating the mechanical treatment options presented in this Section, a weighted criteria evaluation was performed using several criteria. Eight criteria were listed, and each criteria was assigned a score from one to four(one being first or"best", four being last or"worst"). The selection criteria that were evaluated are as follows: • Capital Cost—What is the capital cost of the technology and its required appurtenances? • RCWSMD Wastewater Utility Plan(Rev.1) May 2007 5-7 JSC Project No.690-01 • Operation and Maintenance Cost —Does the technology lend itself to easy operation • and limited maintenance? How much energy does the facility use during normal operation? • Ease of Operation—Will the operator feel comfortable operating the WWTF? • Ease of Expansion—If future population growth and/or flow increases as projected, is the facility easy to expand? • Reliability—Will the technology perform, as stated. and continuously be able to meet regulatory requirements? • Proven Technology —Does the technology have previous installations that are operating as intended? • Effluent Quality— Will the technology be able to meet current and future requirements? • Footprint—How much property is required for the technology and its required appurtenances? The results of this evaluation are shown in Table 5-1. One of the most important criteria was the effluent quality, and the ability of the technology to meet the standards as set forth in the PELs. The MBR system received the highest rating among the reviewed technologies. Table 5-1: Selection Criteria to Facilitate Treatment Alternatives Selection for Resource Colorado Water and Sanitation Metropolitan District Selection Criteria Package Plant SBR MBR Conventional Capital Cost 2 1 3 4 Annual O&M Cost 4 2 1 3 Ease of Operation 2 4 1 3 Ease of Expansion 4 2 l 3 Reliability 3 4 1 2 Proven 3 2 4 1 Technology Effluent Quality 3 4 1 1 2 Footprint 4 2 1 3 TOTAL 25 21 13 21 • RCWSMI Wastewater Utility Plan(Rev.1) May 2007 5-8 jsc Project No.690-01 In addition to the selection criteria, a thorough cost analysis was performed on the various treatment alternatives. Table 5-2 shows the various capital and operation and maintenance costs. Table 5-2: Cost Analysis for the Various Treatment Alternatives for Resource Colorado Water and Sanitation Metropolitan District Treatment Alternative Capital Cost Annual O&M Cost No Action $0 $0 Consolidation with Facilities Keenesburg 514,600,000 $68,100 Hudson $13,500,000 $65,600 Lochbuie S21,200,000 $83,000 Aerated Lagoons Extended Aeration Package Plant $6,626.000 $399,100 Sequencing Batch Reactors $6.431.000 $356,400 (SBRs) Membrane Bioreactors (MBRs) $6,674,000 $330,200 Activated Sludge with Extended $7,001,000 $368,300 Aeration * No cost estimate was prepared for the aerated lagoon alternative due to the fact that an aerated lagoon plant would • very likely not be able to meet the ammonia and nitrate/nitrite standards during the colder winter months. These tables demonstrate that MBRs are the best option to meet the needs of RCWSMD, due, in part, to the ease of expansion, effluent quality, and process reliability. Although MBR is not the least expensive alternative, it was comparable in cost to the other biological treatment alternatives. Given these facts, and the desire of RCWSMD to reuse their wastewater effluent, MBR technology is the selected alternative. However, Resource Colorado does not wish to completely exclude the other mechanical treatment processes from consideration. As RCWSMD plans to implement the new W WTP using a Design/Build approach, the actual treatment facility constructed may include certain processes from other mechanical treatment trains. If the planned design varies significantly from the Recommended Alternative, RCWSMD will amend the Site Application and Utility Plan as necessary. 5.3 Level of Treatment The PELs (as shown in Table 4-2) were developed in accordance with the CDPHE's Regulations for Effluent Limitations, as well as water quality based effluent limits necessary for the protection of the receiving stream (Box Elder Creek). The three treatment alternatives discussed RCWSMD Wastewater Utility Plan(Rev.1) May 2007 5-9 JSC Project No.690-01 above would all have the ability to meet or exceed the effluent limits set forth by the CDPHE. It • should be noted that while SBRs and conventional plants produce high quality effluent, MBRs provide a physical barrier to suspended solids and microorganisms, and therefore produce a much higher quality effluent. which could be re-used for a variety of purposes such as park and green space irrigation to crop usage. 5.4 Public Participation in Selection The Resource Colorado Water and Sanitation Metropolitan District was formed in 2004 and designated as a Wastewater Management/Operating Agency in 2005. However, since development in the service area will not occur for some time, because the property must he entitled, there has been no public participation in the selection of the wastewater treatment technology. The project has been presented however, to representatives of Weld County, the NFRWQPA, and the Towns of Lochbuie, Hudson and Keenesburg. • . RCWSMD Wastewater Utility Plan (Rev.1) May 2007 5-10 JSC Project No.690-01 SECTION 6.0 • MANAGEMENT AND FINANCIAL PLANS 6.1 Establishment of RCWSMD RCWSMD was created for the purpose of acquiring, constructing, financing and maintaining public water, sanitation, storm drainage, street, and mosquito control improvements for the use and benefit of service users within the Pioneer Communities development. RCWSMD has the powers of a metropolitan district and the powers of water and sanitation districts as set forth in Sections 32-1-103, 32-1-1001, 32-1-1004 and 32-1-1006 of the Revised Colorado Statutes, except as limited in the approved Service Plan which was approved by the Weld County Board of Commissioners by resolution on August 30, 2004. The District was officially organized in Weld County District Court on September 29. 2004. On June 30i', 2006, Pioneer Communities Inc.'s comprehensive plan was incorporated into the Weld County Chapter 22 Comprehensive Plan and Chapter 26 Mixed Use Development. The incorporation of the comprehensive plan and the submission of this utility plan satisfies the September 22, 2005 conditional requirements set forth by NFRWQPA to designate RCWSMD • as a Management/Operating Agency and approve the service area. (See Appendix B, Tab 8 for Weld County Ordinance 2006-4 and the letter from NFRWQPA dated September 30, 2005.) 6.1.1 Zoning of Pioneer Communities As stated above, Pioneer Communities received approval for its Comprehensive Plan Amendment in 2006. Pioneer Communities has submitted its Sketch Plan and received instructions from Weld County staff to submit a Change of Zone Application. The Change of Zone Application will be filed during the 2°d or early in the 3'a quarter of 2007, at which point the County has 120 days to review the application. The anticipated hearing in front of the Weld County Board of Commissioners for Change of Zone is expected some time during the 4th quarter of 2007. • RCWSMD Wastewater Utility Plan(Rev.]) May 2007 6-1 JSC Project No.690-01 6.2 Management Structure and Agreements • 6.2.1 The District Board The District is managed by a five-member Board of Directors that meets monthly to approve expenditures, contracts, and District policies. The members must be eligible electors of the Resource District as defined by State law and are elected to alternating four year terms of office at successive biennial elections. Vacancies on the Board are filled by appointment of the remaining directors. The appointee shall serve until the next regular election, at which time the vacancy is filled by election for any remaining unexpired portion of the term. The directors hold regular meetings and special meetings as needed. Each director is entitled to one vote on all questions before the Board when a quorum is present. The Resource District has obtained voter approval to eliminate term limitations applicable to elected governmental officials under State law. The present directors, their positions on the Board, and terms are as follows. Table 6-1: Board of Directors for RCWSMD • Term Expires Name Office (May) Christopher R. Paulson President May 2008 Joel H. Farkas Treasurer May 2010 Jack E. Reutzel Assistant May 2008 Secretary Toni L. Serra Assistant May 2010 Secretary Jean M. Gold Secretary May 2008 The Board is responsible for the overall management and administration of the affairs of the District. The District has no employees, and day-to-day management functions of the District are provided by independent contractors. The District retains Special District Management Services, Inc., Lakewood, Colorado, to perform general management services; McGeady Sisneros, P.C., Denver, Colorado, as its general counsel; Clifton Gunderson LLP, Certified Public Accountants, Greenwood Village, Colorado, as its accountant. In connection with the transactions relating to the provision of water and wastewater services to municipal service providers pursuant to the Resource District • RCWSMD Wastewater Utility Plan(Rev.1) May 2007 6-2 JSC Project No.690-01 Service Plan, the District has engaged Timothy R. Buchanan, P.C. of Arvada, Colorado • as its water counsel; Gateway American Resources LLC of Denver, Colorado for certain consulting services; and Jacobson Satchell Consulting, Inc. of Lakewood, Colorado for engineering services. Prior to completion of construction of Phase I, the Board and Manager will select a contract operator to operate and maintain the new plant. 6.2.2 Service Agreements between Districts RCWSMD provides wholesale wastewater treatment service to Pioneer Regional Metropolitan District (Pioneer Regional) who in turn collects waste from the six Pioneer Metropolitan Districts No. I through 6. The March 5, 2007, service agreement as seen in Appendix D - Tab 20, delineates the responsibilities of each district. Specifically RCWSMD, as stated earlier, will provide wholesale wastewater services to Pioneer Regional. RCWSMD will finance, construct, operate, and maintain the wastewater plant. RCWSMD will also own all interceptors 24 inches or larger in diameter but will contract with Pioneer Regional for maintenance of the large interceptors. Pioneer Regional will finance, construct, operate and maintain all Pioneer Communities lift • stations and regional interceptors under 24 inches in diameter as well as own, operate and maintain the residential collection systems (including lift stations) within each of the six smaller metro districts. The six smaller metro districts will only function in a financing capacity for the construction of the residential collection lines and as a funding source for the rates and charges of Pioneer Regional and RCWSMD. RCWSMD and Pioneer Regional will develop emergency response protocol for their respective responsibilities, however an intergovernmental agreement will be drafted to enlist the aid of the other party if necessary. 6.3 Rules and Regulations of the District The District Rules and Regulations, adopted on May 16, 2005 by the District Board, as seen in Appendix B - Tab 2, provides standards and requirements for construction, ownership and maintenance of District facilities, acquiring water or wastewater service from the District, supply water to other service providers, protecting District water supplies, conserving water, maintaining water quality, discharge of wastes, cross-connection control, and other matters of the District. RCWSMD Wastewater Utility Plan(Rev.1) May 2007 6-3 JSC Project No.690-01 • 6.4 Wastewater Construction Management Plan RCWSMD will obtain site location and design approval for the proposed wastewater treatment facilities from the Colorado Department of Public Health and Environment's Water Quality Control Division (WQCD) prior to construction of any phases of the proposed facilities. RCWSMD will also obtain a discharge permit from the WQCD prior to operating the proposed facilities. RCWSMD will initiate engineering for necessary expansions of the wastewater treatment facility whenever loads reach 80 percent of design capacity. and commence construction of necessary expansions when or before loads reach 95 percent of design capacity. Furthermore, RCWSMD will employ an operations staff meeting the requirements of the Colorado Department of Public Health and Environment's Regulation No. 100 (5 CCR 1003-2), Water and Wastewater Facility Operator Certification Keyni anen s. The above-referenced Rules and Regulations address operations of the wastewater facilities,including pretreatment requirements. For the initial 0.30 MGD facility, RCWSMD anticipates the need for 2.5 full time equivalent employees at the wastewater plant with the operator in responsible charge carrying a minimum of a "B" license (CDPHE, Regulation No. 100). RCWSMD will employ the services • of a qualified contract operator until the initiation of the first expansion or until it is necessary to retain a full time operator. 6.5 Financial Management Plan RCWSMD is authorized to incur debt not greater than $324,000,000 for sanitation improvements including wastewater treatment facilities, lift stations and collection system. Bond payments for the design and construction of the wastewater treatment facility will come initially from private reserves (through developer advances)but will evolve to funding via sewer tap and reuse tap fee payments received from Pioneer Regional. All future design and construction phases will utilize sewer tap and reuse tap fees. Collection of these fees from the individual sewer users will be the responsibility of the regional metropolitan district, which will in turn pay RCWSMD the appropriate fees and charges prior to and during the customer's connection to the collection system. The tap fees are currently estimated as shown in Table 6-2. • RCWSMD Wastewater Utility Plan (Rev.1) May 2007 6-4 JSC Project No.690-01 Table 6-2: Proposed Tap Fees for Phase I of RCSWMD's • Wastewater and Reuse Utility Wastewater Reuse Growth-Related Capital $19,575,920 $4,893,980 Improvements Total New ERUs 2.500 2,500 Ta Fee er ERU $7,830 $1,958 As seen above, the overall costs for the capital improvements for the 0.30 MGD wastewater/reuse treatment plant (including trunk line sewers 24" or larger) is approximately $19,600,000. This amount includes approximately $9,900,000 for engineering and construction and approximately $9,700,000 for financing of the revenue bonds (including two percent issuance cost while excluding the 10 percent reserve requirement) over a 30-year term at a 7.0 percent interest rate. This cost spread over 2.500 users is approximately $7,800 per tap. A financial planning spreadsheet detailing the ten year capital costs for RCWSMD is presented in Appendix B -Tab 10, under the User Charge Study Analysis (UCSA). In addition to these "tap fees", RCWSMD will charge a wholesale wastewater rate (per 1,000 • gallons) to their customers, initially Pioneer Regional. These fees are calculated using the costs for administration, energy usage, plant operation and maintenance (see Tables 3 and 5 of the UCSA for the estimated annual O&M costs). Developer advances of approximately$470,000 will be used to augment volumetric rate revenues and offset operations and maintenance costs for the first three years of service because costs exceed reasonable rate revenues during those years. For example, the calculated O&M cost for FY2009 is $247,976 (see Table 3 of the UCSA), but only $136,113 in revenue (based on the volumetric rates below) is projected, thus the developer advances will have to cover the difference of$132.092 (defined as "Other Revenue"in Table 18 of the UCSA.) Without the developer advances the initial volumetric rates would be cost prohibitive for most homeowners and uncompetitive with surrounding utilities, discouraging the establishment of a customer base. The projected volumetric rates are shown in Table 6-3: Table 6-3: Preliminary Wholesale Wastewater Rates and Reuse Rates er Thousand Gallons 2008 2009 2010 2011 2012 Wholesale $5.90 $5.90 $5.90 $5.00 $4.50 Wastewater Reuse Water $245 $2.45 $2.45 $2.75 $2.75 • RCWSMD Wastewater Utility Plan(Rev.1) May 2007 6-5 JSC Project No.690-01 Ultimately, the capital and operations costs are born by the individual sewer users when they pay • the above tap fees and rates in a manner directed by the regional metropolitan district. The individual sewer users will also be responsible for any additional fees necessary to support the capital expenditures and operation of the regional metropolitan district and individual metropolitan (financing) districts Nos. I through 6. Specifics regarding the RCWSMD rate study which developed the above tap fees and rates can be found in Appendix B - Tab 10. At the present time, no institutional arrangements are in place from any large or governmental connectors, however, the nearby communities of Hudson and Keeneshurg are aware of the proposed facility and may desire wastewater service in the future. No industrial users requiring pretreatment permits are anticipated during the initial (0.30 MGD) phase and, as such, there is no potential to overload the proposed WWTF by industrial or commercial users. 6.6 Revolving Loan Interest The District will not be applying for State Revolving Loan funds. • 6.7 Implementation Schedule To give an indication of when the new wastewater facility may come on-line, a preliminary schedule is presented in Table 6-4. • RCWSMD Wastewater Utility Plan (Rev.!) May 2007 6-6 JSC Project No.690-01 Table 6-4: Preliminary Schedule for Preliminary Engineering, Design, and Construction of the • New 0.30 MGD Wastewater Treatment Facility for Resource Colorado Water and Sanitation Metropolitan District Item Date • Submit Preliminary Effluent Limit Request July 27, 2006 • Submission of Site Application to Weld Co. Public November 16, 2006 Health; Weld Co. Planning; and NFRWQPA • Anticipated Approval of Wastewater Utility Plan by April 26, 2007 NFRWQPA • Submission of Site Application to CDPHE April 27, 2007 • Anticipated Site Approval May 26, 2007 • Design/Build Team Project Commencement August 17, 2007 • Submission of Process Design Report to CDPHE September 14, 2007 • Anticipated PDR Approval October 19, 2007 • Wastewater Treatment Plant Groundbreaking October 26 2007 • • Substantial Completion September 26, 2008 • Start-up, Demonstration and Commissioning October 24, 2008 • First Anticipated Domestic Wastewater Flows November 1, 2008 • RCWSMD _ Wastewater Utility Plan(Rev.1) May 2007 6-7 JSC Project No.690-01 • APPENDIX A REFERENCES • • REFERENCES • Colorado Department of Public Health and Environment—Water Quality Control Commission. Biosolids Regulation —Regulation No. 64. Effective: June 30, 2003. Colorado Department of Public Health and Environment —Water Quality Control Commission. Policy 96-/: Design Criteria Considered in the Review of Wastewater Treatment Facilities. Great Lakes-Upper Mississippi River Board of State and Provincial Public Health and Environmental Managers. Recommended Standards for Wastewater Facilities. (a.k.a Ten States Standards). Albany. NY: health Education Services, 1997. Joint Task Force of Water Environment Federation and American Society of Civil Engineers. Design U Munimpal Wastewater Treatment Plants, Manual of Practice No. 8, Vol. I, II and III. 4th ed. Water Environment Federation, Alexandria, VA. 1998. Metcalf and Eddy. Inc_ Wastewater Engineering: Treatment, Disposal, and Reuse. 3rd ed.. McGraw- Inc; New York, 1991. North Front Range Water Quality Planning Association Utility Plan Guidance, Approved: June 22, 2000. Qasim, S.R. Wastewater Treatment Plants: Planning, Design, and Operation. 2nd ed. Lancaster, PA: Technomic Publishing Co., 1999. • • • APPENDIX B TECHNICAL SUPPORT INFORMATION Tab#1: Legal Description & Evidence of Site Ownership Tab#2: Rules & Regulations of the Resource Colorado Water and Sanitation Metropolitan District Tab#3: Phase 1 Environmental Site Assessment Tab#4: Harkins Property Ecological Assessment Tab#5: Class I Archeological Literature Review for the Harkins Property, Weld County, Colorado Tab#6: Geotechnical Due Diligence Study for Harkins Farms Property, Weld County, Colorado Tab#7: Preliminary Effluent Limits • Tab#8: Planning & Zoning Information Tab#9: Consolidation Information Tab#10: User Charge Study Analysis Tab#11: CDPS General Permit: Stormwater Discharges Associated with Construction Activity (Sample) Tab#12: Construction Stormwater Management Plan (Sample) Tab#13: CDPS General Permit: Stormwater Discharges Associated with Light Industrial Activity (Sample) Tab#14: Site Stormwater Management Plan (Sample) Tab#15: Conceptual Interceptor Sizing Tab#16: Opinions of Probable Construction Costs Tab#17: Operation and Maintenance Costs Tab#18: Calculations Tab#19: Preliminary Geotechnical Study for Site Development, Wastewater Treatment Plant, Pioneer Development Tab#20: Wastewater Service Agreements Proposed Term Sheet Tab#21: District Phasing Map Tab#22: Consolidation Cost Estimate Tab#23: Future Weld County Zoning Information • WASTEWATER UTILITY PLAN for RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT r `r Li ti l LOCATED IN WELD COUNTY,COLORADO May 2007 Revision No.I I Jacobson Satchell CONSULTANTS • APPENDIX B TECHNICAL SUPPORT INFORMATION Tab#1: Legal Description&Evidence of Site Ownership Tab#2: Rules &Regulations of the Resource Colorado Water and Sanitation Metropolitan District Tab#3: Phase I Environmental Site Assessment Tab#4: Harkins Property Ecological Assessment Tab#5: Class I Archeological Literature Review for the Harkins Property,Weld County, Colorado Tab#6: Geotechnical Due Diligence Study for Harkins Farms Property,Weld County, Colorado Tab#7: Preliminary Effluent Limits Tab#8: Planning&Zoning Information • Tab#9: Consolidation Information Tab#10: User Charge Study Analysis Tab#11: CDPS General Permit: Stormwater Discharges Associated with Construction Activity(Sample) Tab#12: Construction Stormwater Management Plan(Sample) Tab#13: CDPS General Permit: Stormwater Discharges Associated with Light Industrial Activity (Sample) Tab#14: Site Stormwater Management Plan(Sample) Tab#15: Conceptual Interceptor Sizing Tab#16: Opinions of Probable Construction Costs Tab#17: Operation and Maintenance Costs Tab#18: Calculations Tab#19: Preliminary Geotechnical Study for Site Development, Wastewater Treatment Plant, Pioneer Development Tab#20: Wastewater Service Agreements Proposed Term Sheet Tab#21: District Phasing Map Tab#22: Consolidation Cost Estimate Tab#23: Future Weld County Zoning Information • Wednesday, November 15,2008 4:00 PM Joel H. Farkas(949)588-9399 p 0 HP Farms LLC 9145 E. Kenyon Ave., Suite 201 Denver, Colorado 80237 (303) 872-9742 November 14,2006 Via Brand Delivery Christopher R.Paulson,President Resource Colorado Metropolitan District 141 Union Boulevard,Suite 150 Lakewood,Colorado 80228 Re: Resource Colorado Water and Sanitation Metropolitan District Dear Mr.Paulson: This letter shall confirm the understanding of HP Farms and Resource Colorado Water and Sanitation Metropolitan District("Resource Colorado"). It is the intent of HP Farms,as the owner of the attached real property,Exhibit A to either sell or donate the attached property to Resource Colorado. The parties shall agree on a price or donation amount(based upon a current market value appraisal)for the real property on or before February 01,2007. Please . acknowledge your general understanding of our agreement by your signature for the District on this Letter. If I may be of further assistance,please telephone me. Very Truly Yours, HP By: oel Farkas I hereby agree that the above is general understanding of the parties. Resource foredo Sanitation Metropolitan District R.Paulson,President Attest: .Q. I . ✓YL-e-efr Jean Gold, Secretary I ;A pp 6 gill b - b L L �iIER W _ H b � I z Im 1 1 U chili[ H a IS "g i E i a g II mIih ! Ii;tti: I ; ILi ! iib� g t at�p� �oo .s+1.306 `fio.0•0@hetj, i :loi 9441 lg. �bbii b#,. c ' ill RI ! '° �:Gl 6 III Q1 g ' 'b ba glgi.i6� {I6 { . s.....„..,._I iii II!ii!IIIIIIffI! i 1$; �T'^?®I m . �, m , z x W • 71 : ;•14 , I 1 11 • I/ \ \ / , l I I II• ! 'i ♦ / /lll'i s` 1 `/ IIE r.,/ iIi.;;-..-;'-' p /�y", r, .� / /.• ; ,' i S/ ,, ,i, J '— ' - .W9L6 3.bf1A410G `, �/7 ' . Y, iI ' Z O - ere./ I .. If or '.� ,-, , ../ ._I ; ,, /; ', ,/ f -, —, y ,,,,,,,,,.•,,, I , ,iiL. 41 I ;I i , ,, ,/ / , t.._.,._ / / \ 1 / 7. II \I , . U 'i I. , 11 AI , 1I � I I IY ,f;r ,. -' I I. 'A /, ; \\\I1 1, ,71\11 1 1 11 , l / ...♦ I I , i I t \ .,,-..,•1!, ,V'' j, W • 1 1 // _ II 111\ \ Its I , 1/II /7 // ui l 1 .., Illr - Il,1')• l '{\ tl \ r 1 , flr ,/:% /, S rII ://,' 1 / I1 I.- I .'1/4:'.::-.%.•‘:-.:`..‘,.- :' \ ‘ �.'11�iC.Nf '�\ I1 it ,i,/ ilk, Q \�_ i /� , � , 1 / I 1 \ ,\ ` � --,,m-:;--",,-;,-;- 1 V 1 l'�I 1 1 ! I ,1 �I�I 1 \ � f ('f i (-I_ '- 1171 1 1 �`'''-......A..\\ � �l17,47.e.„1", 1,1 ,, � � ,. . - I 1 I 1 \ ''' I,I•I • /ff r R ` ` \\• ♦' ' \I\ i• ('�x�( ,_.__; ••; ft- ,4 \IY{lI ,\ /( I I ' •' ' I 11 , s i I - 0.$ ', i ; ,•, 1 � it I I ,..::;;; ..;:r..1%•: -:; � w y \ „ . / • 1 . ,\ t1 I,I 1 f/ 11 1 • X < ., \ \ f I i i 1•4 '/• /../..://'/::>:;r:; , Ir,. r*I -."-.';;----)1..,‘\: : 1\ 1' 1 1 .- -- �, t I r 1 ....),/.7, ,,,:.:1•04,,i; , .::::-,/,. ,/ _ •••••?...-',-, ..-.).: I, • a , I ,I 1 \ 1 11 / ' , , I, I' i , .-', \ 1. 11 \ \\ , '' , , .,,,,.-„,/... . rr ,r 1 ••• .`\I1,\\ �r', %I.1J / ''^~ —',/1 IpY 1 j I• 1 \`. j ( I O /1-1 �. I `v R I 1 \ :':1.'-•:::.::;.,17:777-7;:z _ / I. \ \I \I`- II \j Ili -_ / i-Ls"- \ % ,......,;•,-, li -` `�S, \' - I. \ i /..��♦ �: . \ _ ../ I 111 1 11 ,i t I• i i f't -,.-- v \ \I 1 I .-\ \ll - 1 1 Y-...-,,..-„2:::.:2 I•1 /it)," 1 * ----7::7:''-':--- %, ¢ / 1 '• \ /. ,III ' , /, , 1 •\ \♦ .S,/,------..:-.7,..- \ ., . • - /', `I I I �1 1., 1 •;I ♦ I I 9 i,, --'44), _ �1 l` \� /11 \ I t \ ♦ I\\`.. r. I t ■ y' '' � t y3 ... • RULES AND REGULATIONS OF THE RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT The Board of Directors of the Resource Colorado Water and Sanitation Metropolitan District hereby declares that the following Rules and Regulations have been prepared and adopted to provide for the construction, administration and operation of the District's public Water and Wastewater Systems. These Rules and Regulations shall be effective on the date of adoption by a majority of the Board at a public meeting. The Board of Directors hereby expressly reserves the right to make any lawful addition and/or revisions in these Rules and Regulations when and as they may become advisable to properly manage the District and to promote the peace, health, safety and welfare of the inhabitants of the Service Providers that will be served by the District. These Rules and Regulations are supplementary to, and are not to be construed as, any abridgement of any lawful rights of the Board as outlined in the Colorado Revised Statutes governing Special Districts, including the right to disconnect or to refuse permission to connect any Service Provider to the District's Water or Wastewater System for violation of these Rules and Regulations or any other • applicable law of the State of Colorado. Adopted the 18'"day of July, 2005 RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT By: Harvey Deutsch, President Attest: By: Its: Secretary EFFECTIVE DATE JULY 18, 2005 • {00047247.DOC v.l TABLE OF CONTENTS • ARTICLE 1. GENERAL PROVISIONS 1 1.1 General 1 1.1.1 Authority 1 1.1.2 Scope 1 1.1.3 Policy 1 1.1.4 Purpose 1 1.1.5 Service Plan Limitations 1 1.1.6 Initial Service Area 1 1.1.7 Enterprises and Authorities 2 1.2 Construction of Rules and Regulations 2 1.2.1 Intent of Construction 2 1.2.2 Incorporation of Decrees and Rules and Regulations by Other Governmental Entities: 2 1.2.3 Amendment 3 1.2.4 Conflict 3 1.2.5 Severability 3 1.2.6 Modification, Waiver and Suspension of Rules 3 1.2.7 Saving Provision 3 1.2.8 Repeal of Conflicting Resolutions 3 1.3 District Facilities 3 1.3.1 Ownership and Maintenance of District Facilities 3 1.3.2 Service Provider System Compliance with Design Standards 4 • 1.3.3 Encroachment of the District's Easements 4 1.3.4 Use of District's Easements 4 1.3.5 Non-District Water Wells Prohibited 4 1.4 Inspections 4 1.4.1 Powers and Authority of District 4 1.4.2 Construction Inspection 5 1.5 Protection of District Facilities. 5 1.5.1 Compliance with Statutes and Regulations 5 1.5.2 Locate Information 5 1.6 Definitions 5 1.6.1 Definitions for Water and Wastewater Systems 5 ARTICLE 2. REQUIREMENTS FOR ACQUIRING WATER OR WASTEWATER SERVICE FROM THE DISTRICT 13 2.1 Water or Wastewater Service 13 2.1.1 Policy 13 2.1.2 No Obligation of Service 13 2.1.3 Revocation of Service 13 2.1.4 Covenants 13 2.1.5 Contracts and Agreements: 13 2.1.6 Denial of Service 14 2.1.7 Application for System Review 14 2.1.8 Other Conditions for Service 15 • (00047247.DOC v:11 i 2.1.9 Responsibility for Costs of Providing Service within Service Provider's • System 16 2.1.10 Procedural Requirements for Acquiring Water or Wastewater Service: 17 2.2 Fees, Rates and Service Charges 17 2.2.1 Policy 17 2.2.2 Payment of Fees 17 2.2.3 Schedule and Types of Fees, Rates and Service Charges 17 2.2.4 Billing Procedures for Service Charges 18 ARTICLE 3.WATER SERVICE 19 3.1 Principles for Supplying Water Resources to Public Water Service Providers. 19 3.1.1 Policy Regarding Use of District Water System 19 3.1.2 Water Policy 19 3.1.3 Scope of District Water Supply 19 3.1.4 Ownership of Water and Return Flows 19 3.1.5 Consent to Groundwater Appropriation 19 3.2 District Water System and Service Provider Systems. 20 3.2.1 Ownership and Maintenance of Service Provider Water Service Facilities and Lines 20 3.2.2 Ownership and Maintenance of Master Water Meters and Related District Facilities. 20 3.2.3 Non-Potable Irrigation System 20 3.3 Protection of District Water Supply 20 3.3.1 Limitations to Protect District Water Supply 20 • 3.3.2 Additional Provisions 21 3.3.3 Enforcement 21 3.3.4 Prohibitions 21 3.3.5 Violations 21 ARTICLE 4. WATER CONSERVATION 21 4.1 Compliance with State Laws 21 4.2 Development and Implementation of Water Conservation Programs. 21 4.2.1 Leak Detection 21 ARTICLE 5. WATER QUALITY 22 5.1 Monitoring Water Quality 22 5.2 Commingling of Water Supplies 22 5.2.1 Standards 22 ARTICLE 6. PROVISIONS FOR WASTEWATER SERVICE 22 6.1 General 22 6.1.1 Policy 22 6.1.2 Service Area 22 6.1.3 Request for Approval from an Existing Service Provider 22 6.1.4 Request for Approval from a New Service Provider 23 6.1.5 Service Area Information 24 6.1.6 Approval Procedures 24 • [00047247.Doc vat 11 6.1.7 Post-treatment Waters 24 • 6.1.8 Prohibited Wastes 24 6.1.9 General Prohibition 24 6.1.10 Construction Modifications to Limit Harmful Waste 25 6.1.11 Lateral Size 25 6.1.12 Maintenance of Laterals 25 ARTICLE 7. LIMITATIONS ON DISCHARGE 25 7.1 Limitations On Discharged Wastes/Prohibited Wastes. 25 7.1.1 Standards for Water or Wastewater Discharge into the District's Wastewater System 25 7.1.2 Construction Modifications to Limit the Discharge of Harmful Wastes into the District Facilities, Grease Interceptors/Traps and Sand/Oil Interceptors/Traps 26 7.1.3 Review of Plans for the Construction and Installation of Pretreatment Facilities- 26 7.1.4 Sampling Manholes 26 7.1.5 Interceptor/Trap Maintenance- 26 7.1.6 Interceptor/Trap Requirements for Existing Property/District Facilities 26 7.1.7 Construction Modifications to Limit Harmful Wastes, Wash Racks/Floor Slabs 27 ARTICLE 8. PRETREATMENT/INDUSTRIAL WASTE CONTROL 27 8.1 General 27 • 8.1.1 Authority 27 8.1.2 Compliance 27 8.2 Applicability 27 8.3 Compliance With Requirements. 28 8.3.1 Penalties 28 8.4 Legal Authority Requirements 28 8.4.1 Ordinance/Resolution 28 8.4.2 Attorney's Statement 28 8.4.3 Legal Authority Exemption 28 8.5 Program Procedure Requirements. 28 8.5.1 General 28 8.5.2 Procedures Manual 28 8.5.3 Industrial Waste Survey 28 8.5.4 Notification to Industrial Users 28 8.5.5 Permitting of Significant Industrial Users 28 8.5.6 Monitoring of Industrial Users 28 8.5.7 Slug Discharge Determinations 28 8.5.8 Compliance Activities 28 8.5.9 Industrial User Reporting/Confidentiality 28 8.5.10 Public Participation- 28 8.5.11 Information Transmittal 28 8.5.12 Staffing, Costs, and Funding 28 8.6 Extra-Jurisdictional Industrial Users 28 • [00047247.DOC v:1) iii 8.7 Exemptions 28 • 8.8 Program Review 28 8.9 Remedies 28 8.9.1 Emergency Remedies 28 8.9.2 Routine Remedies 29 8.10 Program Preemption. 29 8.11 Program Delegation. 29 8.12 District Monitoring. 29 8.13 General Requirements Regarding Deleterious Wastes. 29 8.14 Prohibited Discharges. 31 8.15 Specific Discharge Limitations—Service Providers 33 8.16 Applicability 33 8.17 General Discharge Prohibitions. 33 8.18 Specific Discharge Limitations—Users 33 8.18.1 District Limitations 33 8.18.2 National Categorical Pretreatment Standards 34 8.18.3 State Requirements 34 8.18.4 Dilution Prohibited 34 8.19 Insignificant Discharges 34 8.20 Accidental Or Unusual Discharges 35 8.20.1 Accidental Discharge Protection 35 8.20.2 Notification Requirements. 35 8.20.3 Slug Discharge Plan Requirements 35 • 8.21 Hazardous Waste Discharge Notification 35 8.22 Wastewater Contribution Permits 35 8.22.1 Applicability 36 8.22.2 Permit Application 36 8.22.3 Permit Issuance 36 8.22.4 Permit Denial; Appeal and Hearing 36 8.22.5 Permit Conditions 36 8.22.6 Permit Modifications: 36 8.22.7 Permit Duration; Reapplication 36 8.23 Reporting Requirements For Significant Industrial Users 36 8.23.1 Initial Compliance Report For Users Subject To National Categorical Pretreatment Standards 36 8.23.2 Periodic Compliance Reports: 36 8.24 Monitoring District Facilities 36 8.25 Information Submittal, Inspection and Sampling. 36 8.26 Wastewater Treatment. 36 8.27 Confidential Information 37 8.28 Remedies For Noncompliance; Enforcement. 37 8.28.1 Notice Of Violation 37 8.28.2 Administrative Orders 37 8.28.3 Compliance Orders; Compliance Schedules 38 8.28.4 Suspension Of Service 38 8.28.5 Permit Revocation 39 • 100047247.DOC v:1) iv 8.28.6 Penalties 39 • 8.28.7 Legal Action 39 8.28.8 Appeal and Hearing Procedure 39 8.29 Charges and Fees. 39 ARTICLE 9. CROSS-CONNECTION CONTROL AND BACKFLOW CONTROL POLICY AND REGULATIONS 40 9.1 General 40 9.1.1 Policy 40 9.1.2 Responsibility: 40 9.1.3 Service Provider Requirements 40 ARTICLE 10. MISCELLANEOUS 41 10.1 Liability 41 10.1.1 District Not Liable 41 10.1.2 District Not Responsible for Damages 41 10.1.3 Officials Not Liable 41 10.1.4 Non-Liability for Work of Others 41 10.1.5 Indemnity 42 10.1.6 Non-Waiver 42 10.1.7 Notices and Written Submissions 42 ARTICLE 11. PROVISIONS REGARDING MOSQUITO CONTROL SERVICES 43 ARTICLE 12. PROVISIONS REGARDING STREET IMPROVEMENTS 43 • ARTICLE 13. PROVISIONS REGARDING EMPLOYEE AND PERSONNEL MATTERS...43 • {00047247.DOC va) v ARTICLE 1. • GENERAL PROVISIONS 1.1 General. 1.1.1 Authority: These Rules and Regulations are adopted in accordance with the authority conferred in Title 32, Article 1, and other provisions of the Colorado Revised Statutes,by the Resource Colorado Water and Sanitation Metropolitan District Board of Directors. The District is a political subdivision of the State of Colorado and a quasi-municipal corporation with all the powers thereof which are specifically granted to the District, or are necessary or incidental to or implied from powers specifically granted by statute,constitution or other law, for carrying out the objectives and purposes of the District. 1.1.2 Scope: These Rules and Regulations have been adopted and promulgated pursuant to C.R.S. §32-1-1001(1)(m) and shall be considered a comprehensive set of Rules and Regulations governing the operations and functions of the District as of the effective date stated herein. The District has the authority to implement the Rules and Regulations provided herein by policies and resolutions. The Board reserves the right to make rulings and adopt resolutions concerning matters not covered herein as and when appropriate in the opinion of the Board. 1.1.3 Policy: It is hereby declared that the Rules and Regulations hereinafter set forth will serve a public use and are necessary to insure and protect the health, safety,prosperity, security, and general welfare of the service users of the District. • 1.1.4 Purpose: The purpose of these Rules and Regulations is to provide for the orderly financing, control, management and operation of the Water and Wastewater Systems of the District, including additions, extensions and connections thereto, and to provide for the administration and enforcement of standards to promote the health, safety and general welfare of Customers of Service Providers or other service users of the District. Provision of water and sanitation services by the District will be available only in accordance with these Rules and Regulations. 1.1.5 Service Plan Limitations: The District's Service Plan prohibits the District from providing water or wastewater service directly to individual customers without amending the District's Service Plan. The District is empowered by C.R.S. §32-1-1001(1)(d)(I)and by Colorado law to enter into contracts and agreements affecting the affairs of the District. The District intends to enter into Agreements with water and wastewater Service Providers for the provision of water or wastewater services as set forth in these Rules and Regulations. Such Agreements may require Service Providers to satisfy certain other conditions prior to obtaining service from the District. The District's provision of water and/or wastewater services to Service Providers is contingent upon the District having an adequate Water Supply and that the District Facilities are adequate. Because of these limitations, the District cannot guarantee that it will be able to provide water and sanitation service to Service Providers or properties even if they are within the District's Service Area. 1.1.6 Initial Service Area: The initial Service Area consists of underserved areas within Adams and Weld County including the Cities of Brighton or Commerce City or • f00047247.DOC v:1 other Service Providers. The District,through Agreements, will supply water or provide • wastewater services to Service Providers for service to their Customers through their systems. The Service Area may be expanded to serve other properties, through Agreements with Service Providers, as demand for service and resources to provide such services are available. 1.1.7 Enterprises and Authorities: The provision of water, sanitation and storm drainage services for the use and benefit of Service Providers shall be through the creation of enterprises and/or authorities which will be authorized to collect rates,fees, tolls and charges for connection to and use of the District Facilities and the provision of service. Such service shall be subject to any capacity limitations and provisions for the operation, maintenance, repair and replacement of all District Facilities owned by the District, in accordance with these Rules and Regulations. 1.2 Construction of Rules and Regulations. 1.2.1 Intent of Construction: It is intended that these Rules and Regulations shall be liberally construed to effect the general purposes set forth herein, and that each and every part thereof is separate and distinct from all other parts. No omission or additional material set forth in these Rules and Regulations shall be construed as an alteration, waiver, or deviation from any grant of power, duty or responsibility, limitation or restriction, imposed or conferred upon the Board by virtue of statutes now existing or subsequently amended or adopted, or under any Agreement existing between the District and any other private or governmental entity or Service Provider. Nothing contained herein shall be so construed as to prejudice or affect the right of the District to secure the full benefit and protection of any law which is now • enacted or may subsequently be enacted by the Colorado General Assembly pertaining to the governmental or proprietary affairs of the District. 1.2.2 Incorporation of Decrees and Rules and Regulations by Other Governmental Entities: (a) General: Any limitations, restrictions or prohibitions validly placed upon the District or the water rights comprising the District's Water Supply by any governmental entity or by any Agreement to which the District is a party, are hereby incorporated into these Rules and Regulations by this reference and shall constitute a limitation, restriction and/or prohibition on the District's ability to provide service to Service Providers and on each Service Provider that shall contract with the District for the supply of water or wastewater service. (b) Water: The provision of water service by the District may be governed by and subject to court decrees, stipulations, or other court orders or decrees, including any subsequent court orders concerning the water to be supplied through service or delivery agreements by the District to Service Providers. The District acknowledges that water sources also may be limited by all applicable laws,rules and regulations governing the withdrawal of groundwater, including but not limited to, the Ground Water Management Act, §37-90-101 et seq. the Rules and Regulations for the Management and Control of Designated Ground Water, 2 C.C.R.410-1, and the Regulations for the Use, Control and Conservation of Ground Water S (00047247.DOC v:1) 2 • Within the Lost Creek Ground Water Management District, laws and regulations governing water quality, and all other applicable laws and regulations, as now or hereafter constituted. 1.2.3 Amendment: It is specifically acknowledged that the District shall retain the power to amend these Rules and Regulations as it deems appropriate and such amendments shall be entered in the Minutes of the District and periodically incorporated in printed copies of these Rules and Regulations. Prior notice of these amendments shall not be required to be provided by the District exercising its amendment powers pursuant to this Article. 1.2.4 Conflict: In the event of a conflict between these Rules and Regulations and specific terms or conditions of any Agreement entered into between the District and any party, these Rules and Regulations shall control. 1.2.5 Severability: If any provision of these Rules and Regulations, or its application to any person or circumstances is held invalid, the application of such provision to other persons or circumstances, and the validity, enforceability or legality of the remainder of these Rules and Regulations, shall not be affected thereby. 1.2.6 Modification, Waiver and Suspension of Rules: The Board of Directors or the District Manager, acting on prior written instructions of the Board, shall have the sole authority to waive, suspend or modify the application of these Rules and Regulations, and any such waiver, suspension or modification must be in writing, signed by the Board or the District Manager and shall not be deemed an amendment of the Rules and Regulations. No waiver, suspension or modification on any one occasion shall constitute a waiver, suspension or • modification on any subsequent or other occasion. 1.2.7 Saving Provision: The enactment of these Rules and Regulations, any amendment thereof, or the repeal of any prior existing Rules and Regulations or resolutions shall not deny or limit any right, action, cause of action, penalty charge or fee which arose under such provision. 1.2.8 Repeal of Conflicting Resolutions: All resolutions or parts of resolutions in conflict herewith as of the effective date hereof, are hereby repealed, except as may be expressly provided herein. 1.3 District Facilities. 1.3.1 Ownership and Maintenance of District Facilities: Except as otherwise provided in these Rules and Regulations, it is the policy of the District that all District Facilities forming an integral part of the District's Water and Wastewater Systems are the property of the District upon acceptance by the District regardless of whether such Facilities are constructed, financed, or paid for by the District or by other Persons. The District shall be responsible for maintenance, repair and reconstruction of such Facilities and all appurtenances thereto, at the cost of the District,unless the District Facility is under warranty in which case the warranty provisions shall apply to the fullest extent provided by law. No other Persons, except those authorized by the District, shall have any right to enter upon, inspect, operate, adjust, change, alter, move or relocate any portion of the District Facilities. • {00047247DOC v:1) 3 1.3.2 Service Provider System Compliance with Design Standards: [Reserved]. • 1.3.3 Encroachment of the District's Easements: No Person, including but not limited to, Service Providers with whom the District has a Contract shall construct any temporary or permanent building or other similar structure,place any fill material on, or otherwise encroach upon any of the District's easements. 1.3.4 Use of District's Easements: A Service Provider, property owner, developer or contractor may request permission from the District to share or use the District's easements for the installation of drains, pipelines or other facilities necessary to utilize the District Facilities. The District's determination to allow a Service Provider, property owner, developer or contractor to share or use the District's easements shall be made in the sole discretion of the District. Any such approval shall be in the form of a written agreement, which shall set forth fully the terms of the agreement, specifically including,but not limited to, the terms set forth below: (a) Any such agreement shall be subject to Board approval after a public meeting therefore. (b) The property owner,developer or contractor shall, at all times, have the obligation,enforceable at the demand of the District,to construct, operate, maintain, repair and replace any non-District owned facilities as may be desirable from time-to-time. (c) The Service Provider, developer or contractor shall agree to . indemnify and save the District, its officers, directors, agents and employees harmless from and against every claim, demand, liability,cost,charge, suit,judgment and expense of whatsoever kind or nature, including,but not limited to, interest, court costs and attorneys fees which the District, its officers, directors, agents or employees may pay or incur by reason of or which in any way arise out of the sharing or using of the District's easements by the property owner, developer or contractor. Said indemnification shall extend to claims, demands and liability or injury to persons and property and financial loss which incur off the job site as well as on, and for injury and damage to person and property and financial loss occurring after construction and installation of the non-District owned facilities within the District's easements by the property owner, contractor or developer. 1.3.5 Non-District Water Wells Prohibited: In an effort to coordinate the provision of water services as contemplated in the District's Service Plan, only those wells forming part of the District's Water Supply may connect to the District's Water System. Service Providers that have a Service Agreement with the District shall not act to impair the District's water rights or water quality. The District is not responsible for the augmentation of any wells within the District's Service Area other than those owned by the District, except by separate Agreement. 1.4 Inspections. 1.4.1 Powers and Authority of District: The District Manager or representative or their designee bearing proper credentials and identification shall be permitted to enter all property of the Service Provider necessary for the purposes of reading meters, testing related to • (00047247.DOC v:1) 4 discharge(s)to the Water or Wastewater Systems, inspection, observation, measurement, • sampling, repair, maintenance of any portion of the District Facilities lying within said properties and related matters, upon reasonable notice to the Service Provider, except in the case of an emergency in which case prior notice is not required. 1.4.2 Construction Inspection: The District Manager,representative or their designee shall have the right to inspect any and all work during construction of any Service Provider facilities necessary to receive water or wastewater service from the District, to ensure installation in accordance with District standards. After completion of construction the District Manager and/or his representative shall make a final inspection of construction prior to commencement of service. 1.5 Protection of District Facilities. 1.5.1 Compliance with Statutes and Regulations: For all projects that require digging, boring, directional drilling or excavation in or around District Facilities,the person, contractor or excavator wishing to dig or excavate around said District Facilities shall comply with all applicable statutes and regulations of the State of Colorado. 1.5.2 Locate Information: For projects that require digging,boring, directional drilling or excavation around District Water System facilities, a contractor or excavator must provide location information to the District and must comply with all other District requirements for notification and processing prior to commencing any digging, boring, directional drilling or excavation. • 1.6 Definitions. 1.6.1 Definitions for Water and Wastewater Systems: Unless the context specifically indicates otherwise, the meaning of the terms used herein shall be applicable to these Rules and Regulations. (a) Agreement or Agreements: Any Board approved Water Delivery Agreement,Water Resource Agreement, Connector Agreement and/or any other contract or agreement necessary to the provision of water or wastewater service to Service Providers, together or referred to separately herein. (b) Annual Charges or Annual Charges for Service: The sums paid or becoming payable to the District pursuant to a Connectors Agreement and pursuant to any agreement supplemental thereto. (c) Applicant: The Service Provider entering into a contract with the District for new or additional water or sanitation service. (d) Application Fee: The fee charged by the District that is intended to cover the Costs incurred by the District in evaluating a Water Delivery Agreement or Connector Agreement. • [00047247.DOC v.11 5 (e) Board or Board of Directors: The duly elected Board of Directors • of the District, which acts as the governing body of the District. (f) BOD5 (5-Day Biochemical Oxygen Demand): The quantity of dissolved oxygen, expressed in parts per million by weight,required by aerobic biological action under standard laboratory procedure in five days at 20 C. (g) Capital Improvement Plans: Shall refer to the District's Water or Wastewater Facilities Capital Improvements Plans. (h) Categorical Standards or National Categorical Pretreatment Standards or Pretreatment Standards: Any regulation containing pollutant discharge limits promulgated by the EPA in accordance with Articles 307(b) and (c)of the Clean Water Act(33 U.S.C. §1317 et seq.) which applies to a specific category of Industrial Users. (i) Clean Water Act: The Federal Water Pollution Control Act, as amended, 33 U.S.C. §1251, et seq. (j) Connector Agreement: A contract between the District and a Service Provider for the District to provide wastewater services to a Service Provider in accordance with these Rules and Regulations. (k) Cost(s): All direct costs applicable to the construction, reconstruction,enlargement or dedication of a given District Facility, including but not limited to,costs associated with planning, design, preliminary and design engineering, construction, • inspection, administration, acquisition, or dedication of District Facilities, acquisition of all required rights-of-way, acquisition of water rights, depreciation, attorney fees, regulatory agency fees, plan approval fees, "as built"drawings, and all other fees and/or costs necessary to provide new, different or additional water or wastewater service. (1) Customer: Any person, company, corporation, public entity or authority,developer, property owner, lessee, tenant or occupant of such property owner, or visitor of any of the foregoing, who is supplied with or uses water or sanitation service furnished by any Service Provider. (m) Deleterious Wastes: Any wastes contained in sewage that would be harmful to the District's Sewer System, or which, without pretreatment, would violate federal, state or local pretreatment standards. (n) Design and Construction Standards and Specifications for Water and Wastewater Facilities ("Design Standards"): District document that establishes the minimum standards for the design and construction of all Facilities of the District. (o) District: The Resource Colorado Water and Sanitation Metropolitan District, a quasi-municipal corporation and political subdivision of the State of Colorado. • 100047247.DOC v:l) 6 • (p) District Engineer: The person or firm appointed by the Board and employed by or contracted with to do engineering work for the District. (q) District Facility or Facilities: All components of the District's Water and Wastewater Systems however acquired by the District and constructed. The District Facilities shall also include all land, easements, permits or other interests in real property, and all operational permits and licenses and all roadways or access facilities and all improvements necessary to the operation of the District Facilities and to carry out the purposes of the District. (r) District Manager: The person or firm retained by the Board to administer and supervise the affairs of the District and its employees, including, but not limited to,enforcement of the District's Rules and Regulations, and who may, among other things, operate, inspect and approve all connections, excavations, extensions, installations, District Facilities owned, to be dedicated to, or under the control of the District. (s) District Water Supply: All non-potable water,potable water, first use or reuse water, return flows,banked water credits, banked return flow credits,tributary, not non-tributary, non-tributary and designated basin water rights and groundwater rights owned by or which is made available by dedication, lease, contract or Agreement to the District for provision of service to Service Providers pursuant to the terms of an Agreement. (t) ERU (Equivalent Residential Unit): An approximate measure of the level of service necessary to serve a single-family dwelling, which is used to calculate the cost of connection fees and service charges pursuant to an Agreement. • (u) Extension: A water transmission main or wastewater interceptor sewer required in order for the District to provide service to Service Providers according to the terms and conditions set forth herein. (v) Extension Agreement: An Agreement executed by the District and a Service Provider providing for the installation of an extension by the District pursuant to which the cost of such extension is paid by the Service District to the District. (w) Inspector: The person, persons or firm duly authorized by the Board to inspect, monitor and approve the installation, connection, and operation of the District Facilities and to periodically monitor and inspect the operations of such District Facilities. (x) Industrial User: Any non-domestic source discharging pollutants into the District's Wastewater Facilities. (y) Industrial Wastes: The liquid wastes from industrial processes, trade or business, as distinct from sanitary sewage. (z) Interceptor: Any one of the intercepting sewers, outfalls, or force mains that is part of the Wastewater Collection System. (aa) Interference: A discharge which, alone or in conjunction with a discharge or discharges from other sources,both: . f00047247.DOC v:l E 7 1) Inhibits or disrupts the District's treatment processes or • operations, or its sludge processes, use or disposal; and 2) Therefore is a cause of a violation of any requirement of the District's NPDES Permit(s) (including an increase in the magnitude or duration of a violation)or of the prevention of sewage sludge use or disposal in compliance with the following statutory provisions and regulations or permits issued thereunder(or more stringent state or local regulations): Article 405 of the Clean Water Act, the Solid Waste Disposal Act(SWDA) (including Title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA), and including state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA), the Clean Air Act, the Toxic Substances Control Act, and the Marine Protection, Research, and Sanctuaries Act. (bb) Main Line: Water or sewer pipe used for the purpose of conveying water to a Water Connection Point or conveying Wastewater from a Wastewater Connection Point that is part of the District Facilities. (cc) Master Water Meter: Measuring device used to determine the amount of water supplied to a Service Provider at a Water Connection Point. (dd) MG: Million gallons. (ee) National Pollutant Discharge Elimination System or NPDES Permit: A permit issued pursuant to Article 402 of the Clean Water Act(33 U.S.C. 1342). • (ff) Permit: Written permission of the Board given pursuant to these Rules and Regulations, subject to the specific terms and conditions contained therein. (gg) Person: Any individual, partnership,co-partnership, firm, company, corporation, association, unincorporated association,joint stock company, trust, estate, governmental entity, or any other legal entity, or their legal representatives, agents or assigns, or two or more such persons acting jointly as a firm,partnership, unincorporated association,joint adventurers or otherwise. (hh) pH: The logarithm(base 10)of the reciprocal of the concentration of hydrogen ions expressed in moles per liter of solution. (ii) Pollutant: Any dredged spoil, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discharged equipment, rock, sand, cellar dirt, and industrial, municipal, and agricultural waste discharged into water. (jj) Pollution-Hazard Activity: Means any of the following activities: 1) Drilling operations. 2) Surface and subsurface mining operations. • (00047247.DOC v:11 8 • 3) The storage and application of pesticides/herbicides and/or insecticides in any manner, except for private residential or business use. 4) The storage and application of fertilizers in any manner, except for private residential or business use. 5) Using,handling, storing, dispensing or transporting toxic or hazardous substances, including, but not limited to radioactive materials. 6) Using, handling, storing, dispensing or transporting flammable or explosive materials, including petroleum products, except for storage of not more than 25 gallons of petroleum products in a private home or business and except for fuel in vehicular fuel tanks. 7) Using, handling, storing, dispensing or transporting organic nutrients, including phosphorus and nitrates, or engaging in any activity that creates the same. 8) Any solid or liquid waste disposal. 9) Any activity that is conducted in a manner that creates a foreseeable risk of pollution to the District Water Supply or damage to the District's Facilities. (kk) Pretreatment or Treatment: The reduction of the amount of Pollutants, the elimination of Pollutants, or the alteration of the nature of Pollutant properties in • wastewater to a less harmful state prior to or in lieu of discharging or otherwise introducing such Pollutants into a POTW. The reduction or alteration can be obtained by physical, chemical, or biological processes,or by other means, except as prohibited by 40 CFR §403.6(d). (11) Pretreatment Facilities: Structures, devices, equipment or processes for the purpose of reducing or removing the deleterious wastes from Wastewater or altering the nature of deleterious wastes prior to discharging such sewage into the District's Wastewater Collection System. (mm) Pretreatment Requirement: Any substantive or procedural requirement related to pretreatment, other than a National Pre-treatment Standard imposed on an Industrial User. (nn) Properly Shredded Garbage: Garbage that has been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers with no particle greater than 1/2" in any dimension. (oo) Property Owner or Owner: The person or persons who hold title to a parcel of land as shown on the property tax assessment roll in the office of the applicable County Assessor. (pp) Publicly Owned Treatment Works ("POTW"): A treatment work as defined by Article 212 of the Clean Water Act(33 U.S.C. §1292), which is owned in this instance by the District. This definition includes any devices and systems used in the storage, • �00047247.DOC v ) 9 treatment, recycling and reclamation of Sewage or industrial wastes of a liquid nature. It also • includes sewers,pipes and other conveyances only if they convey wastewater to the POTW treatment plant. "POTW" also refers to the District officials responsible for operations and maintenance of the collection system or treatment plant and the administration of the pretreatment program. (qq) SDWA: The Safe Drinking Water Act of 1974, as amended, 42 U.S.C. §300 j -9(i). (rr) Service Area: A planning term, which refers to all areas currently being served or proposed or planned to be served pursuant to the District's Service Plan approved on August 25, 2004 by the County Commissioners of Weld County, Colorado, as amended from time to time. However, any reference to the District Service Area or proposed Service Area does not mean that the District is capable or that property within the Service Area is entitled to service. (ss) Service Provider(s): Municipalities, counties, authorities, special districts (including Metropolitan Districts and Water and Sanitation Districts), water companies and ditch companies, as well as state and local entities who will contract with the District for water and/or wastewater services and for the provision of wastewater service, and may also include private entities, and who will in turn distribute the water, collect Sewage and otherwise service and bill the individual Customers, including residential, commercial, and/or Industrial Users. (tt) Sewage or Wastewater: A combination of liquid wastes • originating from any residential,commercial, or industrial building or other establishment, which may include household wastes, human excreta, animal or vegetable matter, organic or inorganic material in suspension or solution, and other solids in suspension or solution which enter the POTW. (uu) Sewer or Wastewater Main Line: Any pipe, system of piping and appurtenances used as a conduit for Sewage in the District's Wastewater Collection System and owned by the District. (vv) Sewer or Wastewater Service Line: Any pipe, system of piping, tap, line and appurtenances including lift stations,pumping stations and collection lines, used as a conduit for Sewage from the Wastewater Connection Point to the District's POTW. (ww) Significant Industrial User: 1) Any Industrial User subject to categorical pretreatment standards under 40 CFR §403.6 and 40 CFR Chapter 1, Subchapter N; 2) Any Industrial User designated as such by the District on the basis that the Industrial User has a reasonable potential for adversely affecting District operations or for violating any pretreatment standards or requirement; • [00047247.DOC v:I) 10 3) Any Industrial User discharging an average 25,000 gallons • per day or more of process wastewater to the sanitary sewer system(excluding sanitary, non- contact cooling, and boiler blow down wastewater); and 4) Any Industrial User discharging a process waste stream which makes up five percent(5%) or more of the average dry weather hydraulic or organic capacity of the District's Wastewater Treatment Works. Upon a finding that an Industrial User meeting the criteria in paragraphs (b), (c),or(d) above has no reasonably potential for adversely affecting the District's operation or for violating any Pretreatment Standard or requirement, the District may at any time, on its own initiative or in response to a petition received from a Service Provider or Industrial User, determine that such Industrial User is not a Significant Industrial User. (xx) Slug Discharge: Any discharge of a non-routine, episodic nature, including but not limited to an accidental spill or a non-customary batch discharge. (yy) Suspended Solids: Solids,expressed in parts per million by weight, that either float on the surface of or are in suspension in the water, sewage or other liquids, which are removable by filtration. (zz) Testing: In the context of water or sewage, the analysis of water or • sewage samples for composition, and other characteristics; in the context of construction or connection of Water or Wastewater System facilities, the inspection and trial operation of the construction or connection of Water or Wastewater System facilities. (aaa) Total Kjeldahl Nitrogen(TKN): The sum, expressed in parts per million(ppm) or milligrams per liter (mg/L), of free-ammonia nitrogen and organic nitrogen compounds which are converted to ammonia under digestion conditions specified by the Kjeldahl Nitrogen Test Method. (bbb) Toxic Pollutant: But not limited to, any pollutant or combination of pollutants listed as toxic in regulations promulgated by the administrator of the Environmental Protection Agency under the provisions of Article 307(a)of the Clean Water Act or other acts. (ccc) Upset: An exceptional incident in which there is unintentional and temporary noncompliance with permit effluent limitations because of factors beyond the reasonable control of the District which result in flows or solid materials exiting the District's Wastewater System into state waters and which may cause or threaten pollution of state waters. (ddd) Wastewater Collection System: All structures, facilities, and equipment owned and used by the District for collecting,pumping and transporting Wastewater within the District's Wastewater System from the Wastewater Connection Point to the District's Wastewater Treatment Works, including but not limited to metering facilities, Interceptor sewers, manholes and lift stations. • {00047247.DOC v.1) 11 (eee) Wastewater Connection Point: The point at which the Service • Provider's sewer service lines or system connects to the District's Wastewater System for a permanent or temporary purpose. (fff) Wastewater System: All components of the District's Wastewater Collection System and Wastewater Treatment Works. (ggg) Wastewater Treatment Works: All structures, facilities, and equipment owned and used by the District for treating Wastewater prior to discharge or disposal, including but not limited to the headworks facilities, treatment basins, disinfection processes and effluent outfall, as well as solids handling facilities. (hhh) Water Connection Point: The point at which the Service Provider's water service system connects to the District Water System for a permanent or temporary purpose. (iii) Water Delivery Agreement: A contract for the delivery of all or a portion of the District's Water through the District's Water Distribution System to the Service Provider and may establish other contractual obligations as conditions for the provision of water service to the Service Provider for delivery by the Service Provider to its Customers. (jjj) Water Distribution System: All structures, facilities and equipment owned and used by the District for storing, boosting, transporting to the Water Connection Point, and measuring the District's Water Supply, including but not limited to tanks, • booster pump stations, distribution piping and metering facilities. (kkk) Water Lease: An agreement with a Service Provider to lease District water or water rights subject to limitations for delivery of water so as not to impair existing Water Delivery Agreements and terms sufficient to secure payment for the Costs of delivering such water. (111) Water Resources Agreement: Agreement between an owner of a water right and a Service Provider seeking to acquire water service from the District, which provides the Service Provider with water resources to serve all or a portion of the property within the Service Provider's service area and may establish other contractual obligations as conditions on the provision of water to the Service Provider by the District, including but not limited to, assurances regarding water quality and availability of substitute supplies. (mmm)Water System: All components of the District's Water Treatment System and Water Distribution System. (nnn) Water Treatment System: All structures, facilities, equipment and processes owned and used by the District for diverting, producing, transporting and treating the District's Water Supply including but not limited to wells, gathering, piping and treatment facilities. • (00D47247DOC v:1) 12 • (000) Any Other Term: Any other term not herein defined shall be defined as presented in the"Glossary-Water and Sewage Control Engineering,"A.P.H.A., A.W.W.A.,A.S.C.E., and F.W.S.A., latest editions. ARTICLE 2. REQUIREMENTS FOR ACQUIRING WATER OR WASTEWATER SERVICE FROM THE DISTRICT 2.1 Water or Wastewater Service. 2.1.1 Policy: Provision of water or wastewater service by the District to Service Providers is subject to these Rules and Regulations. Service Providers seeking to acquire water service from the District shall enter into a Water Delivery Agreement with the District whereby the Service Provider's water supply or water resources necessary for meeting the Service Provider's needs shall be made available to the District. For Wastewater Service, Service Providers shall be required to enter into a Connector Agreement. The District may require certain additional conditions prior to granting of service from the District. 2.1.2 No Obligation of Service: Pursuant to C.R.S. §32-1-1001(1)(d)(I),the District may enter into contracts and agreements affecting the District's water or wastewater service and the District's ability to provide such service. The District is not obligated to provide public water or wastewater service other than as required by existing express written Agreements. Subject to the limitations and conditions herein and in any Agreement, it is the • intent of the District to make available water or wastewater service to those Service Providers that contract with the District. The relationship between the District and Service Providers receiving water and wastewater service from the District Facilities shall be contractual. 2.1.3 Revocation of Service: Service shall be revocable by the District upon non-payment of fees or charges owed to the District, upon failure to comply with the District's Rules and Regulations, or when the District Manager or Board determines that an emergency exists and such revocation is necessary to protect the health, safety and welfare of the Service Provider Customers. (a) Notice and Hearing: In all cases except as specifically provided otherwise herein,or except in those circumstances involving an imminent hazard to the health, safety or welfare of Service Providers, their Customers or to the District's Water and Wastewater Systems, the District may make provisions for notice and hearing prior to revocation of service. 2.1.4 Covenants: Some conditions of Agreements between the District and Service Providers or other Users seeking service may require Service Providers to enter into commitments concerning real property. Such commitments shall be recorded and shall constitute covenants that run with the property. 2.1.5 Contracts and Agreements: (a) As provided in Article 2.1.2 of this Article 2, the District shall • provide water or wastewater service to Service Providers only by Agreement. However, the {00047247.DOC v } 13 District may in its discretion determine on a case-by-case basis the appropriate terms of such , Agreement(s), including but not limited to the nature of the water to be delivered, terms that meet special circumstances such as bulk delivery agreements, or provisions accommodating special circumstances for wastewater service. (b) Each Agreement is subject to these operating Rules and Regulations, District engineering standards, and all rules and policies promulgated hereunder and amendments thereto. The operating rules and engineering standards and any amendments shall be incorporated by reference and made a part of any Agreements with Service Providers by reference to these Rules and Regulations. 2.1.6 Denial of Service: The District's Board retains, in its sole discretion and judgment, the right to deny an application for service when granting the application for service would not be in the best interests of the District. The District may deny any application for water or wastewater service to any property within the District's Service Area or wastewater service area as defined in Section 6.1.2, based on the District's determination that the District lacks sufficient water treatment capacity, wastewater treatment capacity, water and/or wastewater Facilities and/or water resources to serve the properties proposed by any Service Provider making application to the District for water or wastewater service. Other factors that the District's Board may consider, not by way of limitation, include each of the following: (a) Whether adequate water resources, water rights, water storage and related water facilities are available and will be available in the future to serve existing or proposed Service Providers and the impact of other factors resulting in the unavailability of • water supply, including restrictions that may be imposed by the State Engineer or other applicable agency. (b) The impact of the requested service on the District's existing water or wastewater service,treatment, transmission and storage facilities and capacity limitations related to water and wastewater treatment. (c) The economic effect that the approval of the application for service would have on the District. (d) Whether granting the application for service would adversely affect the public health, welfare or safety of the residents and property owners served by the District's existing or future Service Provider customers pursuant to Agreements. (e) Any other factors related to the application for service. There may be factors and aspects of an application for service that are unique to that application and are not contained in the above list, and the Board retains the right to consider any and all factors related to an application for service and to make a decision based thereon. 2.1.7 Application for System Review: A Service Provider seeking to acquire water service from the District shall submit an application for system review, which is the District's review process designed to ensure that the District has adequate resources, to assess District Facility needs, and determine whether Service Provider's water or wastewater facilities proposed to be connected to the District's Water or Wastewater Systems comply with the • (00047247.Doc v1) 14 • District's Design Standards. The District's review will determine the scope of additional District water or wastewater Facilities required to serve the Service Provider. 2.1.8 Other Conditions for Service: In addition to the requirements for service set forth in this Article 2, the District may require that a Service Provider seeking to acquire service from the District satisfy certain conditions, as outlined in this section and as set forth more specifically in other sections of these Rules and Regulations. (a) Integrated System: The District may condition service upon the Service Provider being part of a viable integrated system for the installation, operation and maintenance of water delivery and wastewater systems. The District may adopt operating rules and engineering standards establishing the minimum service requirements, but the District and any Service Providers acknowledge that those requirements may be further limited or restricted by individual Service Provider's rules,regulations or standards. (b) The District may require that all property served or to be served by the District be within the Service Provider boundaries or be included within the Service Provider boundaries or meet other service area requirements for wastewater service as set forth in Article 6 herein, , prior to execution of an Agreement to insure the orderly, efficient, and economically feasible delivery of service. (c) Adequate Water Resources: A Service Provider seeking to acquire water or wastewater service from the District may be required to dedicate reuse or return flow water rights to the District. • (d) Adequate Water or Wastewater Systems: The District may require, as a condition of service, advance dedication of fees or capital to build necessary water or wastewater Facilities, and may provide for such fees or capital in an Agreement between the District and the Service Provider, for which the District may,but it is not required to,provide credit to the Service Provider. The District also may require payment of additional fees for the purpose of meeting costs of expanding District Facilities, such fees to be determined by the Board from time to time. (e) Adequate Main Lines and Service Lines: A Service Provider seeking to acquire water or wastewater service from the District shall be required to pay for the District's construction Costs of all Facility extensions necessary to connect the Service Provider's system to the Water and/or Wastewater Systems of the District. (f) Non-Potable Irrigation System: In certain areas of the District a Service Provider seeking to acquire water or wastewater service from the District may be required to pay for the construction of a separate non-potable irrigation system for the Customers of the Service Provider's service area. (g) Well Site Dedication: In order to provide water and/or wastewater service to property within the Service Provider's boundaries or service area, the District may require the dedication of easement(s),easement(s) for well site(s) together with access easement(s), water, sewer and electrical line easement(s) or fee simple property at no cost to the • District. The dedication of such easement(s), well site(s) and/or fee simple property shall be in (00047247.DOC v:11 15 addition to the dedication of water rights that may be required under a Water Delivery • Agreement and any other requirements of these Rules and Regulations, and shall be free and clear of all liens and encumbrances prior to approval of service to the Service Provider. (h) Dedication of Groundwater Rights: As a condition of a service, the District may require that the Service Provider dedicate to the District sufficient tributary, not nontributary, nontributary and designated basin water rights and groundwater rights necessary to supply water sufficient to service the Service Provider's Customers. Such dedication shall include the irrevocable consent to the use by the District, as a part of the District Water Supply, of all of the groundwater rights, which use includes without limitation the exclusive right to take, appropriate, produce, use and otherwise dispose of said water. The District has the sole discretion to determine the adequacy and sufficiency of the dedication of such ground water rights, and to determine whether, in the judgment of the District's Board, the groundwater rights are compatible with the District's Facilities and the needs and infrastructure of the Service Provider. The District may further require that the Service Provider consent to being served with such groundwater through the District's Water System, wherein such water may be commingled with the District Water Supply for the purposes of being furnished by the District, and that the Service Provider consent to the continuing jurisdiction of the Water Court or other agency with respect to such water rights, such groundwater rights be conveyed to the District free and clear of all liens and encumbrances prior to approval of service to the Service Provider. (i) Dedication of Water Rights: Sufficient water rights, water storage or related facilities or the equivalent thereof sufficient to provide water service to the Service Provider may be required to be dedicated to the District as a condition of service. The District • has sole discretion to determine the adequacy and sufficiency of the dedication of such water rights, water storage or related facilities, and to determine whether, in the judgment of the District's Board,the water rights, water storage or related facilities are compatible with the District's Facilities and the Service Provider's infrastructure and service needs. Such water rights, water storage or related facilities or monies shall be conveyed to the District free and clear of all liens and encumbrances prior to approval of service to the Service Provider. (j) Water Resources Fee: In the sole discretion of the Board, the Service Provider may satisfy all or part of the water resources, groundwater and/or well site dedication requirements stated above through monetary compensation, defined as a water resources fee, adequate to purchase or compensate the District for the water rights, groundwater rights, water storage or related water facilities required to provide such service to the Service Provider. The District may adopt policies from time to time, by Board resolution, regarding such determinations. (k) Reimbursement for Agreement Processing: The District may require in the application process,that on completion of the Board's approval or denial of a proposed Agreement the District may determine the actual cost expended by the District in considering any Agreement and require reimbursement by the Service Provider. 2.1.9 Responsibility for Costs of Providing Service within Service Provider's System: A Service Provider seeking to acquire water or wastewater service from the District shall be responsible for the design costs, construction costs, installation costs, and any other costs • {00047247 DOC v:i} 16 • and/or fees and charges associated with provision of water or wastewater service through the Service Provider's system from the Water or Wastewater Connection Point(s)to the Service Provider's Customers, except as otherwise provided pursuant to separate Agreement with the District. 2.1.10 Procedural Requirements for Acquiring Water or Wastewater Service: (a) Application: A Service Provider seeking service from the District shall submit an application on an approved District form. Any Agreement may contain any conditions, not contrary to law, for the provision of service. (b) Other Procedural Requirements: [Reserved]. 2.2 Fees,Rates and Service Charges. 2.2.1 Policy: Except as provided in any Agreement, all Costs of new construction,reconstruction,repair, replacement or enlargement of the District Facilities which are necessary to provide new, different or additional water or wastewater services within the District's Service Area shall be the responsibility of Service Provider and incorporated into the District's rate structure to insure the sustainability of water quality and quantity and the adequacy of water and wastewater service to Service Providers. Service Providers seeking to acquire water or wastewater service from the District, or seeking changes to existing service, shall have in place a structure for levying and collection of all applicable fees, rates and service charges, which shall be subject to review of the District prior to entering into an Agreement by the • District. The provisions of these Rules and Regulations apply regardless of whether the District or some other person contracts for, or initially pays for, such construction, reconstruction or enlargement of the District Facilities. The District Board may act other than as required in this section when it determines, in its sole discretion, that such action is in the best interests of the District, or is necessary to provide for the health, safety and welfare of the inhabitants and visitors of the Service Providers contracting for service with the District. 2.2.2 Payment of Fees: Subject to the terms of individual Agreements with the District, all fees due to the District shall be paid prior to connection to District Facilities and provision of service. 2.2.3 Schedule and Types of Fees, Rates and Service Charges: (a) Schedule of Fees, Rates and Service Charges: The District's fees, rates and service charges shall be as set forth in Exhibit A hereto [Reserved]. (b) System Development Charges: Except as provided in an Agreement, Service Providers shall pay system development charges and/or plant investment fees for service by the District. Such charges and fees shall be for all Costs associated with construction, development, reconstruction or expansion of all District Facilities, including but not limited to diversion structures, wells,pipelines, pumps, lift stations, storage facilities, collection or gathering pipelines, and all water or wastewater treatment facilities, and all other temporary or permanent structures necessary for the development of the District's Water or • Wastewater Systems, as applicable, depreciation, and repair and replacement costs and reserves, (00047247.DOC v9( 17 pursuant to an allocation formula determined by the Board. System development charges or • plant investment fees also may include but not be limited to, water resources fees as defined in Section 2.1.8(j), all Costs associated with acquisition of land, water resources, wells or diversion structures, easements,rights of way or permits necessary for the diversion, withdrawal, delivery, treatment, substitution of supply, or storage of the District's Water Supply or provision of water or wastewater service by the District. System development or plant investment fees shall be assessed as provided for in Exhibit A [Reserved]. System development or plant investment fees shall be non-refundable. (c) Connection Fees: Connection fees shall be charged to all Service Providers and shall be due and payable when application is made to the District for new or additional water or wastewater service and prior to the installation of a water or wastewater connection or as otherwise provided in an Agreement. Connection fees can be prepaid. Connection fees shall be calculated to recover all District expenses and costs associated with providing water or wastewater service to a Service Provider or other User as defined in Section 8.16(a). Connection fees may consist of different components such as: connection charge, development plan review fee, water resource development charge, and Master Meter charge. Water and wastewater connection fees shall be assessed as provided for in Exhibit A [Reserved]. Connection fees shall be non-refundable. (d) Service Charges: 1) Policy for Calculation and Payment of Service Charges: Customers' service charges shall be paid by all Service Providers based on rates and charges set • by the District pursuant to rate studies and after public hearing. Rates and procedures for payment of service charges to the District shall be as set forth in Agreements or these Rules and Regulations. It shall be the policy of the District to implement procedures for the timely and regular payment of service charges to the District. 2) Amended Service Charges: Agreements shall provide in those situations where, in the Board's sole discretion, the service charges do not represent fair, reasonable and equitable charges for the intended use, the Board may adjust the charges. 3) Payment of Service Charges: Billing cycles for statements for service charges to be paid to the District shall be as determined by the Board or pursuant to an Agreement approved by the Board. Charges for late payments,turn-on, turn-off, or other penalties, shall be added to such statements. Service charges shall be assessed as provided for in Exhibit A [Reserved]. Service charges or fees shall be non-refundable. 2.2.4 Billing Procedures for Service Charges : [Reserved]. • (00047247.DOC v ) 18 • ARTICLE 3. WATER SERVICE 3.1 Principles for Supplying Water Resources to Public Water Service Providers. 3.1.1 Policy Regarding Use of District Water System: Use of the District's Water System shall comply with these Rules and Regulations. The right to use the Water System is only by permission granted by the District through a Water Delivery Agreement or other Agreement. The District reserves the right to determine all matters related to the control and use of its Water System. The right to use of the Water System shall be subject to suspension, disconnection or revocation as set forth in these Rules and Regulations or in any Agreement with a Service Provider. 3.1.2 Water Policy: It is the policy of the District to provide Service Providers with single use water unless specified otherwise by Agreement. 3.1.3 Scope of District Water Supply: In order to provide for an integrated Water System as contemplated, the District may acquire water supplies by contractual agreements, purchase contracts, leases or other Agreements. The District Water Supply shall consist of all legally available water, including,but not limited to, supplies of non-potable water, potable water, first use or reuse water, tributary, not non-tributary, non-tributary and designated basin water rights and groundwater rights,return flows, banked return flow credits, or other legally available water supplies together with all well structures, diversion structures,easements, delivery systems, measuring devices and all other appurtenances thereto. All rights to water • held, owned or controlled by the District pursuant to any Agreement or conveyance, may be incorporated into the District's Water Supply and shall be available for delivery to Service Providers pursuant to a Water Delivery Agreement. 3.1.4 Ownership of Water and Return Flows: To the extent the District has dominion or control, pursuant to an Agreement or otherwise, of water supplies as part of the District Water Supply, the District shall have sole dominion, control,right and use of all water supplied through the Water System, subject to reasonable use thereof by Service Providers or their Customers in compliance with applicable Water Delivery Agreements and/or these Rules and Regulations. Such dominion and control shall continue without interruption as to all wastewater,return flows, runoff, sewage or tailwater attributable to or originating in water supplied through the Water System, pursuant to any applicable court decrees or regulatory restrictions. The District shall have the exclusive right to recapture such return flows or claim credit therefrom for exchange, replacement, augmentation, substitute supply or any other lawful purpose, and the District's dominion and control over the District's Water Supply shall continue to attach to all such return flows even after they return to the ground. All such return flows from water supplied through the Water System remain the property of the District. The District retains the sole authority to determine the yield of all water, water rights and augmentation plans which are offered to the District for any purpose. 3.1.5 Consent to Groundwater Appropriation: The owners of all land, their heirs, successors and/or assigns which overlies the groundwater comprising all or a portion of the District's Water Supply shall be deemed to have consented to the withdrawal by the District of • (00047247.Doc v } 19 all such groundwater unless consent shall be deemed to have been withheld as otherwise • provided by law upon the effective date of these Rules and Regulations. 3.2 District Water System and Service Provider Systems. 3.2.1 Ownership and Maintenance of Service Provider Water Service Facilities and Lines. (a) Each Service Provider's water service system, commencing from the Connection Point on the District's main water supply line for a Service Provider and continuing through the Service Provider's system, are the property and responsibility of the Service Provider to design, monitor, operate, regulate and maintain as determined by the rules and regulations for the Service Provider. All other water service lines,curb boxes, valve boxes and meter pits, or other improvements necessary for the Service Provider to supply water to its Customers are the property and maintenance responsibility of the Service Provider or Service Provider Customer(s) as determined by the rules and regulations for the Service Provider. (b) Leaks or breaks occurring at Connection Points to the District's Water Distribution System shall be repaired by the Service Provider within seventy-two(72) hours after discovery of such condition by the Service Provider or notification of such condition to the Service Provider by the District. If satisfactory progress toward repairing any leak or break has not been accomplished within such time period, the District shall take actions necessary to make all required repairs at the full expense of the Service Provider. The District reserves the right to make the repair at the expense of the Service Provider when, in the opinion • of the District, such repair is necessary to protect the operation of the District's Water System or for the protection of the health, safety and welfare of the inhabitants and visitors of the Service Providers served by the District. 3.2.2 Ownership and Maintenance of Master Water Meters and Related District Facilities: (a) It shall be the duty of all Service Providers to notify the District if a Master Water Meter and/or related facilities at any Connection Point are operating defectively within twenty-four(24)hours of discovery of such condition. It shall also be the duty of all Service Providers to maintain free and clear access to the Master Water Meter and all component parts making up the Master Water Meter assembly. (b) The District shall be responsible for the maintenance and repair of all Master Water Meters unless it determines that said meter has been willfully damaged, in which case the District shall have the Master Water Meter repaired or replaced and shall charge the Service Provider therefore. 3.2.3 Non-Potable Irrigation System: [Reserved]. 3.3 Protection of District Water Supply.Limitations to Protect District Water Supply: In order to protect the District's water supply from pollution and from activities that create a hazard to health and water quality and to protect the health, safety and welfare of the Service Providers and/or their Customers or to District's residents, the District will not provide service to • (00047247.DOC v:i E 20 • property that is used for a Pollution- Hazard Activity if the location of said property poses an unreasonable risk of contamination that could cause pollution to the District's Water Supply such that the District would not have adequate time following a release of contaminants to protect or provide for a substitute water supply. Such determinations shall be made in the sole discretion of the District. The District shall take all steps necessary in its discretion including contracts with Service Providers to protect the District Water Supply. 3.3.2 Additional Provisions: [Reserved] 3.3.3 Enforcement: [Reserved] 3.3.4 Prohibitions: [Reserved] 3.3.5 Violations: [Reserved] ARTICLE 4. WATER CONSERVATION 4.1 Compliance with State Laws: The District shall implement all measures required by law for water conservation with respect to the operation of the District Water System. 4.2 Development and Implementation of Water Conservation Programs. 4.2.1 Leak Detection: The District's objectives in implementing a leak • detection program include assessment of the impact of unaccounted-for water use and Water System loss estimates on the District's Water Supply, and identification and repair of leaks within the Water System to maintain a low and acceptable amount of unaccounted-for water use. The goal is to reduce Water System losses. (a) The District will conduct a water audit to determine the amount of water unaccounted-for or lost in the District Water System. The audit shall include recording information on the Water System, estimating leaks, estimating leak losses, estimating revenue losses from leaks, and estimating costs for repairs. (b) If unaccounted-for water losses from leaks are determined to be ten percent (10%)or more of total consumption, the District shall develop and implement a leak detection program. The program will traverse all of the Water Distribution System that has pipe over twenty (20)years old on a five-year basis to locate and repair leaks. All identified leaks, including leaks in Master Meters and valves, shall be repaired within seventy-two (72) hours. • )00047247.DOC v.1) 21 ARTICLE 5. • WATER QUALITY 5.1 Monitoring Water Quality. Unless provided otherwise in Water Delivery Agreements or other Agreements, Service Providers shall be solely responsible for meeting all applicable regulations for drinking water or other water quality standards from the Connection Point for delivery through the Service Provider's system to its Customers, including all sampling, monitoring, reporting, notice and compliance standards, regulations and requirements. 5.2 Commingling of Water Supplies. The District may commingle water from its various Water Supply sources provided that delivery requirements are met to Service Providers. 5.2.1 Standards: The District may require that water resources acquired for its Water Supply System meet certain minimum constituent standards for groundwater or other applicable standards and regulations. ARTICLE 6. PROVISIONS FOR WASTEWATER SERVICE 6.1 General. 6.1.1 Policy: Use of and all discharges of wastewater into the District's Wastewater System shall comply with these Rules and Regulations. The right to any use of the Wastewater System is only by permission granted by the District through a Connector Agreement. The District reserves the right to determine all matters related to the control and use • of its Wastewater System. The right to use of the District's Wastewater System shall be subject to suspension, disconnection or revocation as set forth in these Rules and Regulations or in a Connector Agreement with a Service Provider. 6.1.2 Service Area: As provided in a Connector Agreement, the form of which is attached hereto as Exhibit B, a Service Provider may only provide wastewater service within its approved service area. The District's wastewater service area is as defined by the local water quality planning agency. This Article describes the procedures for Service Providers requesting approval of an expanded or new wastewater service area. The sewer service area for the District shall only include the area approved by the local water quality planning agency and will only be expanded in accordance with the local water quality planning agency's amendment process. 6.1.3 Request for Approval from an Existing Service Provider: When an existing Service Provider wishes to provide wastewater service to any area outside the service area previously approved by the District,the existing Service Provider shall submit a request in writing to the District . The request shall include, at least, the following: (a) A map of the area showing the boundaries of the enlarged area and showing the existing and the proposed major sewers which will serve the area. The map shall show which existing connection point(s)will serve the additional area and if a new connection point(s)will be required. • (00047247.DOC va E 22 • (b) Information on the projected land use, zoning, residential densities, and commercial/industrial nature of the area. (c) The 10-year, 20-year and ultimate population projections of the enlarged area and the corresponding estimated average and peak quantity of flow expressed in million gallons per day (MGD). The flow data shall be in the form of a flow versus time curve projected to the ultimate development of the area. (d) The 10-year, 20-year and ultimate estimated quality of flow expressed in biochemical oxygen demand (BOD) and suspended solids (SS),plus any additional pertinent information regarding the quality of flow expected,particularly from industrial sources. (e) A letter from all existing sanitation districts or other sewer service entities overlapping or within five miles of the enlarged area stating the feasibility of providing service to the enlarged service area and the justification for not connecting to other existing facilities where feasible. (f) Institutional arrangements such as contracts and/or covenant terms for all users within the expanded service area to insure proper operation and maintenance of the connector's wastewater collection system. (g) Management capabilities, including user contracts, operating agreements,pretreatment requirements,etc., for controlling the wastewater collection system on a continuous long-term basis. • 6.1.4 Request for Approval from a New Service Provider: When a new Service Provider wishes to provide wastewater service to any area outside areas previously approved by the District or outside the approved service area of the District, the new Service Provider shall submit a request in writing to the District. The request shall include, at least,the following: (a) A map of the area showing the boundaries of the proposed area and showing the existing and the proposed major sewers which will serve the area. The map shall show which existing connection point(s) will serve the proposed area and if a new connection point(s) will be required. (b) Information on the projected land use, zoning, residential densities, and commercial/industrial nature of the area. (c) The 10-year, 20-year and ultimate population projections of the enlarged area and the corresponding estimated average and peak quantity of flow expressed in million gallons per day (MGD). The flow data shall be in the form of a flow versus time curve projected to the ultimate development of the area. (d) The 10-year, 20-year and ultimate estimated quality of flow expressed in biochemical oxygen demand(BOD) and suspended solids (SS), plus any additional pertinent information regarding the quality of flow expected, particularly from industrial sources. I (00047247.DOC v:1) 23 (e) A letter from all existing sanitation districts or other sewer service • entities within five miles of the proposed area stating the feasibility of providing service to the proposed service area and the justification for not connecting to other existing facilities where feasible. (f) Institutional arrangements such as contracts and/or covenant terms for all users within the proposed service area to insure proper operation and maintenance of the connector's wastewater collection system. (g) Management capabilities, including user contracts, operating agreements, pretreatment requirements, etc., for controlling the wastewater collection system on a continuous long-term basis. 6.1.5 Service Area Information: The existing or new Service Provider shall supply other information concerning the proposed additional service area when the District determines that the information is necessary to make a proper decision and appropriate application to the local water quality management agency. It is necessary that requests be submitted and approved by the District prior to proceeding with planning and construction of any District Facilities to serve the area. 6.1.6 Approval Procedures: When the service area adjustment requested by an existing or new Service Provider is within the District's approved sewer service area, the Board of Directors shall act on the request. Service Providers are advised that a minimum of thirty (30) days is required for consideration of service area adjustments within the District's approved • sewer service area. When the requested service area adjustment includes land which lies partially or completely outside the District's sewer service area, the Board of Directors shall act on the request and, if appropriate, process an Areawide Water Quality Management Plan Amendment application in accordance with the local water quality planning agency's requirements. Service Providers are advised that a minimum of six (6) months is required for consideration of service area adjustments partially or completely outside the District's approved sewer service area. 6.1.7 Post-treatment Waters: All water produced as a result of the treatment of wastewater in the District Wastewater System from whatever source shall be owned by the District and the District shall retail sole dominion,control and right of use of all such post- treatment water, subject to requirements of court decrees, statutory requirements and provisions of any Agreements. 6.1.8 Prohibited Wastes: Discharge of any water or Wastewater into the District's Wastewater System containing substances prohibited by these Rules and Regulations or not meeting the requirements set forth in this Article 6 is prohibited. 6.1.9 General Prohibition: No person shall discharge or cause to be discharged into a public sewer or in the District's Sewer service area, any harmful waters or wastes, whether liquid, solid or gas,capable of causing interference, obstruction or damage to any of the District Facilities or hazards to District personnel. Prohibited sewage shall include such quantity of clear • (00047247.DOC v:1( 24 • water injected into a public sewer which would interfere with the District's Wastewater treatment process. 6.1.10 Construction Modifications to Limit Harmful Waste: Some Customers or Service Providers may be required to install pretreatment facilities, including,but not limited to grease, sand, and/or oil interceptors into their building construction. As required by the District and set forth in Exhibit C hereto, in order to prevent the discharge of such materials and other prohibited wastes into the District's Wastewater System. 6.1.11 Lateral Size: The District shall require all Service Providers to adopt rules and regulations for the design, planning, locating, sizing, and construction of all service laterals and installation thereof, including change orders, in accordance with District standards and requirements set forth in Exhibit D [Reserved]. All costs and expenses of the Customer or Service Provider incurred for the installation and connection of service laterals to the District's Wastewater System shall be the responsibility of the Service Provider. The Service Provider shall be liable to the District for any loss or damage which may directly or indirectly occur by the installation of a service lateral. The Service Provider shall notify the District of any such damage immediately and shall repair such damage within seventy-two(72)hours. If such repairs are not made within such time,the District shall make such repairs and bill the Service Provider therefore. The Service Provider shall reimburse the District for such repairs within thirty (30) days of the date of occurrence. 6.1.12 Maintenance of Laterals: The District shall require Service Providers to adopt rules and regulations providing that Customers shall be responsible for all maintenance, • including routine maintenance or maintenance resulting from damage,repair and replacement of the service lateral from the point of connection from the Service Provider's sewer main. The Service Provider or Customer, as determined by the Service Providers' rules and regulations, is responsible for maintenance of the service laterals from the Customer's point of use to the Wastewater Connection Point. The Wastewater Connection Point shall be determined by the District pursuant to a Connector Agreement between the District and the Service Provider. Maintenance of the service laterals shall include all administrative, monitoring, servicing, repair of all damage whether from abnormal use or not, routine repair or maintenance, and replacements costs. ARTICLE 7. LIMITATIONS ON DISCHARGE 7.1 Limitations On Discharged Wastes/Prohibited Wastes. 7.1.1 Standards for Water or Wastewater Discharge into the District's Wastewater System: Service Providers shall comply with all applicable Pretreatment Standards and Requirements. No Service Provider or Customer shall discharge or cause to be discharged into the District's Wastewater System any storm water, surface water, ground water,roof runoff, subsurface drainage,cooling water, air conditioning wastewater or any other domestic, or commercial wastewater that does not meet National Pretreatment Standards. • (00047247.DOC v ) 25 7.1.2 Construction Modifications to Limit the Discharge of Harmful Wastes into • the District Facilities, Grease Interceptors/Traps and Sand/Oil Interceptors/Traps: Every Service Provider shall adopt rules and regulations approved by the District sufficient to provide for the proper handling of liquid wastes containing excessive grease, excessive sand or other harmful ingredients, as set forth in Exhibit C hereto. 7.1.3 Review of Plans for the Construction and Installation of Pretreatment Facilities: If any water or wastewater is discharged, or is proposed to be discharged, to the District Facilities (1) from restaurants or other food preparation establishments described above, or(2)that may contain the substances or exceed the limitations for standards for water or wastewater discharged into the District's Wastewater System, the Service Provider shall be responsible for contacting the District regarding planning,review, construction and installation of pretreatment facilities prior to discharging any water or Wastewater into the District's Wastewater System. A process for plan review shall determine the need, method, and size of pretreatment facilities required to pretreat or otherwise control the Wastewater to make it acceptable for discharge into the District Facilities. 7.1.4 Sampling Manholes: The District may require Service Providers to adopt regulations requiring the installation of one or more discreet sampling manholes. All placements of sampling manholes must be approved by the District prior to installation. 7.1.5 Interceptor/Trap Maintenance: (a) Responsibility for Maintenance: Service Provider regulations shall • require that it shall be the Customer's responsibility to ensure that grease and sand/oil interceptors/traps are maintained and in proper working order. The interceptors shall be unobstructed and available for periodic maintenance inspections and discharge sampling by the Service Provider and the District. (b) Inspection: Existing interceptor/trap installations shall be inspected by the Service Provider to determine compliance with the District's oil and grease discharge standards. Installations not able to achieve compliance with such standards due to improper design shall be modified or replaced in order to achieve compliance with District Design Standards, including design and sizing criteria as set forth in Exhibit D hereto. (c) Reports: Service Providers shall provide the District with periodic reports of maintenance as requested by the District. 7.1.6 Interceptor/Trap Requirements for Existing Property/District Facilities: Service Provider regulations shall require inspection of existing Customer facilities to determine whether any existing pretreatment facility is deficient in size, or waste emanating from the property, business or industry violates the District's Rules and Regulations and/or may cause harm to the District Facilities, or persons entering said District Facilities to perform maintenance, or to the treatment process and/or environment. The Service Provider shall require the Customer to install suitable pretreatment facilities or take other appropriate remedial measures as directed by the District. • (0004n47.DOC v:11 26 • 7.1.7 Construction Modifications to Limit Harmful Wastes,Wash Racks/Floor Slabs: All wash rack construction or modification plans must be approved by the Service Provider in accordance with District Design Standards set forth in Exhibit D hereto. ARTICLE 8. PRETREATMENT REQUIREMENTS 8.1 General. 8.1.1 Authority: This Article 8 is adopted by the District in accordance with the authority conferred in the Clean Water Act, and any regulations implementing the Clean Water Act, including, but not limited to,40 CFR 403.8, the Colorado Water Quality Control Act, and any regulations implementing the Colorado Water Quality Control Act, C.R.S. §§25-8-101 et and the Safe Drinking Water Act, and any regulations implementing the SDWA, with all the powers thereof which are specifically granted to the District, or are necessary or incidental to or implied from power specifically granted therein for carrying out the objectives and purposes of the District and this Article 8. The provisions in this Article 8 shall be called the Pretreatment/Industrial Waste Control Program of the District. 8.1.2 Compliance: The Pretreatment/Industrial Waste Control Program of the District is designed to enable the District to comply with all conditions of its National Pollutant Discharge Elimination System(NPDES)Permit, Federal Pretreatment Regulations, and any applicable sludge disposal regulations, and to meet the following objectives: • (a) To prevent the introduction of pollutants into the District Facilities which will interfere with the operation of the Water or Wastewater Systems or contaminate the sludge. (b) To prevent the introduction of pollutants into the Water or Wastewater System which will pass through the Wastewater System, inadequately treated, into the receiving waters or the atmosphere. (c) To prevent the introduction of pollutants into the Wastewater System which might constitute a hazard to humans or to animals. (d) To assure the District's ability to recycle and reclaim Wastewater and sludge. (e) To protect human health and welfare, the environment, property and the District's Publicly Owned Treatment Works. PART A RULES AND REGULATIONS FOR SERVICE PROVIDER USE OF DISTRICT WASTEWATER SYSTEM 8.2 Applicability. • [00047247.DOC v:1) 27 Any Service Provider, the sewage from which directly or indirectly enters the • Wastewater System of the District from areas within or without the boundaries or Service Area of the District, shall be subject to the requirements of this Part and shall be bound by these Rules and Regulations as they now exist or may hereafter be amended. All Service Providers with industrial customers are required to design and administer Pretreatment Industrial Waste Control Programs which are in accordance with this Part A of Article 8, and which will enable the District to comply with all pretreatment and effluent limitation conditions of its National Pollutant Discharge Elimination System(NPDES) Permit, Federal Pretreatment Regulations, and applicable sludge disposal regulations. 8.3 Compliance With Requirements. [Reserved] 8.4 Legal Authority Requirements. [Reserved] 8.5 Program Procedure Requirements. 8.5.1 Industrial Waste Survey: Each Service Provider shall formulate and implement procedures for conducting ongoing, comprehensive industrial waste surveys to locate and identify all Significant Industrial Users discharging to the Service Provider's sewer system. • The District shall make the final determination as to whether a particular Industrial User is a Significant Industrial User. To this end, the District may require that a Service Provider collect and forward to the District all information necessary to make this determination. 8.6 Extra-Jurisdictional Industrial Users. [Reserved] 8.7 Exemptions. A Service Provider administering a Pretreatment Program, separate from that of the District, which has been approved by the Regional Administrator of EPA or the Director of the Water Quality Control Division of the Colorado Department of Health in accordance with §403.11 of the Federal Pretreatment Regulations, may be exempted from compliance with certain provisions of this Article 8, as determined by the District. 8.8 Program Review. 8.9 [Reserved] Remedies. 8.9.1 Emergency Remedies: Where a discharge to the Wastewater System reasonably appears to present an imminent endangerment to the health or welfare of persons, or • (00047247.DOC va} 28 • presents or may present an endangerment to the environment, or threatens to interfere with the operation of the District, the District shall immediately initiate investigative procedures to identify the source of the discharge, and take any steps necessary to halt or prevent the discharge. If necessary, the District shall seek injunctive relief against the violating Service Provider and any User contributing significantly to the emergency condition. 8.9.2 Routine Remedies: If the District determines that a Pretreatment/Industrial Waste Control Program as administered by a Service Provider is not in compliance or that the discharge from a Service Provider is not in compliance with District Standards, the District shall issue a notice setting forth the Requirements and Standards not being complied with and directing the Service Provider to attain conformance to these Requirements and Standards within a period of ten (10)days. If after ten(10)days, the Service Provider has failed or refuses to comply with this notice, the District may issue an additional notice setting forth remedial actions to be taken by the violating Service Provider and a time schedule for attaining compliance with all Pretreatment/Industrial Waste Control Requirements and Standards. If after thirty (30)days notice, the violating Service Provider has not taken necessary steps to correct the violation, the District may assume in whole or in part Pretreatment/Industrial Waste Control Program responsibilities in lieu of the violating Service Provider. The District may continue in this capacity until the violating Service Provider agrees to the original terms of the notice and any additional terms which the District feels are necessary to ensure ongoing compliance by the Service Provider with all Pretreatment/Industrial Waste Control Requirements and Standards. The Service Provider shall be liable for all costs associated with the District's assumption of • responsibilities on behalf of the Service Provider and the District may recover such costs in any manner permitted by law. 8.10 Program Preemption. 8.11 [Reserved]Program Delegation. [Reserved] 8.12 District Monitoring. For the purpose of determining the quantity, quality, and other characteristics of any sewage which shall be or may be delivered and discharged into the Wastewater System by a Service Provider, or into the system of a Service Provider by any User, the District shall have the right at all reasonable times to enter upon and to inspect the Service Provider's system or any industrial or commercial installations connected thereto or any other connections which contribute sewage or Wastewater to the Service Provider's system and to inspect and copy records, to take samples and to make tests, measurements, and analyses of sewage or other wastes in,entering, or to be discharged into such Service Provider's system. 8.13 General Requirements Regarding Deleterious Wastes. None of the following described sewage, water, substances,materials or waste • shall be discharged into the District's Wastewater System; and each governing body of each {00047247.DOC v.1) 29 Service Provider shall prohibit and shall prevent any discharges from any outlet into its sewer • system, if such discharges cause or significantly contribute to a violation of any of the requirements contained herein: (a) Sewage of such a nature and delivered at such a rate as to impair the hydraulic capacity of the District's Wastewater System,normal and reasonable wear and usage excepted. (b) Sewage of such a quantity, quality, or other nature as to impair the strength or the durability of the sewer structures, equipment or treatment works, either by chemical or by mechanical action. (c) Sewage having a flash point lower than 187°F, as determined by the test methods specified in 40 CFR§261.21. (d) Any radioactive substance,the discharge of which, does not comply with Article RH 4.18 of the Colorado Rules and Regulations pertaining to Radiation Control(Volume 6 of the Code of Colorado Regulations, 6 CCR 1007-1, Part 4, et seq.). (e) Any garbage other than that received directly into the Service Provider's sewer system from domestic and commercial garbage grinders in dwellings, restaurants, hotels, stores, and institutions, by which such garbage has been shredded to such a degree that all particles will be carried freely under flow conditions normally prevailing in public sewers with no particle greater than one-half(1/2) inch in any dimension. • (f) Any night soil or septic tank pumpage, except by permit in writing from the District at such points and under such conditions as the District may stipulate in each permit. (g) Sludge or other material from sewage or industrial waste treatment plants or from water treatment plants, except such sludge or other material,the discharge of which to the District Wastewater System shall be governed by the provisions of these Rules and Regulations or any Connector Agreement or as otherwise authorized by the District. (h) Water which has been used for cooling or heat transfer purposes without recirculation, discharged from any system of condensation, air conditioning, refrigeration, or similar use. (i) Water accumulated in excavations or accumulated as the result of grading, water taken from the ground by well points, or any other drainage associated with construction. (j) Any water or wastes containing grease or oil and other substances that will solidify or become discernibly viscous at temperatures between 32°F and 150°F except by permit in writing from the District at such points and under such conditions as the District may stipulate in each permit. a (0004724zooC v:1) 30 • (k) Any wastes that contain a corrosive,noxious, or malodorous material or substance which, either singly or by reaction with other wastes, is capable of causing damage to the District's Wastewater System or to any part thereof,of creating a public nuisance or hazard, or of preventing entry into the sewers for maintenance and repair. (1) Any wastes that contain concentrated dye wastes or other wastes that are either highly colored or could become highly colored by reacting with any other wastes, except by permission of the District. (m) Any wastes which are unusual in composition;i.e.,contain an extremely large amount of suspended solids or BOD; are high in dissolved solids such as sodium chloride, calcium chloride, or sodium sulfate;contain substances conducive to creating tastes or odors in drinking water supplies;otherwise make such waters unpalatable even after conventional water purification treatment; or are in any other way extremely unusual unless the District determines that such wastes may be admitted to the District Wastewater System or shall be modified or treated before being so admitted. (n) Any substance which may cause the District's effluent or any other product of the District such as residues, sludges or scums,to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case, shall a substance discharged to the Wastewater System cause the District to be in non-compliance with sludge use or disposal criteria, guidelines or regulations developed under Article 405 of the Clean Water Act; any criteria, guidelines,or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act,or State criteria • applicable to the sludge management method being used. (o) Any substance which may cause the District to violate its National Pollutant Discharge Elimination System (NPDES) Permit or the receiving water quality standards. (p) Except for existing combined sewer facilities, any stormwater, directly or indirectly, from surface drains, ditches, or streams, storm or combined sewers,roof, areaway, sumps and sump pumps, or foundation drains, or from any other means, including subsurface drainage or groundwater. 8.14 Prohibited Discharges. None of the following described sewage, water, substances, materials, or wastes shall be discharged into the District's Wastewater System or into the sewer system of a Service Provider, by any User and each governing body of each Service Provider shall prohibit and shall prevent such discharges by any User, either directly or indirectly, into its sewer system: (a) Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the District's Wastewater System, the sewer system of a Service Provider or any of its connectors,or to the operation of the District. At no time shall any reading on an explosion hazard meter, at the point of discharge into the District's • Wastewater System or the sewer system of a Service Provider or any of its Customers (or at any [00047247.DOC v:l) 31 point in the Wastewater Systems), or at any monitoring location designated by the District in a • wastewater contribution permit,be more than ten percent (10%) of the Lower Explosive Limit (LEL)of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene,toluene, xylene, ethers, alcohols, ketones, aldehydes,peroxides, chlorates, perchlorates,bromates, carbides, hydrides, and sulfides. (b) Any solid or viscous material which could cause an obstruction to flow in the sewers or in any way could interfere with the treatment process, including as examples of such materials but without limiting the generality of the foregoing, significant proportions of ashes, wax, paraffin,cinders, sand, mud, straw, shavings, metal, glass,rags, lint, feathers, tars, plastics, wood and sawdust,paunch manure, hair and fleshings, entrails, lime slurries, beer and distillery slops, grain processing wastes, grinding compounds, acetylene generation sludge, chemical residues, acid residues, food processing bulk solids, snow, ice, and all other solid objects, material,refuse, and debris not normally contained in sanitary sewage. (c) Any Wastewater having a pH less than 5.0 for discharges from Industrial Users into the District's Wastewater System or the sewer system of a Service Provider or that of any of its Customers, or less than 6.0 or greater than 9.0 for other discharges into the District's Wastewater System, or wastewater having any other corrosive property capable of causing damage or hazard to any part of the District's Wastewater System or the sewer system of a Service Provider or any of its Customers, or to personnel. (d) Any wastewater having a temperature which will inhibit biological activity at the District's treatment plant,but in no case wastewater containing heat in such • amounts that the temperature at the introduction into the District's,Wastewater Treatment Works exceeds 40°C (104°F). (e) Any pollutants, including oxygen demanding pollutants (BOD, etc.)released at a flow rate and/or pollutant concentration which cause Upset. In no case shall a slug load have a flow rate or contain concentrations or qualities of pollutants that exceed for any time period longer than fifteen (15) minutes more than five (5)times the average twenty-four (24)hour concentration,quantities, or flow during normal operation. (f) Any water or wastes containing a toxic substance in sufficient quantity, either singly or by interaction with other substances, to injure or interfere with any sewage treatment process, to constitute a hazard to humans or to animals, or to create any hazard or toxic effect in the waters which receive the treated or untreated sewage. (g) Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, each in amounts that will cause interference or Upset. (h) Pollutants which result in the presence of toxic gases, vapors, or fumes within the system in a quantity that may cause acute worker health and safety problems. (i) Any trucked or hauled pollutants except at discharge points designated by the District. • {00047247.DOC vi{ 32 • (j) Any water or wastes containing pollutant quantities or concentrations exceeding the limitations in Article 8 of these Rules and Regulations, or the limitations in any applicable Categorical Standards. (k) Any wastewater discharges to the District's Wastewater System, except at locations approved by the District. 8.15 Specific Discharge Limitations—Service Providers. No Service Provider shall discharge to the Wastewater System at any time or over any period of time wastewater containing any of the following materials and substances in excess of the limitations provided herein: Limit mg/L 1. Cyanides (as HCN) 2 2. Oil and Grease (Hexane or approved solvent extractable) 75 3. Phenolic compounds (as Phenol) 10 4. Sulfides (as H2S) 10 PART B RULES AND REGULATIONS FOR USERS 8.16 Applicability. • (a) A User is any Person who contributes, causes, or permits the contribution of wastewater into the District's POTW. (b) Pursuant to its Service Plan, the District may provide wastewater service to Users through Service Providers. Any User, the sewage from which directly or indirectly enters the Wastewater System of the District from an area within or without the boundaries of the District, shall be subject to the requirements of this Part and shall be bound by these Rules and Regulations as they now exist or may hereafter be amended. Such Rules and Regulations may be enforced against any User. 8.17 General Discharge Prohibitions. No User shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation or performance of the POTW. These general prohibitions apply to all such Users of a POTW whether or not the User is subject to national categorical pretreatment standards or any other national, State, district, or local pretreatment standards or requirements: A User may not discharge any of the sewage, water, substances, materials, or wastes listed in Articles 8.13 or 8.14 of these Rules and Regulations. 8.18 Specific Discharge Limitations—Users. 8.18.1 District Limitations: No User shall discharge into the District Wastewater System or into any sewer system at any time or over any period of time, Wastewater containing any of the following materials and substances in excess of the limitations provided herein. These • (00047247.DOC v:1( 33 limitations may also be imposed directly on process wastewaters prior to dilution by domestic , and other Wastewaters discharged by the User: Limit mg/L 1. Arsenic 0.33 2. Cadmium 3.4 3. Chromium 3.6 4. Copper 6.1 5. Lead 2.2 6. Mercury 0.13 7. Molybdenum 0.71 8. Nickel 5.6 9. Selenium 0.66 10. Silver 2.9 11. Tetrachloroethene 1.5* 12. Zinc 15.6 * Notwithstanding this numeric limitation, the discharge of thy-cleaning process wastes, including new and used tetrachloroethene (perchloroethylene), still bottom oil, and separator water, is prohibited entirely. Where necessary the District may require that these wastes be physically prevented from discharging into the District's Wastewater System. 8.18.2 National Categorical Pretreatment Standards: Once promulgated, Categorical Standards for a particular industrial subcategory, if more stringent, shall supersede all conflicting discharge limitations contained in this Article 8, Part B, as they apply to that industrial subcategory. 8.18.3 State Requirements: State requirements and limitations on discharges shall apply in any case where they are more stringent than federal requirements and limitations or those contained elsewhere in this Article 8, Part B. 8.18.4 Dilution Prohibited: [Reserved]. 8.19 Insignificant Discharges. Notwithstanding the prohibitions and limitations contained in Articles 8.17 and 8.18.1 of these Rules and Regulations, the District may allow a proposed discharge to the system if the District determines that the quantity and quality of the discharge,both alone and in conjunction with similar discharges which might be affected by this determination, will have no material effect on the District's operations,including the quality of its effluent or sludges. Approval of the District must be received in writing before the discharge may commence, and the discharge must adhere to any terms and conditions of the District's approval. Approval of such a discharge is entirely at the discretion of the District, and shall not constitute approval of any additional or similar discharges. Disapproval of a proposed • {00047247.DOC v:1) 34 • discharge by the District shall not be subject to the appeal and hearing procedure set forth in these Rules and Regulations. 8.20 Accidental Or Unusual Discharges. An accidental or unusual discharge is a discharge which may disrupt Wastewater System treatment processes or operations, damage Wastewater System facilities, cause an NPDES Permit violation at the District's treatment plant or degrade sludge quality excessively, or which differs significantly in quantity or quality from discharges under normal operations. 8.20.1 Accidental Discharge Protection: Each User shall provide protection from accidental or unusual discharges of prohibited materials or other substances regulated by these Rules and Regulations. Infrastructure necessary to prevent accidental discharge of prohibited materials shall be provided and maintained at the Customer or User's own cost and expense. 8.20.2 Notification Requirements: (a) Telephone Notification. In the case of any accidental or unusual discharge, it is the responsibility of the User to immediately telephone and notify the District and the Service Provider providing sewage services of the incident. The notification shall include the location of discharge, type of waste, concentration and volume, and corrective actions. (b) Written Notice. Within five (5) days following an accidental or unusual discharge, the User shall submit to the District a detailed written report describing the • cause of the discharge and the measures to be taken by the User to prevent similar future occurrences. Such notification shall not relieve the User of any expense, loss, damage, or other liability which may be incurred as a result of damage to the POTW,fish kills, or any other damage to person or property; nor shall such notification relieve the User of any fines, civil penalties,or other liability which may be imposed by these Rules and Regulations or other applicable law. (c) Notice To Employees. A notice shall be permanently posted on the User's bulletin board or other prominent place advising employees whom to call in the event of an accidental discharge. Employers shall ensure that all employees who may cause or suffer such an accidental discharge to occur are advised of the emergency notification procedure. 8.20.3 Slug Discharge Plan Requirements: [Reserved] 8.21 Hazardous Waste Discharge Notification. Industrial Users shall notify the District, the EPA Regional Waste Management Division Director, and the state hazardous waste authorities in writing of any discharge into the POTW of any substance which, if otherwise disposed of, would be considered a hazardous waste under 40 CFR Part 261. The specific information required to be reported and the time frames in which it is to be reported are found at 40 CFR §403.12(p). 8.22 Wastewater Contribution Permits. I (00047247.DOC v:1( 35 [Reserved] • 8.23 Reporting Requirements For Significant Industrial Users. [Reserved] 8.24 Monitoring District Facilities. The District may require to be provided and operated at the User's own expense, monitoring facilities to allow inspection, sampling, and flow measurement of any discharges as necessary to determine compliance with the provisions of these Rules and Regulations. There shall be ample room in or near such sampling manhole or facility to allow accurate sampling and preparation of samples for analysis. The facility, sampling, and measuring equipment shall be maintained at all times in a safe and proper operating condition at the expense of the User. The sampling and monitoring facilities shall be provided in accordance with the District's requirements and all applicable local construction standards and specifications. Construction shall be completed within such a time frame as the District shall specify by written notification. 8.25 Information Submittal, Inspection and Sampling. The District may require any User to submit information as necessary to • determine compliance with the requirements of these Rules and Regulations. The District may inspect the facilities of any User to ascertain whether the requirements of these Rules and Regulations are being complied with. Persons or occupants of premises where wastewater is created or discharged shall allow the District or its representatives ready access at all reasonable times to all parts of the premises for the purposes of inspection, sampling,records examination and copying, or in the performance of any of their duties. The District, the Colorado Department of Public Health and Environment, and EPA shall have the right to set up on the User's property such devices as are necessary to conduct sampling, inspection, compliance monitoring and/or metering operations. Where a User has security measures in force which would require proper identification and clearance before entry into the User's premises, the User shall make necessary arrangements with security guards so that upon presentation of suitable identification, personnel from the District,the Colorado Department of Public Health and Environment, and EPA will be permitted to enter, without delay, for the purposes of performing their specific responsibilities. All records relating to compliance with pretreatment standards and requirements shall be made available to officials of the District, the Colorado Department of Health, and EPA upon request. 8.26 Wastewater Treatment. • [00047247.DOC va) 36 • Users shall provide wastewater treatment as required to comply with the requirements of these Rules and Regulations, and shall achieve compliance with all national categorical pretreatment standards within the time limitations as specified by the federal pretreatment regulations. Any facilities required to pretreat wastewater to a level acceptable to the District shall be provided, operated, and maintained at the User's expense. 8.27 Confidential Information. Information and data on a User obtained from reports,questionnaires, permit applications,permits, monitoring programs, and inspections shall be available to the public or other governmental agency without restriction unless the User specifically designates and is able to demonstrate to the satisfaction of the District that the release of such information would divulge sales or marketing data, processes, or methods of production entitled to protection as "Confidential Business Information" of the User. Wastewater constituents and characteristics will not be recognized as confidential information. It shall be the User's obligation to stamp each page, which has been demonstrated to the District's satisfaction to contain trade secrets, with the words "Confidential Business Information," "Confidential Information," or "Confidential." A failure by the User to designate and identify any document in this manner may result in the document losing its protection from disclosure as confidential business information. Confidential business information shall not be made available for inspection by the public but shall be made available upon request to governmental entities or agencies for uses related to these Rules and Regulations and the District's National Pollutant Discharge • Elimination System and Colorado Discharge Pollutant System (NPDES/CDPS)Permit. Confidential business information shall not be transmitted to any governmental agency or entity for other uses by the District except upon written request and after a ten(10)day notification and right to object is given to the User. Such notification shall not be required in certain circumstances provided for in 40 CFR Part 2. If after a request for public inspection, a person or entity challenges the determination of any record to protection as confidential business information, the User shall cooperate, to the fullest extent possible and at User's own expense, with the District in the defense of the determination. At the request of the District the user shall, at the User's expense,provide a defense to such challenge. 8.28 Remedies For Noncompliance; Enforcement. 8.28.1 Notice Of Violation: Whenever the District determines that any User has violated or is violating any provision of these Rules and Regulations or a Wastewater Contribution Permit issued or approved hereunder, the District may serve upon such User a verbal or written notice stating the nature of the violation(s). Where directed to do so by the notice, a plan for the satisfactory correction of the violation(s) shall be submitted to the District by the User,within a time frame as specified in the notice. 8.28.2 Administrative Orders: Whenever the District determines that any User has violated or is violating any provision of these Rules and Regulations, or any directives, orders, or permits issued or approved hereunder, the District may serve upon such User a written order stating the nature of the violations(s), and requiring that the User correct the violation(s) • {00047247.DOC v:1) 37 within a specified period of time; perform such tasks as the District determines are necessary for • the User to correct the violations; or perform such tasks and submit such information as is necessary for the District to evaluate the extent of noncompliance or to determine appropriate enforcement actions to be taken. 8.28.3 Compliance Orders; Compliance Schedules: Whenever the District determines that any User has violated or is violating any provision of these Rules and Regulations, or any directives, orders or permits issued or approved hereunder, the District may serve upon the User a written order requiring that the User submit, within a time frame as specified in the notification, a plan (compliance schedule) for the satisfactory correction of such violation(s). The compliance schedule must represent the shortest schedule by which the User will provide additional treatment or perform such other tasks as will enable the User to consistently comply with applicable requirements. The schedule shall contain increments of progress in the form of dates for the commencement and completion of major events leading to compliance (e.g., Hiring an engineer,completing preliminary plans for pretreatment systems, completing final plans,executing contracts for major components, commencing construction, completing construction). In no case shall an increment of progress exceed nine(9) months. Upon approval by the District, the compliance schedule will be issued to the User as an administrative order which contains the approved schedule milestones and any applicable reporting requirements. Issuance of a compliance schedule by the District does not release the User of liability for any violations. • Not later than fourteen (14)days following each date in the schedule and the final date for compliance, the User shall submit a progress report to the District including, at a minimum, information on whether or not the User complied with the increment of progress to be met on such date and, if not, the date on which it expects to comply with this increment of progress, the reason(s) for delay, and the steps being taken by the User to return to the schedule established. 8.28.4 Suspension Of Service: The District may suspend the wastewater treatment service when such suspension is necessary, in the opinion of the District, in order to stop an actual or threatened discharge which presents or may present an imminent or substantial endangerment to the health or welfare of persons, to the environment, causes pass through or interference or causes the District to violate any condition of its NPDES Permit. Any User notified of a suspension of the wastewater treatment service shall immediately stop or eliminate the discharge. In the event of a failure of the User to comply voluntarily with the suspension order, the District shall take such steps as deemed necessary, including immediate severance of the sewer connection, to prevent or minimize damage to the POTW System or endangerment to any individuals or the environment. The District shall reinstate the wastewater treatment service upon proof of the elimination of the non-complying discharge. A detailed written statement submitted by the User describing the causes of the harmful contribution and the measures taken to prevent any future occurrence shall be submitted to the District within fifteen(15) days of the date of occurrence. • (00047247.DOC v:1I 38 • 8.28.5 Permit Revocation: [Reserved] 8.28.6 Penalties: Any User who is found to have violated any provision of these Rules and Regulations, or any orders or permits issued or approved hereunder, shall be subject to a penalty not to exceed,except as noted below, ten thousand dollars ($10,000)for such violation. Each day on which a violation occurs or continues shall be deemed a separate and distinct violation. In the case of violations of monthly or other long-term average discharge limitations, penalties may be assessed for each day in the period covered by the violations. In addition to the penalties provided herein, the District may recover reasonable attorney's fees,court costs, court reporter's fees, and other expenses of litigation by appropriate suit at law against the User found to have violated these Rules and Regulations, or the order or permits issued hereunder. Such penalties shall be in addition to any actual damages the District may incur because of such violations. Where a violation is found to have caused Interference or Upset, the maximum penalty of$10,000 per violation as described above may be increased as necessary to allow the District to recover any fines or penalties paid by the District for NPDES Permit violations due to the Interference or Upset. 8.28.7 Legal Action: If any person discharges sewage, industrial wastes or other wastes into the District's wastewater disposal system contrary to the provisions of these Rules and Regulations, or any orders or permits issued hereunder, the District's attorney may commence an action for appropriate legal and/or equitable relief in the District Court of this • county. 8.28.8 Appeal and Hearing Procedure: Any User who is aggrieved by any enforcement action taken by the District pursuant to this Article 8.28 may within thirty(30) days of the receipt of notice of the determination, order, or finding being appealed request in writing that the District review the enforcement action. The request (Letter of Appeal) shall state all points of disagreement and objection to the determination, order, or finding. If the District reaffirms the action, the User may appeal this decision and request a hearing. (a) Hearing Request, Deadlines,Procedure and Related Matters [Reserved]. 8.29 Charges and Fees. Charges and fees to be assessed against Users will be determined by the District and, where instituted, will be set at a level to allow the District to recover its costs for administering elements of the Pretreatment/Industrial Waste Control Program. Program elements for which charges and fees may be assessed include,but are not limited to,permit applications; monitoring, inspection, and surveillance activities; and general program administration. • {00047 47DOCva} 39 ARTICLE 9. . CROSS-CONNECTION CONTROL AND BACKFLOW CONTROL POLICY AND REGULATIONS 9.1 General. 9.1.1 Policy: It is the intent of the District to protect the District Water System from contamination or pollution by backflow from a Service Provider's or Customer's internal distribution system or private water system, and to provide for the maintenance of a continuing program of cross connection control, which will systematically prevent the contamination or pollution of the District Water System as provided in Exhibit E hereto. 9.1.2 Responsibility:The District may delegate the responsibility for implementing a cross connection control program in accordance with this Article and for enforcement thereof. If a backflow prevention device is required at a Connection Point or at the point of connection from any Service Provider's system to any Customer's premises for the protection of the District Water System, District shall give notice in writing to the Customer to install an approved backflow prevention device at each service connection to the premises. The Customer shall install an approved device or devices at the owner's own expense.No provision of this article exempts the Customer from the cross connection control provisions for internal water distribution systems as contained in the Uniform Plumbing Code, which has been adopted by reference in Chapter 30 of this Code. 9.1.3 Service Provider Requirements. Every Service Provider shall adopt policies and regulations for cross-connection control and backflow control sufficient to: • (a) To protect the District's Water System and the water systems of Service Providers from the possibility of contamination or pollution by backflow or backsiphonage. (b) To promote the elimination or control of existing cross- connections, actual or potential,between its Customers' potable water system(s) and non-potable water systems, plumbing fixtures and industrial piping systems. (c) To provide for the maintenance of a continuing program of cross- connection and backflow control, which will systematically and effectively prevent the contamination or pollution of any potable water system. • [00047247.DOC v.1) 40 • ARTICLE 10. MISCELLANEOUS 10.1 Liability: 10.1.1 District Not Liable: No claim for damage shall be made against the District, and the District and its officials and employees shall not be liable by reason of damage resulting from, but not limited to, any of the following: breaking of any water or wastewater service line, supply line, main line, pipe, cock or meter by any employee of the District; failure of the water supply; shutting off or turning on water in the water main lines; the making of connections or extensions; damage caused by water running or escaping from facilities not owned by the District; damage to water heaters, boilers, or other appliances resulting from shutting water off, or from turning it on, or from inadequate, sporadic and excessive pressures; blockage in the system causing the backup of sewage;breakage of main lines by District personnel; interruption of water or wastewater service and the conditions resulting therefrom where said interruption of service is brought about by request of claimant,or by circumstances beyond the District's control; failure of District Facilities or Service Provider or Customer water and/or wastewater facilities to be located where the District's map indicates they should be; the shutting off of a sewer lift station and possible backflow resulting therefrom; failure to obtain access to isolation valves; or for taking certain actions with respect to the water or wastewater Systems of the District deemed necessary by the Board of Directors or its agents. This paragraph shall not relieve the District from liability for negligence of its employees, if such liability would otherwise have existed. The Service Provider is responsible to make these limitations known to their Customers at or before commencement of service. • 10.1.2 District Not Responsible for Damages: These Rules and Regulations shall not be construed to hold the District in any manner responsible for any damages to persons or property resulting from any inspections as herein authorized or resulting from the issuance or denial of any permit or failure to approve any Agreement as herein provided,or resulting from the institution of court action as allowed by law, or the forbearance by the District to so proceed. 10.1.3 Officials Not Liable: Any District official or employee,charged with the enforcement of these Rules and Regulations, acting in good faith and without malice on behalf of the District in the discharge of his official duties, shall not thereby render himself or herself personally liable for any damages that may accrue to persons or property resulting from any such act or omission committed in the discharge of such duties. Any suit or proceeding instituted against such official or employee, stemming from any act or omission performed by him in the enforcement or attempted enforcement of any provision of these Rules and Regulations, shall be defended by the District until final termination of the proceedings,in such a manner as to be consistent with the District's resolution indemnifying such officials and employees. 10.1.4 Non-Liability for Work of Others: The District does not assume any liability for any work performed by others. No claim shall be made against the District or any of its officers or employees on account of errors of omission or commission made by the District's licensees or independent contractors. S (00047247.DOC v:1} 41 10.1.5 Indemnity: The Service Provider(s) shall indemnify and hold harmless the • District from any losses or damages or claims that may directly or indirectly be occasioned by the installation or operation of any of the Service Provider's facilities or that may arise out of or in connection with any claim against the District resulting from the installation or operation of the Service Provider's facilities or those of their customers. These indemnities shall include all costs for repair or replacement of facilities and all attorneys' fees incurred by the District in defending against such claims. 10.1.6 Non-Waiver: The foregoing indemnity provision, nor any provisions of any contract or other service agreement, shall not constitute a waiver by the District of the defense of sovereign immunity or the Colorado Governmental Immunity Act, or any other defenses it may have to an action against the District, its officials or employees, nor a waiver of its insurance coverage. 10.1.7 Notices and Written Submissions: Any notice, written submission,report or other documentation required under these Rules and Regulations or any Agreement shall be provided to the District by first class, United States mail ("Mail")or by facsimile followed by Mail, to the following: Resource Colorado Water and Sanitation Metropolitan District c/o Special District Management Services 141 Union Blvd., Suite 150 Lakewood, CO 80228 Phone: (303)987-0835 • Fax: (303)987-2032 With copies to: Gateway American Resources, LLC Consultant to Resource Colorado Water and Sanitation Metropolitan District 9145 E. Kenyon Ave., Suite 200 Denver, CO 80237 Attention: Brad Simons,P.E. Phone: (303) 843-9742 Fax: (303) 843-0143 McGeady Sisneros P.C. 1675 Broadway, Suite 2100 Denver, CO 80202 Attention: MaryAnn McGeady Phone: (303) 592-4380 Fax: (303)592-4385 • (00047247.DOC v:11 42 ARTICLE 11. • PROVISIONS REGARDING MOSQUITO CONTROL SERVICES [RESERVED] ARTICLE 12. PROVISIONS REGARDING STREET IMPROVEMENTS [RESERVED] ARTICLE 13. PROVISIONS REGARDING EMPLOYEE AND PERSONNEL MATTERS [RESERVED] These Rules and Regulations are adopted this 18th day of July, 2005, by the Board of Directors of the Resource Colorado Water and Sanitation Metropolitan District. • S (00047247.DOC v.1) 43 Exhibit A • Schedule of Fees,Rates and Charges [Reserved]. System Development Fees [Reserved] Plant Investment Fees [Reserved] Connection Fees [Reserved] Service Rates and Charges [Reserved] Other Fees and Charges [Reserved] • • {00047247.DOC v:1) A-1 Exhibit B Connector Agreement for Wastewater Service • • {00047247 DOC v:11 B-1 Exhibit C . Construction Modifications to Limit the Discharge of Harmful Wastes into the District's District Facilities Grease Interceptors/Traps and Sand/Oil Interceptors/Traps 1. General Requirements for Service Providers' Rules and Regulations: a. Policy: Service Providers may require Customers to install a grease interceptor/trap and/or a sand/oil interceptor/trap on a waste line in order to protect the District's Wastewater Facilities from the introduction of large quantities of grease, sand and/or oil. A determination by the District that a grease interceptor/trap and/or sand/oil interceptor/trap is required to be installed on a waste line in order to protect the District's Wastewater System from the introduction of grease, sand and/or oil shall be final and conclusive direction to the Service Provider to implement such requirement with Customer. i. Property/District Facilities Requiring Grease Interceptor or Trap: Service Providers shall approve grease/interceptor traps only in accordance with District standards in Article 1(b) herein. An approved grease interceptor/trap shall be installed on the waste line leading from sinks, drains and all other fixtures or equipment in food preparation establishments such as (but not limited to)restaurants, cafes,lunch counters,cafeterias,bars and clubs,hotels, hospitals, factory kitchens, school kitchens, church kitchens or other establishments where grease may be introduced into the District Facilities. ii. Property/District Facilities Requiring Sand/Oil Interceptor: Service Providers shall approve sand/oil interceptor traps only in accordance with District • standards herein. An approved sand/oil interceptor/trap shall be installed on the waste line for all parking and repair garages, filling stations,car washes,truck terminals with washout facilities, engine steam cleaning facilities, commercial laundries, and any other commercial or industrial establishments that have wash racks or oil producing waste products. These establishments shall also have facilities to prevent storm or surface water drainage from entering the waste line. iii. Residential Property: Residential Customers shall not be required to install grease interceptors/traps or sand/oil interceptors/traps for their dwelling units and associated structures,unless the Service Provider determines there is a likely probability of a significant grease, sand or oil discharge into the District Facilities. iv. District Approval: All grease interceptors/traps and sand/oil interceptors/traps shall meet specific requirements established by the District, and the installation of all grease and sand/oil interceptors/traps shall be subject to inspection and approval by the Service Provider in accordance with District standards. Additionally, all interceptors and traps must be approved by the District prior to installation. If a District inspection is requested by the Service Provider, the District shall charge an inspection fee in an amount to be determined by the District pursuant to schedules set forth in Table_ [Reserved]. v. Interceptor/Trap Maintenance: Proper maintenance and operation of all grease and sand/oil interceptors/traps shall be the responsibility of the Customers and the Customers shall ensure that said interceptors/traps are maintained in proper working order. Service Providers shall require, at a minimum, the following: • (00047247.DOC v:i) C-1 (1) Maintenance of interceptor/trap contents shall be performed • by a contractor licensed to perform such work. Maintenance shall entail removal of entire interceptor/trap contents. Partial removal of contents (i.e., removal of grease layer, oil layer or sludge layer) is not allowed. Contents removed from interceptors/traps shall be hauled off site and disposed of properly. All records of maintenance of interceptors/traps and of off-site hauling and removal of interceptors/traps contents shall remain on-site and accessible for review by Service Provider personnel. Under no circumstances shall interceptors/traps contents be re- introduced to the District Facilities. Maintenance of all interceptors/traps shall be performed on an as needed basis and at least once every 6 months or more than once every 6 months if necessary for the protection of the District Facilities. The District may institute an enforcement action to ensure compliance with these requirements. b. Technical Specifications and Design Criteria for Grease and Sand/Oil Inceptors/Traps: (1) Definitions: (a) Fixture Unit: A rating in terms of gallons per minute (gpm)representing the maximum amount of water that can flow from a fixture or piece of equipment in one minute. The value of one fixture unit("F.U".)is equal to 7.6 gpm. (b) Grease Interceptors—Types A& B: Two compartment interceptors normally located outside of a building and of the following sized: • Type A: 750 - 1565 gallon capacity- see [Reserved] Type B: 1566 +gallon capacity- see [Reserved] (c) In-line Grease Traps: A prefabricated unit, generally made of metal, for the trapping of grease normally set indoors under a sink or near the fixture connected to it. In-like grease traps are only allowed where it is not possible to go outside with a larger trap or where there is only a minor concern with grease (this will be determined only by the Service Provider and District). In-line grease traps may be connected to any water source with a discharge temperature greater than 140°F(60°F). (d) Pretreatment Facilities: Structures,devices or equipment including,but not limited to, interceptors for neutralizing or removing deleterious wastes from wastewater prior to its discharge into the District Facilities. c. Sampling: A periodic collection of wastewater as it flows through the District Facilities and/or a customer's service line. (1) Sand/Oil Interceptors -Types A &B: Two compartment interceptors normally located outside a building and of the following sizes: Type A:750 750 - 1565 gallon capacity - • (00047247.DOC v:I) C-2 specifications to be determined • Type B: 1566+gallon capacity— specifications to be determined d. Testing: The laboratory analysis of wastewater. e. General Design Criteria for Interceptors: Establishments required to install grease and/or sand/oil interceptors due to the nature of their operations shall use the following design criteria. The design criteria stated below represent the minimum requirements for interceptors and do not reflect special circumstances that may necessitate increased sizing. f. All interceptor installations shall contain two manholes, one accessing the interceptor's discharge line and one accessing the interceptor's influent line.These manholes shall be accessible to the Service Provider and District at all times, and provide ample room for conducting discharge sampling and flow measurement activities. g. All interceptor installations shall meet the requirements of the District and all other local government requirements. The District will not be responsible for violations of Service Provider or other local government requirements. h. Interceptor installation, including equipment, structural design, backfilling, safety provisions, etc. shall be the sole responsibility of the Customer and their suppliers,contractors, and other agents. • i. Maintenance and removal of interceptor contents (i.e., grease, oil, sand, and water) shall be the sole responsibility of the Customer. j. All interceptors shall be accessible for inspection by the Service Provider and District. k. All interceptors shall be divided into two compartments, separated by a divider wall. The first compartment shall contain approximately 2/3 of the interceptor's total volume. 1. All interceptors shall have a minimum capacity of 750 gallons, shall be concrete, unless otherwise specifically authorized by the District, and of a single, monolithic pour and shall be constructed in accordance with the District's detailed drawings attached hereto as Exhibit_[Reserved]. m. Inlet and outlet pipes for all interceptors shall be elbowed down below the water surface. n. Grease interceptors shall have a first compartment grease volume equal to approximately 2 of the total first compartment water volume. o. Grease interceptor divider walls shall extend a minimum of 10" above the first compartment water surface. Water transfer to the second compartment shall be via a 90° • [00047247.DOC v:11 C-3 pipe elbow,turned down in the first compartment, with the bottom of the elbow located 6"to 12" • above the floor depending on interceptor size. P. In-line grease interceptors are not permitted unless specifically approved by the District. q. Sand/oil interceptors shall have a full-size divider wall between the first and second compartments. Flow between the compartments must travel over the top of the divider wall or through slots or ports near the top of the divider wall. r. Sizing Calculations for Grease Interceptors: Sizing calculations are to be prepared by the owner's engineer and submitted to the District per the following methods: s. Where food is served and seating capacity can be determined,compute: (Number of seats) x (0.9) x (2.2) =number of meals served per meal period. 0.9=a full capacity factor 2.2 =turnover rate per meal period or, (Number of meals served per meal period) x (2.5 gallons per • meal)=volumetric water capacity of the grease interceptor. t. Where food is prepared and where seating capacity or number of meals cannot be adequately determined, the following rule shall apply: The Service Provider shall establish the fixture unit values for various pieces of equipment that may require connection to a grease interceptor. The total number of fixture units shall be multiplied by 7.5 gpm to determine maximum rate of flow (gpm)into the grease interceptor. The volumetric water capacity of the unit shall be eight times the maximum rate of flow. The Service Provider shall establish the methodology for sizing grease interceptors for fixtures. u. Sizing Calculations for Sand/Oil Interceptors: Sizing calculations are to be prepared by the owner's engineer and submitted to the District per the following method: i. Total fixture units connected x 7.5 gpm x 5 minutes =interceptor size. The total fixture unit values shall be established by the Service Provider. v. Drawings for Technical Specifications and Design Criteria for Grease and Sand/oil Interceptors/Traps [Reserved]. • (00047247.DOC v:1) C-4 Exhibit D • District Design Standards and Standards and Requirements for Service Providers [Reserved] • • (00047247.DOC v:1) D-1 • Exhibit E Standards for Cross-Connection Control and Backflow Control Policy and Regulations 1. Definitions: When not clearly otherwise indicated by the context,the following words and phrases in this Article have the following meanings. a. Approved: Accepted by the public works department as meeting the applicable specification stated or cited in this article, or as suitable for the proposed use. b. Auxiliary water supply: Any water supply on or available to the premises other than the District approved public potable water supply. These auxiliary waters may include water from another purveyor's public potable water supply or any natural source such as a well, spring,river, stream,pond, lake, etc., or"used waters" or"industrial fluids."These waters may be polluted or contaminated or may be objectionable and constitute an unacceptable water source over which the District does not have sanitary control. c. Backflow: The undesirable reversal of the direction of flow of the water or mixtures of water and other liquid, gases,or other substances into the distribution pipes of the potable water supply from any source or sources caused by backpressure and/or back-siphonage. d. Back-pressure: The backflow of water or other contaminated fluids caused by a pump,elevated tank, boiler or other means that could create pressure within the Customer's or Service Provider's system greater than the District supply pressure. e. Backflow prevention device: Any device, method, or type of construction designed to prevent backflow or back-siphonage into the public water supply by isolating the Customer's or Service Provider's water system from the public water system. f. Air-gap: The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank,plumbing fixture, or other device and the flood level rim of said vessel. An approved air-gap will be at least double the diameter of the supply pipe, measured vertically, above the top of the rim of the vessel; and, in no case less than one inch. When an air-gap is used at the service connection to prevent the contamination or pollution of the public potable water system, an emergency bypass shall be installed around the air-gap system and an approved reduced pressure principle device will be installed in the bypass system. g. Double check valve assembly: An assembly of two independently operating approved check valves with tightly closing shut-off valves on each side of the check valves,plus properly located test cocks for the testing of each check valve. The entire assembly shall meet the design and performance specifications and approval of a recognized and District- approved testing establishment for backflow prevention devices. To be approved, these devices must be readily accessible for in-line testing and maintenance. h. Reduced pressure principle device: An assembly of two independently . operating approved check valves with an automatically operating differential relief valve (00047247.DOC v:1) E-1 between the two check valves, tightly closing shut-off valves on either side of the check valves, • plus properly located test cocks, for the testing of the check and relief valves. The entire assembly will meet the design and performance specifications and approval of a recognized and District-approved testing laboratory for backflow prevention assemblies.The device will operate to maintain the pressure in the zone between the two check valves at a level less than the pressure on the public water supply side of the device. At cessation of normal flow, the pressure between the two check valves will be less than the pressure on the public water supply of the device. In case of leakage of either of the check valves, the differential relief valve will operate to maintain the reduced pressure in the zone between the check valves by discharging to the atmosphere. When the inlet pressure is two pounds per square inch or less, the relief valve will open to the atmosphere. To be approved,these devices must be readily accessible for in-line testing and maintenance, and be installed in a location where no part of the device will be submerged. i. Back-siphonage: The backflow of water or other liquids, mixtures or substances into the distribution pipes of a potable water supply system from any source other than its intended source caused by the sudden reduction of pressure in the potable water supply system. j. Certified inspector and tester: Any person who has passed a state approved or sponsored testing and inspection course, and who is listed by the state as a certified inspector/tester. k. Check valve: A self-closing device which is designed to permit the flow of fluids in one direction and to close if there is a reversal of flow. 1. Colorado Department of Health Cross Connection Control Manual: A manual published by the state addressing cross connection control practices, which will be used as a guidance document for the city in implementing a cross connection control program. m. Compliance period: The time between the receipt by the Customer of a notice from the District or designee thereof to install, test, or repair a backflow prevention assembly and the day upon which such installation, testing, or repair shall be completed or ready for inspection by the District or a designee thereof. n. Contamination: Any impairment of the quality of the potable water by pollution from sewage, industrial fluids or waste liquids,compounds or other materials to a degree which creates an actual hazard to the public health through poisoning or through the spread of disease. o. Critical level: The critical level C-L or C/L marking on a backflow prevention device or vacuum breaker which is a point conforming to approved standards and established by the testing laboratory (usually stamped on the device by the manufacturer), which determines the minimum elevation above the flood-level rim of the fixture or receptacle served at which the device may be installed.When a backflow prevention device does not bear a critical level marking,the bottom of the vacuum breaker, combination valve, or the bottom of any such approved device shall constitute the critical level. • (00047247.DOC v:1) E-2 p. Cross connection: Any physical arrangement whereby a public water • supply is connected, directly or indirectly, with any other water supply system, sewer, drain, conduit, pool, storage reservoir,plumbing fixture, or other device which contains, or may contain,contaminated water, sewage, or other waste or liquid of unknown or unsafe quality which may be capable of imparting contamination to the public water supply as a result of backflow. Bypass arrangements,jumper connections, removable sections, swivel or changeover devices, and other temporary or permanent devices through which, or because of which, backflow could occur are considered to be cross connections. q. Cross connections, controlled: A connection between a potable water system and a nonpotable water system with an approved backflow prevention device properly installed that will continuously afford the protection commensurate with the degree of hazard. r. Flood-level rim: The edge of the receptacle from which water overflows. s. Hazard, degree of: The term derived from an evaluation of the potential risk to public health and the adverse effect of the hazard upon the public potable water system. t. Hazard, health: Any condition, device, or practice in the water supply system and its operation which could create, or in the judgment of the District, may create a danger to the health and the well being of the water consumer. An example of a health hazard is a structural defect, including cross connections, in a water supply system. u. Hazard, plumbing: A plumbing type cross connection in a consumer's • potable water system that has not been properly protected by a vacuum breaker, air-gap separation or backflow prevention device.Unprotected plumbing type cross connections are considered to be a health hazard. v. Hazard, pollutional: An actual or potential threat to the physical properties of the water system or to the potability of the public or the consumer's potable water system which would constitute a nuisance or be aesthetically objectionable or could cause damage to the system or its appurtenances,but would not be dangerous to health. w. Hazard, system: An actual or potential threat of severe damage to the physical properties of the public potable water system or the consumer's potable water system or of a pollution or contamination which would have a protracted effect on the quality of the potable water in the system. x. Industrial fluids system: Any system containing a fluid or solution which may be chemically, biologically or otherwise contaminated or polluted in a form or concentration such as would constitute a health, system,pollutional or plumbing hazard if introduced into an approved water supply. This may include,but not be limited to, polluted or contaminated waters; all types of process water and "used waters" originating from the public water system which may have deteriorated in sanitary quality; chemicals in fluid form; cooling tower and/or cooling towers that are chemically or biologically treated or stabilized with toxic substances; contaminated natural waters such as from wells, springs, streams, rivers, lakes, dams, ponds, retention pits, irrigation canals or systems, etc.; oils, gases, glycerin, paraffins,caustic and acid S {00047247.DOC v:1} E-3 solutions and other liquid and gaseous fluids used in industrial or other purposes or for fire- • fighting purposes. y. Multistory building: Any building having two or more levels, excluding the basement,or over forty feet in height. Single family units are excluded from this definition. z. Nonpotable water: Water that is not safe for human consumption or that is of questionable potability. aa. Pollution: The presence of any foreign substance (organic, inorganic, radiological, or biological) in the water that may degrade the water quality so as to constitute a hazard or impair its usefulness. bb. Potable water: Water free from impurities in amounts sufficient to cause disease or harmful physiological effects. The bacteriological, chemical, and radiological quality shall conform with state drinking water regulations. cc. Submerged inlet: A water pipe or extension thereto from the public water supply terminating in a tank, vessel, fixture or appliance which may contain water of questionable quality, waste or other contaminant and which is unprotected against backflow. dd. Vacuum: Any pressure less than that exerted by the atmosphere. ee. Vacuum breaker: Atmospheric nonpressure type: a vacuum breaker designed so as not to be subjected to static line pressure or installed where it would be under • pressure for not more than twelve hours in any twenty-four-hour period. ff. Vacuum breaker: Pressure type: a vacuum breaker designed so as not to be subjected to static line pressure. gg. Water service connection: The terminal end of a Service Provider's service connection from the Service Provider's water system, i.e., at the curb stop shut-off valve, property line, or meter. There will be no unprotected takeoffs from the service line ahead of any meter or backflow prevention device located at the point of delivery to the Service Provider's or Customer's water system. Service connection will also include water service connection from a fire hydrant and all other temporary or emergency water service connections from the public potable water system. 2. Requirements. a. Water Systems of Service Providers: Service Provider water systems consist of the source and distribution facilities of their water system to the point of connection of the Customer's system up to the District's Water System. The source includes all components of the facilities utilized in the production, treatment, storage, and delivery of water to the Service Provider's distribution system. The distribution system includes the network of conduits used for the delivery of water from the source to the Customer's water service connection. • (00047247.DOC v.1} E-4 b. Plan approval: Service Providers shall adopt requirements setting forth • the following: i. All building plans involving water/waste water service, plumbing plans for additions or alterations to existing plumbing systems, and/or irrigation system installation submitted to a planning or building department and shall be reviewed by the public works department and approved prior to the issuance of a building permit. ii. Submitted plans must show: (1) Water service type, size and location. (2) Meter size and location. (3) Backflow prevention assembly size,type and location. (4) Fire sprinkling systems service line, size and type of backflow prevention assembly. c. Installation: Service Providers shall adopt requirements for installation of backflow prevention devices as follows: i. An approved backflow prevention device will be installed at or near the property line,before the first branch line leading off the service line wherever any of the • following conditions exist: (1) In the case of premises having an auxiliary water supply which is not or may not be of safe bacteriological or chemical quality and which is not acceptable as an additional source by the Service Provider,the public water system will be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard. (2) In the case of premises in which any industrial fluids or any other objectionable substance is handled in such a fashion as to create an actual or potential hazard to the public water system, the public water system shall be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard. This will include the handling of process waters and waters originating from the public water system which have been subject to deterioration in quality. (3) In the case of premises having internal cross connections that cannot be permanently corrected and controlled, or having intricate plumbing and piping arrangements, or where entry to all portions of the premises is not readily accessible for inspection purposes making it impracticable or impossible to ascertain whether or not dangerous cross connections exist,the public water system shall be protected against backflow from the premises by installing a backflow prevention device in the service line. {00047247.DOC v.1) E-5 ii. Backflow prevention devices are to be installed in an accessible • location to facilitate inspection, testing and maintenance. Adequate drainage area for the device must be provided for in the event that water is released. iii. All connections to the Service Provider's water system, including all existing connections, shall conform or be brought into conformance with the requirements of this chapter within one year of adoption of this chapter. iv. All backflow prevention assemblies shall be installed downstream of the water meter in accordance with the installation details contained in the manuals referenced in Article v. Before installing a backflow prevention assembly,pipelines shall be thoroughly flushed to remove foreign material. vi. Backflow prevention valves shall not be used as the inlet or outlet valve of the water meter. Test cocks shall not be used as supply connections. vii. In order to ensure that backflow prevention assemblies continue to operate satisfactorily,it will be necessary that they be tested by a Colorado State Certified Cross- Connection Control Technician approved by the Service Provider, at the time of installation, and no less than annually thereafter. Such test shall be conducted in accordance with the Foundation for Cross-Connection Control and Hydraulic Research performance standards and field test procedures as directed by the Colorado Department of Health. The backflow assembly test • results,plumbing permit and test permit number shall be supplied to the public works department within ten days of the test. viii. The Service Provider will inspect all containment installations and the District may inspect the same upon request. ix. All costs for design, installation, maintenance, repair and testing shall be borne by the Customer. x. All fire sprinkling lines shall have a minimum protection of an approved double check valve for containment of the system. xi. All glycol (ethylene or propylene)or antifreeze systems shall have an approved reduced pressure principal assembly for containment. xii. Dry fire systems shall have an approved double check valve installed upstream of the air pressure valve. xiii. Backflow prevention assemblies shall be installed and inspected in accordance with the codes in Article [Reserved]. xiv. Backflow prevention assembly installations shall be inspected and approved for use by the Service Provider and upon request, the District. Inspections must be scheduled at least twenty-four hours in advance of the desired inspection time. • (00047247.DOC v:1) E-6 d. Standards: Backflow prevention devices shall adhere to the following • standards: i. Any backflow prevention assembly required herein shall be of a model and size approved by the Service Provider. The term approved backflow prevention assembly shall mean an assembly that has been manufactured in full conformance with the standards established by the codes in Article_[Reserved]. ii. Backflow prevention assemblies currently installed which are not approved shall be replaced with approved assemblies properly installed. iii. Backflow assemblies used on fire lines shall have O.S. and Y. valves listed by Underwriter Laboratories (UL), Factory Manual (FM) and the National Fire Protection Association. iv. Backflow prevention devices currently installed that are not approved shall be replaced with an approved device within one year of adoption of this chapter, unless the device fails an annual operational test. If the device fails any such test, it will be replaced within ten business days with an approved device. v. The following testing laboratory has been qualified by the District to test and certify backflow prevention devices for all Service Providers: [Reserved]. • Testing laboratories other than the laboratory listed above will be added to an approved list as they are qualified by the District. 3. Testing Requirements. a. Inspections,testing, and repair.—non-residential connections: It is the responsibility of the Customer to have certified inspections and operational tests made on the backflow prevention device upon installation and at least annually thereafter. The District may require certified inspections at more frequent intervals. These inspections and tests shall be made at the expense of the Customer and will be performed by a certified inspector approved by the Service Provider. A backflow prevention device will be repaired or replaced at the expense of the Customer whenever a device is found to be defective. • (00047247.DOC vA} E-7 i. Annually, it will be the obligation of the Customer/User at any • premises where any backflow prevention assemblies are installed to have a certified test made of these assemblies. In those specific instances where the Service Provider deems the hazard to be great enough, it will require certified inspection at more frequent intervals. The cost for any test under this section shall be at the Customer's expense. All tests shall be performed by a certified technician approved by the Service Provider. ii. As necessary, the assembly shall be repaired or replaced at the expense of the Customer/User whenever the assembly or assemblies are found to be defective. Records or copies of same, of all such tests, repairs or replacement shall be kept by the test of the assembly and the Customer/User, and a copy or copies shall be sent to the Service Provider within ten days of the test, as described in Article_[Reserved]. iii. All testing gauges shall be tested and calibrated for accuracy yearly, or more often in the event of questionable readings. iv. The Service Provider retains the right to test or otherwise check the installation and operation of any containment assembly at any time. v. This section shall also apply to all irrigation services. b. Inspections, testing and repair—residential connections: It is strongly encouraged that all residential water service connections have certified inspections completed annually. All inspections and tests shall be made at the expense of the Customer and will be • performed by a certified inspector approved by the Service Provider and reported as described in Article_[Reserved]. i. All water service connections served by the District or a consecutive water system or water district Service Provider served by the District that have any type of auxiliary water supply will be tested according to Article_ [Reserved]. ii. In those specific instances where the District deems that a hazard to the District water system exists, it will require a certified inspection to be completed within five working days of written notification. Annual inspections will continue, based on this chapter, until the public works director deems that a hazard no longer exists. c. Right of entry. i. The Service Provider representative and/or designee assigned to inspect premises relative to possible hazards shall carry proper credentials of his or her office and, upon exhibit of which, said representative shall have the right of entry to inspect any and all buildings and premises for cross-connections in the performance of his or her duties. If such entry is refused,the District or Service Provider or the designated authorized representative thereof shall have recourse to every remedy provided by law to secure entry. ii. This right of entry shall be a condition of continuation of water service in order to provide assurance that the health, safety and welfare of the people throughout the District and Service potable water distribution system is maintained. Where building security • (00047zazDOC v:1( E-8 is required, the backflow assembly or assemblies should be located in an area not subject to • security. Questions regarding proper credentials should be directed to the Service Provider. d. Reporting and record-keeping: The certified inspector will report on a form approved by the Service Provider,the results of inspections,tests, and maintenance to the Service Provider and the property owner. This report will be submitted to the Service Provider within ten days following the completion of the inspection, test,or maintenance of the device. The certified inspector shall also, on a form approved by the Service Provider, attach a card to the backflow prevention device following each inspection, test, or maintenance activity to document and date the activities performed. Records of all inspections, tests, or maintenance activities, including materials and parts changed, shall be kept by the certified inspector, the property owner, and the Service Provider for a period of not less than five years. 4. Enforcement and Fees. a. Compliance. i. Customers shall cooperate in the installation, maintenance, testing or inspection of backflow prevention assemblies. Failure to cooperate shall be grounds for the discontinuance of water service to the premises, or the requirement for air-gap separation from the public potable water system. ii. Service of water to any Customer may be discontinued by the Service Provider if unprotected cross-connections exist on the premises, or if any defect is found • in an installed backflow prevention assembly, or if a backflow prevention assembly has been removed or bypassed. Service shall not be restored until such conditions or defects are corrected. iii. Discontinuance of service may be summary, immediate and without written notice whenever, in the judgment of the District administrator or the designated representative thereof, upon the recommendation of the public works director, such action is necessary to protect the purity of the public potable water supply or the safety of the District Water System. b. Violations and penalties. i. Any person who violates any of these Standards shall be punished by a fine of one thousand dollars ($1,000.00). ii. Each such Customer shall be guilty of a separate offense for each and every day during any portion of which any violation is committed, continued or permitted by any such person. iii. The District is authorized to seek recovery of all present and future damages, costs and other relief to which the District is entitled and obtain any available judicial remedies related to maintenance of a cross-connection or any violation of the provisions of this chapter • (00047247.DOC v:1) E-9 A.G. .Wassenaar 2180 South Ivanhoe Suite SO Geoteduiical and Environmental Consultants 303-7594100 F es.e175yp20 • C. www.egwassenaaccom PHASE I ENVIRONMENTAL SITE ASSESSMENT HARMS PROPERTY WELD COUNTY,COLORADO • PREPARED FOR GATEWAY AMERICAN PROPERTIES, LLC HP FARMS LLC HP FARMS 880 LLC 9145 EAST KENYON AVENUE,SUITE 200 DENVER,COLORADO 80237 LAWRENCE B. CASTLE,P.C. 999 18Th STREET,SUITE 2201 DENVER,COLORADO 80202 FEBRUARY 28,2005 PROJECT NUMBER E05134.E1 • TABLE OF CONTENTS TITLE PAGE EXECUTIVE SUMMARY 1.0 INTRODUCTION 1 2.0 PURPOSE AND SCOPE OF WORK 1 3.0 SITE DESCRIPTION 2 4.0 SITE RECONNAISSANCE 3 4.1 Property Grounds 4 4.2 Surrounding Properties 12 5.0 TBREATENEDAND ENDANGERED SPF1JRRASSESSMENT 12 6.0 INTERVIEWS 13 7.0 ` SITE HISTORY 14 7.1 Weld County Assessor Records 14 7.2 USGS Topographical Maps 16 7.3 Cultural Feature Maps 17 • 7.4 Aerial Photographs 18 8.0 PUBLIC RECORDS REVIEW 20 8.1 NPL(Superfund)and SPLSites 22 8.2 Resource Conservation Recovery Act(RCRA)Notifiers Listing 22 8.3 RegisteredUnderground Storage Tanks(USTs) 23 8.4 Oil and Gas Production Weis 23 8.5 Unmapped Sites 25 9.0 FINDINGS AND OPINION 26 10.0 CONCLUSION 27 11.0 RECOMMENDATIONS 29 12.0 LIMITATIONS 29 13.0 DEVIATIONS 30 • FIGURES 1-2 SITE MAPS ATTACHMENTS A. PHOTOGRAPHS B. THREATENED AND ENDANGERED SPECIES STUDY C. PUBLIC RECORDS RESEARCH D. QUALIFICATIONS B. REFERENCES • i EXECUTIVE SUMMARY • At the request of Gateway American Properties, LW, A. G. Wassenaar conducted a Phase I Environmental Site Assessment of the subject property, identified as the Harkis Property, approximately fifty-six hundred and twelve acres situated north of Interstate 76,located six miles east and nineteen miles south of Greeley,Colorado. The property was evaluated for potentially significant on-site environmental contamination through a property inspection, interviews with individuals associated with the site, a review of historical property uses, and a review of environmental records available from government agencies. AGW's inspection included visual and physical observations of the subject property to identify possible contamination or contamination sources, and a drive-by survey of the nearby area The subject property consists of roughly nine square miles of land possessing distinct visible • characteristics. Three residential properties with associated outbuildings were located on the subject property, at 23431,23275, and 25195 Weld County Road 22. These residential sites contained houses, sheds, garages, barns, utility lines, water wells, and septic systems. These homes were occupied at the time of the site visit. A shop and four outbuildings were also located on the subject property, approximately one-half mile south of County Road 22. Significant staining was not observed at any of the residences or shop facilities. Various types of inert debris were noted on the property The majority of the subject property was vacant land used for grazing and agricultural purposes. Various fences and overhead electrical lines traversed the property,and watering holes and windmills were observed in numerous locations. Fifty-two oil/gas wells were observed onsite,in addition to s • twenty-eight collection/separator stations with above groumd storage tanks. Native grasses,brush, yucca,cacti,and scrub oak vegetated the subject property. Characteristic wetland type vegetation was observed in the vicinity of drainages and in the vicinity of Klug Lake. The subject property was predominantly surrounded by vacant agricultural property, large lot residential properties, and o0 and gas wells. The town of Hudson is located less than five miles southwest of the subject property,directly south of Interstate 76. An ecological assessment of the subject property was performed in conjunction with the Phase I ESA,to determine the presence of threatened and endangered species on the property. No habitats were identified that are capable of supporting any species protected under the Endangered Species • Act of 1973(as amended). Historical research for the subject property revealed that structures historically located on the property are no longer present. The residences currently located on the subject property were constructed between 1959 and 2000. The site has historically been used for agricultural and grazing purposes. Oil and gas wells have been in place on the property since the 1970's. Records of the U.S.Environmental Protection Agency,the Colorado Department of Public Health &Environment,the Colorado Department of Labor and Employment,and the Colorado Oil and Gas Conservation Comnnission were evaluated for information on hazardous materials and land sources of pollutants/hazards of potential concern, including known complaints and spills. A review of ii • public records maintained by these agencies did not reveal any potential off-site sources of contamination within one mile of the subject property. We have performed a Phase I Environmental Site Assessment in general conformance with the scope-of-work and limitations ofASTM Practice 111527-00 for the property identified as the Harkis Property in Hudson, Colorado. Any exceptions, or deletions from this practice are described in Section 13.0 of this report. This assessment has identified several environmental conditions which should be addressed by the Client,including • Inert debris was observed on the property, and small quantities of chemical substances were stored within structures on the site. AGW recommends that all • debris and chemical substances be removed from the subject property by the current tenants/owners prior to acquisition of the property. • All water and irrigation wells on the property should be properly abandoned in accordance with State of Colorado regulations. • Buildings historically present on the subject property are no longer in place. Therefore,asbestos containing building materials may be uncovered if the demolition debris was not removed from the site. This assessment has revealed no evidence ofrecognized environmental conditions in connection with the property,with the exception of the following; • iii • • Sixty-nine oil / gas well locations are reported by Colorado Oil and Gas Conservation Commission for the subject property. Fifty-two wells are currently opearating and were observed during the site visit. The remaining wells have been abandoned and/or plugged In addition to these well sites,twenty-eight collection/ separator stations with above ground storage tanks were observed on the property. AGW believes these wells and collection / separation stations, as well as their associated network of underground transmission lines, pose a potential environmental threat to the natural resources of the subject property. This report was written to summarize AGW's findings during a Phase I Bnvironrnental Site Assessment of the subject site. Although AGW completes thorough studies,no warranty is made • of the accuracy, completeness, and timeliness of information obtained from government or third party sources. No parties,except the Client,are authorized to review this report unless they agree to waive any possible claims against A G. Wassenaar,Inc.,arising from such use. iv • Phase I Environmental Site Assessment Hands Property Hudson,Colorado February 28,2005 1.0 INTRODUCTION As requested,A.G.Wassenaar,Inc.(AGW)has completed a Phase I Environmental Site Assessment (ESA) for the subject property identified as the Harkis Property,approximately fifty-six hundred and twelve acres situated north of Interstate 76, six miles east and nineteen males south of Greeley, Colorado. The project was conducted for Gateway American ' opu tR .,LW. 2.0 . PURPOSE AND SCOPE OF WORK AGW's assessment is designed to be in general accordance with Phase I Environmental Site • Assessments as established by the American Society of Testing and Materials (ASTM), Standard Practice Designation E 1527-00. The assessment consists of a site reconnaissance to identify potential environmental problems;interviews with individuals having knowledge of the subject site;a review of publicly available records pertaining to environmental resources at the subject site; and a report documenting AGW's findings,opinion,and conclusions. This report will identify recognized environmental condition which have been identified in relation to the subject property(if any)and provide recommendations for any further action. The term recognized environmental condition is defined as the presence or likely presence of any hazardous substances or petroleum products on the property under conditions that indicate an existing release,past release,or material threat of a release of any hazardous substances or petroleum products into structures on the ( 1 • • property or into the ground, ground water, or surface water of the property. The term includes hazardous substances or petroleum products even under conditions in compliance with laws. The term is not intended to include de minims conditions that generally do not present a material risk of harrn to public health or the environment and that generally would not be the subject of enforcement action if brought to the attention of appropriate government agencies. 3.0 SITE DESCRIPTION The subject property can generally be described as Section 2,and portions of Sections 11, 12, 13,14, and 15,Township 2 North,Range 65 West of the Sixth Principal Meridian; Sections 7 and 8, and portions of Sections 4, 5, 9, 17, and 18,Township 2 North, Range 64 West of the Sixth Principal Meridian;and Section 32,Township 3 North,Range 64 West of the Sixth Principal Meridian. The site • is composed of approximately fifty-six hundred and twelve acres situated north of Interstate 76 near Hudson,Colorado. Physical setting information for the site is described in Table I below. • 2 Table I Physical Setting Elevation of Subject Property Appro>®ately4,820-4,950 feet above mean sea level Source:USGS Topographic Gradient Varied topography across site Topographic Maps.King Lake, oradc Colorado,1950 (revised 1978) Closest Surface Water A portion of King lake lies Milton Reservoir,Colorado, 1950 within property boundary lines, (revised 1971) Box Elder Creek extends south of King Lake,intermittent drainages and ponds on subject property canals FEMA Agency Flood Insurance Portions ofthe subject property r_ Rate Map Zone surrounding King Lake,Box Elder(reek;and the intermittent Source:FEMA Panel stream traversing Section&lie #08026609000 within Zone A:Areas of 100 year Road_ The remaining areas of the property lie within Zone O Areas ofmiaimal flooding. • The National Flood Insurance Program identifies portions of the subject property within the flood hazard area inundated by 100-year floods. This characteristic of the subject property should be considered in the planning of future development. 4.0 SITE RECONNAISSANCE The property was inspected the week of January 24,2005. The inspection included a complete visual survey of the subject property(including a physical inspection of the property grounds for visible signs of contamination or contamination sources),as well as a drive-by survey of the nearby area. Maps of the property are included as Figures 1 and 2 of this report,and photographs taken during the site visit are included in Attachment A. • 3 • 4.1 Property Grounds The subject property consists of approximately 5,600 acres of land possessing distinct visible characteristics. Site reconnaissance observations are in Table II below and shown in Figures 1-2 and Attachment A of this report. A stamnary of each section follows the table below. Table II Site Reconnaissance Observations Current use The subject property was mostly vacant land-. historically used far agricultural purposes. Three residmtiat properties and surrounding outbuildings,as well as a shop and associated outbuildings are included within the property boundaries Configuration Irregular shaped property approximately 9 square miles in size Vegetation The site was dominated by native grasses and brush, sagebrush,yucca,cacti Drainages Drainages located on parcels of the property are • discussed in section summaries below Structures or other improvements on the subject Three residences and associated outbuildings,shop and Property outbuildings,overhead electrical lines,oil/gas wells, polo-and pad-mounted trans6otmers,buried utilities including natural gas pipelines,barbed wire forces, watering holes,windmills Roads adjoining the property and roads,streets,parking County Road 49,County Road 22,County Road 20, facilities on subject property and County Road 51;various unimproved roads traversed the property Debris Inert wood,metal,and vegetative debris were observed on site,limited empty oil containers,drums Hazardous substances and petroleum products stored on Stored substances within residences and/or the subject property outbuildings included herbicides,bovine medications, paints,miscellaneous household cleaners and or automotive repair products Storage Tanks Propane tanks were in place at the residences Vent pipes None visible Utility lines Overhead power lines,burial utility lines,buried natural gas transmission lines Odors Odors detected onsite are discussed in section summaries below Pools of Liquid None 4 • Table II(continued) Site Reconnaissance Observations ✓ Drums Various empty 55-gallon drams,one drum containing an unidentified substance located at the shop at 25195 County Road 22 Unidentified Substance Containers Small quantities of various substances stored within residences and outbuildings on the subject property,no significant leakage or improper storage PCBs None oldie trausfarmas observed at the subject property appeared to be leaking or damaged Pits.Ponds,or lagoons astern observed in the rear of the residence at 23431 Weld County Road 22 Wetlands CLanctaiatic wetland vegetation in the vicinity of ugIake Stained soil or pavement De minims staining observed within the shops on the property,soil staining observed at gas wells Stressed vegetation None Wells Fifty-two ml/gas wells,and 28 oft and gas collection/ separation stations were observed daring the site visit. • These wells are discussed in section summaries below, as well as in Section 8.4 of this report One monitoring well located in Section 2,and one temporary ground water monitoring well located in Section 12 are dico.cced below. Summary:Section 2, Township 2 North,Range 65 West Ten ail/gas wells were located within this section during the site visit. In addition to these wells,four collection/separation stations with above ground storage tanks were in place in this section. Various unimproved roads traversed the section,providing access to the wells. A canal,dry at the time of the visit,traversed north to south on the western portion of the property. A monitoring well,assumed to be for measuring groundwater levels,was observed adjacent to the drainage. Two natural gas"pig launching"stations and two windmills were observed on this section. A two-inch monitoring well was in place along the unimproved road on the western portion of the property,adjacent to the dry canal. • 5 • Various fences, buried natural gas pipelines, and overhead electrical lines traversed the section in numerous locations. Summary:Section 11, Township 2 North,Range 65 West Two oil/gas wells and two collection/separator stations with above ground storage tanks were in place on Section 11. The eastern half of the section is included within the boundaries of the subject property,and contained two pivot sprinkler systems and one water well house. Overhead electrical lines were in place along the northern, eastern, and southern section lines, and evidence of buried natural gas pipelines was noted Summary:Section 12, Township 2 North,Range 65 West Four oil/gas wells and three collection/separator stations with above ground storage tanks were • observed on this portion of the subject property. One 2"temporary groundwater monitoring well was observed in the vicinity of the wells identified as Hudson Kersey Ranges UT.2 and Lazy 6-12A. The origin of this well is unknown. AGW contacted Kerr McGee,the owner of these two wells,to obtain information regarding this monitoring well,however,AGW has not received a response. The majority oldie site appears to have historically been used for agricultural and/or grazing purposes. Two pivot sprinkler systems and associated well houses are located in this section. A drainage,extending south of Klug Lake,traversed the property from north to south,and was dry at the time of the site visit. A horse corral was noted at the western bank of the drainage,approximately 0.25 miles north of County Road 22. Various dirt roads and overhead electrical lines traversed the property. Buried natural gas transmission lines are assumed to be in place. 6 Two residences were located at the southern boundary of the section,directly north of County Road • 22. The first residence,located at 23431 was occupied by the property owner Other than the ranch style home, nine outbuildings have been constructed on the property. The majority of these outbuildings appeared to have been used for livestock purposes,including the making parlor. A cistern was located in the rear of the residence,which appeared to be approximately 5 feet deep and contained approximately 3 feet of what appeared to be water. Substances stored in the milking parlor included various bovine medications,weed sprays,and herbicides.Materials stored within the residence include household cleaners,joint compound,paints and lacquers. The residence located at 23275 County Road 22 appears to be used strictly for residential purposes. There was one outbuilding at this residence,the eastern half of the building was being used to store one vehicle,and the western half was a room for the tenant's pet dogs. Each of the residences had a propane tank and overhead electrical lines serving the home and outbuildings. There was no evidence ofany 6rming or livestock activities currently being • conducted at either residence. AGW recommends that all stored substances and items within the residences and outbuildings be removed by the current property owner prior to acquisition of the property Summary:Sections 14/15, Township 2 North,Range 65 West Four oil/ gas wells and one collection/separator station with an above ground storage tank were located on this portion of the subject property. One plugged well was positioned near the center of Section 15. The majority of the property appeared to be used for agricultural purposes. Pivot sprinkler systems and water well houses were in place on these two sections. Overhead electrical lines,buried natural gas lines, and barbed wire fences were observed on this portion of the property. • 7 • Summary:Section 13, Township 2 North,Range 65 West Five producing oil and gas wells are reported by COGCC in this section,however,only four of these wells were observed at the time of the site visit. In addition to the wells,two collection/separator stations with above ground storage tanks were in place. A strong odor was observed in the vicinity of the well identified as UPRR 62 Pan Am Unit G 2,located directly south of County Road 22 and stained soft as well as a strong odor were observed at the well labeled as Ilarlos 42-13,located west of County Road 49. A piviot sprinkler system, and two water well houses were in place on the northwest quarter of the section. A natural gas "pig launching"station was in place at the eastern boundary oft e section,directly west of County Road 49. A kge,currently empty shop,and livestock sheds and yards were in place in the renter of the section. Staining on the floor of the shop appeared to be minimal and is not expected to significantly impact the subject property. Debris,apparently inert in nature,was observed within a drainage traversing the property behind the shop. Debris was also • noted in a drainage with north-south orientation traversing the eastern half of the section. Overhead electrical lines, unimproved roads,and various barbed wire fences traversed the property. Summary:Section 7, Township 2 North,Range 64 West Five oil/gas wells and four collection/separator stations with above ground storage tanks were located on this portion of the subject property. In addition to the wells,a windmill was observed at the central portion of the section. Debris observed onsite included a boat,a toilet,and pieces of concrete,all of which are inert in nature. Two sets of overhead electrical lines were in place at the northern boundary, and an unimproved road traversed the site at the eastern boundary. Cow carcasses,in varying stages of decomposition,were observed on this section. 8 • Summary:Section 18, Township 2 North,Range 64 West The COGCC identified three oil/gas wells on the subject property in this section. Two ofthese wells were identified during the site visit,the remaining well could not be located Two collection/separator stations with above ground storage tanks were in place in this section. An unimproved road entered the property from County Road 49, traversed southeast toward the center of the section and then forked and bordered the southeast quarter of the section. County Road 51 was in place at the eastern boundary of the section,where one residence,excluded from the subject property,was located. An irrigation pond,which was dry at the tint ofthe site visit,was in place at the southeastern-most portion of the section,at the intersection of County Roads 51 and 20. Overhead electrical lines,barbed wire fences,livestock watering holes,and unimproved roads were identified on the subject property. Swnmaty:Section 17, Township 2 North,Range 64 West • Three oil/ gas wells and two collection/separator stations with above ground storage tanks were observed on this Section. There was no evidence of the abandoned oil/gas well reported by the COGCC in the northwest quarter ofthis section. Overhead electrical liras were in place at the western and southern boundaries,and buried natural gas pipeline markers were observed along County Road 51,located at the western boundary of the property. A residential home was in place directly east of County Road 51,which was excepted f omthe boundaries of the subject property. Watering holes and cow carcasses were observed in various locations in this section. Summary: Section 8, Township 2 North,Range 64 West Three oil/gas wells and three collection/separator stations with above ground storage tanks were in place in Section 8. The COGCC reports two additional well locations,and one plugged well in this • 9 • section. No evidence of these wells was observed during the site visit. A windmill was in place in the northern central portion of the section, where a shallow,dry, drainage traversed the property from north to south. A topographic depression,where a pond was formerly located,is currently dry,and several cow carcasses are located in the vicinity of the dry pond. A newly constructed residence and shop were in place at the southwest portion of the section,at 25195 County Road 22. The residence and shop were not surveyed by AGW,however,uses ofthe subject property are not expected to extend beyond normal residential use. One partially full diem located on a wood pallet,was located at the southeast corner ofthe shop. No significant staining was observed in the vicinity ofthe shop,and based on its relatively recent construction,AGW does not anticipate any activities on this property to have gigflifir-arely impacted the site. Summary:Section 9, Township 2 North,Range 64 West 41 Two oil/gas wells and one collection/separator station with an above ground storage tank were in place at the southeast corner of Section 9. Overhead electrical lines traversed north to south at the eastern boundary of the section,and a fence delineated the southern boundary,as well as the excepted parcel in the southeastern-most comer of the section. Various other fences traversed the subject property. Two sets of overhead electrical lines were in place at the northern boundary. The topographic gradient was relatively fiat,with a slight slope to the northeast. The vegetation consisted primarily of sand and sagebrush. Summary:Sections 4/5, Township 2 North,Range 64 West The eastern half of Section 5, and the southwestern quarter of Section 4 were included within the property boundary. One oil well was located on Section 5 during the site visit, and a collection/ 10 S separator station was also located at this well site. There was no evidence of the abandoned well r�yo,ted by COGCC in the northeast quarter of Section 5. A fence traversed north to south along the center of Section 5,and another was in place traversing east to west across the center ofboth sections. A concrete structure, possibly the former location of a windmill site, was in place at the southern boundary of Section 4. Swales and dry ponds were observed in the northern portion of Section 5. Summary:Section 32, Township 3 North,Range 64 West Thirteen oil/gas wells are in place in Section 32. In addition to these wells,three collection/separator stations with above ground storage tanks were observed during the site visit. A natural gas station,two wood outbuildings,and a horse corral were noted in the southwest corner of the section. A windmill was in place in the southern portion of the section. Various fences and buried natural gas pipelines were noted during the site visit. There was no surficial evidence of the four abandoned/shut in wells • located in this section. In general,oil and gas production wells present an environmental hazard during all stages of their use, including: initial construction and development, production, and through underground or surface transport. At each stage of the process of oil and gas production,significant potential for hydrocarbon release is present. The Colorado Oil and Gas Conservation Commission(COGCC)has records for sixty-nine wells located on or directly adjacent to the property. Of these sixty-nine wells, fifty-two wells and twenty-eight oil and gas collection/separation stations were observed during the site visit. Based on this information,AGW believes these oil/gas wells and the separator/collection stations are a recognized environmental condition in relation to the subject property. 11 411 4.2 Surrounding Properties The subject property was predominantly surrounded by vacant property,large lot residential homes, and land used for agricultural purposes. Newer residential homes were in place in Sections 5 and 6. Interstate 76 is positioned less than two miles south of the southernmost property boundary. Downtown Hudson is in place directly south of Interstate 76, to the south and west of the subject property. King Lake is positioned directly north of the property boundary in Section 12. 5.0 THREATENED AND ENDANGERED SPECIES STUDY An ecological assessment of the subject property was performed in conjunction with the Phase I ESA. Mr.Jerry Powell of Wildlife Specialties,L.L.C.performed a field reconnaissance on January 25,2005. The Vegetation types were mapped on topographical maps and described by plant species,presence, and abundance. Using a pedestrian survey,an assessment of habitat types present,their condition,and • the suitability for supporting sensitive species were evaluated. The project area was traversed latitudinally to identify basic habitat types,make observations of the species use of the habitats, and identify which species are currently using these habitats. Binoculars were used to examine areas for use by wildlife prior to disturbing those areas by walking through them. Observations of habitat also were made,where possible,by driving around the property on the numerous oil and gas roads. No habitats were identified that are capable of supporting any species protected under the Endangered Species Act of 1973(as amended). The full report can be found as Attachment B to this report. 12 6.0 INTERVIEWS Dave Perkins,Property Owner Mr. Perkins was interviewed during the course of the site visit,the week of January 24, 2005. He purchased the land approximately ten months ago from Dick HaliCis. Mr.Patina does not perform any fanning or ranching activities on the subject property. He believes that some structures that were once located on the fart are no longer present. He currently owns four residences, three of which are included in the boundaries of the subject property. Mr. Pairing is unaware of any enviozunental incidents that may have impacted the subject property during his time of ownership. Christine Harkis, Property Tenant Ms.Harlds was interviewed by telephone on February 2,2005. Ms.Hands indicated that the farm was owned by the family, and her great grandfather first began farming and ranching activities on the • property in the late 1800's. The property reportedly began as a cattle ranch and then grew to include fanning activities. Crops historically grown and cultivated include corn,wheat, barley, alfalfa, and pinto beans. During the last year of ownership,the only crop harvested on the property was alfalfa. Ms. Harkis does not recall any dumping activities occurring on the site, and stated that waste oil generated during maintenanceandreparoffarmvehicleswaskeptindrmmandhauledotfsite. Vehicle maintenance was performed in the yard of her grandfathers house,located at 23431 County Road 22. No significant staining was observed at this location at the time of the site visit. Dick Darkly,.Former Property Owner AGW contacted Mr. Harkis on February! 2, 2005 to conduct a telephone interview. It was his grandfather who started the farm in the late 1800%. According to Mr.Hands,pesticides and herbicides • 13 • were not used excessively,and he eventually contracted the work to an outside company. Five ASTs were formerly located on concrete pads at the residences on County Road 22,Mr.Harkin stated that these tanks had not leaked significantly. Mr.Harkis is unaware ofany dump sites on the property,and indicated that he had never witnessed any unofficial dumping on site. 7.0 SITE HISTORY The historic land use ofthe subject property and the surrounding areas were examined with the purpose ofinterpreting,where possible,the past activities that have or may have negatively impacted the natural resources of the site. The references reviewed included Weld County Assessor Online Property Profiles; USGS topographical maps of King Ranch Quadrangle from 1951 and 1950(photorevised 1971);Milton Reservoir Quadrangle from 1951 and 1950(photorevised 1971);and Weld Countymaps sheets 6 and?from 1978.Cultural Features maps from 1937/41,1947,1947/56, 1969/75,and 1969/80 • were reviewed These maps were obtained from Satisfi Environmental Information of Greenwood Village,Colorado. Aerial photographs dating from 1963 to 2003 were also reviewed 7.1 Assessor Records Weld County online assessor records were researched for all structures on the subject property. The following dates of construction were identified 14 • Table III Dates of Construction Location Bdldh Date of Construction 25195 County Road 22 House 1999 Shed 2000 23275 County Road 22 House 1967 Shed-Equipment 1973 Shad-Cattle 1980 Shed-Utility 197I 23431 County Road 22 House 1959 Dairy bfilkihgParlor 1960 Prefab Metal Building not repotted Grain Bin not reported Grain Bin 1960 Shed-Cattle 1968 • Grain Bin 1968 Storage-Utility Grain 1980 Shed-Cattle 1970 Shed-Cattle 1960 • 15 • 7.2 USGS Topographical Macs Table IV Topogra_p_bicat Maps USGS 1 Direction I Description Topographical Map Milton Reservoir 7.5- Subject Property Primarily vacant land;Box Elder Creek on southwest portion minute map: and Nam Canal East on northwest went ponds, 1951 windmill,and wells are shown on the property;six small King buildings are depicted on the property,unimproved roads Ranch 7.5 shown on the southern and fan portion;County Road minute map:1951 22 on the west portion;CounntyRoads 49 and 51 identified North Vacant land;King lake located north of the propaty in Section 12;Box Elder Credo continua north ofKlug Lake East Vacant laud;unimproved roads in place fmtha east South Vacant land;several small nruc1ure5 County Road 18 in place south of the eastern portion of the property and mamba mad is located along Box E1da Creek,to the south of the central part of the property. West Vacant land;Babe Seep Canat an unhnprovcd road is in place along this cant several small structures and . unimproved roads depicted Milton Reservoir 7.5- Subject Property Little change from 1951;a pond is located in the center of minute map: Section 8;structures in Sections 18 and 9 are no longs 1950(photorevised shown;several additional structures and unimproved roads 1971) are in place King Rauh 73 North No significant change front 1951 minute map:1950 (p►otorevbed 1971) Eau No significant change from 1951 South No significant cLmge from 1951 West No significant change from 1951 Weld County Map Subject Property No Series Sheets 6&7 °1 changes (197*) North No significant changes East No signifcmt changes South No significant changes West No significant changes 16 • 7.3 Cultural Features Maps Table V Cultural Feature Maps Map I Direction Description 1937/41 Subject Property Primaniyvaeaot land;Box Elder Creek flows through Section 12, and Section 7;structures shown in Sections 8,12,17,18;both unimproved and paved roads are depicted on the property. North Box elder Creels several small structures depicted East Ono structure east of Section 17 South Paved and unimproved roads are depicted;several structures are in place;Box Elder Creek to the south ofthe property in Section 13. West Hera Canal and several small structures are shown west of the property 1947 Subject Property No significant changes • North No significant changes East No signifeutt change South No significant changes West No significant changes 1947/56 Subject Property Some structures previously located on the property are no longer in place;additional small structures shown on the property North No significant change East No significant changes South No significant changes West No significant changes 1969/75 Subject Property Power transmission lines are depicted across the northern portions of Sections 7,8,and 9 North No significant changes • 17 • Table V(continued) East A gas transmission*dine is depicted one-halfmtle east of the propauY South No significant changes West Beebe Seep is depicted west of the Property 1969/80 Subject Property No significant changes North No significant changes East No significant changes South No significant changes West No significant changes 7.4 Aerial Photographs Table VI Aerial Photographs • Aerial Photograph I Direction Description 1963 Subject Property The property is primarily vacant land;with undeveloped — 1 portions and cultivated fidds;small ponds and drainages are presort on various portions of the property,a large Pond with 8 drainage(lowing to the south is shown in center portion of Section 8;numerous unimproved roads/dirt tracks traverse the property,several farm/ranch building campleaes appear on various portions of the property;Box Elder(reek crosses the central portion of the subject property from south to north North Vacant undeveloped and cultivated land;Klug lake is located in the northeast quarter of Section 12,with Box Elder(reek continuing north of the lake East Vacant undeveloped and cultivated land South Vacant undeveloped and cultivated land West Vacant undeveloped and cultivated land;Sevaal seeps and drainages 1977 Subject Property Oil/gas wells indicated throughout property,Nero Canal adjacart to dirt road running north/south in Section 2 of the subject property,ty,continuing development of unimproved roads, no other significant changes 18 • Table VI(coniinued) Aerial Photograph Direction , Description North Vacant undeveloped and cultivated land with additional dirt road*oil wells indicated in several locations East Vacant undeveloped and cultivated land with additional dirt road*oil wells indicated in several locations South Vacant undeveloped and cultivated land with additional dirt roads;oil wells indicated in several locations West Vacant undeveloped and cultivated land with additional dirt roads;oil wells indicated in several locations 1994 Subject Property No significant change North No significant changes East No significant changes South No signi. rot changes West No significant changes 1999 Subject Property Pond and drainage in Section 2 appear diminished in size North No significant changes • East No significant changes South No significant changes West No significant changes 2003 Subject Property Additional wells,tanks,roads and buildings are visible on the propony North No significant changes East No significant changes South No significant changes West Nosi„ificantch Oil/gas wells and collection/separator stations with storage tanks have been historically located on the property and adjacent properties since the 19701 As indicated in Section 4.1, these wells and collection stations are considered to be a recognized environmental condition in relation to the subject Property • 19 • In addition,some structures historically located on the subject property are no longer in place. These structures may have been constructed with asbestos containing materials. Although there is no specific evidence of demolition debris on the site,it is possible that asbestos containing or other demolition debris remain in the subsurface soils of the property. If anything unusual is discovered during excavation or construction activities,AGW should be contacted immediately. SA PUBLIC RECORDS REVIEW A review ofpublic records was completedbySat fiEnvironmentallnforamtionofGreenwoodVr7lage, Colorado. This record search was defined to met or exceed the(ASTM)guidelines for a Phase I Environmental Assessment records search. The search area defined by ASTM varies from adjacent properties to a maxim=of a one mile radius. • The information reviewed for this assessment includes the following: National Priorities List(NPL) Superfund sites; State equivalent NPL sites (SPL); facilities investigated for potential releases of hazardous materials to the environment(Comprehensive Environmental Response,Compensation,and Liability Information System(CERCLIS));hazardous waste facilities(RCRA); documented spills or hazardous releases; leaking underground storage tanks (LUST); registered underground and aboveground storage tanks (USTs/ASTs);and solid or hazardous waste landfills. Summarized data follows with specific information and mapping details contained in Attachment D. 20 • Table VII Summary of Publicly Available Environmental Records Database Description Facilities Found Wirt Federal Databases The Naticasl Priorities Lid(NFL)is the UEPAS database of®controlled NPL or abandoned baardoes waste Acidities that have been listed fns priority 1.0 0 remedial editor under the 8uperfmd Program. The USEPA msiutai is a database ofRQtA Militica that ere undergoing b rsdhe aerie'. A'corrective action'order issued when there has is id CORRACTS1.0 0been■release ofhaardau waste or omAitumis into the envimoment from •RCRA facility. TSDp. The UEFA maintains a&debaw ofRQtA halides aaooiaeed with 0.3 0 ireamrent,stamp,or disponi(18D)ofhaardaw waste. The QSRQn database M•compilation Maiden that US33TA besot is CBRt�9 an:mtlyinestipatingSr•releasetrthreatenedrelewufbsaabau 0.3 0 substances subject Lome Cumprabsnsiw 13avimomeatl Recunse, Cal at sod Liability Ad(CBRC1A)of 1980. NFRAP(No Father Remedial Action Plumed)facilities have been NFRAPtemowd and archived how t�Alr list of CTtltUB.ekes(see above). 0.23 This atepryalso includes faalities that ban received a No Action Dete®mtioa understate vdastarydemap statutes. The EmergencyReeponse Notification S Wsm(3Rt S)is a listing compiled bSpill releases ofpetrolsum and haardanssubstaowsto the air,soil the USEPA and the Coast Que.Naked Response Center oand/or 025 0 • weer. The Reaoures Cs°errvationsod Recovery Act(RCRA)Generators database,maintained by the USEPA,lista facilities that generate hazardous waste as part of their°armed business predates. Generators we listed as large,aunll,or conditionally mtampt Large quakily geaerafas(1QG) Generator produce at least LOCO kg'mmthoftm adatyheandoeswadeor1 0.25 0 kgimonth of acutely hawedtes wade. Small quantity pawnor;(SQCl) prdone 100-1,000k8/monthofm°.adelyheard=wade. Conditionally exempt swell qualy generators((89Qp)ere those that generate Is than 100 kg/month ofnmav alyhaardous waste. The Resents Conservation and Recovery Ac((CRA)database also lists OtherHW 6alitita that are traospatma of hazard=worts,farmer geneatorr,and 0.23 I suspect ganeratarn Non-gendatara that have beat inspected err have sent in notifications are also included. State Databases SPI State Priority Lids are the Wes equivalent of the USFPAlt NFL list 1.0 0 (see above). SQ. State CF1l.$Lids(SCL)are the mate equivalent of the U513PAti 0.5 l CERCL3 database(see above). Landfill State lists of solid wade fealties. This category also ladudw lists 0.3 sampled foe various load agencies. State list of leaking underground storage teaks(Ll3Fs)and above-gamed Tank Leak tank leaks. This category also includes LUST Trust sites where no 0.5 0 responsible party has been identified. T. State list of reankgistered underground storage tank.((Zr,)and above-pound 0.23 1 storew tanks(ASLI. • 21 • 8.1 NPL(Superfund).SPL Sites.and VCUP Sites One VCUP site was recovered during the database search,the Hudson Compressor Station. This site is located approximately one mile south of the westernmost portion of the subject property. In 1973, Panhandle Eastern Pipeline,Inc.,now Duke Energy(PEPUDE)began operations at this site. During its years of operation, releases of regulated substances including petroleum and chlorinated hydrocarbons l kely occurred. The specific data and quantities ofreleased substances we not known, however, soil and groundwater contamination was discovered. The property,now owned by HSG Wattenberg Natural Gas Gathering System, is currently under reinediation. An HS Resources,Inc. Environmental Assessment report depicts the benzeneplum extending approximately 500 feet beyond the northern boundary of the compressor station property. There is no information to suggest that contamination has impacted the subject property, located approximately one mile north Based on • available information,AGW does not believe this site poses a significant environmental threat to the subject property. 8.2 Resource Conservation Recovery Act(RCRAI Notifiers Listing There is RCRA site listed within one mile of the subject property, at the Thomas Crogan Property. Two drums containing an unidentified substance were in place directly northwest of the intersection of County Roads 18 and 49,to the south of the subject property. After receiving notification of these drums, State inspectors visited the site on April 16, 1990, to conducted sampling. One drum was determined to contain waste oil,water and a trace of gasoline,the other drum contained waste oil and water. The flashpoints of the substances were not high enough to be classified as hazardous waste. Based on this information,AGW does not believe this site poses a significant environmental threat to the subject property. 22 • 8.3 Registered Underground Storage Tanks(USTs1 One registered UST facility is documented within one Ingle of the subject property at the Hudson Booster Station,however,current information suggests that this tank is no longer in place. 8.4 Oll and Gas Production Wells The Colorado OH and Gas Conservation Commission reports sixty-nine oil/gas wells located on the property. These wells arc listed in Table VIII below. Table VIII Oil and Gas Wells Reported by COGCC Well Name Locative(Seettna/Township/ Stains Heals 32-151 141111/4 S.15,T.214,R 65 W Plugged UPPR 62 PAN AM GAS UNIT K 1 NB 114 S.15,T.2N,R.65W Producing • HARKS I-15A N61/4 S.15,T.2 N,R 65 W Producing ISR-HARKS 8-15A NB 1/4 S.15,T.2 N,R 65 W Producing CJORDIN P.WP.ICBEL UNIT B 2 NWI/4 I/4 S.14,T.2 N.R 65 W Producing URPP 53 PAN AM I 1 NE W&&11,T.2 N,R 65 W Producing UPRR 53 PAN AM G2 SB 1/4 S.11,T.2 N,R 65 W Producing HUDSON KERSEY RANCHES UC 2 NW U4 S.12,T.2N,R 65 W Producing LAZY 6-12A NW 1/4 S.12,T.2N,R 65 W Producing HARKS POOLING UNIT I SW 1/4 S.12,T.2N,R 65 W Producing PERKWS 14-12 SW 1/48.12,T.2N,A 65 W Location Hadda POOLING UNrf 2 SE 1/4 S.12,T.2 N,R.65 W Producing HARKS II-2 NW I/4 S.2,T.2N,R 65 W Producing HARKS 3 NW 1/4 S.2,T.2N,R.65 W Producing HARKS I22 NW 1/4 S.2,T.2N,R 65 W Pig HARKS 31-2 NB I/4 S.2,T.2 N,R 65 W Location HARKS I NE 1/4 S.2,T.2 N,R 65 W Producing HARKS 32-2 NE 1/4 S.2,T.2N,K 65 W Producing HARKS 43-2 SE I/4 S.2,T.2 N,R 65 W Producing • 23 • Table VIII(continued) HARKS 2 SE I/4 S.2,T.2 N,R 65 W Producing HARRIS 34-2 SE 1/4 S.2,T.2 N,R 65 W Producing WIHIESIDE 23-2 SW 1/4 S.2,T.2 N,R.65 W Producing WEHIESIDE 132 SW 1/4 S.2,T.2N,R.65 W Lam EDITH W1wESIDR 1 SW 114 8.2,T.2N,R 65 W Producing _ HARMS 21-13 NW1/4S.13,T.2N,R.65W Producing UPRR62 PAN AM UNIT O2 NW 1/4 S.13,T.2N,R65 W Producing HARKS 41-13 NE 1/413.13,T.2N,R 65 W Producing - UPRR62 PAN AM UNIT QI NE 1/48.13,T.2N,R65 W Producing HARRIS 42-13 NE 1/4 S.13,T.2 N,R 65 W Producing — ADAHeeidu UNIT/A/1 NW 1/4 S.18,T.2N,R 64W hoaxing LYIB V.COOKSEY GAS UNIT I NE 1/48.18,T.2 N,R 64 W Producing HSR-HARICE 15-I8 SE 1/48.18,T.2 N,R 64 W Producing HARKS 117 NW I/4 S.7,T.2N,R 64 W Producing • HARRIS 1-7 NW I/4 8.7,T.2 N,R 64 W Producing UPRR T3 PAN AM M I NE I/4 S.7,T.2N,R 64 W Producing - UPRC 7-10Q SE 1/48.7,T.2 N,R 64 W Producing LAZY Y 7-1671 SE 1/4 S.7,T.2N,R.64 W Location UPRR 53 PAN AM R 1 SW 1/4 8.7,T.2 N,R 64 W Producing UPRR 62 PAN AM UNIT/R/1 NW 1/4 S.17,T.2N,R.64 W Abandon Location UPRC 17-5Q NW 1/4 S.17,T.2N,R 64 W Producing UPRC 17-12Q SW 1/4 S.17,T.2N,R 64W Producing UPRC I7-13Q SW I/4 S. 17,T.2 N,R 64 W Pig NORRSC2 NWI/48.8,T.2N,R64W Producing LAZY Y 8611 NW 1/4 S.8,T.2N,R 64W Locution NORRS C I NE 1/43.8,T.2 N,R 64 W Producing LAZY Y 8-71I NE I/4 S.8,T.2 N,R.64 W Location LAZY 15-8 SE 1/4 S.8,T.2 N,R.64 W Producing ALFRED LOaOUCN I SW I/4 S.8,T.2 N,R 64 W Plugged UPRR 53 PAN AM UT/Q/1 NE I/4 S.5,T.2 N,It 64W Abandon Location UPRR 53 PAN AM UNIT Q I SE 1/4 S.5,T.2N,R 64 W Pmdhcing UPRR 62 PAN AMP NI SE 1/4 S.9,T.2N,R.64 W Producing Ili 24 • Table VIII(continued) PERKINS 34-9 SBI/4S.9,T.2N,R64W Producing NORRS D 32-4 NW 1/4 S.32,T.3 N,R 64 W Sbn1 Ia NORRIS D32-21 NW U4 S.32,T.3 KR.64W Producing NORRIS D 32-5 NW 1/4 8.32,T.3 N,R 64 W Producing NORRIS D 32-6 NW U4 S 32,T.3 N,R 64 W Producing NORRIS D 32.2 NB I/4 S.32,T.3 N,R 64 W Producing NORRIS D 32-1 NB I/4 S.32,T.3 N,R 64 W Producing NORRN D 32-17 NB 1/4 S.32,T.3 N,R 64 W Producing NORRIS D 32-7 NB U4 8.32,T.3 N,R 64 W Producing NORRIS D 32-10 SE 1/4 S.32,T.3 N,R 64 W Producing NORRN D 32-9 SE 1/4 S.32,T.314,R.64 R 64 W Producing NORRIS D 32.47 SE 1/4 S.32,T.3N,R.64 W Producing NORRIS D 32.15 8B 1/4 S.32,T.3 N,R 64 W Producing NORRIS 13-32 SW I/4 S.32,T.3 N,R 64 W Abandon Location NORRIS 23-32 SW 1/4 S.32,T.3 N,11.64 W Abandon Location • NORRIS•A•UNrr 2 SW 1/4 S.32,T.3 N,R 64W Producing NORRIS 24-32 SW 1/4 S.32,T.3 N,It 64 W Abandon Lanark* NORRIS 14-32 SW 1/4 S.32,T.3 N,11.64 W Producing These wells are discussed in Sections 4.1 and 7.0 above. In addition to the wells observed during the site reconnaissance, wells which have been plugged or abandoned, in addition to the underground network of transmission lines,are considered to pose a potential environmental threat to the natural resources of the subject property. 8.5 Unrtmpped Sites The Satisfi database search reports ten unmapped sites. These sites are not plotted bera"se Satisfi did not have adequate information about their locations. There is no information available to suggest that • 25 • these sites are within one mile of the property. It is the opinion of AGW that these sites do not pose a significant risk of contamination to the subject property. 9.0 FINDINGS AND OPINION • The site is approximately fifty-six hundred and twelve acres in size and is situated north of Interstate 76 in Weld County,Colorado. • The subject property consisted of various parcels of land possessing distinct visible characteristics. Three residences and their associated outbuildings, as well as one additional shop and four outbuildings were located within property boundaries. The homes were occupied at the time of the visit, however none of the outbuildings appeared to be currently used for any agricultural or livestock activities. Various types • of inert debris were noted on the property,in particular behind the shop approximately 0.5 miles south of Weld County Road 22 in Section 13,and in a drainage with north- south orientation located less than 0.5 roles west of County Road 49. • Improvements noted throughout the property include barbed wire fences,buried natural gas pipelines,watering holes,overhead electrical lines,oil and gas wells, unimproved roads accessing oil and gas wells, pivot sprinkler systems, water well houses, and windm�s. • The majority of the subject property was vacant land historically used for grazing and agricultural purposes. • Native grasses,brush,yucca,cacti,and scrub oak were located on the subject property. Characteristic wetland type vegetation was observed at drainages and in the vicinity of Klug Lake. • 26 • • The subject property was surrounded by vacant agricultural property, large lot residences,and vacant land on which oil and gas wells have been Stalled. • An ecological assessment ofthe subject property was performed in conjunction with the Phase I BSA,to determine the presence of threatened and endangered species on the property. No habitats were identified that are capable of supporting any species protected under the Endangered Species Act of 1973(as amended). • Historical research for the subject property revealed that the first fanning activities began on the property in the late 1800s. The structures currently located on the subject property were constructed between 1959 and 2000. Structures historically located on the property are no longer in place. • A review of public records front government agencies did not reveal any possible off- site sources of contamination in within one mile of the subject property. • 10.0 CONCLUSION We have performed a Phase I Environmental Site Assessment in general conformance with the scope- of-work and limitations of ASTM Practice S 1527-00 for the property identified as the Harkis Property,approximately fifty six hundred and twelve acres situated north of Interstate 76 to the north and east of Hudson,Colorado.Any exceptions,or deletions from this practice are described in Section 13.0 of this report. • 27 This assessment has identified several environmental conditions which should be addressed by the Client,including; • Inert debris was observed on the piup.,.ty,and snail quantities of chemical substances were stored within structures on the site. AGW recommends that all debris and chemical substances be removed from the subject property by the current tenants/owners prior to acquisition of the property. • All water and irrigation wells on the property should be properly abandoned in accordance with State of Colorado regulations. • Buildings historically present on the subject property are no longer in place. Therefore, asbestos containing building materials may be uncovered if the demolition debris was not removed from the site. • This assessment has revealed no evidence of recognized environmental conditions in connection with the property,with the exception of the following; • Sixty-nine oil/gas well locations are reported by Colorado Oil and Gas Conservation Commission for the subject property. Filly-two wells are currently opearating and were observed during the site visit. The remaining wells have been abandoned and/or plugged In addition to these well sites,twenty-eight collection/separator stations with above ground storage tanks were observed on the property. AGW believes these wells and collection/separation stations,as well as their associated network of underground transmission lines, pose a significant environmental threat to the natural resources of the subject property. 28 • 11.0 RECOMMENDATIONS • AGW recommends a limited subsurface investigation,be completed at all reported and existing locations of oil and gas wells and collection/separation stations to determine the presence or absence of significant soil and/or groundwater contamination 12.0 MUTATIONS The professional judgements expressed in this report meet the standard of care for our profession. Environmental issues(among others)not included in the scope of work for this project include radon, lead-based paint, and wetlands and endangered species evaluations. The collection and specific laboratory analyses of environmental samples were not part of the scope of this Phase I Site Assessment;therefore,no specific quantitative environmental data was generated • AGW's assessment is limited to identifying potential environmental liabilities associated with the property of concern. Not identifying hazardous or toxic materials on the property should not be interpreted as a guarantee that these materials do not exist. It is merely a statement indicating that the probability of contamination on the subject property should be minimal based on site characteristics, and the historical and current uses of the site and surrounding areas. This opinion is rendered based upon property inspection,information from interviews with knowledgeable persons regarding property history,and information provided by governmental and regulatory agencies. Information is obtained on a reasonably ascertainable basis as it pertains to costs,timeliness,and availability,and is believed to be from reliable sources;however no responsibility is assumed for its accuracy since AGW was not retained to verify publicly available information. • 29 • This Phase I ESA is valid for 180 days from its date of publication. This report should not be used after 180 days without investigation of conditions likely to affect recognized environmental conditions in connection with the property that may change materially after this Phase I ESA is completed 13.0 DEVIATIONS This Phase I Environmental Site Assessment has been completed in general accordance with ASTM Practice E1527-00. • A government official was not contacted regarding the subject property. There is no infomnation to suggest that any activities occurring on the property would have required government involvement. • 1 30 • Thank you for the opportunity to serve you on this project. If you have any questions regarding the contents of this report or should you require additional information,please do not hesitate to call. Sincerely, A. G.WASSBNAAR,INC. • PAV CA'3F8.1i( {Ltd (i A. Hammer onn ental Scientist Bet. ac, J /191 Vice President JAH/BJG/dd • • _�.---may: -� i .-- 1 I•//S 1 „:•/1 `-- "-- --=I f• lt_..,,C / 0 ('' i - i 1,71) i\.,,E: \--m-9-1,-' . ...-li , f i cs 3,- ` N,:4. m 1 i S. - im �'�' _` y 1 ((�,• ,. ��y� r % 1 r sk. , • t7- . • • A n,' I x �\, .�1, 1r ° \„ 4 -` f�� t``y 4„tg.9i .,64. -.1 ,. n i of � t'≥\�a^_•L��.C-3 1 t: - 1 ;:r-7-‘ IV (31' • <7 rcs r\ //1 e ° J . • •�l: -- -, . _13 ,—'w r� .. I ; p�. ° ' mac ` !t '°" \V mo . eJ a �..• • - � Vc r. \I, _.._ It � = M ' oOc 3 _ >�1 • _ L� , d r' ,00 �� ©Us ' _ ii-ac:1\- -fw, i tm ee/ 1 eiTec:Ge. Q Eft , . A COGCC GIS Online • •Y• • O• • .M • YIP •• • •S • • •s• • a• • • •n. • •p• • fLRedlines . . . • • . . . . . . . • • • OIL AND GAS WELLS • • • • MOM • • • Oil/Gas Wells . . • . • • • •. • C •. C . • . CITIES-TOWNS-PLACES • ❑ TOWNS-PLACES ' . • •' . . • ' . • •` • T 1 4 . ROADS AND FIRS • • • • • — Major Highways- SAN JUAN BASIN • • • • • . --• Fruitland-PC • • • . ••Q MUNICIPAL BOUNDARIES N •Y • • r ' • • . ' we r ,4 • • • • • • • N SCALE 1 :98,510 A -- *, I I I 1 1 0 I 2 3 MILES ( FIGURE 2 http://oll-gas.state.co.usAnfosys/Maps/cogoc_Pred.mwf Wednesday, February 09,2005 9:45 AM • ATTACHMENT A PHOTOGRAPHS • • • se •vs 3 '. xn �.,a nT -P--..7." -•,w H.r� 'S a t.K.rf m -rS"f U w. a� a y s:/-3!2.(-,,;(t‘2, ---:,+'>" uv .. sAT.n:" y. ..,z-Y. Y.a-ld ^+.'- }.. „ 'e. ;:ter -- r : `" .':- . r� `l:' k .� :J t J, A w T. . � c ,, r Photograph 1: Looking West Across Section 9 • �, • n fug s _ r � . '.. z �s �- s ..a?:_x�.' �: Y .7„.4.-t., . 4'1:r. "“ Photograph 2: Concrete Structure m Place at the Southern Border of Section 4 • • • r ti Er r1.yt.,44 t‘t zr < uw h1y < ,3 `5F` 5 /,ut' ,,,rs .t F.Ssr�-.xr,,',,4�� j ,. 44_ ≥^inJ' �4>Z . f.'iq a i --..--'41-: eSStk..7f a 14 • _ 4 : F- Y er- "a � "---:;,..k.-2",-, .v4444.•;....:..„-2,...!..1Y- ri. / ' ... N!•+rMF. c " ...• ".a1N�T.{. • -2-' !t ... .. 0.4 ' .. Photograph 3:Looking Across the Subject Property to the West,Overhead Electrical Lines in Place at the Northern Boundary of Section 9 • t +yny .e. • Photograph 4: One of Several Watering Holes Observed on the Site i • t F 9 6 ;Xy> i1 4 t• C' Photograph 5: One of Twenty-Eight OH and Gas Separation/Collection Stations • ... k. nt . h l -(F yn ,...,..i.,,,../:,‘ - S FRti' V h ,3....-;..7.=:.-< _ ; Na y j•k da . - ^47cr'•t Photograph 6: One of Several Windmills Located on the Subject Property • • Y�y yy.y,{y I Air I 4711 r Photograph 7:One of Many Natural Gas"Pig Launching"Stations Observed on Site • It Photograph 8: S► ap Located Approximately One-Half Mile South of County Road 22 • I ! I .i11111: eta II I I ' I 35 lti Photograph 9: No Significant Staining was Observed in the Currently Vacant Shop ( • i t • • a. r Photogaph 10:One of Many Water Well Houses on the Subsea Property • • ( 4 r Photograph 11:One of Fifty-Two Oil/Gas Wells Observed During the Site Visit • * F ` v . T a 1 µui y ,, • c•}9 rya'. Photograph 12: Debris,Inert in Nature,Observed in lite Drainage Located Approximately One Half-Mile West of County Road 49 • . - ter• N • i` wit PS Nate Photograph 13:Residence Located at 23275 County Road 22,Included in the Boundaries of the Subject Property • •-- w ct3� a.1.34.a X111. 1�`.�''WG ,! ' �.<<� � ` .�z-�..,��yy� 4$ gar .,4r n ' ``_. a zYe 7,..�;x,. a Y.L.y JiM�ti� f 3 p .�' �y K EyZf 2,tx a l-�_i ass---;-1 Photograph 14:Residence Located at 23431 County Road 22,Included in the Boundaries of the Subject Property 1 • l� ie vr.w a nos t tMM� afik'S`^ u �l lx �iZ3; si `Jf :k.;;K`"} � ,,1.��yy'`+i hd 4 4�it �+��'+ £ 'T ;yt YrrE ,,/..„c Adfi` r ' Y5 yf�5 n-S I .yw Fes"/�4xf h ,( • • .,. - *r4..�{ s 91 ^f 2 ;4'x ,•:.:, y :J.... Photograph 15:Milking Parlor,Located Directly East of the Residence at 23431 County Road 22 • a � . is r !1-lig! il , : , ,._,.. 'En`' ,•• ., -, .I _^ PC Vy±. , {� _ Photograph 1&Various Chemicals and Bovine Medications Located Within the Milking Parlor • . • r ..S:ie �?r ry r }:.c . , j:Xt irj jsbt f..,.;,,:2,4;;;.-..•...,-;/,..`;i:1---i'.' <.`V�� v PIS Vyy ,.;!t tom} 1 '3{.,axe n •>? : ` x: C. x+.. vwy �f ' -t a - • . art r��5 rp ;s1.4,7,-?4..;r f -. , . r-er.R S,r3yytr. `r : - J ' t,-• ',Y'`$ ter.L r.rz,, ,` ..„,,,-,--.:,-,,;:y. ' r Y;tyr.„r.n u.Es • t,('!" :( �-„,..;,-;:.:2....,,g.:.t t ;Q- c', r11)3' 2,1, , .- x ., ) h tb r 1� ▪ 4. j x14.4 _ �� - O1'A r, ' Photograph 17:Cistern Located in the Back Yard of 23431 County Road 22 • 1Ai, .. O. t. fi. Y t-' ''...',:t t _b zr, {3.;"ii.^ t .,w y4yT�: �..5„.- t?;h'c�+ 447.-N, v t`3. a ;�.-7µ lrX' GW �'J, a' rrYl - r. K r Photograph 18:Residence Located on the Subject Property at 25195 County Road 22 ( • . li 'Ifs ' I I4 i�� iN1d I , • ;I' : t I I j•ihr._ ..: • X l rS s�s?)-na..,4 � . - 4 y_; V t , S Photograph 19:Shop Located at 25195 County Road 22,One Drum Noted at the Southeast Comer of this Structure • X z,: st'-,1 i V / ` 1 } • • • • 1n 1 Photograph 20: Two-Inch Monitoring Well,Located in Section 12 of the Subject Property • • ATTACHMENT B THREATENED AND ENDANGERED SPECIES STUDY • • • Wildlife Specialties, L.L.C. swit srib- R "Practical,sdentificallybosed applications for wildlife and , ecological studies benefiting all clients" 4 74. Harkis Property Ecological Assessment February 2, 2005 Prepared For Mr. Brian Glade A.G.Wassenaar, Inc. 2180 South Ivanhoe Street, Suite 500 . Denver, CO 80222 Prepared By: Mr. Jelly Powell Wildlife Biologist Wildlife Specialties, LLC. PO Box 1231,Lyons,CO 80540 phone:303.710.1286 fax:303.479.9754 jerry.powelOwildlifespecial iesuc.com www.wlklldespeciallieslc.com 1.0 introduction The portion of the Harkis Property for which this Ecological Assessment was prepared coven approximately 5,600 acres in southern Weld County, Colorado, south-east of Milton Reservoir. The property is located near the intersection of Weld County Roads 49 and 22 in portions of Sections 2, 11, 12, 13, 14,and 15 of Township 2 North(TM) and Range 65 West(R65W);portions of Sections 4,5,7, 8,9, 17 and 18 of T2N and Range 64 West(R64W);and Section 32 of Township 3 North(T3N)and Range 64 West The primary objective of this Ecological Assessment is to identify habitats, characterize those habitats based on species use, and to identify habitats associated with species listed, proposed for listing, or are candidates for listing under the Endangered Species Act (BSA) of 1973 (as amended). A secondary objective is to offer suggestions on how land development at the project area can occur while incorporating wildlife resources. 2.0 Environmental Setting The project area has a gentle, rolling topography that slopes and drains to the west in R65W towards Box Elder Creek, and generally to the southeast in R64W. Elevation • varies from a low of approximately 4,800 feet in the north-western 4 of Section 32,T3N R64W to a high of approximately 4,950 feet in the south-eastern 4 of Section 9 T2N R64W. The project area is located on the Milton Reservoir and King Ranch,Colorado • U.S.Geological Survey topographic maps Historically Box Elder Creek was a perennial stream that flowed north-east to the South Platte River. Evidence suggests that currently flowing water seldom occurs in Box Elder Creek Any flow that does occur within Box Elder Creek would be impounded in King Lake,which currently appears dry. Rennant native ahortgrass prairie dominates one parcel of the project area (Section 13, T2N R65W)and is seasonally grazed by cattle. Most of the remainder of the project area that is grazed shows signs of heavy use, with the plant community dominated by species indicative of heavy grazing. The project area is located in the eco-region identified as the Great Plains-Pabuse Dry Steppe Province of the dry domain(Bailey 1995). This eco-region is characterized by a mean annual temperature of 35' to 45°F,but can reach an average high of 60°F in the southern parts of the region. Winters are cold and dry and simmers are warm to hot Precipitation varies in the Great Plains from 10 inches in the north to more than 25 inches in the south (Bailey 1995). The average precipitation in Weld County is 14.09 inches (NDIS 2005). • a us:s✓wa.Wasiteusbais pc,Myt • 3.0 Methods Field recoimaissawe was completed by Jerry Powell of Wildlife Specialties, LLC on January 25, 2005. The vegetation types were mapped on topographical maps and described by plant species presence and abundance. Using a pedestrian survey, an assessment of habitat types present, their condition, and the suitability for supporting sensitive species was evaluated. The project area was traversed latitudinally to identify basic habitat types, make observations of the species use of the habitats, and identify which species are currently using these habitats. Binoculars were used to examine areas for use by wildlife prior to disturbing those areas by walking through them Observations of habitat also were made, where possible, by driving around the property on the numerous oil and gas roads. 4.0 Vegetation Types 4.1 Sand-sage/Shortgrass Prairie Sand-sage/shortgrass prairie is common within the project area, however the quality of this habitat varies based on the degree of prior disturbance and current land use. Livestock grazing and crop production(alfalfa)has limited the use of this vegetation type to wildlife. Extensive stands of knchiaa(Kceia scapula)and Russian thistle(Sakola iberka),noxious • weeds as defined by the State of Colorado, dominate areas surrounding center-pivot irrigated alfalfa fields(Photo 1). Russian thistle is found throughout the project area,and is the dominant plant species in wine areas. Smooth biome(Bromus/minis) occurs in the remnant cLaonel of Box Eider Creek and areas where revegetation was conducted post disturbance. Two native grasses,blue grams(Chondroswn gmdle)and buffabgrass (Buchloe dactyloides), are the domiomt features of the native shortgrass prairie, with very widely scattered shrubs including snakeweed (Gutierrrda sarothrae), an indicator of disturbance. Other common species include prickly pear cactus(Opuntia polyacantha), yucca(Yucca glauca), and the forb sand-sage (Artemisia ffill olia) which dominates the view of the project area. 4.2 Riparian Habitat Raman riparian habitat occurs along Box Elder Creek. Mature plains cottonwood (Populus deltoides) trees are found in Section 2, 11, and 12 of T2N and R6SW. In Section 2 near the windmill, a few scattered Siberian elms (Ubrius pwnila) exist Regeneration of plains cottonwood is not occurring and the stands are becoming decadent.There is no shrub layer within these areas. 4.3 wetlands Though landscape features associated with wetlands (bank and bed of Box Skier(reek) does exist within the project area,no vegetation associated with wetlands was observed. C IkdoerdAll w,.r..nherbs*propeny4oc • This report, however, does not suffice for clearance of impacts to Waters of the U.S. through the U.S.Army Corp of Engineers nor is it intended to. 5.0 Wildlife A pedestrian survey and visually surveying areas from a vehicle was used to assess the suitability of the habitats within the project area for supporting sensitive species. The property currently supports a representative suite of native species typically found within the greater Central Shortgrass Prairie ecosystem At the tint of the survey, avian diversity is not representative of what would exist during the breeding season. All trees were examined for the presence of bird nests. Two nests characteristic of Swainson's hawks(Buteo anninsoni) were observed within and adjacent to tit project area(Figure 1 and Photo 2). The area around the base of all trees was examined for signs of use (bones, whitewash, etc.) as perch sites by raptors. Owl castings and bones were found randomly throughout the treed areas,and two great horned owls were observed in Section 2 T2N R65W. American kestrels (Falco sparverius), hairy woodpeckers (Picoides vlllosus), American robin (Urdu: atiaraso►tus), and nests of black-billed nmgpies (Pica pica) and Bullock's orioles (lcterus bullockii) were also observed within the trees in Sections 2, 11, and 12 of T2N R65W. A small black-tailed prairie dog (G)nomys ludovicianus)colony(37 burrow entrances)exists in the same general area(Figure 1). An estimate of the number of individuals existing at this site is not possible, since the number of burrow entrances can not be used to calculate population size(Hoogland 1995). • 5.1 Habitats and Species Presence Within the Central Shortgrass Prairie ecosystem represented within the project area three basic habitats exist; agricultural (crop production) and areas of habitat alteration, sand- sagelsbartgrass prairie, sal lowland riparian. The agricultural and areas of habitat alteration principally occur in R65W. Generally the wildlife richness and diversity of this habitat type is comprised of less desirable species that are habitat generalists. Sand- sageishortgra s prairie represented by native plant species (Section 4.1) is the donoimnt habitat type within the project area. It is found throughout the project area and supports a suite of species common to this habitat type. Lowland riparian habitats(Section 4.2) are characterized by cottonwood woodlands and am found along Box Elder Creek. Treed areas in Section 2, 11 and 12 of TiN R65W,though tect.n:rally not lowland riparian,are included in this report as lowland riparian habitat because similarities exist between these areas and lowland riparian habitat Wildlife species tideless and diversity typically is more diverse in riparian habitats. Riparian habitat within the project area during the avian heeding season would reflect this diversity;however,the timing of this survey occurred when migratory species are not present. Riparian woodlands within the project area are senescing and regeneration of the riparian comnamity is not occurring. This will lead to decreases in wildlife diversity as this continues to occur. Species either seen or physical evidence (trades, scat, diggings, etc.) of their use of the property included (in addition to previously mentioned species): cottontail rabbit (Sylvilagus asp.), black-tailed jackrabbit (Lepus clatfomicus), fox squirrel (Sciurus • e Mini' .o.Wumu.L.din p,upsty doc • niger), plains pocket gopher(Geomys bursarius),Ord's kangaroo rat(Dipodomys ordil), American badger(Taxidea taw),and coyote(Cords kunvss). In addition to the species identified, many small mammal trails, diggings, and droppings also were observed. Avian specks observed during the survey included horned larks (Brenuiphila alpestris) and rough-legged hawk (Buteo lagopus), a northern species that winters on the Great Plains. The project area currently supports a diverse conrmmity of wildlife. Diversity is not at the level of what would exist in tor-altered native sand-sage/shortgrass prairie habitat& 5.2 Species Protected,Proposed for Protection or Candidates for Protection under the Endangered Species Act The U.S. Fish and Wildlife Service August 2003 list of endangered, threatened,candidate and proposed species identifies eight vertebrate species and one plant specks that have or do occur within Weld County. Information for each specks was sunsnatized from the Colorado Breeding Bird Atlas (IGngery 1998) and Mammals of Colorado (Fitzgerald et al 1994). Table 1 identifies these species and their potential to occur within the project area Table 1. Fedenlly listed and candidate species potentially occurring in the project anew. Species Status Habitat Requirements Potential fa Occurrence Fish • Pallid sturgeon P13 Meandering,braided channels and Does not soar near the Srnphlrhynclurs albwr backwaters that provided different project area Project will not depths and flow velocities in the cause additional Sat Platte Missouri river. River water depletions aside Birdsfrom those shady allocated. Bald eagle Pr Open water bodies,prairie dog Does act coax in project area ifalaeetus kwoocephdas colonies important food saace Appropriate habitat is act during the winter. present. Whooping erase Muskeg in the summer and prairie Does net coax near the Gnu americana pods and marshes during migration. project area. Project will not No historical nesting is known to care additional south Puree have oo erred in Colorado(Kinsey River water depletions aside 1998). from those already allocated. Least tern(intaia PS Sparsely vegetated sandy,gravelly, Does not cc=near the poputatm) a silty beaches provide nest sites. project area Project MU not sterna onNlarwn Rand at the shares of irrigatim care additional South Platte reservoirs and on islands in River water depletms aside reservoirs a rivers(Kingly 1998). from those already allocated. Cahefodrer Plow PT In Wanda piping plovers nest m Does not coax near the trued,sandy beaches,prefaabyat project area Project will net islands. Known only to nest in care addit nal Sash Platte southeast Colorado(Kingery 1998). River water depktims aside from those already allocated. Mexican spotted owl FT Rocky canyons a forested Does not mar in project area mountains below 2,888 meters Appropriate habitat is not (9,300 fat)altitude. Nests in present G aaapey/A13.Wwmntohrkio papatrdm • standing snags and hollow trees. Mammals Preble's meadow jumping FP Riparian areas with lush vegetation. Does not occur In project area. Wise Appropriate habitat is not Zapar Imitation s prebki present. Black-footed ferret FE Prairie dog ties greater than 50 Does not max in project area. Matsuda nigripes acres. Appropriate habitat is not present. Plants Colorado butterfly plant FT Colorado butterfly plant is an early Does as occur in project area. Gahm neomexicana up. successional species(although Appropriate habitat is not coloradensis probably not a pioneer)adapted to present periodically disturbed,subirrigated stream channels with short vegetative°over. IS=adrift based Fr=Fake'tlwrena AC Pawl arida The project area does not offer suitable habitat for any of the nine federally listed species with potential to occur in Weld County. No designated critical habitat for any of the species identified in Table 1 exists within or near the project area. Therefore,this project will not impact any species protected under, candidates for protection, or species proposed for protection antler the BSA The black-tailed prairie dog and the mountain plover both were candidates for listing under the BSA until 12 August 2004 and 8 September 2003 (Federal Register 2003, • 2004), respectively. Both however are still considered sensitive species within grassland ecosystems. 5.2.1 Preble's Meadow Jumping Mouse Habitat for the Preble's meadow jumping mouse (Preble's IZapus hudsonius preblefj) along the Front Range of Colorado into Wyoming typically consists of a matrix of riparian vegetation and associated upland grasslands and shrubs (Fitzgerald et al. 1994; Shenk and Sivert 1999). These systems are relatively narrow and represent a shall percentage of the landscape (USFWS 2002). Riparian vegetation typically is varied with a mixed oratory comprised of willows(SaHx spp.)and cottonwoods(Popnhu app.)at an audetstory of scattered shrubs including snowberry (Sya►(phoricarpos app.). Two major habitat components appear necessary; open water and dense cover. These two habitat components are not within the project limits. Threats to Preble's and their habitat Slide alteration, degradation, loss, and fragmentation resulting from urban development, flood control, water development, agriculture, and other human land uses. Habitat destruction may impact individual Preble's directly or by destroying nest sites, food resources, and hibernation sites, by disrupting behavior,or by forming a barrier to movement(USFWS 2002). Invasive non- native and noxious weeds can aker habitat and decrease its value. Habitat is maintained over time along rivers and streams by a natural flooding regime that periodically scours riparian vegetation, reworks stream chaos's, floodplaios, and benches, and redistributes • o h.t essIA0.Waue.ual.dinpepsy.doo • sediments such that a pattern of appropriate vegetation is present along river and stream edges and throughout 800dplains(USFWS 2002). Primary habitat constituent elements (Ryon 1996; C ippinger 2002; USFWS 2002) for Preble's include: • Dense riparian vegetation consisting of grasses, forbs, and shrubs in areas along riven and streams that provide open water through the Preble's active season. • Complex plant com®nities with high species diversity. • Adjacent fbodplaios and vegetated uplands with limited tam disturbance. • Areas that provide connectivity between and within populations. • Dynamic geomorphological and hydrological processes typical of systems within the range of Preble's, ie., those processes that create and maintain river and stream channels, floodplains, and floodplain beaches, and promote patterns of vegetation favorable to Preble's. In 1999 two Preble's presence/absence surveys(Michael, personal comtimmication) were conducted in the area directly north of King Lake. No captures of Preble's occurred at that time. Viewing the area around Mug lake from the borders of the project area revealed no habitat associated with Preble's. Using binoculars the area was assessed for suitability for use by Preble's, most of the plant comnanity is comprised of kocia, Russian thistle,smooth biome,and what appeared to be leafy spurge(Euphorbia treks),a noxious weed. Small stands of heavily grazed cattails(Typha latyolia)exist north of the project area in the Box Elder Creek drainage (Photo 3). Additional surveys are not • necessary since habitat associated with Preble's does not exist within the project area. No impacts to Preble's will occur as a result of this project 53 State Species of Concern Within Colorado the status of species is tracked by the Colorado Natural Heritage Program(C[ ). The CNHP is the state's primary comprehensive biological diversity data center, gathering information and field observations to help develop statewide conservation priorities. Data available through the CNHP includes occunuces of species listed under the ESA, and the ranking of species and ecological communities according to their imperilment status This information provides guidance for where sensitive species are located in relation to projects and identifies the presence of habitats that are imperiled. For each species, an impediment ranking is assigned that identifies imperilment over its entire range (Grant) and within Colorado (S-rank). When combined, these ranks identify the imperilmem for that particular species. Several factors, such as rarity, evolutionary distinctiveness, and endemism(restrictiveness of habitat), contribute to the conservation priority of each species. Certain species are •watchiisted» meaning that specific occurrence ence data are collected and periodically analyzed to determine whether more active tracking is warranted Definitions of the state and global rank follow, only up to Cr/S3;species with greater rankings generally are not imperiled: • G/Si Critically imperiled globally/state because of rarity(5 or fewer occurrences in the world/state: or 1,000 or fewer individuals), or because some factor of its biology makes it especially vulnerable to extinction. G Sb....dAO.Wassmaartbarthis • • G/S2Imperiled globally/state because of rarity(6 to 20 occurrences,or 1,000 to 3,000 individuals),or because other factors demonstrably make it very vulnerable to extinction throughout its range. • G/S3 Vulnerable through its range or found locally in a restricted range(21 to 100 occurrences,or 3,000 to 10,000 individuals). The Colorado Division of Wildlife (CROW)has developed categories of imperilment for nongame(not hunted)species.The categories are defined as blows: • E Endangered: those species or subspecies of native wildlife whose prospects for survival or recruitment within this state are in jeopardy, as determined by the Colorado Wildlife Commission(Commission). • T TLreatened: those species or subspecies of native wildlife which, as determined by the Commission, are not in mediate jeopardy of extinction bat are vulnerable because they exist in such small numbers, are so extremely restricted in their range, or are experiencing such low recruitment or survival that they may become extinct. • SC Special Concern: those species or subspecies of native wildlife that have been removed from the state threatened or endangered list wpm the last five years;are proposed for federal listing (or are a federal luting "candidate species") and are not already state listed; have experienced, based on the best available data, a downward trend in numbers or distribution lasting at least five years that may lead to an endangered or threatened status; or are otherwise determined to be vulnerable in Colorado. • Table 2 provides the G/S ranking and CROW categories per species that occur in Weld County. Information on amphibian species occurrence and habitat association are taken fromHanutrson(1999). Table 2. Colorado cedes of concern potentially occurdcg In the project area. Species Status Habitat Requirements Potential for Ooarrens Amphibian Nathan la-pad Wog OS/S3.SC Wet meadows sad the Suitable habitat dm not exist Ramsplpieas banks and shallows d within the project area. marshes,ponds,glacial kettle ponds,better ponds,takes,reservoirs prams,sad irrigation ditches. westaa YdlovbeillyRacer OS/S3 Prairie grasslands, Suitable habitat exists within Coiaberconaricwr worms tmdldils.open riparian the project area woodlands.sad shrubby bathilh sad canals. Birds Snowy egret OS/S2 Peed fa marshes,vat Suitable habitat does not exist Egnaa Out meadow,streams,rivers within the protect area. ad shwa of shallow ponds sad memoirs. Nat is trots and tall emergent wetland vegetation. • GAraimmIA.G.Viumesaaolladdis papaty.doa • American White Pelican O3/SI Breed at islands in Suitable habitat does not exist Pekcwua etythrorhynchas reservoirs. within the project area White-faced Ibis O5/S2 Marshes,flooded areas. Suitable habitat does act exist Pkgad&s chW within the project area Black-necked Stilt 05/83 Freshwater lakes,prods, May be preset within the Himantapus mcdcanas wet meadows,and project area only when irrigated fields. feeding during migration. No nesting habitat is present within the project area l rng-tilled Curlew O5/S2 Shatgrass prairie. Though shatgrass prairie is Nwnatha amerkauas present within the project area the size and quality of the habitat preludes use try long-billed curlews. Ferruginous Hawk G4/S3,SC Vast expanses of wgazed Suitable habitat does not exist Bute regalia or lightly grazed grassland within the project area and sbrubland with varied topography.including bills,ridges,and valleys. Peregrine Eakin 04/82,SC Nat en ledges(thigh Suitable ha itat does not exist Falco peregrhuas cliffs,typically between within the project area. 4,500 and 9,W0 feet elevation. Plains Sharpdailed Grouse G4/Sl,SE Mixed tall and that Suitable habitat does net exist l)w panachua phastamellus grasses with abundant within the project area. lamest deciduous shrubs. Goarr in medium to tall • grasslands for carting and nesting in northern Weld Canny. Burrowing Owl O4/S4,ST Generally nest in rodent Suitable habitat exists within Atheae c wicularla burrows,can excavate the project area. burrows in sandy soda Mammals Fringed Myotis O4/S3 Ponderosa pine Suitable habitat does not exist lifyoris thysanodes woodlands,greasewood, within the project area. aaktrush,and salttaush woodlands. • Q lbaaagdA.0.Wawmuohutiaspopeny.doe • Big free-tailed bat GS/SI Little known of their Not likely to occur within the Nyetiaseesops ararn& natural history. Five project area. occurrences are documented in Cdarado, acre in Weld Carly. Spotted grand squirrel GS/51 Prefer sandy sails with Suitable habitat exists within Sps►arophilss spilosorna spine vegetationthe 1the projectree• lightly grazed mixed-grass !mile with Gmehgraases and silvery wormwood. Thirteen-lined ground GS/S3 Shat and mldlength Sane habitat campmate garret grasslands,less common exist within the project area: Spnaophiitu at sandy soils. however,because of the soil aidecemiiaewns type(sandy)it is not likely to roar within the project a Olive-baked pocket grousee I;5/52 Prefer sites with loamy Suitable habits dots within Peroerognr fascia:its scrod to clay rails and low the project area,brag!:the vegetative aura,often project area may be as the with substantial arrant of suntan edge of their range. bore grand. Plains pocket mouse 05/52 Highest reported capture Suitable habitat exists within rtes are from said the project area. sagebrush,margins of agriculard lords. including weedy fence rows,ditch banks and gain fields. • Silky pocket manse G3/S3 Oentln»otu that to Suitable habitat does not exist Perognathuzftawa nrdgrass prairie or within the inject area. herbaceous cover at loamy sails with small wants el bare grand Ord's kangaroo rat 05/53 Sandy soils. Occurs within the project area. Begun spotted skunk OS/52 Most common in Suitable habitat exists within Spiladek Jas agricultural areas,in the project area. rough,broken aamtry with abundant stands of husk a in riparian woodlands. Swift pm O3/53,SC Sharp=and midgrrs Suitable habitat exists within Vadpes relax prairie,nunnaue in areas the project area with relatively flat to gentlyrdUngtapogr piny. Of the 21 species identified by the CNH P and CROW as sensitive species, seven are expected to occur within the project area. Of these seven species, two are classed by the CROW as being of special concern (SC — swift fox) or state threatened (ST — burrowing owl). impacts to the remaining five species are expected to be negligible and will not impact the species viability. • C Ibash alA6.Wannsanbarkias popatydoc 5.3.1 Swift fox In 1995 the U.S.Fish and Wildlife Service identified the swift fox as a species warranting protection under the BSA(USFWS 1995). Since that time considerable efforts have been made to identify the range, status, and habitat requirements of the swift fox. These efforts resulted in identifying that the swift fox had a greater distribution than previously (mown and that its habitat requirements were more diverse than originally thought. Because of this information, on 8 January 2001 the USFWS removed the swift fox as a candidate for listing under the ESA. Habitat throughout the project area is suitable for use by swift fox. Swift fox create dens in almost any type of shortgrass pia habitats;the dens are used throughout the life of the fox. Because of the possibility of swift fox existing within the project area, it is recommended that prior to earth disturbing activities additional surveys to identify the presence of swift fox dens are completed. 5.3.2 Burrowing owl The burrowing owl, as its name implies,nests in burrows made by all mammals and is frequently observed in prairie dog colonies. In Colorado, burrowing owls use the burrows of prairie dogs and other ground squint! species (ICingery 1998). Burrowing owls favor flat early successional grasslands with very short grass or bare soil(Dobkin 1994,Kaufman 1996)and often nest colonially(Ehrlich et al. 1988,ICmgery 1998). The most important habitat characteristic is low or scattered vegetation that provides for predator detection. When vegetation is greater than ankle high,burrowing owls abandon • their nest borrows(MacCracken et at 1985,Fhnnpton and Lutz 1993). Greater than 70% of all recorded observations by atlasers during the Colorado Breeding Bird Atlas were in shortgrass prairie in eastern Colorado(Kingexy 1998). The breeding phenology of burrowing owls in Colorado is variable. The first individuals arrive in late March or early Aprr1 Egg dates(nests with eggs)ranged from 29 March to 1 July; fledged young have been documented as early as 8 May in Colorado (Kingery 1998). No human encroachment or disturbance within 75 yards of an active burrowing owl nest is allowed from 1 April through 31 July (Craig 2001). Since burrowing owls may be present at burrows up to a month before egg laying and several months after young have fledged, any action that destroys burrows may not occur between 1 March and 31 October(Craig 2001). Any ground disturbing activities conducted between 1 March and 31 October nmst be cleared via surveys for burrowing owls. Surveys must be conducted by a wildlife biologist familiar with Colorado Division of Wildlife survey guidelines. Surveys for burrowing owls must be conducted for areas 225 feet beyond disturbance Bmnts. If burrowing owls are found, the owls must be carefully monitored to determine which holes they are marg. Once all the burrowing owl holes are located and marked, prairie dog holes greater than 225 feet away can be poisoned or disturbed. G`h.si.edAO.Was.ma is popaty doc 5.3.3 Migratory Bird Treaty Act In 1918 Congress passed the Migratory Bad Treaty Act(MBTA)(16 U.S.C.i5 703-711) to protect birds from over harvest The MBTA established a Federal prohibition,unless permitted by regulations, to "pursue, hunt, take..., for the protection of migratory birds...or any part, nest, or egg of such bird." The Act designates three groups of migratory bads: game bads; insectivorous bids; and other bongame' birds. Typically, only active nests(nests with eggs or young)are protected,inactive nests typically ere not (except for those species protected under the BSA). Tolerance to disturbance by nesting birds varies between and within species. Reactions to disturbance can also vary, from subtle body changes undetectable to human observers to aggressive defense behavior. Some birds may fly away from the nest,appearing to be undisturbed, this leaves the chicks vulnerable to over beating, clog, or starvation. If a nest is abandoned as a result of bemoan disturbance, failure of the nest can be viewed as a violation of the MBTA. Within the project area disturbance of the two Swainson's hawk nests, if active, can not occur. To protect against take of a nest,buffer wises and seasonal restrictions exist If implemented,these actions should assure that the majority of individuals will continue to occupy the area. Buffer zones can have some flexibility depending on terrain and vegetation(e.g. trees screening the view). The buffer zone for Swainson's hawk is no surface occupancy (beyond historical occurrence) within a S4 mile radius of the nest site (Craig 2001). Human encroachment within 3 mile of the nest site is restricted seasonally • between 1 April and 15 July. If disturbance is established prior to nesting by birds, and birds select to nest within the area influenced by disturbance, then disturbance can continue. By observing the aforementioned aunty recommendations for burrowing owls and buffer zones in concert with seasonal restrictions for Swainson's hawks, incidental take (and associated violation)can be avoided. 6.0 Conclusion The property does not have habitat capable of supporting species listed, proposed for listing, or are candidates for listing under the ESA. The majority of the project area has been heavily grazed. The native sand-sage/s ortgrass prairie exists in small pockets; most of the project area is infested with non-native and native weedy plant species. Prior to development of the property, additional surveys may be necessary for burrowing owls, swift fox dens,and to detamine Swainson's hawk nest status. • C kaaa dke.wauawributiaapropasydoc • 7.0 Photographs 01 /25/2005 • Photo 1: This photo is taken near iaug Lake bold west. 'The vegetation in the foreground of the pinto is comprised of kochia and Russian thistle. • e Amara/A.0 propaty.doe • -20 ao c .y vY4�kf r +,ft., ` .., a • s f y f - J 1 Lll . 1 1 .1)0 �i f `,-1 Iv; 01 /25/2005 Photo 2: Swamson's hawk nest(southern most nest identified in Figure 1). • • C ItaitesdAO.1Vusanastuutins popagaoc • •yez vier be r 2. s , 4 i13, • 01 /25/2005 - • • Photo 3: The pinto is kicking east from the project area into the' he southern end of Krug Lake. The area in yellow is heavily grazed cattails No Cabaret for sensitive species exists in this area. cob.b.thco.wesznanamaisapcpaiy.mo • 8.0 Figures i J. . n ,� � `-�> /•a�� J\ .,-, J � mss. • p ,,, ..!1-.L....!: .Aiii,\ .,p, tx . .\ 5_3 t,5 . r44 \j ' ' t "-1•00... = d r_eft,k • 0 • O • p r p }� �r�r o v• c r- n • r miromlwainamlansisowflgtemarrievrismoold Figure 1: The areas in the dashed lines represent habitat in which great horned owls and other avian species occur. The oval represents the area in which the black-tailed prairie dog colony is lnrerrt Octagons represent where the 1999 Preble's surveys were conducted Crosses represent the location of the Swainson's hawk nests. The large circles show where center pivot irrigation occurs. No other unique wildlife habitats or species where detected in the remainder of the project area. ( . Q Poaiao./Af.W.sa...b.hea popegdoe • References Bailey,IL G. 1995. Description of the=regions of the United States.2d ed.Rev. and expanded(1'c ed. 1980).Misc.PubL No. 1391 (rev.),Washington Ctippinger, N. W. 2002. Biogeography, community ecology, a»d habitat of Preble's meadow jumping mouse (Zapus hudsonius prebia) in Colorado. Unpublished PhD. dissertation, University of Colorado, Boulder. In: Meaney et al 2003. Abundance, survival, and hibernation of Preble's meadow jumping nice (7apus hudsontus preblei)in Boulder County,Colorado. Colorado Natural Diversity Information Source(NDIS). bttp://ndis.nrelcolostate.edo%nservatancnty.asp7cnty-405 Craig, G. R. 2001. Recommended but zones and seasonal restrictions for Colorado raptors. Colorado Division of Wildlife. Dobkin, D.S. 1994. Conservation and management of neotropical migrant landbirds in the Northern Rockies and Croat Plains. University of Idaho Press, Moscow, Idaho. 221 pps. Ehrlich,P.R.,IXS.Dobkin and D.Wheye. 1988. The birders handboolc a field guide to • the natural history of North American birds. Simon and Schuster Inc. 785 pages. Federal Register. 2003. Department of the Interior, Fish and Wildlife Service. 50 CFR Part 17. Endangered and Threatened Wildlife and Plants; Withdrawal of the Proposed Rule to List the Mountain Plover as Threatened. September 9. Volume 68,Number 174,pp.53083-53101. Federal Register. 2004. Department of the Interior, Fish and Wildlife Service. 50 CFR Part 17. Endangered and Threatened Wildlife and Plants; Finding for the Resubmitted Petition To List the Black-Tailed Prairie Dog as Threatened. August 18. Volume 69,Number 159,pp.51217-51226. Fitzgerald, L P., Meaney C. A., and D. M. Armstrong. 1994. Mammals of Colorado. Published by the Denver Museum of Natural History. Hammerson, G.A. 1999. Amphibians and reptiles in Colorado. 2i°Edition. University Press of Colorado and Colorado Division of Wildlife. 484 pages. Hoogland,IL 1995. The black-tailed prairie dog—Social life of a burrowing mammal The University of C icago Press. 557 pages. Engery, H.E. 1998. Colorado Breeding Bird Atlas. IL E. ICiugery, ed. Published by Colorado Bird Atlas Partnership and Colorado Division of Wildlife. 111 C`MmWAG.Wain atsp,petyt • ICaufman, K 1996. Lives of North American birds. Sponsored by the Roger Tory Peterson Institute. Houghton Mifflin Company, Boston, Massachusetts. 675 pages. MacCracken, I.G., D. W. Uresk, and R. M. Hansen. 1985. Vegetation and soils of burrowing owl nest sites in Conata Basin,South Dakota. Condor 87:152-154. Michael, A. 2005. Personal communication between Alison Michael, U.S. Fish and Wildlife Service,and Jerry Powell,Wildlife Specialties,LLC.January 2005. Plumpton,D. L and R.S.Lutz. 1993. Prey selection and food habits of burrowing owls in Colorado. Great Basin Nat.53:299-304. Ryon, T.R. 1996. Evaluation of historical capture sites of the Preble's meadow jumping mouse in Colorado. Unpublished M.S.B.S. thesis, University of Colorado, Denver.In:Meaoey et aL 2003. Abundance, survival,and hibernation of Preble's meadow jumping mice(Zapus hwdronius preblef)in Boulder County,Colorado. Shenk,T.M. and M. lvf. Sivert. 1999. Movement patterns of Preble's meadow jumping mouse (Zapus hudsonius preblei) as they vary across tint and space. Unpublished report of the Colorado Division of Wildlife. 27 pp.+figures. U.S. Fish and Wildlife Service. 1995. Endangered and dneateted wildlife and plants; 12- • month finding for a petition to list the swift fox as endangered. Pages 31663 - 31666 in Federal Register Volume 60,Number 116,June 16, 1995. U.S. Fish and Wildlife Sca.iw 2001. Endangered and threatened wildlife and plants; annual notice of fmdngs on recycled petitions. Pages 1295 - 1300 in Federal Register Volume 66,Number 5,January 8,2001. U.S. Fish and Wildlife Service. 2002. Endangered and threatened wildlife and plants; designation of critical habitat for the Preble's meadow jumping mouse (Zapus hudsonius prebldt);Proposed Rule. • Q hsameM.O.Wasmwpyspcpelydoc • ATTACHMENT C PUBLIC RECORDS RESEARCH • • Environmental Database Search , Subject Property Client Information Hats Property A.O.Wassenaar,Inc 2180 S Ivanhoe St.Suite 6 Hudson,CO Denver.CO 80222 Latitude: 40.158700 Attention: Julie Hammer Longitude: -101800500 Reference: E05134.E1 1i/ iLJ1 • 1 . \-.. .i ....-- .--- • f I - ,( i // .../ ; `. y, l� ft_ I J i � ( . r Ir gli ► \ 1 I A. s i j <.�` / 1 _ _ i , Qa La - _� : a 71-- \ • .� .0 _____ hits's'. - • NPL,SPL,C0�RRACT SL',CE RC LIS.SCL T]nk,GF RAP Spiel, L en.th J T:ch Le.Ik Coo,ia'_!.0:: .fFN Seeds Resins 1es tags 11.1 ea satisf . arca BAN Elatitia ROAM MISR NM asks Soros Solna ( Witt Inc•72020?Mn•raw.ngLcpn•Moon 16200501.1Rhe511:M Pagel or It Executive Summary - Mapped Sites �� =.y � •'vaRlr:r: . MAP orMM1 �" • SITES FOUND LiU ,, El EU EMU - �r=., T 6 nnenrmnnnnnnn l N„1 ,a ,mile eeeeeeeeeeeen Men. enneeeeeeeeen neeee OEM OEM nn •Mlelaaca w menli ea MW iM.Y ale aw aaaly nbl K loam balsa. ti AaaM,a Naided poet"awed r e INK Moe MIN Mab.mien Ml Sitar Noins r4 Wale won MiiWwt.kINalmols Mk Y Mme,,••••SO a bat Pat my M ear a Now s NM eaaa mat a Mac npesIll_p M Ws It tea"VIM Neer la USfi, a M IN ale area drib Is NS*OM SI bus is afarWMa 21 peso an rag a aMM YNMe a rat ad*Sam abase WISH pleb.Mawa,Mr-ela Y Mr all bas M as W Ma..,mg flair M Gale Swim M—M Sol I N aagaa >)Mae an ma*sped bad a Me'Mrs AMaapbaea aw M MMialt name arpamane i. Mg pry by alfine b eel as anal a W ra Aaoally,n disbud'MOS min e set mesa* meow ada Mao ea w yeas MM nowt.It � tilt amaegpea eMdi M Mir aweMa N A Ww. VolodfirMg Wes RCM blow MN PMlea a MtWpAI MWaaya,Ip aeCOINACTR 7Mee IaearramMeleaMmner.aaapaeleea amebae ameromaa Iee M sera AIMfySMW M Y~G wad w'Wags fet es ladicall••MaayOwe W 4 led let RCM Ness CS iWItwiap odIriAM.lw Mwey 'WaatlM • MR won Seta been ha Ma repined Mped Se Al,NMpMa Slain I•beam Rs lgeaaf as bail apes assess*Imam b.Mt sib an SSW nines.M MMMa,N iodine p••••M MA hr onmpleull •Tale Loa aMlabrawl lit aft M Tat leg RSobet aeaMr4aale ere bins..sleet SI cans.M UM;ink lit%ge.a aaaala eea Qaael Rc f 7204004413 p aaa.laalemm p*opal 113300606 a 1/22105 sill P5512 of It Unmapped Sites i P,{ :Y SINS FOUND 1.C.H �¢�i�j�®am _n :P'1_„fir i i•yii't'. =EN l�� etlu C etAmitam®agie ai .'" .'.�..7r";•�'�-"T3, �:rita^-=�T'•i"ra, ,^�i7n'ri7 I a S ta.�. . Litr; ��e..a®®��® Then eNe aids ass he sped n . 4Neoe.r—. •elladereate addressee Meteetmarl.Pass aauernr.braid Wien wee_ttMee•rehy yWanM nee r Odd eels%lin reels em Wren lame.please cad adar71a,71sN73M ben tripped. Wrapped hung.re nps.Sd•.re chum ra**rearm wlgt be ne..Md deNy M sewn.1. ea visit scant assail,.llenee,e40ee Sere M erne emir 0000 M bedew arsado/le nearby led Wretee0al cecrn.rem le n•sprementrreAn Mender M eNn•t latest den • 07004,toad Ina.This riper weer red maids ASTIR NUT Metormed-__.t i- eeena n■ Thee One eke eeeewet Lessle W thrills►Mare We that the maned WMMs rang event be pasted.tar ee We net Ilewnrild M redo or lorded rpanY.y p.de s.By royMa le red repot W nodes egress M ees at mated MMt and le Scat t40Mt ode debar Wray dairies.lierwer,lws The body etre v.g.a ma iii...M eiwed MM odee seam iepddc ewMr. OEIAY!Pct tlos.NAPPED WU ram •usmorans DATASAIS SOURCES Uri lm•7204OD.M70•w.r.sodslicom•Rprt fl300scs•ram 11:M ►a0e 34012 • Detailed Findings - Mapped Sites Sulam Cim aa•rsta6ca . i'MaP4► ... . ::.AWC�ERCtIBEi/ M-saaoi OY,COVCL'VCUP;. /CL Said la 00033.000767 COME Mt 711 Aidodon R 700 COPHE Coolest VVaisc App•Caio.Dab: 70d1Np1 Aogn aeeo Typo VOLUNTARY CLEANUP Oriel= APPROVAL Rem Congdon Our. 17-APR414 OrNauss: MIXED A000pr 3 IWlOIIYOG/TERSTAIION _ .:o' ,,, •NI MKLDCR4?,NYOso1.co,••64r' - ' • 'twist& • . . 'NiyeMidj•Iit.R'aisY17TANKa. TA1K • said a 00001-0001000 Faaiy Y! 1734 Omer 3147-K N ENERGY INC,700 F ST,PIIILLIPSBURG,Ks,0700$ Tank Dsa No Tarn Reported TIIC6fASCR•GAN/RoPENTY _ XIY • anwanOpUNI,Y ROADas,:MIDOON,'CO.WMS • -+ •:-: . 495i lg 064j •41. dOPrTOilio hd4P!OM4ODTSSW NOSE C., MINIM• SaidR 000x3.00610• RCRA IINdWK1: CODO.770/gN OtsCarponer Non•Nc•6tputpdai c4 operatic lol•Im•ptapscau•wIM RCRISAai* 16-MR-1P00-NanNolNv RuspecN-acprainp Wtutp.Paaau•aM RCRIS AcOI{tr 1aAPR-1.00-Not•Gelwato RCRIS V6saio r New SRN Ire•720-200447$•war.arldrom•Repo1/S630.Os•tram 114• Pan 4d 12 • Unmapped Sites , ADpRSSi NOTREPDRIE0.CITY501 RI/ORTSD.CO . . , NtMasrFiNs=gptgn76I000HLernlie eta SAM D: 000250002153 Soren Sane: CO 011 ese St Sava Osaalplen RNs be merest gin elect money a COPHE pert*Ii the Int as btol..fl «Repel tee nee ken teed bMn soaend.The lot Is not being Nvdab0.From COPHE-Conte Depwbwdof Puente a Dote nnnt OpenbCetO0w: SEVERN tAN40nU,IHC/I Cant Plea: 3034424303 T•wWip Rings Saabs Se Type LANDFILL AOOREiS,NO►RE1CRJEO�CRY NOT RFr041'FOi CO . .• ;.:Ylw4prfTTSRe:;Saecs301CO.ON•4Y10Rer'.: SAM R 0000040021Sa Saes WINK CO Old WNb Sea Some Deseret 'INS ba..,.....ãSnmetemany or COPHE paeans)5Sn Ines ab ewe lending er HsgS deem wws lett or suspecledbWve aaoweed.The Mb not Wing updMsd.Fran COPHE-Colorado Dent en% Putt Het&En*ainen TswweRamo 244 en 21 • Sent Us T1q: OTHER Fl Man LIOA05. Cement OIL DISPOSAL SITE.HAZARD TYPE OTHER. IMPACT•.OW. ,Nb Clflsprbd._CO . .. " . UnrnaTipcd . WSW IFIMSi a iu..341COcON?tlEVORIF:' "Sag lee Et 000344000345 Same Hans CO Rspad et Iles Ion Dereelpelero •Ris el tee seed w.N SaesInthem bee pemeled eta MIS rend mann own meet Seel deem for new Mire every Isdays. Flow COPHE-tads Ospr*antetF he Het lRe•beinwd Percy twa ID: IMSRE34007 SW TYPE REMEOIATION Om Deis 7{525 Oats Deb: Clem&bunt notrseaee& AOORWl4T RSPORTED.RUP�0!l:W. _ l• tappc, IS 00NFdoortsi Sot New COONet St Sava Owalpga.: Me bet reposet the to to entry of COME personnel In Me 154'1 MWwe Mae 44lt dinPe em to Mewpatl tote mat T W bw I 001 04110 tile Fran COPSE-Cate Depeterd at Puttee S Ettore • Salle Inc•720-2004473•ww..Ndstan,•Ripen£30040•m2ms IlKs Paps Batt • Unmapped Sites (Cont.) (Cara) Urm,ppod N01po: LANDFILL FX Mak REFUSE. Mu Nom* 1.10 Commonly DUMP N DITCH GOOD POSSIONJTY POI.WIL IMPACT:GW. NNW,tall . - Unmapped N.ASrw RspoiYA.Nuawe.CO . : . .. Wogea FE$M-Scow 2SiCOOki Wawa Lain SAM ID: 000250000374 Soma Names WW Count/COOld Lot Sours Doealoaoa TNa W MenMts Moan a wNorbd Ina or igd Xs The Winn:* Wing updated.Ran Wild Count/Deportment ofPunic Haab and ErMcmwk•Eatonwdil Hain CMS& Tam*RnW NY,E2HE Wl,NE/WOOL Seolat IPEmAtcoACOO,!SIOctl 1O1[ '.r'.K' Al10RE$O NDT REDORTED/CRY 1qi RIFOJITED.CO . . • - '" • • :"':. ... wO140IS,aa.=BaioowCocul n.lit:. USN Sold 10 000251002145 Saga Nuns CO Old Ws*SON Soma Daamlplau INSWrepNw4a al.wWuw memory atCDPHE pmwaWb We 1000'0 44I0*Wm loadlr^0 a WWI dumpnp wee known or wopNdW b ban oataled.TAa Wloot b* oMMII Fran COME•Colorado Doprbwdd PittlisSi S en ao,wsw OpenblXTwnd0aw: snort/ /aMPERIAL COAL DENVER Toa0ol*Rape 101 R55 824 Balay SIN 1ypa RIPOUNDLIENT FE Ma des MOIAOS. Wm Maw): 1-10 Commonly SS WIG.HAZARDTYPE CHEMICAL,IMPACT:OW 'FHLCiS,WlIDbYT,PYA*gig LAgt Wirer ,; . . XL. ,:...•..._,.: d P010X3$ylOFE11ESSMq,00,J15M ;...' �: Unmapped - ..... .. . . . > . - 8ra1od 001.1 oa0rt Dime 45/ _. tad la 00013.0005503 ... - . . . r.. . ILO* RCRA Hondo ID: C00000096197 15107 EPA Fluty ID: Caen D.1 FISHER PO SOX 2120, CASPER.Wy 02002 3W237Aa1 Omen MUMS PETROLEUM CO OORRACT Evert IS-AUG-UM-Sold Wale Mpk the CORRACT Event ISMNi10a1-RFA COMPLETE CORRACT Emit 01.00T-1551•RN IMPOSITION CORRACT Event OFOCT•IN1-NOTICE OF COHTAMINAUON CORRACT Event OPOCT-1901-CA PRIOWTVATION.LOWCA PRIORITY CORRACT Amy ENTIRE FACILITY RCRIS Achy: 1 SAU0-1550-Nat a Gnwabr WWd Inc 0 720,2055573 0 wrw.NOd.00m a Ripnf700Tpa•i/f7Ab 11:55 Pigs Sof12 Unmapped Sites (Cont.) RCVS Vbbame Na PaotPECTwuEy - . .ADDRESS NOTIIEPORTED,1ND50k CO - ' 'NAIYaH MN-IMON E/COCM{alME1+: USN S.1d IR 030250002192 San Name CO OM Wads SW Sale Darlfpdac 'TM 6t repaints Sn odiws memory d COPHE personnel S the 11071 as b wane W d*ip a NHS dumping woe Mare a wapitis)Is Mw .arms/.The WHAM being ypdWE.From COPHE-Cobn.S Dp lmont PWIcsmi&Environment Dpa lodOANWOErr. /MELD eta Mb Typr. WIDFSJ. Fe Marbt REFUSE Ma Mom* I 10 Conn APPEARS TO OE VERY HEM GROUND PATER. IMPACT:GW. AODnu MOTAFPO1ITED:.MJDSOIIr .' 'z.* :r>�j :`is' Unmapped SW W: 0003S00021W Sow Name CO Old Wale Sin toga D.wgdpc TMWtapwss's M 0olse1ie memory NOME pr.a. 1b M 15W, • m bWww MM US mph)ras baepaaspmed baw swam,The MS not bac pda.t From COPHE-Cabals Departmental P LkSaRb&Emta..rd OPoat.dnnrlc6sc TIRE MOUNTAIN,INC!JMNSON TOOL.INC/ 86 Comoct JARRMD JAMISON Taedpp Rags UN NSW SES2 Sallow SW Type TIRES H IA.IrYC FLY Atilt NO. BIOMEDICAL NO.ASBESTOS NO. SW(a NE ItISAC Os Ca ISMS S obi UROUNONSTEIt YES.METHANE NO.LINER NO. LEALNNTE COLLECTgpt NO.AMENDER YES. MERMAN RECOVERY:NO. Cammwas: MEMO ONLY:NO.OPEN BERMS NO.WASTE IMPOUNDMENT:NO. 'MACHINE:NO.SLUDGE KIND:NO. TIRE PILES TES. WlWOQ.'t�INDPILI... ..�_, , z.:'..: r:c.•..': .« . _.. ,. r= - Uranappod AOORBS NOfRF/ORRED;'CrtYJIDTl1g DltjlD,00:.--,:;��' .:.. ...,_ . V^ ..' .. ;• .`:.:, . `•:tlMb.aPfEr-'Ea4aissrCO.01o'LinoMi`' 5.65ID: 0002SNNf1IS Sans Name CO OM MHOS SAN ` tacos Drat en: gM/pt npn.mb fa WINS*ramey dCOME Amami 11W, abraders YNHg a Bpa cragwa.burs a suspected b bra small.Ths lit Is nalb.lg SUN.Far CONE•Cando DspaS.mtd Pntls Hat&EwYanwd Sib Type LANDFILL H Mapmt REFUSE. Pap S.1d Iret 7204005473 s suss Scan s RportdS100SM s 1a142/0S 1114 • • Unmapped Sites (Cont.) ru • Unmapped Cmnwib: RECIEVES DOMESTIC SCUD WASTE. HAZARD TYPE:CHEMICAL IMPACT: CAM Sal Inc*720.1004473•rww..ewa.com•Ripon waoo*o5.1mm5time Pap 50412 Database Sources • ;of rHici;I!L •iara.:'i1 tax,*ThiNabtai ' law�.sais itli' -mwyor�u.:� 00�rr!M!44h`!!h+rr.�'�: '*•:.'�::� tia*vM,snpo}hd to onion.•sic*ofisi* »iW [M.I Mdft•VO.,.:. EPA Suparh.rd Papniw•Na-_MAa,Sews oppaateoa4{isoMOPA*W 4..-lOrL.had r..: sits e4h PAY CeirfrobwrisElmenfisnisitespors.coripOis.gaii.a uthertlammun . . M•Y.tc�«ds3. keep.Nara 'us EPA-Wad Mani Emwmes sceed FAOagr.$04.44 Pmt. ' " Arptcy re+.� 'hlp�Prrr opa Aorta*Mot 11Aii04 Upwtad h7Apwq. MOMdI ia44 Walnut WOW" AOwol'Carina Non Last R••••••• 1110ipt NPL San 1ldiamat WM.AM.rgl.htrrwr RduaMaY/Wi!d..eig00Pl.4aii0.4 . .• .. .Includes le balms praipadtl.11O0eratl.Wtss•prni l.dFAS Dwyer. 0aCNM Mh. WOor..t dweaW'ba4a..QSflSi MINN.ibis.aspraMpaua.-Forir.ra . .• iidr..Vo..pima wRih.•ow latild iia.4+:e -Annoy Nam. US EPA.Wad Moss 6ahar.aY PaVYoian Pawl;11.06.110•Pillae* PearyWWMt .ww•aPa•por•••0010thlikindahlat AND" • lap•MawwAdq..Moo.�mp " • Apary Updo.t 06111104 Wed MApagr. Monk SS oast WOW Awing Coact Nano Wlb.narad: HAWN • 4Pt. u..tsi suti'T'w.r.n s alntpep* esi .Hoiva.iry.rar ` ; . ieir aiw:anb PIO".a:.oarpeil a�:it!1.".ri;:EldSM«ilwnnt*T ll ..;• ...:..:.: .. ... ... iiigllwn!�at !:.^! NR06:IOd.'glihalsl R.d6fiwDiinidfl�'i0q.rid . Pta.1 -1 ih.tacwnyi p.pIonSa.W4. 11*.41107iUKAnii.s044501.8`.' :". ,�,s; •. ••••1411••iMwaiMfaspir+aa:WNdNIan Oiipw1}M,•aegi�i,Yiirlyo;Ml ':.�4.; • ,- Lift:f2;_. SuaiPzig rkitin 6sai.}-,p-i g iic np�o;ti p;fmgai�Fiyly.'P+tiddstGweta.i.u.p'hiK..;::;'; ,'f; • . • NbO:.0 RI kiss..h.-"- UadG�r.r.. • 11, be ma wine nn..i•FOi t �:.:, ;. •:�f:, . COGHes let dWcfr r Ocp.4.s.linotpttei'1w1.01.* wygeacheU eland jiapod:;.: . `.: • .. 'Pnpalfr-090.4 rarallan 4 014 6190 9 110 9Plaas_bavn 1*:-S.t' • ;.;: • a rgllrnt COPHE!CO m!0(Pub"rM IE..h..,raM:'HoarCarp NalpMls{WMta Uppi• '.. M1 .Apawy VN4i4a;. .MMpw.uM.pj!n+PP:at 61b'+Ilaww.od07.aEancwlMw.- p4i�.rp _`.`� : .: -. —Wdwt 01111,W wpm MAw.r• N.aatrAadd. tiMMO6dYnt Winn PawlCoea Non LatOap.oet 11A7pt T*; . IMO S.;05.10141 Oae(a4CO1p1/ycTj as 1praAmilgtlwpdPaYyna�yyq•::;•.: . ......Ioa.P►..`.,;-U-rd!rq.1.4a 4,05,4t3110-4,5,!, 4(0".AJi!0". !Siai A ~_; :,": .- Malaria p• ieli•k OiwaMyrtip(cO!l MCT.S.9p111tfIS11 Ssktsi[S$.,ERAti t":` •-• *utwaS.ryan+m!'N.avuy do�511+ief.7yaYin'IlkiiAr":. .:'' pia* us.E►A.un4wMar.y�to w rr►nrctAi.w:aaatadwtr. .: . . .v.-_:_.• • . AOesgM a0e wwr:yaO Jiro . Mira UMoat t1V14WAd SSW WAS .► I* . tad at /L/W1 Peng Cott! t iSM t.NNop.slat 1W15104 '$0 E.rwarli� tlrEo....�P,q�r.l�rZI,i( s15 ( q .. io 4s.- r,- a.gWd.aI q .s,nsrmrwan&1W *MS$ (9,i .. -. .stelaarive+ryYy0p�P.1iQ 4?NOoiaaiq..pMNM+..O.aa i n l_r H.o.roy i •- :A5..yrNtmr Ai1O'7 Ur" t .Eat L++r. N '�Cl ad!d!4 Nim• . ;•.: A�gpjppa0a:•[wvr. aswMWOYAtE4iL.r:•, . �:'::-.i•. �'` ::;.• ., ,,.,.;- :':.. Ann upset 1 I upsetrovsW �M Sold Obtains! WI W1 Ao.irCott Tap too. the ta0r.atat 1t16Aa Wall Inc a 720.100•Wn.wortual wnt.Repot MOWS•17y7As 1114 Pao tern • Database Sources (Cont.) i cndaa Sena w)1aRC JS;nrooppausoksE ,ray: IN Swoosh Cwv sione.i►n�y _ . Wane Noa tplati Elms)- -ewpMrf_aoo ed sanioa% elleadd Sri : . rn•rdWE►Aran?ntuunSulmslwi!!dnwl WSW*PIMis WWI*SINS b . ' M NIL,1Y nnawd t a t: WCN6elWead on thINS Rost"msLt#lSoii Pfwlsd9tRAP) dM Thaa•aa,, 11,000 QERC&J$S abiapa.• _ ApawNann: US EPMOi*d Sdibs''Ena�pr•adilWorodonNSW.ASSISI AWN"; tonal SOS 14010W�pdaat I�1tA�Od Oo+A1PaN'V<•'`-Iwak.$,a4altn . .. . . - Sarat wow WaaO W Wei, . Aram Watt Mt None lydp•qudn•d: *Wu • >W!' 'itpia:'daiCOWI,VOW NNW hen BaN Cadet*ON bVolm•do..i(ow•ip,radaWd.•••iniuntins Own.*LS ty.e.i doss klonnNew San napes"Os"Ian-Wed Vokiney.ceps • • Plan POMP)Is"aNpappip•L7aNebo Winds soma awdws hndwaaa N&SAWS • • 008•1119•••11(NO)ITS Ih•aYaand MW wana)aead:Ti•aWa'a%NoaydWdoia'r•IMO' '.. . cnehlinn*Made SiSipkppaidas MIS pplpay-Omen!In iparq•tor.Mdnue enaw11al0dt - • • Agency Nina. COP11E-cao•1paons :soil S Ema ienitlienaar W VWM Oisi •lipa( ow ApangMWiia w N+wsdpni.141•eo. App Apad)asst ON790d Noss bpower Na NA'S" Sail lltdalat WSI Annoy°Mat Me Wale Lad NS wfv "1,11.1- 1or*(21lCo.oip,-apiriNidtliI.64 #**Ili ,:s .a. Pnf'ndiGi:i�.-dbon�r;pol.}•,' t:'r.,, So*esirdleer•enWiyi cen,71!l;�p•W ap iii:rebni'hi iniiq; :s<: ;;, not opic0 WdaiaMint Aaa•4.Sed.J...4pnic($app**iodaor;N' adeJNBldinY: ` —^pe:lien.“iaA;+ -Eii•,;10tir«c.oi•oi. r ..::n_::, _ z.Mpaal Cow OgstanBi .. . 4a41•L CunW_CCEON I:aa•• • - _ - • A.' %%aW.CxsWOwLNWra "`� oa•!dr..CO QN F3.pr: _ • • i • -::, • .. dt:c6911WYsrilar;; :: [. .— • .ApaaY.Nrna:tIS EPA'W Pena WIN•d: 0110180 WSW by Poser Nowt . .. : SaaIONaYat a/Wm ArilCaart Vain LadR•prat =GIN laadM. SNaa:ntcowJ! !p. 'm-t+MlM�d!ilMgli}'/•5�e1! k;,:;..MoN�dR u.., rid Wee P. 1aP.lWcWMfnr .i' .'�„-. ,• Nra•: %Vila pjyrijjpji1.. .a°. ,.�b�!P 4 .n!i .! ',. ,: '� !�R?Y G?b!N. 91�a9tMY4a¢bii4!�!ir[::' • i%'y+' - . ApaioyVweilr;_..•!lgalp. .. *IV Wet 171ale Agency UPS* W*NW: A :S`. ''ile.ii«Midi <•;+•... , Salle Otero* 1XitS tgency •. cat cL+dY t3daranp taaRepaaat °W1414A • ►•sM ' .i"WI MICO COnEL••dlw'.ThN••ua.*fiSelaw.wn pi.4.m}%Ifs ni,(•.,^... . TMb�naayiPapnerd�oiatr . . . :. _ .AkOnni Sara..COPNE,captterrut[?.1N! SE+MN!gi10,*ai 41r*0./Y i .Mpnd• .• - • -ApoKt'Ylriaia, wwnradga.iiY i.ah less N au-• •• •^''..' . Pe*updadat "tam Web"by now: No a 4 schedule aka OYWr4 041201 Anew Cadet 1Sa Wanes WI11,4•aat 011Wt 40 as Inc•710.100.471•VwnaaNpAan•Reportetlen/•1/7010111Aa Pogo 10 sin S Database Sources (Cont.) TAllarAR._ - Sieve /wSr.TriwiT,rq.: 91del lila lips bow aica.w sh5 bat n. - • *pone*w M.for WA not Min* o. TW.e'in YrwN�Siiini!RWtA*: . MSfs await*mks br wanks*Ws sa.pT.nkawin:Tn:uiat ` Aaw� C Cdor anuiadt*oraE,raaymert'I'IMAM.ra&Prme•801% Fwd*.awn aia •• • • Apway.Nltuks' heratoaar.e..mwaorwawra;aiyananip- . . . AMP/UP4S* 6110100 waled by Avow Vaasa dosed soma aunt 151N102 AOrty Gallic! WadiS1w4P tastR.qurya; TANIanAtt !cyst flits las mu..a .•.•pw.rd..bardmanpia.l aa.W le*w.A.trl cal• haul np ..Msti.'. . . *apaq.Nant Cotaaao`Wpto(L.bori Facicyu KOMrm of S Prig sat',0l ArpuAri'' ._. - Ma lr blpWo.6.m..gd.cmuMan.asp• . . . 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'.` - - - I�QdttW-�1601v!�Ep�N��ir::. Awn40tb.7R' wirailbAtriVOSICWAVICiLipaAWMUSERMODIt ApwOT Upat ebff��4urY•dnW�PMnn. .:.; Said OUS.t OVUM Updated Wiping: Nan.�r . last Ropu.dit ovt0o1 Ataxy Caw.ct Ran. • IP bid Inc.720-2004473•Uvw....d.cmi.Raw•s60060t.twos ins Pas 11 012 • Database Sources (Cont.) di: '114:m4i' - r . unwise . kurne 13 IRO=20•241•46§0 pwwi.yrdaiwwwmdr.ra+0!?I un4cin). • •• Ramie.'Caww*tw(i R.ognipAii QCRP C.nmltte*s•-4044421071•40/c. . . Cgnssw sS:RaaOwMYHOq�Ea1S➢I1r RCM16).. ... : . Mang How USEPA•VMM 6MW Envioi.lwidi PrYab.ABRiry,O6laiaf8e6d Yya.l. • AOwkyyRdwic. www..pi �MiersuliFNfgy.Aun'•' Army waist 1W1..Or WdSS by/4p4001: kin* . . Ida aswk 12242/24 AonyCartae Tanyt.1. Lid 1149 444101 12/16/04 *MUM Iowa p/RCRY+TMMieiYs M!YM0ahM RMwaa'Cwrwbni Raaowy.lnkinwkn ,•, .• 8nhnptraS)01id6 k$0.:. alpoiyy1.40RRACfg,TSCL.otOm..ava nN.lxltdn.. . . .. Mrrd4e?40067/nippy..,Na#1o$Mtla aJY lm•PWid.ollwi*M Mrald?ww.W. • vAn°a1Pn�WraSbnd?1�W.laimirl?rw.lon.Md mwi. ..: r:, AgenyRmnc VS EPA.1hiYd 8064E4vin ninlR Prl.aon't nch ClSiri$140211/04/44: . • AQIIWV*WM 'www aiWwd byAfin. .. . . . AOwwy Upd.Y* 1 law Upd.W WApr.y: MG*4 Said CalWut 12112/04 pact Contact Tart S.6. WIRa,...t 12Ha 4 • 6.6ri Inc s 720.2006473•www.rw.fi.aom•Repot a 122/06 11:60 Pap.nor 12 • ATTACHMENT D QUALIFICATIONS S A.G. Wassenaar 2180 enuvterr'Caolorraadoo 80222. 60 303.7594100 Fax 303-758-2920 • Geotechnical and Environmental Consultants CO www.agwassenaaccom RESUME JULIE A.HAMMER Environmental Scientist EDUCATION: Bachelor's Degree in Environmental Studies,University of Colorado,Boulder,CO,2002 EXPERIENCE: Ms. Hammer began working with A.G. Wassenaar, Inc. in May 2003. She was hired as a staff environmental scientist for the Environmental Department. Responsibilities include the following: Industrial Hygiene Mold growth and moisture intrusion evaluations in response to water losses Initial and conformance mold inspections of basement subfloor and crawl spaces Indoor air quality investigations pertaining to mold and fungal growth Inspections following finis in residential or commercial buildings • Asbestos Air Monitoring Specialist(AMS)duties for asbestos abatement projects Asbestos surveys of commercial and residential buildings Asbestos sample collection including soil and building materials Phase I Site assessments for both buyers and sellers of commercial,industrial and residential real estate TRAINING: EPA-Approved AHERA Asbestos Inspector Colorado State Certified Asbestos Building Inspector EPA-Approved AHERA Mr Monitoring Specialist Colorado State Certified Air Monitoring Specialist MEMBERSHIPS: American Industrial Hygiene Association I A.G. • ssenaar 2,90 South Way 90 ore Strot.Suite 6 Dem,er, CWorado 222-67,0 •Geote chnicai and Environmental Consultants 303-7594x00 Fa"ws-755 0 C. www.apwassenaaccom BALM BRIAN I.GLADE,P.E. Vice President EDUCATION: B.S.,Civil Engineering,Colorado School of Miines, 1979. EXPERIENCE: Mr.Glade has been managing the environmental department at A.G.Wassenaar,Inc.for over fifteen years and is currently a partner in the firm.Mr.Glade represents over twenty-four years of experience in field investigation and construction engineering. This experience includes both large and small scale field construction projects, including projects involving excavations in soil and rock, investigations of soil and water contamination,and design and installation of numerous% mediation systems. Mr.Glade's most recent experience has been in the hazardous waste field and includes the following areas: design and construction of the first activated carbon water treatment plant operating at a landfill,within the state of Colorado;investigation and soil remediation of a non-operational wood preserving plant in Colorado Springs,Colorado;investigation of a major benzene hydrofeed pipeline leak in northern Texas,and investigation of dry cleaning facilities in Colorado. Mr. Glade is also involved in real estate transactions for both buyers and sellers of commercial, • industrial, or residential real estate. This involvement ranges from a simple walk-through to a complete background research,interviews,and groundwater/soil sampling program. These sites have included: pesticideIherbicide manufacturing anddistributioncenterfastf oodfranchises,majormulti- story office buildings, industrial properties, and vacant land. Mr. Glade has conducted audits in Louisiana,Florida,and throughout the western United States. Mr.Glade is heavily involved with imple menting current underground storage tank(UST)regulations and advising clients on federal,state,and local regulations concerning USTs,including removal of numerous USTs in the Colorado and Wyoming area. Mr.Glade's experience includes both hazardous and non-hazardous USTs and involves investigation design and remediation of contaminated sites. Mr. Glade has been qualified as an expert witness while testifying in a dry cleaning remediation lawsuit in Colorado. PROFESSIONAL REGISTRATION: Colorado MEMBERSHIPS IN ORGANIZATIONS: Colorado Groundwater Association Colorado Hazardous Waste Management Society(CRWMS) TRAINING 40 Hour OSHA 1910.120 • AHERA Asbestos Inspection • REFERENCES • REFERENCES Colorado Department of Public Health and Environment. Review of Select Files. 31 Janu ary 2005. Colorado Oil and Gas Conservation Commission. COGCC GIS Online. <http://www.oil- p,8s.state.co.us/> Colorado Oil and Gas Conservation Consnission. Review of Select Files. 9 February 2005. Federal Emergency Management Agency,Flood Rate Insurance Map Panel#0802660900O. Ham,Richard. Personal Interview. 2 February 2005. Harris,Christine.Personal Interview. 2 February 2005. Landiscor Aerial Information. Aerial Photo Review. Perkins,Dave. Personal Interview. 25 January 2005. Satisfi Environmental Information. Cultural Feature Maps dated 1937/41, 1947, 1947/56, 1969/75, and 1969/80. ( Satisfi I3nvironmental Information. Envfromnent4 Database Search. "Harkin Property,Hudson,CO"- 22 January 2005. United States Department ofthe Interior,Geological Survey(USGS)Topographic Maps, Mug Range, Colorado Quadrangle: 1951 and 1950(photorevised 1971). United States Department of the Interior, Geological Survey(USGS) Topographic Maps, Milton Reservoir,Colorado Quadrangle:1851 and 1950(photorevised 1971). Weld County.Online Assessor Records:<www.co.wekdco.us/> Weld County Maps. Sheets 6 and 7 dated 1978. 1 • -.7--,, ,---,: 7 • SWCA .-. b Li ENVIRONMENTAL CONSULTANTS • Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado Prepared for A. G. Wassenaar, Inc. • Environmental/Geotechnical Consultants Prepared by SWCA Environmental Consultants • February 2005 •...7.- . Y +6 N 1. \ '� .. 4it : i. 1,-1,•;',i1.:\ • �y t�C. . a Y.\„ �+Yr.‘It c")1',., � . s�ti > at , 't J`+ 1� ?�,1J',-t i �"' 1' Svt v•-,� t.�z�' y' ,o-:� 9 •fr.,,: _ �. .. --''..--7..r-,-,'.:-,.; � � o ems{ `F � t. — '�`C. � �� l �� T '..r��'L�]Ly, � � : 4 Y 11,:' �M1i t r "Y •1 qt ..'\ 'ti't > I �f �" "�i 39 ?4'4' ✓t `;1.".: !f r1 •.-\, t ,:‘,.1•'",...•. �:� ? :F. ,fie` (::-1 .3 :• -": .:. • Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado Submitted to: A.G.Wassenaar,Inc. EnvironmentallGeotechnical Consultants Prepared by: Heidi Guy Hays,Paul Burnett,and Scott A.Slessman SWCA Environmental Consultants 295 Interlocken Boulevard,Suite 300 • Broomfield,Colorado 80021 (303)487-1183 www.swca.com Scott A.Slessman,Principal Investigator SWCA Project No.9235-169-073 SWCA Cultural Resource Report 2005-39 February 2005 • Class!Archaeological Literature Review for the Harkins Property, Weld County, Colorado • TABLE OF CONTENTS ERE INTRODUCTION 1 CLASS I INVENTORY RESULTS 3 File Search Methods and Information Sources 3 ' Culture History 5 Soil and Environmental Data:A Predictive Model 7 SUMMARY AND CONCLUSION 9 REFERENCES CITED 10 LIST OF TABLES Table pees 1 Land Patents Granted in the Project Location 3 2 Previously Recorded Cultural Resources Located Outside the Project Area 5 • LIST OF FIGURES Figure pave 1 Project Location Map.Figure 2. Class I Project Boundary Map. 1 2 Class I Project Boundary Map 2 3 Land Patents within the Class I Project Boundary. 4 4 Soil Survey Geographic Database(SSURGO)Map Units for the Proposed Harkins Project Area. 8 • i�9211169 aclarhtyi 6aaLdoc ii Class'Archaeological Literature Review for the Harkins Property, Weld County, Colorado INTRODUCTION • On January 29, 2005, SWCA Environmental Consultants (SWCA) conducted a cultural , resources file search for approximately 5,600 acres in Weld County, Colorado, for A. G. Wassenaar, Inc. (Figure 1). The search was conducted through the Colorado Office of Archaeology and Historic Preservation (OAHP) COMPASS database, the Colorado State Historic Preservation Office (SHPO) in Denver, and the Government Land Office (GLO) records website(www.glorecords.blm.gov). The 5,600-acre project area is located at the intersection of Weld County Road 22 and Weld County Road 49, 6 miles northeast of Hudson, Colorado and 5 miles northwest of Keenesburg,Colorado. The file search was conducted for Sections 1,2,and 11-15,Township (T) 2 north (N), Range (R) 65 west (W); Sections 4, 5, 7-9, 17, and 18, T2N, R64W; and Section 32, T3N, R64W(Figure 2). The project area is located in gently rolling topography and Klug Lake is situated in the middle of the area. aMit OSIA • 9070 . , g 8 ms. au _ IIM alit ymv, 90f9 . 030A 99e 9 y ARAPAHO[ 9w � 9 • S „op Lope• — 9 n�..�9.. A aY..r.a..,�.. SWCA tir.m whs.*Hl..q y "win Clan ti: Figure 1. Project Location Map. • ,A 9235.169 IMias dm Mantis_SSAoc 1 IllH9'.. -:::e 1 <--. ."--- Ici 'go '� (.�s 238.7 3 (Al WBme N 1 is , 2 o a F ----�---- ?:m r p ! m o • a� '' o "rte 3 c�m 1 § U; - odc 03 �► QQ ? In 0 J N $2. Z. ii 1 a r-, r-, !- ci ID a 0) 0. 3 1 rmcto J 1 t A,�\-.,e , X42 oy c -0 I cc N .i. In CO 13 �. o winaI-di � I'—me• ". 3..--,-"Ik % N av ,n itt if__ c0 3 'r col � a) o z J / o GC • o .: s 1EJ • t. V • t N s. ....----17—2 iRke., d .: 'F �� / f •ea , I Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado CLASS I INVENTORY RESULTS • File Search Methods and Information Sources A literature review and computer file search was performed for the effected area through the SHPO(Search I.D.#12459),OAHP COMPASS database,and GLO records website. GLO patent records indicate that the majority of the property was originally held by several private individuals as well as the Union Pacific Railway Company (UPRC) (Figure 3). The property was not claimed in the initial 1862 wave of homesteading in Colorado. Instead, many of the individuals were granted land patents in the project area between 1895 and 1920 (Table 1). The land in the project area was acquired during the early-1890s wave following Homestead Act reforms; the final wave of homesteading occurred around 1916 and ended with Great Depression era reforms. It is possible that the UPRC claimed the land as early as 1862 with original federal railroad land grants,and that the property was not patented until the 1890s when the UPRC experienced restructuring. . _ Table 1. Land Patents Granted in the Project Location. Land Patent Grantee PatLent Date Location(T/R/S,Quarter) John Adamson 1895 T2N/R65W/Sl4,NW'/. • Christ Junior Oster 1897 T2N/R65W/S12,SW% Frederick Ireland 1895 T2N/R65W/S12,SE'/ Railey Draper 1904 T2N/R65 W/S 12,NW'/. • Clarence Ireland 1899 T2N/R65W/S12,NE'/. Sarah McKnight 1896 T2N/R65W/S12,SW'/. James Corlew 1903 T2N/R65W/S12,NW''. Charles Worsfold 1903 T2N/R65W/S12,NE%. Philip Gorringe 1903 T2N/R65W/S12,SE% Bert Zinn 1920 T3N/R64W/S32,SW'/. Jacob Kinsey 1919 T3N/R64W/S32,NW'/. Fanny O'Hair 1915 T3N/R64W/S32,NEY. John Beam 1916 T3N/R64W/S32,SE%. Charles Eich 1914 T2N/R64W/S4,SW'/. John Pierce 1919 T2N/R64W/S8,NW'/. Fern Scott,Homer Scott 1917 T2N/R64W/S8,NE'% Effie Pierce 1920 T2N/R64W/S8,S''A Elizabeth Weare 1903 T2N/R64W/S18,NW'/. Frank Budelier 1919 T2N/R64W/S18,NE'/. Clarence Ireland 1916 T2N/R64W/S18,SE'/. Union Pacific Railway Company 1903 T2N/R65W/Sl,All Union Pacific Railway Company 1897 T2N/R65W/S11,NW'/,SE'%,NE 1 and 515,All Union Pacific Railroad Company 1902 T2N/R65W/S13,All Denver Pacific Railway and Tel, 1902 T2N/R64W/S5,E'%;S7,E'/:and E''A,W%,; S9, Union Pacific Railroad Company All;and S17,All T/R/S=Township/Range/Section • .13233-169!when dais Atha i t&44.c 3 tr - _ . / s c_c______, H 1 no mss_ 'll 1C 1 Wfd zjEm EN- I k C' E� I ww Y• • w r .� 9� Sang��' o '.'' a °,c� �Z �, . . ✓ \I 3 ° g as ..,,� i p w co V o a d F elf, �S. qo •�as ;g_ S x a_ • ° " 7 8p. I ' a • 3 � �� V-- - r F • , € � o' ge w = w i i I I (&) ca I0 -.. i i .32 , 4 . .4 , 1 balsa, .yy I re 8/_ ! S �ois ` �B � r • .- � - L yi • 4 - C4.21Co k)--r-H-TM i cMS • f li ! t ~ IJIJIJIHI Eo ? b• V, U UUUOUOU a __ it ___ __ ;) I I, ,. . 4 •I- it h 0 ;.: b i •V il Is o i s 6 ir w C 2 O fi j z � aab • rTh— c� Y 9 a j lli U j m Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado t ! The OAHP and SHPO reviews indicated that no previous cultural inventory work had been • conducted in the project boundary and no cultural resources have been recorded in the project area. Several cultural resource inventories occurred outside of the current project area but , only two inventories took place immediately outside of the project boundary. Greystone Environmental Services, Inc. conducted the Juno Pipeline Class III Cultural Resource Inventory in Adams, Arapahoe, and Weld Counties, Colorado (Spath 1999). This inventory _. covered a small parcel in T2N, R65W, Section 1 and recorded one historic isolated find (5WL3171) and the Neres Canal East and West (5WL2754). The Neres Canal was first constructed in 1890 and was determined to be not eligible for the National Register of Historic Places (NRHP). The second inventory was completed by the Colorado Department of Highways for a bridge in Yampa BRS in T2N, R65W, Section 11 (Anjgulski 1988). No cultural resources were recorded by this survey. The cultural resource inventories performed around the project area recorded few sites. A list of previously recorded sites on land adjacent to the project area is provided in Table 2. Table 2. Previously Recorded Cultural Resources Located Outside the Project Area. NRHP Site Number Location(T/R/S,Quarter) Eligibility Site Type . Status* 5WL196 T2N/R65W/S22 and 27 N/A Prehistoric open camp 5WL1069 T3N/R64W/S30 FNE Box Elder Cemetery 5WL2753.3 T2N/R65W/S21 and 28 FND Beebe Seep Canal • 5WL3171 T2N/R65W/S1, FNE Historic metal isolated fmd NWWSW'/JSE''A NE'% 5WL3236 T2N/R65W/S24 FNE Historic water control feature 5WL3237.1 T2N/R65W/S22 and 27 FNE Historic water control feature FND = Field Need Data FNE = Field Not Eligible N/A = Not Applicable T/R/S = Township/Range/Section Culture History The project area is in the northern Colorado River Basin as defined by the Prehistoric Context for the Platte River Basin(Gilmore et al. 1999). The Platte River Basin was used by a variety of Native American groups throughout all of prehistory, beginning with Clovis hunters at the end of the Pleistocene and continuing through to the onset of European occupation of the region (Gilmore et al. 1999). The context provides a comprehensive overview and summary of our knowledge of prehistoric and early historic developments of the region. The Paleoindian stage, ranging from 12,0400 to 5,740 B.C. in the Platte River Basin, represented the earliest human migrations to the New World during the environmental changes of the Pleistocene era. Projectile points associated with this group are found mostly • .:WDYI69 lark..i..Massa.,._fiml.doc 5 Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado • along rivers,which were environments well suited for megafauna. This indicates an emphasis in big-game hunting by the highly mobile peoples of the Paleoindian stage. This population also gathered roots, nuts, and berries, and hunted small game. Paleoindian technology is characterized by regionally similar tools, necessitated by a highly mobile, big-game hunting lifestyle. The Paleoindian stage in the Platte River Basin includes three periods: Clovis, Folsom, and Plano. In addition to these periods,there is evidence of Pre-Clovis occupation in the Platte River Basin. Three sites have been recorded and investigated that lend substantiation to this early activity,two sites located near the east edge of the Colorado border and one site located approximately 20 miles southwest of Denver(Gilmore et al. 1999). Clovis sites (12,040-9,750 B.C.)are rare in the Platte River Basin with only six being found in this region. Four of these Clovis sites are within an approximately 30-mile radius of the current project area. There have been 23 Folsom sites (11,340— 8,720 B.C.) identified in the Platte River Basin. One Folsom site is relatively close the project area while one is within 30 miles. The Plano period (10,850 — 5,740 B.C.) is more substantial with 46 sites being recorded within the region, five of which are located within a 30-mile radius of the current project area(Gilmore et al. 1999). In the Platte River Basin, the Archaic stage developed and lasted from 5,500 B.C. to A.D. 150. During this stage, the native populations developed subsistence and settlement patterns in response to the fluctuating environmental conditions that existed at the time. During the Early Archaic (5,500 — 3,00 B.C.),the mountains and foothills were cool and wet, while the plains were hotter and drier. Early Archaic projectile points tended to be large, side-notched • dart points. Twenty-six sites are attributed to the Early Archaic in this region; only two of these sites are within a 30-mile radius of the project area. The Middle Archaic(3,000— 1,000 B.C.) saw a return to a cooler climate throughout the region and a subsistence pattern based on a broader range of plants and animals. An increase in grinding devices, lanceolate projectile points, stemmed projectile points with concave bases, and comer-notched Elko series projectile points are common for this period. Archaeologists have recorded 35 Middle Archaic sites in the Platte River Basin. These sites tend to be centered on the foothill transition zone west of Denver. Two Middle Archaic sites have been recorded within a 30- • mile radius of the project. The Late Archaic (1,000 B.C. - A.D. 150) population is characterized by larger sites that were occupied for a longer amount of time and were more intensively used than those of the Middle Archaic. Projectile points from the Late Archaic are generally large corner-notched and side-notched(Zier and Kalasz 1999:100-136). There have been 40 Late Archaic sites recorded in the Platte River Basin,none of which are within close proximity to the current project area(Gilmore et al. 1999). In the Platte River Basin, the Late Prehistoric stage dates from A.D. 150 to 1,540 and is divided into two periods: Early Ceramic(A.D. 150- 1,150) and Middle Ceramic(A.D. 1,150 — 1,540). The Early Ceramic period is represented by the appearance of the bow and arrow, intensified development in bone and shell technology, the appearance of ceramics, and structural surface architecture. Three Early Ceramic sites have been recorded in a 30-mile radius of the project area and a total of 67 sites have been recorded within the Platte River Basin. During the Middle Ceramic period, a semi-sedentary settlement pattern developed and architecture became more prevalent and diverse, pottery became more diversified, and projectile points were smaller and triangular with side-notches or were un-notched. Thirty- . [9235-169 babe the,e.s i tp_6rA6cc 6 Class!Archaeological Literature Review for the Harkins Property, Weld County, Colorado one Middle Ceramic sites have been identified in this region, three of which are in close • proximity of the project area(Gilmore et al. 1999). r The Protohistoric period (A.D. 1,540 - 1,860) begins with the contact of native populations and Europeans and ends with the European domination of the region, and includes the introduction of horses (Gilmore et al. 1999). Twenty-six Protohistoric sites have been recorded in the Platte River Basin; no Protohistoric sites have been identified near the current project area. Soil and Environmental Data: A Predictive Model Using the most detailed soil maps and associated data recently made available for southern Weld County (NRCS 2004), the potential for subsurface archaeological deposits in the proposed Harkins project area can be estimated. While estimated depths of Holocene sediment are not available in the dataset,erosion factors are available and serve as a proxy for sediment depths. One erosion factor, the "T-factor," provides an estimate of the amount of topsoil (in tons) that can be lost per year while still remaining agriculturally productive. Potential values range from 0 to 5, with 5 being the deepest sediments and 0 representing no sediment (i.e., bedrock). In the Harkins project area, values are between 4 and 5. All map units have a T-factor of 5 with the exception of the Ascalon sandy loam (Figure 4) in the ' southeastern portion of the project area,which has a T-factor of 4(meaning that the solum can sustain up to 4 tons of sediment loss per year while remaining productive). While portions of the project area have minimal subsurface archaeological potential,the area • as a whole is estimated to have a high potential for buried archaeological material based on the high T-factors. Archaeological sediments are predicted to be deeper on concave slopes and adjacent to streams(floodplains and terraces), but even convex interfuvial slopes appear to have the potential to yield intact subsurface archaeological deposits. Although the entire project area has the potential for buried deposits,previous archaeological research in the area ' has indicated that sites are typically located near water sources(Bettinger 1991; Gilmore et al. 1999; Hill 2002; Slessman 2004; Slessman and Kennedy 2002). Given this trend, it is postulated that surficial or buried archaeological sites within the study area would most likely be found along drainages or near natural springs. $ • 923S-I Skim d k �s,_ ani uteot 7 • I !fill= 1111111111 2 r • ten . aappdd c...n $8 18i my, �JJrrg8 V ii ""Ifil w !!il 4 an h mrd lilt it o IiIiinI11IhJI!hI. MI 1EH 9 I . I I 1 1' a i f. R7 o Via* e W ill'Illfr _. __ a • i 0O . y _ a to O _ 0 CI den Pa 4 p y b fA . l -:3_, ,' .- r Ch _ y ' \ "lb _ "\:J a i3 1 ,. OD U w, : : , )4;49 -' A t I ern • W Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado SUMMARY AND CONCLUSION • Although the Class I file search did not reveal any cultural resources or inventories in the e , project area, it did indicate the presence of historic and prehistoric sites in the neighboring sections. Information complied during the Class I cultural resource file search of the Harkins property indicates that the land was historically utilized as rural agricultural land as well as by _ . the UPRC. The railroad supported and encouraged the settlement of this region as well as supplied the area with coal,lumber,household items, and construction material. The property has also been affected by water control measures associated with agricultural activities in the - • area. Historic drainage control in the area includes the construction of several wells and - irrigation canals, one of which is the Neres East and West Canal system that was formally recorded adjacent to the project area. The canal system was recommended as not eligible for the NRHP. The likelihood of historic sites being encountered in the project area is moderate to high due to the concerted level of historic activities in the area, such as homesteading, ranching,and agriculture. Prehistoric sites have been recorded in the land around the project area,and an examination of soil data concluded that deeply buried soils are present. Due to the existence of deeply buried soils and archaeological sites adjacent to the project area, it can be extrapolated that prehistoric sites may exist within the boundaries of the proposed development. Previous archaeological research has indicated that prehistoric sites are most likely to be encountered - along major drainages or other natural water sources. Based on the existing archaeological research, if buried sites are present within the proposed development, they would be encountered along major drainages. • It is important to note that because the project is not implicated with a Federal or State of Colorado action (involving Federal or State money/land), the developer is under no legal - • obligation to mitigate any adverse effects to a cultural resource (prehistoric or historic). If a buried site was discovered during development, the developer could choose to mitigate any potential adverse effects by conducting an archaeological excavation. It is possible to defer the costs of the excavation as a tax benefit in consideration for public outreach,in conjunction with local universities. The developer may choose to hire a qualified archaeologist to monitor any ground-disturbing activity or, at the very least,notify a qualified archaeologist if a buried archaeological deposit is discovered. EW31S169 harkens elms Odes i rpifirial doc 9 Class I Archaeological Literature Review for the Harkins Property, Weld County, Colorado • REFERENCES CITED r T Anjgulski,D. 1988 Archaeological Survey Bridge in Yampa. Colorado Department of Highways. Bettinger,R L. 1991 Hunter-Gatherers:Archaeological and Evolutionary Theory. Plenum Press, New York and London. Gilmore,K.P.,M.Tate,M.L.Chenault,B. Clark,T.McBride,and M. Wood 1999 Colorado Prehistory:A Context for the Platte River Basin. Colorado Council of Professional Archaeologist,Denver,Colorado. Hill,M.G. 2002 Paleoindian Diet and Subsistence Behavior on the Northwestern Great Plains of North America. Unpublished Ph.D.dissertation,on file at the University of Wisconsin-Madison,Wisconsin. NRCS 2004 Soil Survey Geographic(SSURGO)Database for Weld County, Colorado, • Southern Part. U.S.Department of Agriculture,Natural Resources Conservation Service,Fort Worth,Texas. Available online at http://SoilDataMart.nrcs.usda.gov. • Spath,C. 1999 Juno Pipeline Class III Cultural Resource Inventory, Adams,Arapahoe, and Weld Counties, Colorado. Greystone Environmental Services,Inc.,Denver, Colorado. Slessman,S.A. 2004 The Frazier Site:An Agate Basin Occupation and Lithic Assemblage on the Kersey Terrace, Northeastern Colorado. Unpublished Master's thesis,on file at Colorado State University,Fort Collins,Colorado. Slessman,S.A.,and J.D.Kennedy 2002 Archaeological Excavation at the McNaney Site (5LR9991), Larimer County, Colorado. Prepared for Larimer County Engineering Department,Fort Collins,Colorado. Zier,C.J.,and S.M.Kalasz 1999 Colorado Prehistory:A Context for the Arkansas River Basin. Colorado Council of Professional Archaeologists,Denver,Colorado. • cV2)S-169!who"du kW't�Emit 10 I D& A.G.WASSENAAR, INC. GEOTECHNICAL CONSULTANTS PHONE: 303/7598100 FAX: 303/756.2920 2180 S. NANHOE, SUITE 5 DENVER, COLORADO 80222 • CI , t±) • GEOTECHNICAL DUE DILIGENCE STUDY FOR HARKIS FARMS PROPERTY WELD COUNTY,COLORADO • PREPARED FOR GATEWAY AMERICAN PROPERTIES,LLC 9145 EAST KENYON AVENUE,SUITE 202 DENVER, COLORADO 80237 FEBRUARY 24, 2005 PROJECT NUMBER 80835 • I D� A.G.WASSENAAR, INC. - I ----___ GEOTECHNICAL CONSULTANTS PHONE: 303/7548100 FAX: 303/156-2920 2180 S. NANHOE. SUITE 5 DENVER, COLORADO 80222 . February 24, 2005 Gateway American Properties, LLC 9145 East Kenyon Avenue, Suite 202 Denver. Colorado 80237 Attention: Mr. Tom DiRito Subject: Geotechnical Due Diligence Study Harkis Farms Property Weld County, Colorado Project Number 80835 Gentlemen: We have conducted a geotechnical due diligence study at the subject site. Our summary of the data collected during our field and laboratory work and our analysis, opinions, and conclusions are presented in the attached report. The purpose of our study is to provide preliminary geotechnical information for planning, site development, foundations, and pavement for the proposed parcels. • In general, the test borings encountered 16 to over 30 feet of sandy to very sandy clay,clean to silty or clayey sand, and/or weathered bedrock overlying sedimentary bedrock. The bedrock consisted of claystone and sandstone. Ground water was measured at depths ranging from 61/2 to 27 feet in 29 of the 62 borings drilled during this study. Twenty-four(24)of the borings had caved at depths ranging from one (I) to 27 feet. Site development considerations should include provisions related to relatively shallow ground water, excavation and site grading in the sandy soils, and the presence of expansive clays and claystone bedrock across the parcel. Based upon the results of this preliminary study, we expect that most of the structures constructed across the site will need to be founded upon footing foundations. Where expansive clays or • • • Gateway American Properties, LLC Project Number 80835 February 24, 2005 Page 2 claystone bedrock is found at or near to foundation depth, straight shaft piers drilled into bedrock will be necessary.. Slabs-on-grade floors will require consideration of the potential for expansion of soils and bedrock. Structural floors may be required where movement can not be tolerated. Preliminary pavement guidelines are given in the following report. Additional recommendations are presented in the following report. If you have any questions regarding the contents of this report or our analyses of the subsurface • conditions which will influence the proposed development,please callus. We have appreciated the opportunity to provide this service for you. Sincerely, A. G. WASSENAAR, INC. Thanarach Aksharadananda�ar tir Staff Engineer ` kaki* ��i* is•.y{�T / _ t�D.8�yr�9� </ v Keith D. Seaton, P 2 ..8.. . e Project Engineer ti iliatinnottO TA/KDS/I i a • TABLE OF CONTENTS • TITLE PAGE PURPOSE I PROPOSED CONSTRUCTION I _ SITE CONDITIONS 2 FIELD EXPLORATIONS 2 LABORATORY TESTING 3 SUBSURFACE CONDITIONS 3 DEVELOPMENT CONSIDERATIONS Ground Water 5 Excavation and Site Grading 5 Expansive Clays and Bedrock 7 7 SITE GRADING 8 STRUCTURE CONSTRUCTION • 8 PAVEMENTS 9 FINAL DESIGN CONSULTATION AND CONSTRUCTION OBSERVATION 10 GEOTECHNICAL RISK 11 LIMITATIONS _ II ATTACHMENTS SITE PLAN AND VICINITY MAP FIGURE 1 LOGS OF EXPLORATORY BORINGS FIGURE 2 THROUGH 12 DEPTH TO BEDROCK MAP FIGURE 13 ESTIMATED DEPTH TO GROUND WATER MAP FIGURE 14 LABORATORY TESTING APPENDIX A • Geotechnical Due Diligence Study • Harkis Farms Property Weld County,Colorado February 24, 2005 PURPOSE This report presents results of a geotechnical due diligence study conducted at the site of the proposed Harkis Farms development, located near Weld County Road 22 and Weld County Road 49,Weld County,Colorado(see"Site Plan and Vicinity Map",Figure I). This study was conducted for the put-pose of generating geotechnical due diligence information for preliminary planning,site evaluation,and development considerations. Factual data gathered during the field and laboratory work is summarized on Figures 2 through 14 and in Appendix A. Our opinions and • recommendations presented in this report are based on the data generated during this field exploration, associated laboratory testing, our experience with similar type projects, and our understanding of the proposed project. This report was not intended to provide design criteria for site development, foundation or pavement construction. Additional geotechnical studies will be required to develop these types of design criteria and construction recommendations. PROPOSED CONSTRUCTION It is our understanding that the subject site will be developed for residential housing, associated infrastructure, and associated commercial development. Specific details of construction and site configuration are not known at this time. • SITE CONDITIONS • The site occupies approximately 5,612 acres of land which generally surrounds the intersection of Weld County Road 22 and Weld County Road 49(see Figure I). Approximately 1,100 acres are irrigated. The remainder of the site is covered by rangeland grasses and cacti. Some trees are located near drainages or irrigation canals. The site regionally drains from south to north. Box Elder Creek flows through the west central portion of the site through the breached Klug Reservoir Number 3. The creek was thy at the time of our field work. The Neres Canal and Beebe Canal are located near the western boundaries. An unnamed ephemeral drainage bisects the eastern portion of the property. Several stock ponds are located along this drainage. Several residences and farm/ranch outbuildings are scattered across and around the site. Topographically. the site is roughly divided along the eastern edge of the Box Elder Creek flood • plain. To the west, the site is relatively level. Most of the irrigated land is contained within this region. To the east, the site is characterized by rolling hills. The eastern drainage divides ridges along Box Elder Creek and the eastern property line. Approximately 160 feet of relief was noted across the site on USGS mapping. FIELD EXPLORATIONS Subsurface conditions were explored by drilling 62 test borings at the approximate locations indicated on Figure 1. The borings were staked in the field by the Client. A few of the borings were moved somewhat due to site access considerations. Test Boring 7 could not be accessed due to soft surface conditions. The borings were advanced using a 4-inch diameter,continuous flight auger powered by a truck-mounted drilling rig. At frequent intervals,samples of the subsurface materials • 2 • were taken using a Modified California sampler which was driven into the soil by dropping a 140- pound hammer through a free fall of 30 inches. The Modified California sampler is a 2.5-inch outside diameter by 2-inch inside diameter device. The number of blows required for the sampler to penetrate 12 inches gives an indication of the consistency or relative density of the soils encountered. Results of the penetration tests and location of sampling are presented on the"Logs of Exploratory Borings," Figures 2 through 12. In addition to sampling and logging each boring for material types, ground water measurements were made at the time of drilling and again eight (8) to 10 days after drilling. LABORATORY TESTING The samples were returned to our laboratory where they were visually classified by a geotechnical engineer. Testing was then assigned to specific samples to evaluate their engineering properties. • The laboratory tests performed included 58 settlement-swell tests to evaluate the effect of wetting and loading on the selected soils samples. The results of the settlement-swell tests are presented in Appendix A on Figures A-1 through A-29. Forty-one(41)gradation analysis tests and Atterberg limits tests were conducted to evaluate grain size distribution and plasticity. These results are presented in Appendix A on Figures A-30 through A-50. In addition,representative samples were tested for unconfined compressive strength, water soluble sulfates, and soil corrosivity. The laboratory testing is summarized on Figures 2 through 12 and Table I in Appendix A. SUBSURFACE CONDITIONS Our test borings indicate the subsurface materials,in general,consist of approximately 16 to 30 feet of loose to dense,clean to silty or clayey sand,sandy to very sandy clay,and/or weathered bedrock • 3 overlying claystone or sandstone bedrock. In 13 of 62 test borings, bedrock was encountered at • depths of 16 to 30 feet. Ground water was measured at depths of six and one-half(6%) to 27 feet at the time of drilling and at depths of seven (7) to 27 feet eight (8) to 10 days after drilling. Twenty-four(24) test borings caved at depths of one(1)to 27 feet. A more complete description of the subsurface materials and ground water is shown on Figures 2 through 12. Depth to bedrock and estimated depth to ground water are shown on Figures 13 and 14. Fill material, which is mostly clay, was found in one(1) test boring. It was of loose to compact, sandy,moist,mottled brown in color. It would be of low plasticity. One test was performed which exhibited a moderate(+2.1%)swell. Any fill found during development should be removed to the natural soils. • Sand was found in most of the test borings. This material ranged from loose to dense,slightly silty to very silty, clean to clayey, slightly moist to wet, brown and light brown, rust, and tan in color. It contained some clay and silt layers. The material was either non-plastic or of low plasticity. The samples tested exhibited no to moderate swell (-7.1 to +2.7%) when wetted under a 1,000 psf surcharge load dependent upon the clay content. The material is generally assessed as possessing no to low expansion potential. Clay was found in 31 of the test borings and varied across the site with depth. The clay was generally medium stiff to very stiff, sandy to very sandy, slightly moist to very moist,calcareous, and brown in color. It contained silt and very fine to coarse sand layers. The material was of low to moderate plasticity. The samples tested exhibited consolidation to very high swell (-7.5% to • 4 • +8.9%) when wetted under a 1,000 psf surcharge load. The low density clays are considered to possess a low expansion potential. The higher density clays are considered to possess a moderate to high expansion potential. Weathered claystone was found in five (5) test borings. The material was stiff to very stiff, silty, moist, brown to olive to gray in color. It was visually of high plasticity and considered to possess a moderate to high expansion potential. Claystone was found in 12 test borings. This material was firm to very hard, silty, sandy, with sandstone lenses,and olive to rust brown in color. It was visually of high plasticity. The samples tested exhibited moderate to very high swell (+3.3% to +7.7%) when wetted under a 1,000 psf surcharge load. The claystone is considered to possess moderate to high expansion potential. • Sandstone was found in two(2)test borings. It was very hard,poorly cemented,silty to very silty, moist, brown to rust brown in color. The material was either non-plastic or of low plasticity. It is considered to possess no to low expansion potential. DEVELOPMENT CONSIDERATIONS Ground Water The major geotechnical consideration to development at the site is the presence of relatively shallow ground water. As shown on Figure 14, relatively shallow(less than 15 feet deep) was found along the western border adjacent to the Beebe/Neres Canal alignment and through the eastern portion of the site along the ephemeral drainage. Relatively shallow ground water was not encountered in • 5 borings closest to Box Elder Creek; however, ground water levels near the creek are expected to • rise during the wetter portions of the year. Dealing with the ground water will require some planning. On the west, the most likely strategy would be to line or encase the canals in order to limit infiltration. The cessation of irrigation may also help, although most of the area is irrigated by sprinklers which do not allow as much infiltration as flood irrigation. The areas on the east likely will be more difficult to deal with. We generally recommend that ground water levels be three (3) to four (4) feet below structures (foundations, pavements, etc.). If the ground water is above this level, special designs may be necessary. These include extensive drainage systems, possibly limiting excavation, stabilization of soils and pavement drains or blankets in order to limit frost heave of roadways. Several types of area drainage systems may be possible(e.g.,infiltration galleries,interceptor drains,subdivision • wide area drains, etc.); however, the feasibility of any area drainage system would he dependent upon finding a suitable gravity discharge for a permanent outfall. Active systems(pumping) may be feasible and necessary for temporary construction (e.g., well points to facilitate sewer line construction); however, we do not believe that active pumping will prove feasible for long term ground water relief. Additionally,removal of the shallow ground water may affect previous down gradient water rights. Based upon the size of the site, it may be more feasible to raise the grades in the area of the shallow ground water to allow construction to proceed without removal of the ground water beneath the site. Additionally, in some areas it may be feasible to limit below grade construction(e.g.,parcels with townhome construction on post-tensioned slab foundations)in order to limit the amount of fill necessary while providing sufficient separation from the ground water. • 6 • Excavation and Site Grading Excavation and site grading will involve some challenges across the site. Excavation of the • predominant sands across the site should be relatively easy for typical earthmoving equipment. However, it may not be feasible to construct relatively steep excavation cuts due to the lack of fines in many of the sands. This will require that excavations (especially trenches) be laid back more than is typical in residential constructions or that shoring be used. In order to provide permanent cut slopes that are stable and erosion resistant, it may be necessary to construct flatter slopes [e.g., 3:1 (horizontal:vertical) or flatter] than is typical. Fill slopes of 2:1 may be feasible as long as erosion control is completed relatively quickly after completion of the slope. Earthwolrk operations in the shallow ground water areas may encounter unstable soils under typical earthmoving equipment. In some areas, it may become necessary to stabilize the soils prior to fill • placement. Erosion control will need to be a priority during and after construction. The sands encountered will be readily eroded by both water and wind action. Temporary sedimentation basins will be necessary and may require cleaning during construction. Permanent erosion control and seeding should be planned to be constructed as soon as possible after completion of grading. Expansive Clays and Bedrock Relatively dense, dry expansive clays were found in isolated areas across the site. Additionally, claystone bedrock was found below depths of 16 feet in 13 of the borings (see Figure 12). The more expansive clays appear to be present in isolated layers near the ground surface. These • 7 materials may he mitigated by overexcavation or moisture treatment either during site development • or foundation construction. Where site grading brings claystone bedrock near to foundations, construction methods for expansive soils will need to be followed. SITE GRADING Grading of the sites should be able to he accomplished using typical earthmoving techniques common in this area. Some extra work will likely be required due to the cohesionless sands. This will likely include flatter than normal excavated slopes and extensive lay back or shoring of trenches. Excavation and fill slopes will need to be properly designed and constructed to alleviate erosion concerns. Areas of instability are expected where ground water is shallow. STRUCTURE CONSTRUCTION Footing foundations will likely be appropriate for the majority of the site. These will include • conventional footings for non-expansive soils and/or bedrock and minimum dead load footings or footing pads for low expansive clay or clay fills. Stabilization of yielding soils may be necessary in shallow ground water areas. Overexcavation or moisture treatment of expansive clays may be necessary where the bedrock is deep. Pier type foundations will be required on some sites where excavation brings the bedrock near to the surface. The piers will be drilled through the overburden and into the bedrock in most cases. Interior floors may be subject to heaving where placed upon expansive clays or claystone. We believe that where footing foundations are constructed,the risk of future slab heave will be low to • 8 • moderate. Where piers are required, the risk of significant heave will be moderate to high. • Therefore, structural floors may be necessary where the structures are founded upon piers. Drain systems will likely be necessary for all structures with below grade spaces. Extensive drain systems will be necessary where ground water levels are within three (3) to four (4) feet of the foundations. PAVEMENTS The soil and bedrock found across the parcels range from good to poor for pavement support. For residential and residential collector streets where the sands are exposed, we would anticipate pavement thicknesses near to the Weld County minimums (five(5) to six (6) inches of asphalt). The natural clays will require thicker sections(six(6)to eight(8)inches of asphalt); however,their • low to moderate plasticities indicate that significant subgrade preparation should not be required. Areas where claystone is at or nearpavement subgrade will require additional pavement thicknesses (seven(7) to nine (9) inches of asphalt) and will likely require additional subgrade preparation in the form of overexcavation and moisture treatment, overexcavation and replacement, chemical treatment of the subgrade materials with lime, fly ash, etc. or other methods to reduce potential swell and plasticity. For arterial type streets, we would estimate that eight (8) to 10 inches of asphalt would he needed on the sands, 10 to 12 inches on the clays and 11 to 13 inches on the claystone. • 9 The sands encountered are susceptible to frost heave. Pavements which are constructed near to the • existing ground water will need to be constructed to prevent frost heave. This may require pavement drains or blankets of open graded gravel beneath the roadways. FINAL DESIGN CONSULTATION AND CONSTRUCTION OBSERVATION This report has been prepared for the exclusive use of Gateway American Properties,LLC for the purpose of providing preliminary geotechnical criteria for the proposed project. The data gathered and the conclusions and recommendations presented herein are based upon the consideration of many factors including,but not limited to,the type of structures proposed,the configuration of the structures, the proposed usage of the site,the configuration of surrounding structures,the geologic setting,the materials encountered,and our understanding of the level of risk acceptable to the client. Therefore, the conclusions and recommendations contained in this report shall not be considered valid for use by others unless accompanied by written authorization from A. G. Wassenaar, Inc. • Additional geotechnical studies will be required once actual development plans and the details of construction have been established in order to provide recommendations for the design of the site improvements. Once site grading is complete, foundation and pavement recommendations for construction can be prepared. It is recommended that A.G. Wassenaar, Inc. be retained to provide these studies. It is also recommended that we be retained to provide a general review of the final design and specifications in order that the recommendations presented in our reports may be properly interpreted and implemented. Our firm should also be retained to provide geotechnical engineering and material testing services during construction at the parcels. The purpose of these services would be to observe the construction with respect to the geotechnical •10 design concepts,specifications or recommendations, and to facilitate design changes in the event • that subsurface conditions differ from those anticipated prior to start of construction. GEOTECHNICAL RISK The concept of risk is an important aspect of any geotechnical evaluation. The primary mason for this is that the analytical methods used to develop geotechnical recommendations do not comprise an exact science. The analytical tools which geotechnical engineers use are generally empirical and must be tempered by engineering judgment and experience. Therefore, the solutions or recommendations presented in any geotechnical evaluation should not be considered risk-free and, more importantly, are not a guarantee that the interaction between the soils and the proposed structure will perform as desired or intended. What the engineering recommendations presented in the preceding sections do constitute is our best estimate, based on the information generated • during this and previous evaluations and our experience in working with these conditions,of those measures that are necessary to help the development perform in a satisfactory manner. The Developer and Owner must understand this concept of risk, as it is they who must decide what is an acceptable level of risk for the proposed development on the site. LIMITATIONS The professional judgments expressed in this report meet the standard care of our profession at this time in this location. The test borings drilled for this study were spaced to obtain a reasonably accurate picture of underground conditions to develop preliminary geotechnical information for the site. Variations frequently occur from these conditions which are not indicated by the test borings. II These variations are sometimes sufficient to necessitate modifications in the designs. Therefore, • additional geotechnical studies will be required prior to construction. Our scope of services for this project did not include any research, testing, or assessment relative to past or present contamination of the site by any source. If such contamination were present, it is likely that the exploration and testing conducted for this report would not reveal its existence. If the Owner is concerned about the potential for such contamination,additional studies should be undertaken. We are available to discuss the scope of such studies with you. Our scope of services for this project did not include a local or global geological risk assessment. Therefore, issues such as mine subsidence, slope stability, active faults, etc. were not researched or addressed as part of this study. If the Owner is concerned about these issues, we are available to discuss the scope of such studies upon your request. • • 12 Yg ° R 2 �o 4 co • ... P • F W R 0) mj--- 3 9 I 3e I g 2 2 2, - - T — — T - - • • • •I I •P" ; ;LN.,_. ; ; I I I • • g J I • I @ d MOOM J I I I I • 4a I g. b a $ • a F •I! • L as • e v 4 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.1 NO.2 NO.3 NO.4 NO.5 NO.6 ELEV.4803 ELEV.4824 ELEV.4827 ELEY.4823 ELEV.4842 ELEV.4858 -0 0- • 17/12 :-12/12 -18/12 �:yr 10/12 ,''-8/12 10/12 -5 MC-3 - -#200-12 NP -#200-6 5- NP Y_ D • E - 18/12 ;-10/12 -12)12 i; 30/12 :-10/12 10/12 - D P - 10 WS<-50 : MCA MC-3 D0.110 ': MC> E T pH-7.5 -#2005 -#200-7 MC-6 c..;.. -#200.5 10-' P H - C1-0.0002 NP NP ' CON-1.7 !%, NP T - R-7874 • !j H I rj 11 - N - ;{. !% I 19/12 0.10 % - N F -NI"- -25/12 !7• - E !i �. E _-15 6/12 #200.9 4j � 15— F %j :i E T ct`1 NP CA _ E \. !% T \\ — — 0,10 -35/12 0 •\v '%!-20/12 Q. 32/12 - -1••••! \\ - .\ !� . - N. % : - • • \ /,j ii - y•/, -25 17/12 .,..; 10 ;.kit .: - !� : - .•. '4..i: :¢ - - !�, •1. ;;;;;t--23/12 - 30 r` 30 -35 35- 40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 2 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.7 NO.8 NO.9 NO.10 NO.11 NO.12 ELEV.4848 ELEV.4827 ELEV.4826 ELEV.4862 ELEV.4884 • --0 NOT 0- - ACCESSIBLE EL; i.%; - f-::-, - --7/12 8/12 i•:�-14/12 :-14/12 -8/12 - -5 10 MC-4 f.j. DD-112 4200-2 ;-% MC-10 5- - 0 ::• NP C'%; CON-t1 ;�F - `%• WS<-50 .:.'?•: p11-6.9 ; - : CL-O.0004 qj; D - E - -R-11494 44—8112 %I —7/12 ::—8/12 — D L E P — 10 18/12 10/12 NR 'F'' Mat-8 �• -#200-3 10 r T T T H - MC-3 : NP : NP - H - -X200.10 ? % - - I NP I N - - N - 10/12 -14/12 F : MC-17 0,10 F E -15 E - : 4200-7 15- E E ' NP - E 0 T - -6/12 .. 14/12 • --21/12 - NR •-20 .d 20- :i • - 12/12 -14/12- - -25 10 25- - - 0 - - � , i':,I, 16/12 - ' -30 r/ 30 - -35 35- -40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 3 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING NO.13 NO.14 NO.15 BORING BORING NO.16 ELEV.4851 ELEV.4857 ELEV.4841NO. NV.18 8 ELEV.488 65 ELEV.4899 ELEV.4880 -0 COV . T T 0 1 '21 .2 :-::• _5 12/12 15/12 •-8/12 20/12 ,: ti 23/12 '' 20/12 - -#200.10 % • MC-3 ,..•.)... DD-112 - NP •�% -#200-8 {.%. MC-105- -- NP /•%• CON-0.5 - �' - D �% %. E - 11/12 . 14/12 ••-11/12 ••' />.• 10/12D P MC-3 y;`-15/12 :::L-7/12 - T - 10 • -#200-5 .j DD-109 // 00405 E H NP •%; MG-16 J/ MG-21 10- P _ •%; CON-0.8 A- / T // CON-0.4 - H N - 0,8 /� I • •%; 50/11 - /J - N 10/12 //-10/12 - F E - 15 MC 26 ^UC-18.8k 10 �j MC-25 F T •• NP �: b:C J/ -#200-9475- E - 0 %7 N LL-36 - E / \ PI-21 T - /.; // -14/12 `\ - _ �/, DD-102 • / 12/12 y: r/r- MC-23 - -20 / DD-108 10 •%; // SW-0.4 — 0 / MC-22 -_ // WSc-2, 20— J SW-0.0 I/, pH-7.8 /. • // CL-0.0008 , — • — I• �/, R-803 p•. // a —25 50/9 ( 32/12 H! 8 25— — — — — // 3p -35 _ —40 -- 40— SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 4 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.19 NO.20 NO.21 Nan NO.23 NO.24 ELEV.4855 ELEV.4855 ELEV.4845 ELEV.4846 ELEV.4874 ELEV.4876 • COV -0 / • /: _ - 11/12 :-6/12 -11/12 ',�;�-11/12 :-11/12 .-23/12 -5 MC-3 -#200-6 '/•: -#20 - NP �' -#200-11 5- • 0,8 NP - - D E - 19/12 :-1W12 :-13/12 %•-18/12 -19/12 • -11/12 - D P - 10 • MCA •:;:: DD-120 .7 DD-119 : MC-5 WS-<50 P T • -#200-8 MC-10 q. MC-7 -#200-14 H-0.6 10- TP H - : NP *, CON-0.7 %; CON-0.4 : NP P T - iii .�. CL-O.0001 - H - I • •%q ., 8.10416 _ N - �i %% I %y ry. - N F - 2W12 ;-6/12 ;/;� :/:-10/12fey 13/12 • -15/12 E - 15 •ii DD-102 F E - '%i •%; SW-1.7 O/1 15- E %i /i -•- `:- /.' -47/12 •%; � _ pH-8.4 '?.tz- �' . 20 • �V7 CL-0.0004 �. • -- /, 85952 •%; i •/ - t• / - -16/12 •jy-16/12 26/12 / - - .-: / /-20/12 / DD-109 MC 18 25- SW-0.0 - 14/12 -30 r'%: - 30 - -35 35- -40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 5 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.25 NO.28 NO.27 NO.28 NO.29 NO.30 ELEV.4859 ELEV.4853 ELEV.4907 ELEV.4909 ELEV.4901 ELEV.4856 • 10 • T + 4• - ;-20/12 -10/12 -23/12 1' •;-10/12 :-22/12 �/-16/12 - -5 -18/12 -#200-13 7, MC-4 // DD-92 5- - // MC-19 MC-5 NP •?' SW-1.6 •.4.-5- SW-3.9 - - L -#200-9 •: NP '.•-• D - ':'r 0,10 \�t : ; - E - 6/12 -70/12 ;�•.--8112 13/12 -21/12 D P 10 • OD-98 .\., DD-104 MC-4 MC-3 E T MC-24 \\\ 10_ P H - "- CON-0.3 C.k MC-10 -#200-12 -#200-6 -s- SW-0.8 ::1 NP NP T \ J• H N — ,": co, // — L F — —5/72 —15/12 '/, X8/12 // _ N E — 15 •,•\• DD-93 DD-101 r/, // F E - p :\ MC-27 MC-7 r�' 11/12 '/ 15- E -� 'YS' M� CON-4.7 CON-1.7 r D0-95 // - E - ;.{ /, CON-1.1 / - - '�%�13/12 .��//..�- !' PH-7.8 •-:- // '/% NR /" r- CL-0.0003 1:1.1: �/-11/12 - - jJ // /, 1��. /j SW-00 - • - - // // r/. // - /; 118/12 -28/12 r/, 25/12 // - /, /,- y 8 •, -25 .f - // 25- // // _ - // // // / // - /„ // -� /�-11/12 /' /-11/12 - �j-73/12 30 - -35 35- -40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 6 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.31 NO.32 NO.33 NO.34 NO.35 NO.36 ELEV.4850 ELEV.4853 ELEV.4921 ELEV.4880 ELEV.4858 ELEV.4859 • -0 p. / \• - - 22/12 : 18/12 •-11/12 8/12 11/12 " 5/12 00.100 00-101 MC-2 00-103 • DD-107 00.116 -5 MC-5MMC-3 -#200-8 MC-4MMC-5MMC-95_ - CON-2.7 CON-7.1 NP CON-2.5 CON-1.7 CON-0-7 - E - 11/12 . 16/12 ::::r-10/12 ,,/ 12/12 6/12 0_8 -11/12 - D P -10E • MC-3ij 00.114 10- P T -#200-26 ••/ MC-11 T H - - NP CON-1.9 - N - 11 1 !y. / !•.:•:- I N - / ..y. - N - / 9/12 ��NN •j• 29/12 • F / WS-<50 n1Y1 !%• DO-1 . —24/12 — E —15 / 1NN f•.:0: MC-8 , , 15— F E — / pl-I-8.0 41F1 !•,, MC-8 E / CL-0-0022 r SW-0.8 — E T / R-1414 3'j �, T — _ / a1F1 . . / 7/12 —13/12 9/12 — / yy 9 DD-100 0,8 / aj.I CON- - CON-0.1 — • — NI MI •: , — •• Eiii • • 16/12 0,8 al NI 34/12 ;• — —25 � N :b 25- 7i y :(1 - _ I �1 — - it 1 a - -16/12 .G - -30 30 -35 35- -40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 7 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.37 NO.38 NO.39 NO.40 NO.41 NO.42 ELEV.4914 ELEV.4940 ELEV.4935 ELEV.4867 ELEV.4871 ELEV.4871 _0 COV • T • 'I; • • .V: - %•' 30/12 �-11/12 -8/12 .. .-6/12 25/12 L _5 :C. DO-106 j7 >- DD-94 �A' 7/12 - %/ MC-3 %; 4� M65 :F• MC-85 %' CON-2.9 .*•,, %i �•S\ MC-24 -#200-24 r� MG2B 5- jy 7!i CON-0.4 LL-26 \ CON-0.9 - - . P1-9 • -#200-88 _ _ %' E - i. 26/12 j!,-12/12 / �- -12/12 �'1 D P - 10 %: MC-0 ••••.•,, j' L 17/12 MC-20 13/12 �,;,-9/12 - E T %: -#200-39 MC-2 ;.�. DD-95 - T H - %; NP • ,/. DD-112 -#200-7 -#200-12 :'= MC-18 10 %: %6 ,�i MC-12 NP NP I7:1?. SW-0.0 - T N - •.. /' �- ;#:/ 18/12 F ,-7 V., • - N F E - �� ,/, pH-7.9 15-1 E T / 'It:, / CL00-0. 61 - E , j% •r4 R-860 T - %- %; , - - Gti 28/12 ``45/12 :2,-14/12 - -2p %• DD-112 , MC-17% :-27/12 20- . j: MG16 • %: / - 28/12 , • //Pr ^25 y� 1.i_ y• 50/11 e,/ — If // // - \ // - /'50/6 50/12 •••, // _30 .•:. ,•,, —13/12 — 1.. // — 30 —35 — —. 35— —40 40— • SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 8 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING N0.43 NO.44 NO.45 N0.46 N0.47 NO.48 ELEV.4863 ELEV.4865 ELEV.4856 ELEV.4917 ELEV.4928 ELEV.4906 • COV _ -0 T 0- - / /' • / - - 9/12 ./�-24/12 10/12 --.''--20/12 --20/12 -13/12 - • -5 /, OD-113 MC-2 • '/, MC-14 -#200-19 #200-2 5- rf;- SW-8.9 : NP : NP - •O 9/12 :-25/12 15/12 --35/12 r15/12 -15/12 O E - - E - 10 MC-2 T -#200-51 ::::. pH-8.2 10- P H - NP : CL-0.0002 - T R-3134 H N • • - N - 8/12 11/12 -32/12 -13/12 - F ''' F E -15 15- E E - T '/, i/ - E - • /, 7/ T - / - •-18/12 Kv '/, �/ 1&/12 - UC-25• .7k ii �/. '/. DD-108^� • �n tt ,/ MC-13 20- a - r j CON-0.4 - t4 '/. rc - 18/12— • on 6/12 \`37/12 r/ -28/12 - -25 .a '/ e/ 25- 8 /„.'/ - - 'F/. - 'F/ - // - '/ '/`33/12 - -30 '! 30 - —as 35- -40 40- • SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS EXPLORATORY BORING LOG FIGURE 9 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.49 NO.50 NO.51 NO.52 NO.53 NO.54 ELEV.4869 ELEV.4883 ELEV.4916 ELEV.4945 ELEV.4879 ELEV.4882 • -0 T 6 / \ • ty• • • - - / �� _ - / 12/12 • \'•- •••0/12 'z 12/12 14/12 ::.:T 12/12 ��, 11/12 - -5 / \ • •% MC-4 MC-15 DD-114 5- •.• � SW-2.5 4 SW-21 - • :- _ •�: 9 - E - 0 9 �'• 17/12 ..�7/12 22/12 32/12 :::-10/12 7/12 D P -10 • NR DD-97 ./ MO-8 DD-116 : MC3 E T - r ` MC-18 '/ -#200-77 MC-10 4200-3 10- P H - CON-0.4 '/ LL-33 SW-27 : NP T /, '/ PI-20 — H - I •/d •/ WS-c2.000 N — /d '/ pF48.1 — I 6/12 NR .// '/ CL-0.0073 N F /.. '/ R-371 7-13/12 - -15 / 22/12F E _ i' '� :1�:: 15— E T — • 0 i, MC-176 0�.. _ E — ,/d '/ SW-2.0 • - T - .5-8/12 6—20 ' • �� DO-99 / D0.116 MG110 — /, MC-11 -#20D28 p- - i / •/, — •/d — /, 50/6 r 15/12 — ,/25 i - - 25- ',� - // _ - //-12/12 50/3 35/12 -30 `. - 30 -35 35- -40 40- SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS • EXPLORATORY BORING LOG FIGURE 10 TEST TEST TEST TEST TEST TEST BORING BORING BORING BORING BORING BORING NO.55 NO.56 NO.57 NO.58 NO.59 NO.60 ELEV.4872 ELEV.4869 ELEV.4959 ELEV.4943 ELEV.4899 ELEV.4887 • r-0 '7v - 0 / T / 9% - / !% - 25/12 -15/12 tt 11/12 20/12 33/12 '-11/12 - -5 DD-98 `:': p0.94 / D0-107 % DD-94 MC-11 MC-5 / MC-7 {.%. MC-5 5- - SW-0.3 CON-5.1 / CON-2.5 (-* CON-5.3 - - / /.% / !% - / •¢% E - 8112 •:-16/12 -13/12 12/12 / 9/12 i'-12/12 - p -10 • MC-5 • DD-98 4 DD-109 10- P T -#200-7 / MC-6 MC-17 T H NP / CON-7.5 CON-0A - H / _ - I r/ - 17/12 I N �/ / DD-101 - N 10/12 '/ 13/12 / MC-19 FE ^ 15 D0.103 r/ D0.113 / SW-0S F MC-23 r/ /10-12 / -#200-78 . 15- E E - CON-0.3 • r/ SW-0.0 / NP _ E T r/ / WS-<50 T e : r/ / PH-7.8 — I'' '/ / CL-0.0009 — '/ / R-1237 9 — •—W12 —18/12 '/ / 5/12 - 0 • r/ / 0- _-20 0.8 '/ / 20- • - _ 7 r/ / /r / • / - - '/r r/ / - /• / / 10/12 /r r/ 22/12 / 11/12 - 25 I/6 '/ / ':.: /. Yj' 25— // — // _ • // // — —1W12 e/ — ^14/12 - -30 •.. . iL 30 - —35 35- -40 40- • SEE FIGURE 12 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS EXPLORATORY BORING LOG FIGURE 11 I 7 ZF,! 9. 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V ., ! ! !4ff • OW... -2 WWWF I I I I I i I I I 1 I I I I I I I I I I I I 1 I I 1 I I I I 1 1 I I I 1 I I 1 1 I a a a a 8 g4 -Ii eI W Fill gai F- i g I , #il€ all g S thi .th£d! z I II cos • rig I I I I I I I I I I Tim I I I I I R I I I I A I 1 I I R I I I I I I I I -I S On,-I -i rWW1- \ . _i la 0 | 1 ■ — —.---L__ wi | , ` ' | § " - - • / li I | si E - - - - ) | � ! | • , 1 P | ; § | | | 2 - - - - i - -7 i I I - - � | ! § , g . ;• ; ■ • i .r_ - - p nom / i _/-| , I I ! , I | § ; § t • - - � � •- 2 . f t | | | - - - ;| ' |_Art = | • ' �� ! g ——NENE Z—§ — — � ' zii i 3 P , 1 8 ` , [ e • Loll • .v 1 . • I I i L-, r.. _ r ; g 4. : di 11 - ter- - W - • Lip - iR \ljh I VI • • 1 02 i •• $• S r _ _ —J • OP KVA i J 3. r •da • 1 il €° I I 1�1a ;s • APPENDIX A LABORATORY TESTING SUMMARY OF LABORATORY TESTING TABLE A-I SWELUSETTLEMENT TEST RESULTS FIGURES A-I THROUGH A-29 GRADATION ANALYSIS TEST RESULTS FIGURES A-30 THROUGH A-50 • • Gateway American Properties.LLC Hands Farms Project Number 80835 0 3. . 4 !} - ( . � • I-I : . 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PRESSURE BECAUSE OF WETTING 2 LiLuu y 1 0 f g 1 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 106 PCF LOCATION TEST BORING NO.14 @ DEPTH OF 19.0 MOISTURE CONTENT 22 % 5 • 4 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 LiLuu N 1 _ 0 fuI g N • 2 WATER ADDED 3 4 5 100 1.000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 109 PCF LOCATION TEST BORING NO.16(d DEPTH OF 9.0 MOISTURE CONTENT 18 % • SETTLEMENT- SWELL TEST RESULTS FIGURE A-2 VA\ A. G. WASSENAAR, INC. GEOTEQINcAL WN$ILTNf15 5 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING LLJuU N 1 ..74/ 0 1 co • 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 16000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 102 PCF LOCATION TEST BORING NO.17 @ DEPTH OF 19.0 MOISTURE CONTENT 23 % 5 • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING y 1 ti 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 SAMPLE DESCRIPTION SAND,SLIGHTLY CLAYEY DRY UNIT WT. 112 PCF LOCATION TEST BORING NO.18 @ DEPTH OF 4.0' MOISTURE CONTENT 10 % • SETTLEMENT- SWELL TEST RESULTS FIGURE A-3 'V A. G. WASSENAAR, INC. GEOTEQINICAL CONSULTANTS 5 • 4 3 I SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �Ju 1 X 0 g N 2 • WATER ADDED - 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY,SILTY DRY UNIT WT. 105 PCF LOCATION TEST BORING NO.18 a DEPTH OF 9.0' MOISTURE CONTENT 21 % • 5 4 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING2 J g1 pl. 01//// 2 N • 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 120 PCF • LOCATION TEST BORING NO.21 @ DEPTH OF 9.0' MOISTURE CONTENT 10 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-4 `V A. G. WASSENAAR, INC. OEOTECHNMAL CONSULTANTS S I 4 3 I SETTLEMENT UNDER CONSTANT 2 / _ PRESSURE BECAUSE OF WETTINGLiu f gi 0 w f gw 1 m 2 _ WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 119 PCF LOCATION TEST BORING NO.22 Q DEPTH OF 9.0' MOISTURE CONTENT 7 % . 5 I 4 I — 3 — I SWELL UNDER CONSTANT PRFSCI IRE BECAUSE OF WETTING 2 1 iL 0 _____________7 w 1 I . co 2 I WATER ADDED 3I 4 - I 5 I 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION WEATHERED CLAYSTONE DRY UNIT WT. 107 PCF • LOCATION TEST BORING NO.23 @ DEPTH OF 14.0' MOISTURE CONTENT 23 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-5 ®W A. G. WEASSENAAR, INC. GEOTE0NNIGI CGNSU,TMTS 5 _ k • 4 - 3 SWELL UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING J g 1 414 g CO 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT 109 PCF LOCATION TEST BORING NO.24 @ DEPTH OF 24.01 MOISTURE CONTENT 18 % • 5 4 3 SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 N�u 1th I - X 0 u!!! g 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SLIGHTLY CLAYEY DRY UNIT WT. 98 PCF • LOCATION TEST BORING NO.26 @ DEPTH OF 9.01 MOISTURE CONTENT 24 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-6 vIlk\ A. G. WASSENAAR, INC. DEOTEORNCK CCNSUITNAS 5 • 4 • 3 _ I SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING 1 z 0 WWI 1 rn 2 WATER ADDED 3 4 - _ _ 5 • 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 93 PCF LOCATION TEST BORING NO.26 @ DEPTH OF 14.0' MOISTURE CONTENT 27 % • 5 4 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 �i 1 tit uu!! h 2 WATER ADDED 3 • 4 5 - 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 101 PCF • LOCATION TEST BORING NO.27 6 DEPTH OF 14.0' MOISTURE CONTENT 7 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-7 ®' A. G. WEASSENA RR, INC. GEOTEG W IUL C0NSI.LTNI/6 5 • I i 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING 1 X 0 w r N 2 � WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 102 PCF LOCATION TEST BORING NO.28 @ DEPTH OF 4.0' MOISTURE CONTENT 4 % • 5 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING F, g 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 104 PCF • LOCATION TEST BORING NO.28 @ DEPTH OF 9.0' MOISTURE CONTENT 10 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-S ®V A. G. WASSENAAR, INC. GEOTECHNKX CONSULTANTS 5 1 4 I • 3 / SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 1 0 1 Jam. 2 WATER ADDED J • 3 _ 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION WEATHERED CLAYSTONE DRY UNIT WT. 95 PCF LOCATION TEST BORING NO.28 @ DEPTH OF 192 MOISTURE CONTENT 21 % • 5 4 3 / SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING2 TJ9u! 0 1 L 0 W WW� 1 co 2 / WATER ADDED 3 - 4 _ 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SILTY DRY UNIT WT. 92 PCF • LOCATION TEST BORING NO.30 @d DEPTH OF 4.0' MOISTURE CONTENT 19 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-9 NW A. G. WASSENAAR, INC. WIICAL caInTmTs 5 • 4 3 NO CHANGE UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING y 1 i2 0 w 5 1 N 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 108 PCF LOCATION TEST BORING NO.30 @ DEPTH OF 19.0' MOISTURE CONTENT 21 % 5• I 4 3 / SETTLEMENT UNDER CONSTANT p PRESSURE BECAUSE OF WETTING y 1 0 N 2 WATER ADDED 3 • 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SUGHTLY SILTY DRY UNIT WT. 100 PCF • LOCATION TEST BORING NO.31 @ DEPTH OF 4.0' MOISTURE CONTENT 5 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-10 NV\ A. G. WASSENAAR, INC. GEOTECNNICK CONSIATMITS 2 1 0 SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 1 Liu y 2 3 g 4 rn 5 WATER ADDED 6 7 • 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,VERY SILTY DRY UNIT WT. 101 PCF LOCATION TEST BORING NO.32 )DEPTH OF 4.0' MOISTURE CONTENT 3 % 5 4 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 1 F 0 E 1 2 WATER ADDED • 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SUGHTLY SILTY DRY UNIT WT. 103 PCF • LOCATION TEST BORING NO.34 @ DEPTH OF 4.0' MOISTURE CONTENT 4 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-11 `V A. a WASSENAARTA , INC. GEOTECHMCALL CONSILNTS 5 L • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING w w X 0 co ' 2 WATER ADDED - 3 4 • 5 100 1,000 APPUED PRESSURE-PSF 10.000 100,000 SAMPLE DESCRIPTION CLAY,SILTY DRY UNIT WT. 114 PCF LOCATION TEST BORING NO.34 @ DEPTH OF 9.0' MOISTURE CONTENT 11 % • 5 I 4 3 II SWELL UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING co z o co 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 • SAMPLE DESCRIPTION CLAY,VERY SANDY DRY UNIT WT. 121 PCF LOCATION TEST BORING NO.34 @ DEPTH OF 14.0' MOISTURE CONTENT 8 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-12 Ilk A. a WASSENAAR, INC. GEOTECHNIG .CONSULTANTS S _ I 4 I a 3 SETTLEMENT UNDER CONSTANT 2 .- PRESSURE BECAUSE OF WETTING I1 tj 0 w 1 w 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 107 PCF LOCATION TEST BORING NO.35 @ DEPTH OF 4.0' MOISTURE CONTENT 5 % • 5 1 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 1 g 0 - W 1 co 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,VERY SANDY DRY UNIT WT. 100 PCF • LOCATION TEST BORING NO.35 @ DEPTH OF 19.0' MOISTURE CONTENT 24 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-13 ®� A. G. WASSENAAR, INC. GEOTEQII4 ALCW1$1ATN(f$ 5 • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING 1 LI 0 1 • 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPIIUN SAND.SUGHLTY SILTY DRY UNIT WT. 116 PCF LOCATION TEST BORING NO.36(d DEPTH OF 4.0' MOISTURE CONTENT 9 % • 5 4 3 SETTLEMENT UNDER CONSTANT 2 / PRESSURE BECAUSE OF WETTING 1 I o — 79/ f M 2 WATER ADDED 3 • 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100000 SAMPLE DESCRIPTION SAND.SLIGHTLY CLAYEY DRY UNIT WT. 106 PCF • LOCATION TEST BORING NO.39 @ DEPTH OF 4.0' MOISTURE CONTENT 3 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-14 `V A. G. WASSENAAR, INC. GEOTECHMCAL CO 4SATMTS 5 • 3 I NO CHANGE UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 0 1 0 E 1 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SLIGHTLY CLAYEY DRY UNIT WT. 112 PCF LOCATION TEST BORING NO.38 @ DEPTH OF 19.0' MOISTURE CONTENT 16 % . 5 4 3 I / SWELL UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �jl N 0 I E 1 co ------7D2 WATER ADDED 3 4 5 - 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SILTY DRY UNIT WT. 112 PCF • LOCATION TEST BORING NO.39 @ DEPTH OF 9.0' MOISTURE CONTENT 12 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-15 V A. a WASSENAAR, INC. GE0TEOINcAL CONSUUAMS 8 • 7I i 6 I SWELL UNDER CONSTANT 5 PRESSURE BEI-26 LCF OF WETTING 4 ae 3 w�+ W 2 N 1 I WATER ADDED 0 1 2 100 1,000 APPLIED PRESSURE-PSF 10.000 100,000 SAMPLE DESCRIPTION CLAYSTONE,SILTY DRY UNIT WT 112 PCF LOCATION TEST BORING NO.39 @ DEPTH OF 19.0' MOISTURE CONTENT 17 % • 5 I 4 I 3 I - SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �u N 1 X 0 tt�44 1 co • 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 94 PCF • LOCATION TEST BORING NO.40 @ DEPTH OF 4.0' MOISTURE CONTENT 24 % SETTLEMENT -SWELL TEST RESULTS FIGURE A-16 `V A. G. WASSENAAR, INC. c€0TEO IICALCOPG LTAM5 5 E r 4 3 • SWELL UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING NLiu ' ae 0 f co /r 2 • WATER ADDED 3 I 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SILTY,SLIGHTLY SANDY DRY UNIT WT. 85 PCF LOCATION TEST BORING NO.42 @ DEPTH OF 4.0' MOISTURE CONTENT 28 % 5 • 4 3 NO CHANGE UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 J X • f 0 6 h 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 95 PCF LOCATION TEST BORING NO.42 @ DEPTH OF 9.0' MOISTURE CONTENT 18 % • SETTLEMENT- SWELL TEST RESULTS FIGURE A-17 `V A. a WASSENAAR, INC. cEorcawlGlL Ca4 r rs 9 6 • 8 7 SWELL UNDER CONSTANT 6 PRESSURE BECAUSE OF WETTING g5 w 4 3 2 WATER ADDED 1 , 0 1 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 113 PCF LOCATION TEST BORING NO.44 @ DEPTH OF 4.0' MOISTURE CONTENT 14 % • 5 4 3 I SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �u N 0 1 • co 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100.000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 108 PCF • LOCATION TEST BORING NO.47 @ DEPTH OF 19.0' MOISTURE CONTENT 13 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-18 ®v A. G. WEASSENAAR, INC. GEOTWHNM,AL CONSULUMS 5 • 3 I / SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 L:u N 1 1- 0 _. z w E 1 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 105 PCF LOCATION TEST BORING NO.49 @ DEPTH OF 4.0' MOISTURE CONTENT 18 % • 5 4 3 I SETTLEMENT UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 I D E 1 2 WATER ADDED - 3 • 5 100 1,000 APPLIED PRESSURE-PSI' 10,000 100,000 SAMPLE DESCRIPTION SAND.CLAYEY DRY UNIT WT. 97 PCF LOCATION TEST BORING NO.50 @ DEPTH OF 9.0 MOISTURE CONTENT 18 % • SETTLEMENT- SWELL TEST RESULTS FIGURE A-19 ‘1,1\ \ A. G. WASSENAARGGNSI&T , INC. GE0TECFNlICK If5 5 • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING J I flT . in 2 WATER ADDED 3 4 • 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SILTY DRY UNIT WT. 99 PCF LOCATION TEST BORING NO.50 La DEPTH OF 19.0' MOISTURE CONTENT 24 % • 4 3 SWELL UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING 1 g 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 99 PCF • LOCATION TEST BORING NO.51 P DEPTH OF 4.0' MOISTURE CONTENT 4 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-20 iwt\ A. G. WASSENA RR, INC. GE0TED PAGE c0NS%LTMrt3 5 • 3 SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 • �N N 1 ale w 1 . N 2 WATER ADDED 3 4 - 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 106 PCF LOCATION TEST BORING NO.51 @ DEPTH OF 14.0 MOISTURE CONTENT 17 % . 5 4 3 • I SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 • G w W 1 co 2 WATER ADOED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,VERY CLAYEY DRY UNIT WT. 116 PCF LOCATION TEST BORING NO.52 @ DEPTH OF 9.0 MOISTURE CONTENT 10 % • SETTLEMENT- SWELL TEST RESULTS FIGURE A-21 `V\ A. G. WASSENA RR, INC. OEOTECHNICAL CONSULTANTS 5 • 4 3 I SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 N 1 0 WWu g CO 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAYSTONE,SANDY DRY UNIT WT. 116 PCF LOCATION TEST BORING NO.52 @ DEPTH OF 19.7 MOISTURE CONTENT 11 % • 5 4 3 I SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 g1 a 0 WWf 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION FILL-CLAY,SANDY DRY UNIT WT. 114 PCF • LOCATION TEST BORING NO.54 @ DEPTH OF 4.7 MOISTURE CONTENT 15 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-22 `V A. G. WASSENAAR, INC. 5 4 - - I • 3 I SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING y 1 _ m g 1 w 2 WATER ADDED 3 .- I - 4 - 1 . 5 I 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 103 PCF LOCATION TEST BORING NO.55 @ DEPTH OF 14.0' MOISTURE CONTENT 23 % • 5 I 4 - 3 I / SWELL UNDER CONSTANT 2 _ PRESSURE BECAUSE OF WERWG d I 0 E 1 w m 2I WATER ADDED 3 4 • ' I 5 I 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,SILTY DRY UNIT WT. 98 PCF • LOCATION TEST BORING NO.56 @ DEPTH OF 4.0' MOISTURE CONTENT 11 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-23 `V A. a WASSENA RR, INC. OE01tG* CALCOMSLITNtf9 3 • 2 1 SETTLEMENT UNDER CONSTANT p PRESSURE BECAUSE OF WETTING 1 ae 2 �w+ W 3 GO 4 WATER ADDED 5 6 7 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,VERY SILTY DRY UNIT WT. 94 PCF LOCATION TEST BORING NO.58 @ DEPTH OF 40 MOISTURE CONTENT 5 % • 5 4 3 NO CHANGE UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTINGg 1 0 co 2 II WATER ADDED 3 4 5 100 1.000 APPLIED PRESSURE•PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 113 PCF • LOCATION TEST BORING NO.58 @ DEPTH OF 14.0' MOISTURE CONTENT 12 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-24 `W A. G. WASSENA RR, INC. GEOTECIIMOAL CONSULTANTS 5 F 4 I S 3 . . I • SETREMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING J N 1 _ e m 0 i ----71 _ co 2 WATER ADDED 3 i 4 5 100 1,000 APPLIED PRESSURE-PSF 10.000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 107 PCF LOCATION TEST BORING NO.59 @ DEPTH OF 4.0 MOISTURE CONTENT 7 % 1 • 0 -----7 -I .. 1 I / SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETf WG N 3 t% 4 .#77 — _til 5 co 6 WATER ADDED 7 8 • 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,VERY SANDY DRY UNIT WT. 98 PCF • LOCATION TEST BORING NO.59 @ DEPTH OF 9.0 MOISTURE CONTENT 6 % SETTLEMENT-SWELL TEST RESULTS FIGURE A-25 `'\ A. G. WASSENA , INC. GEm .unsAR 5 I t • 4 3 /// SWELL UNDER CONSTANT 2 / PRESSURE BECAUSE OF WETTING F ae k 0 • g • 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SILT,SANDY DRY UNIT WT. 101 PCF LOCATION TEST BORING NO.59 go DEPTH OF 14.0' MOISTURE CONTENT 19 % 4 • 3 2 SETTLEMENT UNDER CONSTANT 1 PRESSURE BECAUSE OF WETTING 0 w w 2 W 3 WATER ADDED 4 5 • 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 94 PCF LOCATION TEST BORING NO.60 @ DEPTH OF 4.0' MOISTURE CONTENT 5 % • SETTLEMENT-SWELL TEST RESULTS FIGURE A-26 A. G. WASSENA RR, INC. GEOTECHMCN.C0PcI LTIMS 5 L 4 I 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING N 1 . f o z w g N 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE.PSF 10,000 100,000 SAMPLE DESCRIPTION SAND.CLAYEY DRY UNIT WT. 109 PCF LOCATION TEST BORING NO.60 @ DEPTH OF 9.0' MOISTURE CONTENT 17 % 5 • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING 0 1 4 0 z w 1 to • 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,VERY SANDY DRY UNIT WT. 113 PCF • LOCATION TEST BORING NO.61 Q DEPTH OF 9.0' MOISTURE CONTENT 9 % SETTLEMENT - SWELL TEST RESULTS FIGURE A-27 `V A. G. WEASSENAAR, INC. 6EOTEGt W IGL CONSULTANTS 5 1 • 4 I r. 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �u N 2 0 w 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 101 PCF LOCATION TEST BORING NO.62 @ DEPTH OF 9.0' MOISTURE CONTENT 20 % 5 • 4 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING J 0 1 0 1 N • 2 WATER ADDED 3 4 5 100 1,000 APPUED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 99 PCF . LOCATION TEST BORING NO.62 @ DEPTH OF 19.0' MOISTURE CONTENT 24 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-28 `it\ A. a WASSENMR, INC. GEOTEQ W IGLL CONSULTNns 5 • 3 SETTLEMENT UNDER CONSTANT 2 PRESSURE EE'rAt$E OF WETTING 3 1 a g 0 2 WATER ADDED 3 • 4 - 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 101 PCF LOCATION TEST BORING NO.83 @ DEPTH OF 4.O MOISTURE CONTENT 19 % • 5 4 3 I SETTLEMENT UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING �u a 1 0 w uuf co 2 WATER ADDED • 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 101 PCF • LOCATION TEST BORING NO.63 @ DEPTH OF 14.0' MOISTURE CONTENT 24 % SETTLEMENT- SWELL TEST RESULTS FIGURE A-29 `V A. G. WASSENAAR, INC. GEOTECHNCM.CONSULTMIS ) • HYDROMETER ANALYSISSAND SIEVE ANALYSIS t MAY(PLASTIC)TO SILT P10N.plASRG) 1 'IL®49A ICOARSE F99i GRAVEL COME S IN MILLMEIB16 .001 .000 .005 .000 .019 .037 .0774.149 RI • RAWER OF .590 1.10 py lR 9.52 19.1 a1 702 122 WO 100 _— ___-____.____ �- 0 10 SO I/ 93 O A T 30 0 LU Z -- LI" 50 Le i lc 0_ ,° 70 OO.. so / 50 10 W 0 1rOM 455JL limn SO.ri019 min 4 R Inn 9200 0100 #50#40130 #15 No#9 14 Mr R1 1.1? S PP I' TIME READINGS I U.S.STANDARD SERIES I CLEAR SOUAREOPFNINGS LOCATION TEST BORING NO.1 P DEPTH OF 4.0' GRAVEL 0 % UOUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 88 % PLASMA"(INDEX NP CLASSIFICATION SILT&CLAY 12 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NON-PLASTIC) COWLES FINE ' W 'COARSE FINE I IN MILLAIETERS X01 .002 .005 .009 .019 .031 .074DIAMETER14OF 997TH,I LII tO9 4.75 9.52 19.1 911 792 127 209 100 - 0 __ BO 10 _ —7- b - 20 _ (p o 70 __—— r.____._____ 80 Z I _ t __ W 40 GO • 40 ' �__ Z W LLI ' .-M---......_________•_ _ b U a 11: r4 f 1 20 0. -r- 00 to - ._.- =. ._- • 90 4 0 251w 71r pain 19 m1. 4min 1min 9200 #100 050940/30 919 COOS #4 3? W 1./? S PP P100 45 min 15 min ME RFMHGS I U.S.STMDMDSEP2E.4 I CLEAR SQUARE OPENVA S ' LOCATION TEST BORING NO.2 @ DEPTH OF 9.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 95 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 5 % • GRADATION TEST RESULTS FIGURE A-30 `V A. G. WASSENAAR, INC. GEOTECItMCN.CDN5ULTAMB I HYDROMETER ANALYSIS SIEVE ANALYSIS 0 CLAY(PLASTIC)TO SILT IN0144 IC) SAND I GRAVEL ASI PINE I Um°M locums! FOIE I COARSE ICOe9lEs DEIC.001 .002 5 .000 .019 .0.31 .017�OF�ICLE 5 20 MI(1 KI 1.19 238 4.70 9.52 10.1 50.1 TOY IV EGO 103 __— —-- ____ - a —n-- — 0 10 k 20 — _ .o a w — x 40 SO O6 G. _-- Gtr — A 0 — 90 :2.r.-- 10 ' 90 1 °4S II Tk °O min 19 mil 4min Imin 1200 #100 I50140030 III lion #4 3Iff WC1-1A: T sr ,'101 45 min I51nia i 71AIE READINGS I U.S.STANDARD SERFS I CLEAR SOUNIE OPENINGS LOCATION TEST BORING NO.3 Q DEPTH OF 9.0 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SUCH LY SILTY SAND 93 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY T % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SET(NON.PIASTIQ FIND GRAVEL FINE I MEOW ICD+RSE FINE I come .Es DIAMETEFI OF .001 .002 .005 9 219 .037 .00 ES 4.79 922 10.1 30.1 402 127 200 100 --- -_ =-- - .../.4 ---- 0 —L—_ 10 SO - 1T—T—_ , I' , _ 20 7). m ---- _:___=`-_-_ — —I 3o w a —'--'—" — 7. - ------- ---- p I0 tl --- _ —._ '— _ SO (I Uo.I —..-- _ - — ----_�._.=F--._ W 70 0. ?D -- ------ so 10 _— --._ -- -___-—__—___--r_—- h—_--a. 90 251a 1SSmf Thn SO min 19 min Orin fain #200 0100 •50#40130 III I10q #4 31f ET ?NT T sr f100 train I TIME READINGS I U.S.STANDARD SERIES I CLEAR SQUAREOPEMIGS LOCATION TEST BORING NO.4 a DEPTH OF 1417 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 91 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 9 % • GRADATION TEST RESULTS FIGURE A31 WI\ A. G. WASSENAAR, INC. LIcowa1Nc.1L 1x9GJJNRS 0 HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SLT(NON-PLASTIC) SAND GRAVEL FIB I DEOAN ICOMM FINE I COOME COBBLES DIAMETER OF PARTESE IN MILLIMETERS .001 .002 .005 .000 019 097 .074 .149 590 1.19 2.30 4.76 9.52 161 961 70.2 127 200 100 — so +—.— , ___ __ __ 0 �� _ _ 10 M / 1 to 11) _Z -- —. 20 CI w _— Z • 40 R UI f0 a 30 — w A a ao 90 to —__T _ • - 90 1 tr. 00 Min 19 min 4min 1min 0200 AIM !00#4000 019 411046 64 M17 WV 1-117r rr r/ao I TIME READINGS I U.S.STANDARD SERIES I CIFAm SQUARE OPENINGS LOCATION TEST BORING NO.5 @ DEPTH OF 9.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 95 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 5 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NONFIASRC) SAND GRAVEL Me I ME (COARSE NNE I COARSE COBBLES NIM .00 00 1 .002 .005 9 .019 007 .01DOMEIER OF PARTICLE .149297 000 1.19 2.31 4.76 952 161 961 702 191 200 100 —._—_ - --__—. — _ 0 AO —_—_—_ 1"-- .—_ —_ 10 p — 20 • 70 Z .: — .-_=_"'- — to en 60 k 40 aSCI _._.� _— -- _ aGl a — 50 a 16 40 — -- — _.-.7—__L____, 6 SO cc 70 CI. to 10 -_-- --- . — —` 90 o =__ _= ---- 25, 1lttin SO min 19mn 4min 1min 0200 01000100650 44 0420 619 610IS 04 9A1' 9/4' 1.417 r rr r1Op 761E RFAOOi[i9 I U.S.STNILWD SEALS I CLEAR SOIINIEOPDa _ LOCATION TEST BORING NO.6 @ DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 95 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 5 % GRADATION TEST RESULTS FIGURE A-32 `W A. a WASSENAAR, INC. SEOTECNNCAL CONSILTANIS •HYDROMETER ANALYSIS SIEVE ANALYSIS GAY(PLASTIC)TO SILT(NON-PLASTIC) I SAND I ( VEL NNE I MOW IMASSE FINE 1 COARSE I MEWILES .00f L°2 .005 .000 .019 .037 .07D61Ei.149 2417 OF � 1.19 2.35 4.76 9S2 19.1 301 762 127 200 100 W - tie -_ — - - Gam-nitEMBE= _ 0 so =M-i=ce �EME0 ME �� ---a 20 O 70 —��_�� i��NM ��nn 60 Cl 2 40 m_��m Min'�__n� �� a 1:,5 40 Cis"—=��=MGINI�NNeas��_l_��_I•�_ 40 0 cc Cl- 30 MIllalaallninaiialarliiniIMEnErInasnnilli 70 P2 miaismiii Tin rissaimii ------ -------- o 415, , limn pain 19 Mn 451 1 Si 1200 1100 950/40/30 116 11000 #4 SAT SIC 1-117 r rr r100 I 7151E READINGS I O.S.S&MDMD SERIES I [OEM SQUARE OPENINGS LOCATION TEST BORING NO.B a DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 98 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 2 % a I HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(N0 1-P ASTLC) I AND GRAVEL FINE 1 ICOA L I TINE I COARSE I crow GC IMAM 001 -002 005 .000 .019 .037 07 OF PARTICLE MO 1.19 236 4.76 9.52 191 ill 762 127 200 100 __ 0 — 10 — --- T 60 ----------- -.__ - — _ _ —z —= .n _ = _— 20 CI 70 - — z ---— 90 O �i a. -- -- ''_ _ 40 la 50 I--- -' IL _ 50 LE 40 .. . -- —i —Y V 0¢j _— _ m, p 10 -- - - a 25s11*, I5 ii*,14 60 m1n 16 mN 4min 10An 7200 1100 ES)a4WSp •16 store #4 Mry4' 1-1? r re• rfao I TIME READINGS I O.S.STANDARDSERIEi I CLEAR SOUMEOP@ANDg LOCATION TEST BORING NO.9 @ DEPTH OF 9.0 GRAVEL 0 % LIQUD LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 90 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 10 % • GRADATION TEST RESULTS FIGURE A-33 `V A. G. WASSENAAR, INC. OEOTECHMC LL CONS*KTANTS • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NON-HASTIC) SANG GRAVEL COBBLES NNE I MEOW ICwnsE FINE I COARSE DMMEIER OF PARTICLE IN M.LEf96 .001 .002 .006 DM .019 037 074 .149 267 590 1.19 2.39 4.76 952 16.1 30.1 762 127 200 100 0 80 10 p —�— 4 20 O 70 _ 1 30 O ? Z 40 AC — m ¢ ¢ 40 . _— _ ao 30 IL 70 I 10 20 io o no At66 limn WnS It min 45, 1min 1200 6100 6W 990630 616 61099 04 6A' N4' 1.1? r rr r I TTIE READINGS I U.S.STANDARD SFl1Fb I CLEAR SOLHBEOPFNINGS LOCATION TEST BORING NO.10®DEPTH OF 14.0 GRAVEL 0 % LIOUID LIMIT NV SAMPLE DESCRIPTION_ SAND.SLIGHTLY SILTY SAND 93 % PLASTICITY INDEX NP CLASSIFICATION SILT 8 CLAY 7 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(RUSTIC)TO SLT(NON-PLASTIC) SAND GRAVEL CODDLES FINE I lam ICOA6E FIE I COARSE OIA9IETFA OF PARTICLE IN MUMMERS .001 .002 006 MN 016 037 ON .140 .297 590 1.19 2.36 4.75 9.52 19.1 NIT 762 127 200 100 _ 0 go r--- -- -_---_ — .— _ 10 so 0 Z fo — _—__.._C-- --.2__-- _ S° w Si _ _ _�- z1.. @ 40 W __ _ _ _ cc _ _ _ 00__ _ Z 40 ILI _.—� Ci. 30 70 a _1__—___ —__CT:__— _ _ __ - —� _ _— __ __ —__ --_—`__— 00 20 _10 __.___ ___ __._ — — — — O —_ __-_=_—_:=1---:--------0 100grl 11141 60 min 19 min i s, 1 min 6270 6100 630 640030 616 61099 N N 3M 1-1tt S r r r I TIME READINS I U.S.STAAMO SERIES I CLEAR SQUIRE OIH04OS LOCATION TEST BORING NO.11 P DEPTH OF 9.0 GRAVEL 0 % LIQUID UNIT NV SAMPLE DESCRIPTION SAND,SUGHfLY SILTY SAND 92 % PLASTICRY INDEX NP CLASSIFICATION SILT&CLAY 8 % • GRADATION TEST RESULTS FIGURE A-34 V A. a WASSENAAR, INC. OEOTECHMCAL C0NSIATN/TS HYDROMETER ANALYSIS I SIEVE ANALYSIS • I CLAY(PLASTIC)TO SILT NON.PIASTICj SAND GRAVEL FINE I fail 'COARSE In 1 cavvz I COBBLES MAUER .001 .050 .095 .000 019 077 07 .149 227 OFP 5(0 1.�1 230 420 9.52 19.1 561 702 127 200 100 40 emelaiianne aT/'taliiii numaiiMt•ietis 20 z === m ;:=—.. -===____ 70 0 -. 50 —Era-I--� Falls= r---C-a:- z 2 ego—as Falls=— �ae--sMem= p c. c. i� _i_ii �i!! So ��cr _ '° l��= —i -a---e---- rasp■ 70 29 --i---itiniliii---_i�■i_iiii w to al imm -% liil!:ci-__aaii 90 o IV ,lit 40 min 195i1 4mm 1ni1 0200 1100 050/40970 CO /COO IS 3* 3W 1-1/2 r sr r100 a 1I TINE READINGS I U.S.STANDARD SERIES I CLEAR 8DIIAREDPElIN09 LOCATION TEST BORING NO.12 Fs@ DEPTH OF 9.0 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 94 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 6 % • I HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NON-PLAST1C) I FSE I SAND DRAVEL I lam 'COARSE' FIE I 030115E IWEIBIES INAMEIEN OF PARTS= .001 .002 .005 .009 019 .07 .074 .149 297 .590 '.193 230 4.79 9..2 19.1 75.1 702 127 200 100 __ .--_ - I ��_ 0 -_ 1 I -- _ 10 SO ��-. :_—__ . -- — _ 20_ _ 70 == - -- __ 20 0 00 _------- 11J -t p 211 a 50W �_��-._- I gt -- 50 0 40 CC -----'---'—.-_: -.C_:2=7: __------C.2-_- _ So O 5 _- _ -- T_---r- _. --- 79 a _ -- — 20 ao 10 — — _ --L- _--__-_.-- _.- ___ W 0 -_-_ - __ .— -___________L_ _ —RS77 7M CO Mn 19 mil Oat 1min 1200 1100 050040970 III 010NI N y0' 3W 1.112' r Sr r1� l 15mn I TIE REAOINCS I U.S.STANDARDSERES I CLEAR SQUARE OPENINGS LOCATION TEST BORING NO. 13 @ DEPTH OF 9.60 GRAVEL 0 % LIQUID UNIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 95 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 5 % • GRADATION TEST RESULTS FIGURE A-35 'V A. a WASSENAAR, INC. OEOIECIt CM.CONSIATANTS 0 HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT MPLASTIC) SAND mow' 01'F COBBLES NE I MORN I CCV4ISE FINE 1 COARSE 7 PART=IN MUMMERS .001 .002 A m 0 06 A19 All .074 .AM AZit .590 1.19 2.39 4.70 9.52 19.1 55.1 709 127 900 100 0 -�� o ---- _ --— to NI -- , • --- ; ---_ 20 ----- - —====7-'--._- — p to __—_—_ --__ —_ —___ --____-- 2 30 a tu 0 co so CL� so it �Ul U .4IA W - , 0 JO — W __ _ _ 70 d 7. / — O 10 W 0 ttm l7kini 00 min Gain 4ait 100n .200 •100 #50140230 916 DIM94 3/0• 0M 1-11 r rr r100 I TOTE IIF.ADNOS I US.STANDARD SERIES I CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.14 Q DEPTH OF 4.O GRAVEL 0 % UOUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 90 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 10 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT VON-PLASM D GRAVEL FNE I OW 'COARSE FIE 1 COARSE COBBLES A01 A07 .005 000 019 007 .7OLAE.1 OF PAI.797 FAN Y 1.19 011 9IE62.30 4.76 9.52 19.1 36.1 782 127 200 100 __ _ .. / 0 60 10- OD Z 70 --___—_ _ 90 W 40 R • CU 11cc b al ii. 20 60 10 o 4553w 17.k.n 9011* 19 nit Own lain .200 1100 .10140020 Ill 41019 04 Vr W 1-1/7' r Fir I 7OE READINGS I U.S.STANDARD SIRES I GEAR SQUARE OPENINGS - LOCATION TEST BORING NO.15 @ DEPTH OF 14O GRAVEL_ 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLGHTLY SILTY SAND 94 % PLASTICITY INDEX NP CLASSIFICATION SLT&CLAY 6 % • GRADATION TEST RESULTS FIGURE A-36 `V\ A. G. WASSENAAR, INC. GEOIECHNICNL CONSIATNOS HYDROMETER ANALYSIS SIEVE ANALYSIS . AY(PLASTIC)TO SILT(NON PLASTIC) SAND GRAVEL CL E I TI®MN ECOARSE FlNE I COHSE C08BlES FINE DMAIOER 001 002 .005 .000 019 .037 .074 OFD��0��235 4.75 952 19.1 WU 752 127 200 1p 0 Er._ SO — _— _ _ . 10 p — go 0 m -- Z '— p p us p ---- Q — _ -- - , - — I W ' _ p a so 1 0 40 1 10 t3 w ffi a 90 J — O. _ _ -T m a p - 00 10 - _ 00 2025511r — #Smin 15m~In 00 m, 19 Mt 4min 1min #700 #100 OM MEOW Mt 010 OS #4 W SW 1-12 r VC r1°° 11EREA091(L9 I U.S.STAPAWp0EIES I CLEAR SQUARE OUJIS LOCATION TEST BORING NO.17 @ DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 92' % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY B % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT MN-PLASM SANG GRAVELMN-PLASM FINE I MEOOM Lamm HIE I CWASE COBBLES .001 A02 ,p5GAMMA OF PARTICLE H 7elmETme 000 .019 .057 .074 .1p 21 .00 1.19 259 4.79 9.52 19.1 301 702 127 200 100 0 - --_ _ , 10 —__._ - —go 7.— __` 0 70 — p c - 2 W iii oo co a. -- , p 9D C 40 -- ___-`- _ ' __ 70 0. — _- - _—__---•' —__ m d - 90 0 — —` 0 251r 7 I 005, 195, Amin 11,1 #2p #100 #50#40#70 #10 #10#0 #I 52 W I.12 r rr rlao 45min 15 m, I THEf1Fl1DN[i3 I U.S.STANDARD SERIES I CLEAR BONNIE OPENINGS LOCATION TEST BORING NO.18 @ DEPTH OF 14.17 GRAVEL 0 % LIQUID LIMIT 36 SAMPLE DESCRIPTION CLAY,SLIGHTLY SANDY SAND 8 % PLASTICITY INDEX 21 CLASSIFICATION MT&CLAY 94 % GRADATION TEST RESULTS • FIGURE A37 'V\ A. G. WASSENAAR, INC. GEOTEOII CIL OONSULUNTS t • HYDROMETER ANALYSIS SIEVE ANALYSIS L SAND GRA CLAY(PLASTIC)T0 SIX BmNPLASRC) FINE j MEDIUM ICONISE FINE jVELcaARSE COWLES DIAMETER OF .001 .002 .006 .009 219 .097 .0774140 2977 210 4.76 9127 19.1 961 762 127 200 110 - 0 _ -- _ ---- -- - - 10 000 - 2D g m _ 90 O `� --- - u 5 40 _ ILI q t' E5Ul __ 70 O. 20 . 00 10 00 — . - 0 100 42Z 17W 60mkt It Min 4min 11K1 1200 1100 050 040030 I10 11016 H3/8" 0/C 1-1? r rr r 1 ti hr, READINGS I U.S.STANDARD SERIES I CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.19 49 DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 94 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 6 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(10N-PLASTIC) FINE I MEDIUM ICOARgE FINE VELCOARSE COBBLES DINAEIER OF PANICLE N MILLIMETERS .001 .004 .006 JI00 410 507 074 .140 .007 5➢0 1.10 226 4.78 052 10.1 92.1 711 127 200 100 - 0 -_-_ - - 00 ^ - - 10 __-- e0 - -- -- 1 - m _ 30 Q --- -- — - W Z -_ . -_ 1Z� 1 I VW 40 00 U �,- --_-- _— J _ _ =.--- --_-_-_- 0• 90 — - — 70 LLLL - __ __._ - I -- El 20 10 _— —_—_ . . OD 20 _ -- 100 — - 25N 15 TNIm OIT 19ni1 40i1 lmin 1 0590 H 200 9100 460/46 51099 N 9A!' 9(C 1-1? 3' Sr r 45 nin I TIME READINGS I U.S.STANDARD MINES I CLEAR SQUAREOPF71N4S - LOCATION TEST BORING NO.20 @ DEPTH OF 9.O GRAVEL 0 % LQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 92 % PLASTICITY INDEX NP CLASSIHCATION SILT&CLAY 8 % • GRADATION TEST RESULTS FIGURE A-38 `V A. a WASSENAAR, INC. GEOTECHNICAL CONSULTANTS I HYDROMETER ANALYSIS SIEVE ANALYSIS • I CLAY(PLASTIC)TO SLT 91ON-PLAS11c I SAND yEL RAE 1 MEDIUM ICEMAN' FINE I 0:09074M ES I DIAMETER CC 001 003 .05 OW AM 0A .074 .40 � 1 19 2.34 476 9.52 19.1 70.1 741 127 200 103 —_ _--00 Wiliamisia=sassersioniiimiirarilaria 10 0 70 I .— -- --=---- m N p ■ �earaill—.>_- .____=_ g _ �-�� a till p a. W 5° — i.—Oialia_w1Ia_t__ 5° a. a —MI .— ----_--_-- '° .m��mmIassion lai_�__ ___si_! 70 Le 2° i__SSa ss �ia1�a�_MINIM' 90 gf!INIMMI iMiIni�ail__ 99 2°5 CJI ' nihr cost 1911b 4MN loin WOO 0100 050.4007° 010 11019 04 7A2' SVr 1-1/7 r 7 1103 I TIMERE1DINGS I U.S.STANDARDSERIESS 1 CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.23 P DEPTH OF 9.0 GRAVEL 0 % LIQUID UMIT NV SAMPLE DESCRIPTION SANDS SLIGHTLY SILTY SAND SS % PLASTICITY INDEX NP CLASSIFICATION SILT B CLAY 14 % • I LUT HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO S (NON-PASTIC) I SAND GRAVEL FN I COI E I MEDILM 'COME! FNE I COARSECOBBLES MAMEIER OF IN MILLIMETERS .001 .005 .0W 019 037 a� 03 0 07 093 1.19 279 479 9.52 19.1 7&1 MY 127 200 100 _ 0 90 10 SO --ir) 60 70 1] a SO 6 a. G. 70 _ w 20 SO _ 10 —_ _ 90 2s hr 7M 0 mil 1S MN 4143 1mM 4203 0103 /03040/30 019 01019 Al SW 3/C 1-111 7 rr r103 45 Min 1500n 1 TINE REAONGS I OS-STANDARD SERIES 1 CLEAR MARE OFENNGS LOCATION TEST BORING NO.24 ca DEPTH OF 4.0 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 89 % PLASTICITY INDEX NP CLASSIFICATION SILT 8 CRAY 11 % • GRADATION TEST RESULTS FIGURE A-39 'V A. G. WASSENAAR, INC. DEOTEQwirx CONSULTANTS L L • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY 93usT1c)TO SILT(NON PLASM) SAND GRAVEL - FOE I MEDIUM ICGWSE NNE I COARSE COBBLES DIAMETER OF.001 AXE .005 Me .010 .077 074 .140 PARTICLE SI0 1.19 2.38 4.76 9.52 10.1 30.1 702 127 SW 100 _ _ --_-- --- S'C'E=.. 0 _ winca..araimiri to so num aiaammaameapossammeann 20 ___... =O = —Sa -=-- Z ii`iFAIMi°Ni�midi 3° 160 iiSE�i=mil■ ■ _—_ = e 50 �i•iei /I NallMMIL 31 ei . sal! '° CC —�--II-___ mama 70 d 2° N.IIIIIIN•SNaflssIaaa__NMI 90 ,° i ��=ela==iaii�.i■ier.iu 99 }9}$ u I$11 ti hr. n IDS 19 nit 4b 1min N200 910° 050 IOW 010 IN RO 00 3R304" 1.12 r Sr rt°o I TIMEREADINGS I U.S.STANDARD SERIES I CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.25 @ DEPTH OF 9.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 91 % PLASTICITY INDEX NP CLASSIFICATION SILT 8 CLAY 9 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SET MIN.PUST1C) SAO GAVEL FOE 1 MEDIUM 'COARSE FINE I wNR9ECOBBLES DIAMETER OF PAFMCLE IN.W, .002 .006 .009 .019 X07 074 149 . 0�� 235 4.75 9.52 WI 30.1 702 127 DM 100 -_ 0 IN __ 10 9° - I - .�- _- 3° 30 B ZtiT 00 ZZ I.O. 50 • _J- 0RI IL 30 __-- _ _._- 70 O. 10 - 90 254n t00 7NYn 0 S limn 011in fah 021° 0100 060040030 010 VIM N Lr IM 1.12 r rr r1°° l5 mi I TRIEREA@gS I U.S.STN SERIES I CLEAR SOLMREOPFNNIVI LOCATION TEST BORING NO.27 a DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY SAND 87 % PLASTICITY INDEX NP CLASSIFICATION SILT 8 CLAY 13 % • GRADATION TEST RESULTS FIGURE A-40 \If\ A. a WASSENAAR, INC. OEOThOIMGLL CONSILTI J1S F t HYDROMETER ANALYSIS I SIEVE ANALYSIS • CLAY(PLASTIC)TO SILT(NON-PLASTIC) SAND GRAVEL RNE I MEDIUM ICOARSE! we I COARSE IC0BSIES INAMEIER OF PARTIME IN MUMMERS 401 .002 .006 .009 419 .037 .0774.49 �p 2.35 470 9.52 19.1 0E1 702 127 RC .. 100 90 ____—_ _ 10 W _— - _.-- so Z __ — 00 a 1 � - ---- z d - -_ .--_r 40 a 5DC 11 8 - 50 ¢ 1 6W M so L 00 _ U1 — 10 1 2o 90 to 90 o — 23 1 6b 7h 90 min19min 4mn n *IMPS 1240 six 450/40130 115 *IO 14 St 374' I-lit r re rtao 45 m mn I TIME READINGS I U.S.STANDARD SERIES I CLEAR SOUMEOPEIN(s LOCATION TEST BORING NO.29 @ DEPTH OF 9.0' GRAVEL 88 % LIQUID LSAT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 12 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY % • HYDROMETER ANALYSIS SIEVE ANALYSE I CLAY(PLASTIC)TO SILT(NON-PLASTIC) SAND GRAVEL NNE I MEDIUM ICI FINE I COARSE ICOBBIES .001 402 OM 409 .019 407 477tA14E.i OF.7101E90 W11.9 235 4.7 9.52 19.1 SRI 792 In 200 1W --p — } 0 90 _ — 20 Oso 7° -- _ aii i o. so so cc 08 -- _ —_ 7040 -- SO 10 251r 7R 90 min Main 4n9, 1min 0200 six 150/40100 /15 /10M 14 N WC 1.1/2' r rr r/00 45nin 15 min I 1111E READINGS I U.S.STANgMD SERIES I CLEAR SCORE OPENINGS • LOCATION TEST BORING NO.30 @ DEPTH OF 9.0' GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 94 % PLASTICITY INDEX NP CI ACCIFICATION SILT&CLAY 6 % GRADATION TEST RESULTS • FIGURE A-41 VA\ A. G. WASSENAAR, INC. GEOTE*IMCAL CO2a1ATANi8 IL • HYDROMETER ANALYSISSAND SIEVE ANALYSIS GRAVEL ," CLAY(PLASTIC)TO SILT 940N-P013TIC) FILE ' � 'COARSE FILE =an DMAETER OF PARTICLE N MUMMERS AI .002 .008 .000 .019 1337 274 .149 307 .500 1.10 E30 4.70 022 19.1 34.1 782 to E00 101 0 I -BO 00 20 —_1 - / I6 E 40 .. - 40 f 40 / p BU 0_ 30 ,!/ 70 d 20 90 10 - 93 0 100 43SsIWI 11IT 00mb 190 4nin 1min 9900 1100 940 HOMO 110 110N n 3001 3/4' I-Ur r rr 0' I 6 MENEADNGS I US BTMDA SERE) I CLEAR SOUAREOPENINGS LOCATION TEST BORING NO.32(0T DEPTH OF 9.0' GRAVEL. 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SILTY SAND 74 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 28 % • HYDROMETER ANALYSIS SIEVE ANALYSIS GRA CLAY(PLASTIC)TO SILTPION-PL/3TIC) NNE i w I iI VEL COBBLES DIAMETER OF PANICLE N MILLIMETERS 201 .002 200 OM .019 I07 .W4 .140 327 5100 1.10 230 436 9.52 I9.1 30.1 702 127 200 100 0 40 10 40 — 20 —---Z W 7° 3D— g6 — 4o b,BO 450 W ao 5 —_ ------ _____=_ — --- — IL 0D 70 0. 6 20 — SO 10 40 t— 100 45r 11h.,„ 9056 19 win 4min 1min 9200 9140 940 940930 HO 91011 N N SW 1-1? r rr r TIME REAONGB I U.S.STANOMC SERES I CLEAR SQUARE OPB*I _ LOCATION TEST BORING NO.33 P DEPTH OF 4.0' GRAVEL 0 % LIQUID LMIT NV SAMPLE DESCRIPTION SAND.SUGH LY SILTY SAND 92 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 8 % • GRADATION TEST RESULTS FIGURE A-42 `V A. G. WASSENAAR, INC. GEOTECHNMAL CONSULTAiJ HYDROMETER ANALYSIS SIEVE ANALYSIS • CLAY rustic)TO SILT(NON-PLASTIC) I SANG GRAVEL Iris I meow 'COARSE' FIE I COARSE i COBBLES 100001 Me .005 .000 011 M7D7 .41 DIAMETER OF PARTICLE,Spp 1.19�a 1.10 O.St WI 570.2 19.1 TS 200 ..— _ so Miia �9= - C�samCC �C�.=CCU o iiiiiiisamalisilliiirnitirsiiam 10 E. �.Wamiwi—i i itittiMii�simmenmeaMiia— ---- --.====--��—�L-- 40 ° 70 -i:i--ems.--s=5-=—=--iallIIIIIIENNIIMIIII -- 92 92 BO a�l��M� iMUNN=l iI jaWara�iasiG 40 t AI 40 ��T�=IW TN AMIli C_GMMMInnau"t_iii—_� 50 et a 30 arillrildraaminmmomminmialtaraiwarareara 70 f. �� tiN ��Zl= 10 �aMilli�EMIEM �i:il-i____ i MD o I25 Tr Smo 13 Mn SOmin 19 pin n•min I , IT00 •i MO•i10fOp 110 ZION H OAT• we 1.1Q r Cr O,wo I TIME READINGS I U.S.STANDARD SERIES CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.37 @ DEPTH OF 9.0' SAMPLE DESC♦iIPTION SAND,VERY SILTY GRAVEL 0 % LIQUID LIMIT NV CLASSIFICATION SAND 61 % PLASTICITY INDEX NP SILT&CLAY 39 % • IHYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SLY(NON PLASTIC) I SAKI OTAYEL FINE I MEDIUM Imo, FINEI COARSE I CASES I .001 .002 DIAMETER OF PMIICLE N LISLRETB6-- A06 .00➢ AO .07 .074 .140 A01 .500 I.10 4.51 1.70 9.52 19.1 381 '752 141 400 100 90 -- f0 so - ° ]o I — — — _ __---- E--- m 8 co40 g so — 2 In 50 M --T---_ so R CC03 O W CC ----— __ —' ---' '-- I _. 70 0. 20 __ `1 =--------- - 00 10 mi" p 251rMerin IS ahil BO min 19 rtIn /mF 'min *200 H00 I50110/Op i16 /wn N 1T` VC 1-1/r T 40• 'fao I 191E READINGS I U.S.STAMMADSEAES I CLEAR SQUARE OPENINGS _ LOCATION TEST BORING NO.40 @ DEPTH OF 9.d GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SLIGHTLY S&TY SAND 93 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 7 % • GRADATION TEST RESULTS FIGURE A-43 `V A. a WASSENAAR, INC. ocorepWrkt�NSILTAUTS • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO 6LT IO4PLA9TIC) I SAND GRAVEL FINE 1 ILOMn5EI I CDC I°Mai°MEIEI OM 002 A09 A09 A19 .077 A7 .149 247 PARDCLE INLOUlMEcEAS 100 390 1.19 },9 1.79 9A9 19.1 79.1 76.2 197 900 0 =_- _ _ io2-aimm. =rain II) I0 � =a emi'■iniipiiiimmai ■i•'i�ii 90 --- ---:--- -- - g 70 In RI��E III_/I_-I-I-- 1111111N,2 79 a w ems ..COT===��—r -�is 70 93 allirldiritERFAISIElirainalaNill 4o Ci '- mamma-ma------a-------_a--Ii w ID 40—��_��s►inuai ismss■aii .9 8 c. 79 si ....sm. I-i_isia-ii:mii��i:ii W 10 Mar:.-2° Marlirilli --SEIR Miiil.... MIS p �.....ii■i1.ieai1�� ..�._. �MBii 99 16 mil is do MN Ihr a11191um6 4pW in, elo MO 190.ion n9 010M1 I4 7A' it 1.11 r rr r100 I 791E REALINGS I DA.SUMMED SERIES I DEAR SOIWIEOP@70p9 LOCATION TEST BORING NO.41 Q DEPTH OF 4.0' GRAVEL 0 % LIQUID LIMIT 26 SAMPLE DESCRIPTION SAND.CLAYEY SAND 76 % PLASTICITY INDEX 9 CLASSIFICATION SILT 8 CLAY 24 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT 9aDNPIASTx.7 SAND GRAVEL FINE I „®E., ICI FINE I MAMIE knit°I 01 1 OF N.01 A09 A05 .009 A19 A07 .074 ,IN .590 1.19 4.79 939 1°.1 79 S 29 1 792 10 so -�� = II i:II��IN�__ISMINIMIN to �C7- o so TCZOZICC=—Tee ��_� 2 10 �Fa!•_—�- .a_�imaimi ,—� 773 w a— ======= �_====i �.�is_ 30 2 --=---e— m----� d 79 ma�ial� lanair aaoo =—_..s...... so r- U 40 _Illllllllllllf ...... _ -._ IIII,■_11111,__,... ... � _ i5 „ a___stSCOI, I�� _s ' ,,„ S_x�— ==. 99 ma.a 551w 7h 90 n, 10 min 4 m lm71 1900 1100 150.40030 110 lion N 7A' 7K 1-1(t 3' Sr r1O° ail 19 mN 1 TYIEAB1099198 I UA.STANDARD SEIM I CLEAR eO1LM1EDPE,4f70S LOCATION TEST BORING NO.41 Ba DEPTH OF 9.V SAMPLE DESCIWnON SAND,SLIGHTLY SILTY SAND EL 0 % PLIQUIDLAST Y INDEX NP CLASSIFICATlN SLLT&CLAY 12 % STIgiY NP • GRADATION TEST RESULTS FIGURE 444 IlkV\ A. G. WASSENAAR, INC. GEOTECW CALCOICILTAMS HYDROMETER ANALYSIS SIEVE ANALYSIS • SAND GRAVEL CLAY(PLASTIC)TO SLT(NON-PLASTIC) FINEI MOM ICOWSE FINE COARSEDIAME1134 OF COBBLES ME IN MILLYBERS .001 .002 .005 AN 51D .037 .074 144 A 300 1.19 tDD 4.70 0.52 1D.1 91.1 76.2 127 D00 100 _ o so 10 W " 20 - O 70 ._.___._ O 30 2 -r yFW, W . 4-- 4o ZZ2 I SO — I W au o 40 _ 60 W U Lcc 70 O W W to W o 455 1J 1j n 1 Whin 19 AM 4pin 1m200 9100 sD0 10 040D00 0 01056 04 367 we 1.1/l r rr rlao I TIME READINGS I G.S.STANDARD SERFS I Ctt/NI BOUME OFBDNfis LOCATION TEST BORING NO.42 @ DEPTH OF 4.0 GRAVEL 0 % WAD LMLT NV SAMPLE DESCRIPTION SILT.SLIGHTLY SANDY SAND 12 % PLASTICf Y INDEX NP CIASSIFICA ION SILT&CLAY 88 % • HYDROMETER ANALYSIS SIEVE ANALYSIS SAND CLAY(MASTIC)TO SLT(NON-PLASTIC) GRAVEL COBBLES FINE I MEDIUM 'COARSE FINE I COHSE DIAMflR OF PMIIOLE IN MUMMERS .001 .002 A05 .00D A1D .037 A74 .140 .447 .590 Iii 266 4.76 9.52 197 36.1 76.2 127 200 MO , 0 MI y so - W 6 W _ _ W a. W W _ __ —_ _____ _ -O ---et ___—__ _ __ ___ _ W U YI - —_—_____ 0 50_ _ 70 0. • YD ' -- ____ — W 10 --_" . W 0 103 2514 45 mini75I Wun isa 4ni1 Intl 920 0103 050 461093000 914 CODS 04 397 5M 1-1/t V rr 9 I ONE READING) 1 173.STANDARD SENES 1 CLEAR SOWIIE OPENNOS LOCATION TEST BORING NO.43 @ DEPTH OF 9.G GRAVEL 0 % LIOUIO LMIT NV SAMPLE DESCRIPR ONN SILT.VERY SANDY SAND 49 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 51 % • GRADATION TEST RESULTS FIGURE A-45 `V A. a WASSENAAR, INC. GW7EpIN1CAl1X11131ATANTS • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NON.P AS11C) SANDORAVa COBBLES FINE I Mum I 06669FAS I CawsE DUJAET PAFMCLE IN MUMMERS .m 70 Am 1 0m A Ale .m7 .074 ��297 .500 1.10 238 4.78 9.52 19.1 38.1 70.2 127 2m 100 —_— __ _ - 0 90 10 00 zo ato .._ _ m 2 OD -- —� Z 40 ZZF 1d -- W ___ — 2 a I 7 i IA CE LI __— - I C A 70 m 10 90 0 - Ile Ib AMih1 Goat 19nin 4min I1.i1 IAA /1m Im 040100 OW 91008 AI 3/7 we 1.1? r WC I' ( 71i1ERGtO91G5 I U.O.CIANDAGU SEALS I CLEAR&WAiE OPENINGS LOCATION TEST BORING NO.45 @ DEPTH OF 4.0 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND.SILTY SAND 81 % PLASTICITY INDEX NP CLASSIFICATION SILTS CLAY 19 % • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT QNONPULSTIC) S'VO GRAVEL E I CUM ICCARSE FINE I COARSE GOOSES 001 A02 ACE 0809 019 .037 .7 OF.3877 MIM�00IN0 W•1.19• �L29 4.70 9152 10.1 38.1 792 127 200 1m 0 SO __ -_ • - 10 50 __. -_ __._- 20 -• 70 — 20 0 G O 40 qc 0. IE Al Z W L2W a. x -- _ - 7o n m --- eo 10 0 --- .— 2518 717 mni, thin 4win 1Ain #200 97:0 050 I40IS0 III #1008 #4 ? W 3 1.1177 BP 7/m 45 nin iS Min I TINE READINGS I U.S.SANOMO SEWS I QZM scum(OPENINGS LOCATION TEST BORING NO.48 @ DEPTH OF 4.0 GRAVEL 0 % LIQUID LIMIT NV SAMPLE DESCRIPTION SAND,SUGH LY SILTY SAND 93 % PLASTICRY INDEX NP CLASSIFICATION SILT&CLAY 7 % • GRADATION TEST RESULTS FIGURE A-46 `V\ A. a WASSENAAR, INC. GEOTECHNICALCONSTLTANTS F •HYDROMETER ANALYSIS I SIEVE ANALYSIS - it CLAY(PLASTIC)TO SILT 40'040-p/AS11L7 SAND GRAVEL RNE I WORN IDS' FINEIE ICOBBLES .001 A02 .005 Am .019 497 .0740E PARTICLE£ L911 I.9 236 4.76 952 191 39.1 752 127 900 100 so 10 Z >0 O N940 -" — - -..i = < --may..7 __ 40 50 tj U 50 -- — -.-- —F -- 5° Ir IL x tu is 4 —_— 1 —_ 60 ID 1 90 o5h _ 454. lull, 40"I'19si1n mns. tmin #200 •I% 950 040030 ON non n 3,97 3/C 1.1? r rr r/0D I TIME ADEICs I us STANDARD SERER I CLEAR 9aurnEOPBRIOs LOCATION TEST BORING NO.51 @ DEPTH OF 9.0' GRAVEL 0 % MUD UHT 33 SAMPLE DESCRIPTION CLAY.SANDY SAND 23 % PLASTICITY INCEL 20 CLASSIFICATION SILT&CLAY 77 % • HYDROMETER ANALYSIS I SIEVE ANALYSIS 1 CLAY(PLASTIC)TO 59.T 01ON-PLASTq SAND GRAVEL SIEVE 1 761E I MEDIAN' 'COARSE' FINE I COARSE COBBLES DIAMETER OF PARTICLE N MUMMERS ICO.001 402 .006 A09 019 .007 074 .1N .297 .690 1.19 1. 2]9 4.79 9. t9.I 39.1 762 127 900 -- - �m�m� / '� _ - 0 00 _ -_- !_J - 10 eD -- — '-- --- __n..- _. _ 20 - O ]0 _ --. __-- I 30 p� Z _------ - --Z-_--- -- -40 t(0040 lW� _--`_--. T - 7R- 50_ Z 0 44 70 0- 60 90 65,n twin Wmn 19 Ain Ill, 1mM CEO 01011 •60#40130 •I9 COn N MT W I-1/C r rr r/40 I TIME READINGS I U.S.STAtDAR:MISE5 I C1FAR 90UNEOPENND$ LOCATION TEST BORING NO.53 @ DEPTH OF 9.0' GRAVEL 0 % LgUID LIMB NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 97 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 3 % • GRADATION TEST RESULTS FIGURE A-47 `V A. G. WASSENAAR, INC. GEOTEpINGL CONSULTANT S I r • HYDROMETER ANALYSIS SIEVE ANALYSIS AY(PLASTIC)TO SILTMDN-PAS11C) SANG GRAVEL n R 0BLII E I MEOW ICOARSEI ENE ' COARSE CL DIAME. 01 002 .005 .009 .019 m7 .0774 14 OFD .500 ryTER9ES! 4O 9S2 19.1 05.1 752 127 200 100 9D �e—armi r--e —m—�—Z-:�-MIIIMMEN,e-.eeinaniTh tee — 0 10 so MN��ME��IIMMEININIIIIIIIII 1M.INIIIIIIIMIN.M�aa��.. 20 =_ —a xs =====_ Io ._... CSC xxxS—�—x— N �_ _MM MIFiiIM��E�aeMail a' ° n eo I -�xxxl� --- --= -=.- A 0. 20 I•M__S�I•M� -� — -xC.�.axe—S-� ��Q��.��allaIMIMINIIIIM.. 110 Io --.- - � a- S --iii- ■ i - iii_i_S so o 1 1jlw 5omN 1 19 . 4 mit HMI #20O n OO 00 a #4 o ON 010)5 N Sr MC HIV 3' sr r/ao I TIME READINGS I u.S STANDAifl SEES I MEM 5OuMEOPENNG9 LOCATION TEST BORING NO.54 @ DEPTH OF 19.G GRAVEL 0 % LOAD LIMIT NV SAMPLE DESCRIPTION SAND,SILTY SAND 72 % PLASTICITY INDEX NP CLASSIFICATION SILT&CIA? 28 % -_ • HYDROMETER ANALYSIS SIEVE ANALYSIS AY(PLASTIC)TO SLT(NoN?ULSTIC) FINEI eIEOMI ICONt5El FNE GRAVEL r+vuu c¢ I COARSE .001 .002 ADS 009 019 .097 .07 OIAMETER o 2$17 SOO 1 19 P.2 ICLE ZYb 475 90 19.1 001 752 127 200 100 -- —90 0 10 >o �.T.�Gi z -- ----_: - .O so O 40 so 0 m — ---��.� y3=C — — �_... -- x= — �xS w 20 — — _ 70 it. _ =��S--= -- '— --_ — yZC— 00 10 Kt 0 — — — — — x . — -- -- — 9251w ISnii Iv 501111 /9ai1 anvil IS, fro O50•PIO 30 Jib )IOM N 0T W 1.7/2` r sr r11X7 I TIME READINGS I U.S.STANDARD SEISES I CLEAR SOUNIEOPEN9gS LOCATION TEST BORING NO.57 @ DEPTH OF 9.O GRAVEL 0 % LIQUID LM4IT NV SAMPLE DESCRIPTION SAND.SLIGHTLY SILTY SAND 93 % PLASTICITY INDEX NP CLASSIFICATION SILT&CLAY 7 % • GRADATION TEST RESULTS FIGURE A-48 NIF\ A. G. WASSENAAR, INC. GEOTEd1NANL O 0NS4ATANTS •HYDROMETER ANALYSIS I SIEVE ANALYSIS CLAY 9'LAS71C)TO SILT N%/ F SAND GRAVEL IFINE I wow loagasE I qHE I Comes I CoONI ESMATTER .WI .00¢ .005 .Oro .au .037 074 OF EMLSE� 100390 1.19 211 4.m 9S 19.1 1L1 712 122 200 INN SC IIIMIEMENWirallIMMINIIIIMIMEEMIEN I° 00 m =_��_ari � r��aCal�_m�zaApia ilia amnia ia 30 R 3 e le...=_..........0.==............eM==ES 2D 0. U¢ 40 _ ___iTi__4i�i_z=��__li ill a a 39 MEM= - -i ii 70 iii 20 a—"fi ==_. _ii�iii_e_r __ii .9 10 M�___W ========..—=•=—' ..—.======ii --_ _ -___- ___-- - ____i_i 90 �0251. ---- — 45mN ,a, Omit 19.iI 4min Int 9W -� •900 910p 40440 /Id IfOn •1 3* SW 1-Nr r rr x100 ONE CGS I U.S.STANDAIIDSERIE3 I CLEAR 80UMEOREN1M3g LOCATION TEST BORING NO.59 @ DEPTH OF 14.0 SAMPLE DESCRIPTION SILT.SANDY GRAVEL 0 % UpUD LWR NV CLASSIFICATION SAND 24 % PLASTICITY INDEX NP SILT&CLAY 70 % 0 HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASM)TO SILTQ4ONPlASiK:1 SAND GRAVEL RNE I Nm.,,i ICSEI FINE I coARse I COBBLES OF A01 .002 305 .009 A19 .007 PILtEM, ERS 1W 390 1.19 9.9e 4.09 9S 41 2 19.1 5 74.2 127 900 0 - so m -- — 10 t7 m --__ _ -- so _ so . - _ _ 40 R la U 40 - ?- -- — —"-- _— -- 50 2 do E tu LL 00 —_ — —T— et _ I—=-- ----_- T ___-nn. m a 20 -- -- __--_= _ _ _— 90 - '151. 7M 00 min 19 nNn 4min Imp 9200 4100 950440930 910 •tlln 94 3T 3N' 1-sr r O'er 45 no 15 min f00 I ME READINGS I U.S STANDAFDSENES I CLEAR SOASVEOP IGS _ LOCATION TEST BORING NO.61 P DEPTH OF 19.0 GRAVEL 0 % LIQUID OMIT NV CCLASSE DESTIO NPLE DESCRINPTION SAND.VERY SILTY SAND 63 % PLASTCITY INDEX NP SILT&CLAY 37 % • GRADATION TEST RESULTS FIGURE A49 `V\ A. G. WASSENAAR, INC. GEOTEOINIGN.CONSULTANTS i • • HYDROMETER ANALYSIS SIEVE ANALYSIS SAND GRA CLAY(PLASTIC)TO SILT(NON-PIASTIC) I � I PINE I Seal IWARSE FINE I WABSE COBBLES DIAMETER OF PARTICLE IN MILLIMETERS .001 400 .DZ A09 ON .037 .074 IC 997 470 1.19 2.30 4.75 PA2 19.1 3&1 7702 I07 500 100 410 • 90 90 • 70 ill 4o a 41 i 40 —.`--.—._ ---.—__. _ —_—_--CI 1_ O cc I a so I To — —_ oo m lo .— ----+—_.. _..._ — ------- o0 %I. 7M 60 9M 19.11 4� 1 min F20 0100 050040030 016 01005 04 3/r taD 45 min 15min9W tAAO' r rr r TIME READINGS I U.S.STANDARD SERIES I CLEAR SQUARE OPENINGS LOCATION TEST BORING NO.62 @ DEPTH OF 4.0' GRAVEL 0 % LIQUID LB= NV SAMPLE DESCRIPTION SILT,SANDY SAND 16 % PLASTICITY INDEX NP CLASSIFICATION SILTS CLAY 64 % . • GRADATION TEST RESULTS FIGURE A-50 STATE OF COLORADO • Bill Owens.Governor Dennis E.Ellis,Executive Director .••. Dedicated to protecting and improving the health and environment of the people of Colorado 4300 Cheny Creek Dr.S. Laboratory Services Division �: G` i*.7 Denver,Colorado 10246-153O 8100 Lowry Blvd.* . • Phone(303)692-2000 Denver,Colorado 80230-6928 n8 TDD Line(303)691-7700 (303)692-3090- Located in Glendale,Coloradoof Public Health Colorado Department http://wvnv.cdphe.state.co.us - and Environment October 11,2006 Matthew J.Benak,PE Jacob Helgoth Consultants 12640 West Cedar Drive, Suite A Lakewood,CO 80228-2005 Re: PEL-0200187,Resource Colorado Water and Sanitation Metropolitan District WWTF Dear Mr.Benak: The Water Quality Control Division(Division)of the Colorado Department of Public Health and Environment has prepared,per your request;the Preliminary Effluent Limits(PELs)for the proposed Resource Colorado Water and Sanitation Metropolitan District wastewater treatment • facility(RCWSMD WWTF). These effluent limits were developed,as detailed in the attached document, for use as one of the submittals in your application for Site Approval. PELs developed for the proposed RCWSMD WWTF(Table 1)are based on effluent limits for pollutants of concern as established in the Regulations for Effluent Limitations(Regulation No. 62),and water quality-based effluent limits(see the analysis in the attached document)necessary for protection of the water quality in the receiving water. With a hydraulic design capacity of 0.30 million gallons per day(MGD)and discharge into Box Elder Creek,which is identified as stream segment COSPMS05a,the proposed RCWSMD WWTF maybe covered by a general permit. The total ammonia limits warrant clarification. As explained in the attached document,the total ammonia water quality-based effluent limits(WQBELs)are based on assumptions,given the absence of effluent and in-stream pH and temperature data. This is done per Division standard procedure and utilizes statistically determined in-stream and effluent pH and temperature conditions for various types of streams and facilities as inputs to the Colorado Ammonia Model (CAM). A PELs evaluation is attached to document the findings and decisions that were used to derive the PELs in Table's 1 and 2. • I Table 1 Proposed RCWSMD WWTF Preliminary Effluent Limits for Discharge to Box Elder Creek BODS(mg/1) 45(7-day average),30(30-day average) GODS(%removal) 85(30-day average) TSS,mechanical plant(mg/1) 45(7-day average),30(30-day average) TSS,mechanical plant(%removal) 85(30-day average) Oil and Grease(mg/1) 10(maximum) pH(s.u.) 6.5-9.0(minimum-maximum) Fecal Coliform(#/100 ml) 4000(7-day geomean),2000(30-day geomean) E.Coli(#1100 ml) 1260(7-day geomean),630(30-day geomean) Total Residual Chlorine(mg/1) 0.019(daily maximum),0.011(30-day average) y1:-,y fi • Ate+,.' igli ir3r Total Ammonia,January(mg/1) 14(daily maximum),8.3(30-day average) 'Totat flora ty(mg/I) - 12(daily maximum),6.9(30-day average) - Total Ammonia,March(mg/I) 13(daily maximum),7.4(30-day average) Total Ammonia,April(mg/1) 13(daily maximum),6.5(30-day average) • Total Ammonia,May(mg/1) 12(daily maximum),5.5(30-day average) Total Ammonia,June(mg/1) 14(daily maximum),5.7(30-day average) Total Ammonia,July(mg/1) 15(daily maximum),5(30-day average) Total Ammonia,August(mg/1) 12(daily maximum),3.8(30-day average) Total Ammonia,September(mg/I) 13(daily maximum),4.3(30-day average) Total Ammonia,October(mg/1) 11(daily maximum),4.2(30-day average) Total Ammonia,November(mg/1) 13(daily maximum),6.3(30-day average) Total Ammonia,December(mg/) 12(daily maximum),6.6(30-day average) New Total Ammonia Criteria In the summer of 2005 the Colorado Water Quality Control Commission(WQCC)adopted new total ammonia criteria into Regulation No.31. This criteria is expected to become the stream standard for COSPMS05a in March of 2007,during the scheduled Statewide rule making hearing.The earliest this new ammonia criteria will become effective in permits for the South Platte River Basin is October of 2007. It is after this time that PELs calculated using the new total ammonia criteria could be incorporated into effluent limits. Table 2 below shows the potential effluent limits for total ammonia based on the new criteria,computed using the AMMTOX model. • 2 Table 2 WQBEL Summary for the New Total Ammonia Criteria(mg/1) • Month WQBEL January 13(daily maximum),5.5(30-day avenge) February 10(daily maximum),4.9(30-day avenge) March 7.2(daily maximum),3.2(30-day average) April 6.1(daily maximum),1.9(30-day average) May 8.0(daily maximum),2.2(30-day average) June 11(daily maximum),2.2(30-day average) July 10(daily maximum),1.7(30-day average) August 8.1(daily maximum),1.6(30-day average) September 8.8(daily maximum),1.8(30-day average) October 11(dally maximum),2.8(30-day average) November 10(daily maximum),3.6(30-day avenge) December 8.7(daily maximum),3.9(30-day avenge) If you have any questions regarding this matter,please contact me at(303)692-3608. Sincerely, Eric T.Oppelt,P.E. CDPH&E,WQCD cc: Kent Kuster, WQCD—Engineering Section • Torn Armitage,WQCD—Engineering Section PEL-0200187 file • 3 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 PRELIMINARY EFFLUENT LIMITS,APPENDIX A • BOX ELDER CREEK RCWSMD WWTF Table A-1 Assessment Summary Name of Facility RCWSMD WWTF PELNumber PEL-0200187 WB1D - Stream South Platte River Basin,Middle South Platte River Basin Sub-basin,Stream Segment Segment 05A:Mainstems of Lone Tree Creek, Crow Creek and Box Elder Creek from their sources to their confluences with the South Platte River, except for specific listings in Segment 5b. COSPMS05a Classifications Warm Water Aquatic Life Class 2 Class 2 Recreation Agriculture Designation Use Protected I. Introduction The preliminary effluent limits(PELs)evaluation for the proposed Resource Colorado Water and Sanitation Metropolitan District Wastewater Treatment Facility (hereafter referred to as the RCWSMDWWTF)was developed for the Colorado Department of Public Health and Environment (CDPHE) Water Quality Control Division(Division). The evaluation was conducted to facilitate issuance of PELs for the proposed RCWSMD WWTF for pollutants found to be of concern, including total residual chlorine,Escherichia Coli,fecal coliform and total ammonia. Figure A-1 contains a map of the study area evaluated as part of PELs development. The proposed RCWSMD WWTF will discharge to Box Elder Creek at a point approximately three and a half miles downstream of Klug Lake. This site is located south-southeast of Milton Reservoir. According to discussions with the local water commissioner,Box Elder Creek has a low flow of zero. No other permitted point sources were identified as dischargers to Box Elder Creek upstream of the proposed discharge location or downstream prior to the confluence with the South Platte River. Thus,the findings of this assessment indicate that there is no dilution,no other sources of pollutants of concern,and that assimilative capacities are equal to the in-stream standards applied to the proposed RCWSMD WWTF effluent discharge. Information used in this assessment includes data gathered from the RCWSMD WWTF, the Division, the U.S. Environmental Protection Agency(EPA) and communications with the local water commissioner. The data used in the assessment consist of the best information available at the • time of preparation of this WQA analysis. PELs Appendix A Page 1 of 11 Last Revised by BO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PET.-0200187 Figure A-1 • Study Area 7,r 4.., ......_, i ,. Box , R �� WWTF Ei l\\ff` k e � � , • ;y� burg Q f � Weld Cen r4 I • )166-1. „ . .74 Legend Source: EPA, NI aip.wa rare bodes • WWTF Discharge Location Enviromapper no Spand stssar,e., alma aware noway: way I0 'Man streets pe """p ® Water Bodies II. Water Quality The proposed RCWSMD WWTF discharges to the Water Body Identification (WBID) stream segment COSPMS05a,which means the South Platte River Basin,Middle South Platte River Basin Sub-basin,Stream Segment 05a. This segment is composed of the"Mainstems of Lone Tree Creek, Crow Creek and Box Elder Creek from their sources to their confluences with the South Platte River, except for specific listings in Segment 5b." Stream segment COSPMS05a is classified for Warm Water Aquatic Life Class 2,Class 2 Recreation and Agriculture. • PEIs Appendix A Page 2 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 Numeric standards are developed on a basin-specific basis and are adopted for particular stream . segments by the Water Quality Control Commission. To simplify the listing of the segment-specific standards,many of the aquatic life standards are contained in a table at the beginning of each chapter of the regulations. The standards in Table A-2 have been assigned to stream segment COSPMS05a in accordance with the Classifications andNumeric Standards for South Platte River Basin,Laramie River Basin, Republican River Basin, Smoky Hill River Basin. Table A-2 In-stream Standards for Stream Se: i i ent COSPMS05a Dissolved Oxygen(DO)=5 mg/I,minimum pH=6.5-9su Fecal Coliform=2,000 colonies/100 ml E.colt=630/100 ml Un-ionized ammonia acute=TVS Unionized ammonia chronic=0.1 mg/1 Chlorine acute=0.019 mg/1 Chlorine chronic=0.011 mg/1 Free Cyanide acute=0.005 mg/1 Sulfide chronic=0.002 mg/1 Boron chronic=0.75 mg/I Nitrite=0.5 mg/1 • gf roil Total Recoverable Arsenic acute=100 µg/I Dissolved Cadmium acute and chronic=TVS Dissolved Trivalent Chromium acute and chronic=TVS Dissolved Hexavalent Chromium acute and chronic=TVS Dissolved Copper acute and chronic=TVS Total Recoverable Iron chronic=1000 µg/l Dissolved Lead acute and chronic=TVS Dissolved Manganese chronic=50 µg/1 Dissolved Manganese acute=TVS Total Mercury chronic=0.01 µg/1 Dissolved Nickel acute and chronic=TVS Dissolved Selenium acute and chronic=TVS Dissolved Silver acute and chronic=TVS Dissolved Zinc acute and chronic=TVS Note that the term of and associated value that corresponds to TVS are further explained in the regulations;however,because those pollutants with TVS-based standards are not applicable to this facility with this design flow,no further discussion is provided as part of this analysis. • PELs Appendix A Page 3 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 • Ambient Water Quality The Division evaluates ambient water quality based on a variety of statistical methods as prescribed in Section 31.8(2)(a)(i) and 31.8(2)(b)(i)(B) of the Colorado Department of Public Health and Environment Water Quality Control Commission Regulation No.31. The ambient water quality was not assessed for Box Elder Creek because the background in-strewn low flow condition is zero,and because no ambient water quality data are available for Box Elder Creek upstream of the proposed RCWSMD WWTF discharge. M. Water Quantity The Colorado Regulations specify the use of low flow conditions when establishing water quality based effluent limitations,specifically the acute and chronic low flows. The acute low flow,referred to as 1E3,represents the one-day low flow recurring in a three-year interval. The chronic low flow, 30E3,represents the 30-day average low flow recurring in a three-year interval. Low Flow Analysis Although there is periodic flow in Box Elder Creek upstream of the proposed RCWSMD WWTF, the 1E3 and 30E3 monthly low flows are set at zero based on information provided by the local Water Commissioner. For this analysis,low flows are summarized in Table A-3. Table A-3 • Low Flows for Box Elder Creek at the Proposed RCWSMD WWTF 27, C;fe iNar Ap V.a rapt .('ar Bugg s�1 1E3 0 0 0 0 0 0 Q 1� Dec .. '4 . . n3. ..r{ 0 0 0 0 0 0 .,;:.0 Acute 30E3 (7aunic 0 0 0 0 0 0 0 0 0 0 0 0 0 IV. Technical Analysis In-stream background data and low flows evaluated in Sections II and III are ultimately used to determine the assimilative capacity of Box Elder Creek near the proposed RCWSMD WWTF for pollutants of concern. For all parameters except ammonia,it is the Division's approach to conduct a technical analysis of stream assimilation capacity using the lowest of the monthly low flows(referred to as the annual low flow)as calculated in the low flow analysis. For ammonia,it is the standard procedure of the Division to determine assimilative capacities for each month using the monthly low flows calculated in the low flow analysis,as the regulations allow the use of seasonal flows when establishing assimilative capacities. The Division's standard analysis consists of steady-state, mass-balance calculations for most pollutants and modeling for pollutants such as ammonia. The mass-balance equation is used by the Division to calculate the maximum allowable concentration of pollutants in the effluent, and • accounts for the upstream concentration of a pollutant at the existing quality, critical low flow PELs Appendix A Page 4 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 (minimal dilution), effluent flow and the water quality standard. The mass-balance equation is • expressed as: M3Q3— M2= Q2 Where, Qr =Upstream low flow(1E3 or 30E3) Q2- =Average daily effluent flow(design capacity) Q3 =Downstream flow(Qr+Q2) M. =In-stream background pollutant concentrations at the existing quality M2 =Calculated maximum allowable effluent pollutant concentration M3 =Maximum allowable in-stream pollutant concentration(water quality standards) When Qr equals zero, Q2 equals Q3,and the following results: M2=M3 Because the low flow(Qr)for Box Elder Creek is zero,the assimilative capacity of Box Elder Creek for the pollutants of concern is equal to the in-stream water quality standards. Pollutants Evaluated The following parameters were identified by the Division as pollutants to be evaluated for this • facility: • BOD5 • TSS • Percent removal • Oil and Grease • pH • Total Residual Chlorine • Fecal Coliform • E. coli • Ammonia. There are no in-stream water quality standards for BOD5,TSS,percent removal,and oil and grease for Box Elder Creek. Thus,assimilative capacities were not determined for these parameters in this section and an antidegradation review for these parameters was not conducted in Section V. The evaluation of applicable limitations for these pollutants can be found in Section VI, Regulatory Analysis. Based upon the size of the discharge,the lack of industrial contributors,dilution provided by the receiving stream and the fact that no unusually high metals concentrations are expected to be found in the wastewater effluent,metals are not evaluated in this water quality assessment. During assessment of the facility,nearby facilities,and receiving stream water quality,no additional parameters were identified as pollutants of concern. • PELs Appendix A Page 5 of 11 Last Revised by BO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 Proposed RCWSMD WWTF:The proposed RCWSMD WWTF will be located at NW'A of the • NW%of S32,T3N,R64W;20 miles Southeast of Rangely,CO;at 40° 11'20"N latitude and 104° 35'39" W longitude in Weld County. The proposed design capacity of the facility is 0.30 MGD (0.46 cfs). Wastewater treatment is proposed to be accomplished using a mechanical wastewater treatment process. The technical analyses that follow include assessments of the assimilative capacity based on this design capacity. Nearby Sources An assessment of nearby facilities based on EPA's Permit Compliance System(PCS)database was conducted. There were no upstream permitted dischargers and the nearest downstream dischargers were to the South Platte River, more than fifteen miles downstream. Note that nearby facilities included: • Town of Hudson WWTF(COG-589013),which discharges to Beebee Canal,an unclassified water of the state that would ultimately drain to the South Platte River via drainage other than Box Elder Creek. • Weld County School District, Weld Central Jr/Sr High School WWTF (COG-589005), which discharges to Lowline Canal Ditch, an unclassified water of the State that would ultimately drain to the South Platte River via drainage other than Box Elder Creek. • Town of Keenesburg WWTF(CO-0041254),which discharges to both groundwater and to Sloan Reservoir,an unclassified water of the state that would ultimately drain to the South Platte River via drainage other than Box Elder Creek. Due to the in-stream low flow of zero,the assimilative capacities during times of low flow are not • affected by nearby contributions. Therefore,modeling facilities in conjunction with the proposed RCWSMD WWTF was not necessary. Based on available information,there is no indication that other sources were a significant source of pollutants of concern. Thus, other sources were not considered in this assessment. pH The full assimilative capacity of the stream for pH was determined to equal the in-stream water quality standards of 6.5-9.0 su. Chlorine:The full assimilative capacity of the stream for total residual chlorine was determined to equal the in-stream water quality standards of 19 µg/1(acute)and 11 µg/1(chronic). Fecal Conform and E. coli: The full assimilative capacity of the stream for fecal coliform was determined to equal the in-stream water quality standard of 2000 colonies/100 ml(chronic). The full assimilative capacity of the stream for E.coil was determined to equal the in-stream water quality standard of 630 colonies/100 ml(chronic). Ammonia:Ammonia is present in the aqueous environment in both ionized and un-ionized forms. It is the un-ionized form which is toxic and which is addressed by water quality standards. The proportion of total ammonia present in un-ionized form in the receiving stream is a function of the combined upstream and effluent ammonia concentrations,and the pH and temperature ofthe effluent and receiving stream,combined. • PELs Appendix A Page 6 of 11 Last Revised by BO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 The Colorado Ammonia Model(CAM)is a software program designed to project the downstream • effects of ammonia and the ammonia assimilative capacities available to each discharger based on upstmam water quality and effluent discharges. To develop data for the CAM,an in-stream water quality study.must be conducted of the upstream receiving water conditions,particularly the pH and corresponding temperature,over a period of at least one year. There were no data available for Box Elder Creek near the proposed RCWSMD WWTF that could be used as adequate input data for the CAM. Therefore,the Division standard procedure is to rely on statistically-based,regionalized data for pH and temperature compiled from similar facilities and receiving waters. The CAM may be calibrated for a number of variables in addition to the data discussed above. The values used for the other variables in the model are listed below: • Stream velocity=0.3QOAd • Default ammonia loss rate=6/day • pH amplitude was assumed to be medium • Default times for pH maximum,temperature maximum, and time of day of occurrence • Threshold percent un-ionized ammonia was taken as 5.4 percent • pH rebound was set at the default value of 0.2 su per mile • Temperature rebound was set at the default value of 0.7 degrees C per mile. The results of the ammonia analyses for the proposed RCWSMD WWTF are presented in Table A- V. Antidegradation Review As set out in The Basic Standards and Methodologies of Surface Water, Section 31.8(2)(6), an antidegradation analysis is required except in cases where the receiving water is designated as"Use Protected." Note that"Use Protected"waters are waters"that the Commission has determined do not warrant the special protection provided by the outstanding waters designation or the antidegradation review process"as set out in Section 31.8(2x6). The antidegradation section of the regulation became effective in December 2000, and therefore antidegradation considerations are applicable to this PELs analysis. According to the Classifications and Numeric Standards for South Platte River Basin,Laramie River Basin, Republican River Basin, Smoky Hill River Basin, stream segment COSPMS05a is Use Protected. Because the receiving waters are designated as Use Protected,no antidegradation review is necessary in accordance with the regulations. Thus, for purposes of this PELs analysis, antidegradation review requirements have been met and no further antidegradation evaluation is necessary. • PELs Appendix A Page 7 of 11 Last Revised by BO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 • Table A-4a Ammonia Assimilative Capacities for Box Elder Creek at the Proposed RCWSMD W WTF Design of 0.30 MCD(0.46 cfs) 1Xpilrh romdAmmonia Chronic(mg/A Told Ammonia Acute(mg/i).`.,; January 8.4 14 February 6.9 12 March 7.4 13 April 6.5 13 May 5.5 12 June 5.7 14 July 5.0 15 August 3.8 12 September 4.2 13 October 4.2 11 November 6.3 13 December 6.6 12 Consideration of Adoption of New Total Ammonia Criteria: In the summer of 2005 the WQCC adopted new total ammonia criteria into Regulation No.31. This • criteria is expected to become the stream standard for COSPMS05a in March of 2007,during the scheduled Statewide rule making hearing. In order to show the affect this change in ammonia standard may have on effluent limits for the Resource Colorado Water and Sanitation Metropolitan District WWTF the AMMTOX model was used to calculate comparative effluent limits for the WWTF. The data used for running the AMMTOX model are similar to that needed to run the CAM, so input values were readily available for running AMMTOX. Table A-4b below shows the WQBEL for total ammonia based on the new criteria,computed using the AMMTOX model. Table A-4b Monthly WQBEL for Total Ammonia based on the new Total Ammonia Standard Month Chronic Total Ammonia(mg/L) Acute Total Ammonia(mg/L) January 5.5 13 February 4.9 10 March 3.2 7.2 April 1.9 6.1 May 22 8.0 June 22 11 July 1.7 10 August 1.6 8.1 September 1.8 8,8 October 2.8 11 November 3.6 10 • December 3.9 8.7 PELs Appendix A Page 8 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 • VI. Regulatory Analysis Regulation No.62,the Regulations for Effluent Limitations,includes effluent limitations that apply to all discharges of wastewater to State waters,with the exception of storm water and agricultural return flows. These regulations are applicable to the discharge from the proposed RCWSMD WWTF. Table A-5 contains a summary of these limitations. Table A-5 Specific Limitations for the Discharge of Wastes 1-Day 30. r! Isstaataalaour Parameter 9 yA Aap "e'agl ;itluxGriula BODs 45 mg/1 30�i NA TSS,mechanical plant 45 mg/1 30 mg/1 NA TSS,aerated lagoon 110 mg/1 75 nig/I NA TSS,non-aerated lagoon 160 mg/1 105 mg/1 NA BODS Percent Removal NA 85% NA TSS Percent Removal NA 85% NA Total Residual Chlorine NA NA 0.5 mg/1 pH NA NA 6.0-9.0 an range Oil and Grease NA NA 10 mg/1 Note that the TSS limitations shown above vary based on the type ofwastewatertreatment processes • used at the facility. The Regulations for Effluent Limitations waive the 85 percent removal requirements for TSS where waste stabilization ponds,both aerated and non-aerated,are used as the principal process for treating domestic wastes. Section 62.4(1)of the Regulations for Effluent Limitations also indicates that numeric limitations for fecal conform shall be determined. The State has developed the Procedure for Selection of Fecal Conform Limitations Permit Conditions that specifies a 30-day geometric mean limit of 6,000 colonies per 100 ml and a 7-day geometric mean limit of 12,000 colonies per 100 ml when the ratio of the receiving stream flow to design flow is greater than ten to one. The Procedurefor Selection of Fecal Col form Limitations Permit Conditions also specifies that the 7-day geometric mean limit must be calculated as two times the 30-day geometric mean limit. Comparably, for E. Coli, the Division establishes the 7-day geometric mean limit as two times the 30-day geometric mean limit and also includes maximum limits of 2,000 colonies per 100 ml(30-day geometric mean)and 4,000 colonies per 100 ml(7-day geometric mean). VII. Preliminary Effluent Limits The potential PELs reflected in Table A-6 include the consideration of the following: • Assimilative capacities as discussed in the technical analysis contained in Section IV • Effluent limits prescribed by the regulations based on the regulatory analysis provided in Section VI. PELs Appendix A Page 9 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 • It should be noted that the more stringent total residual chlorine, fecal coliform and E. Coli water quality-based effluent limits,as set forth in the Technical Analysis Section IV,are included as PELs as they are more stringent than the effluent limits for these parameters prescribed in the Regulatory Analysis Section VI. Furthermore, as explained in the Regulatory Analysis Section VI,the fecal coliform and E.Coll 7-day geometric mean limits are two times the 30-day geometric mean limits, respectively,as set out in the Division procedures. Table A-6 Proposed RCWSMD WWTF Preliminary Effluent Limits for Discharge to Box Elder Creek BODs(mg/I) 45(7-day average),30(30-day average) BODE(%removal) 85(30-day average) TSS,mechanical plant(mg/I) 45(7-day average),30(30-day average) TSS,mechanical plant(%removal) 85(30-day average) Oil and Grease(mg/I) 10(maximum) 6 5 9 0(mmrmum maximum) E g r. .. ,` 'Yt" ^'.E r, Li 'Y ,`/.sicr r5�3 :va4g Sf# "� ° 'RU N!S T ' s-:-✓.t s'i, ,.!- • �t Fecal Coliform(#1100 ml) 4000(7-day geomean), NA NA 2000(30-day geomean) E.Coli(#/100 ml) 1260(7-day geomean), NA NA 630(30-day geomean) Total Residual Chlorine(mg/) 0.019(daily maximum), NA NA 0.011 4•330da average) • FT3'" 7bt4f lma3C ' }$t L's li 4 r ' a Y} n f Total Ammonia,January(mg/1) 14(daily maximum),8.4 NA NA (30-day average) Total Ammonia,February(mg/1) 12(daily maximum),6.9 NA NA (30-day average) Total Ammonia,March(mg/I) 13(daily maximum),7.4 NA NA (30-day average) Total Ammonia,April(mg/1) 13(daily maximum),6.5 NA NA (30-day average) Total Ammonia,May(mg/1) 12(daily maximum),5.5 NA NA (30-day average) Total Ammonia,June(mg/I) 14(daily maximum),5.7 NA (30-day average) NA Total Ammonia,July(mg/1) 15(daily maximum),5 NA NA (30-day average) Total Ammonia,August(mg/1) 12(daily maximum),3.8 NA NA (30-day average) Total Ammonia,September(mg/1) 13(daily maximum),4.2 NA (30-day average) NA Total Ammonia,October(mg/l) 11 (daily maximum),4.2 NA (30-day average) NA Total Ammonia,November(mg/i) 13(daily maximum),6.3 NA (30-day average) NA Total Ammonia,December(mg/1) 12(daily maximum),6.6 NA (30-day average) NA PELs Appendix A Page 10 of 11 Last Revised by EO 10/11/2006 RCWSMD WWTF Preliminary Effluent Limits PEL-0200187 VIII. References • Colorado Total Maximum Daily Load and Wasteload Allocation Guidance, CDPHE, WQCD, November 1991. Classifications and Numeric Standards for South Platte River Basin, Laramie River Basin, Republican River Basin, Smoky Hill River Basin, Regulation No. 38, CDPHE, WQCC, effective September 30,2006. The Basic Standards and Methodologies for Surface Water, Regulation 31, CDPHE, WQCC, Effective December 31,2005. Antidegradation Significance Determination for New or Increased Water Quality Impacts, Procedural Guidance, CDPHE,WQCD,December 2001. Memorandum Re: First Update to Guidance Version 1.0,CDPHE,WQCD,April 23,2002. Rationale for Classifications, Standards and Designations of Segments of the South Platte River, CDPHE,WQCD,effective July 2004. Policy Concerning Escherichia coli versus Fecal Conform,CDPHE,WQCD,July 20,2005. • Procedure for Selection of Fecal Coliform Limitations Permit Conditions,CDPHE,WQCD,April 7, 1976. Regulations for Effluent Limitations,Regulation 62,CDPHE,WQCC,December 30, 1998. PELs Appendix A Page 11 of 11 Last Revised by EO 10/11/2006 ATTACHMENT 1 • NORTH FRONT RANGE WATER QUALITY PLANNING ASSOCIATION Civic Center,600 E. 3'•Street, Loveland,CO 80537 970.962.2785—970.962.2913 fax nfrwooatfrii.com—www.nfiwooa.orq September 30, 2005 OCT 0 3 2005 Brad Simons Gateway American Resources 9145 E. Kenyon Avenue, Suite 200 Denver, Colorado 80237 Dear Mr. Simons: As you know,the North Front Range Water Quality Planning Association held a public hearing on September 22, 2005,to consider a plan amendment that would designate Resource Colorado Water and Sanitation District as a Management/Operating Agency and designate a service area for the District. That plan amendment request was approved by the Association with the following conditions: • The District must submit a Utility Plan for review to the Association prior to the • consideration of any site applications. This plan should include such information as the District's financing ability, densities, loading projections, and ability to serve the area. • The approval is contingent on the approval of the Weld County Comprehensive Plan amendment. • Should Weld County choose not to approve a Comprehensive Plan amendment, the Association will have the ability to reconsider this approval. I have enclosed a draft copy of the minutes from the September meeting for you records. This amendment will be incorporated into the 2005 Update to the Management Plan. Please contact me at (970) 962-2785 if you have any questions. Sincerely, Connie O'Neill Manager Enclosures: (1) • ATTACHMENT A • WELD COUNTY 0O9 CODE ORDINANCE 2006-4 IN THE MATTER OF REPEALING AND REENACTING,WITH AMENDMENTS, CHAPTER 22 COMPREHENSIVE PLAN AND CHAPTER 26 MIXED USE DEVELOPMENT,OF THE WELD COUNTY CODE -PIONEER COMMUNITIES, INC. BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF THE COUNTY OF WELD, STATE OF COLORADO: WHEREAS,the Board of County Commissioners of the County of Weld,State of Colorado, pursuantto Colorado statute and the Weld County Home Rule Charter,is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS,the Board of County Commissioners, on December28,2000, adopted Weld County Code Ordinance 2000-1,enacting a comprehensive Code for the County of Weld,including the codification of all previously adopted ordinances of a general and permanent nature enacted on or before said date of adoption,and WHEREAS,the Board has received a request from Pioneer Communities,Inc„to amend Chapter 22 Comprehensive Plan;and staff has recommended an amendment to Chapter 26 Mixed Use Development of the Weld County Code. • NOW,THEREFORE, BE IT ORDAINED by the Board of County Commissioners of the County of Weld,State of Colorado,thatthe attached Future Land Use Map-PioneerCommunities, Inc., as authorized by Section 22-1-130 of the Weld County Code,be,and hereby is,Incorporated into and amended to Chapter 22 Comprehensive Plan. BE IT FURTHER ORDAINED BY THE Board of County Commissioners that Chapter 22 Comprehensive Plan and Chapter 26 Mixed Use Development of the Weld County Code be, and hereby are,repealed and re-enacted,with amendments, and the various Chapters are revised to read as follows, CHAPTER 22 COMPREHENSIVE PLAN Change throughout Chapter 22, as appropriate- "I-25 Mixed Use Development area"to "Mixed Use Development areas"with appropriate tense changes "Is"to "are"; "this"to "these", "has been"to "have been"; etc. Change throughout Chapter 22,as appropriate-"Mixed Use Developments"to"Mixed Use Development areas". Change throughout Chapter 22,specifically Section 22-1-150,as appropriate-"Mixed Use Development Area Map"or"Mixed Use Development Area Structural Land Use Map 2.1" to "f-25 Mixed Use Development Area 2.1 Land Use Map"or"Southeast Weld Mixed Use Development Area Structural Land Use Map". • 1111111111111111111111III 1I111111d111 III 111111111 NII ty, CO 2006-1561 1 of 34110009 R 0.00 D 0.00 Sieve Moreno Clerk&Recorder ORD2006-4 CC:AL LL O coot z 4 irgi 3 N < 1 x r w�< 0D0L Z0 E ON • N a <<O h '- J--a00t O • J �za- =O 5 Nw � ic z s5,g � r.==u �C � w ,2 5,O4., Luo O X(��u. m < W �n = w1O4 - W O < Vo Z 121 �',, o w K 4 c4. q Z NwFic.G. ,r.; V • e -h r C A 3 it s ES aaN 'vxii v trt" y F to `,t•4 2 S Y SJ. \N - S 3 n y4 {xyy{ ..,. r vn>, ` l '"'l�h,r,.,.� MR„.. _.z +nu� 6i 210MQ / h- R 1 / El a ?pa l 4vh,` .. :wt ,- ., v re 0 N J O A 0 Cg Z n 0 W W� Zv -I O w n. Apr 17 07 12:46p Town Of Keenesburg 3037320599 p.2 >=�F KEEHes-: � • �, ` TOWN OF KEENESBURG FOUNDED JULY, 1906 A MUNICIPAL CORPORATION SINCE CE JULY, 1 91 9 ISealliPVki l‘‘‘10/-CO\5Y April 13,2008 Ms. Connie O'Neill Manager North Front Range Water Quality Planning Association Civic Center 500 East Third Loveland,CO 80537 Re: Resource Colorado Water and Sanitation Metropolitan District Service Area Dear Ms.O' Neill, The Town of Keenesburg(Town)met with representatives from Resource Colorado Water and Sanitation Metropolitan District(Resource)in February of this year to discuss matters related to their proposed service area and the long term provision of sewer service in the areas between • Resource and Keenesburg. Subsequent to that meeting the Town received a revised map delineating the service areas for Hudson,Keenesburg,and Resource with a coordination area cenhaTto the vviEershid shared by these entities. We have no objection to Resource's proposed service area based upon the material and information presented to us over the past couple of months. Please contact me at(303)732-4281 or lannray@rtebb.net if you have any questions. Sincerely, Mayor Mark Gray Town of Keenesburg 1 4O SOUTH MAIN P.O. BOX 312 KEENESBURG, COLORADO 8O643 Page 1 of 1 • Lauren Benton From: "Nicole Adams"<nadams@jfcompanies.com> To: "Lauren Benton"<Ibenton@jacobsonsatchell.com>;"Matt Benak" <mbenak@jacobsonsatchell.co m> Sent: Wednesday,April 11,2007 2:00 PM Subject: FW:Pioneer Communities sewer service area From: Joe Racine[mailto:manager@hudsoncolorado.org] Sent: Wednesday,April 11, 2007 10:52 AM To: Connie O'Neill Cc: Nicole Adams; Jim Jones; Josh.McGibbon@Indfe.com Subject: Pioneer Communities sewer service area Connie,just a point of clarification. The Town of Hudson has no objection to the designation of a sewer service area for Pioneer Communities for their development boundaries,all of which are located north of County Road 22. Please call if you have questions. Joe Racine Town of Hudson Town Administrator • i 4/16/2007 /00 18:11 PAX x®010 . fr TOWN OF KEENEBBURG P.O.BOX 312 KEENESBURG, COLORADO 80643 303-732-4281 December 14,2005 Attu.:Brad Mueller • Weld County Planning Dept 918 10v'Street ' Greeley,Colo. 80631 Dear Mr.Mueller. RE: Weld CountyReferral Case Number 2005-XX Pioneer Comprehensive plan Amendment t The Town of Kee esburg finds no conflict of interest with the amendment to the Comprehensive • Plan.The Town o Keansburg has a concern with the amount of traffic generated from Pioneer Communities and ow that will effect the Intersection of I-76 and WCR 49. The Town in addition has an Interest the traffic pattern for the development and would like to see Pioneer Communities,Weld County and the Town work Jointly. • Mark D.Gray Mayor • r i • ISri RESOU RCE tijk COLORADO • WATER & SANITATION METROPOLITAN DISTRICT March 8, 2007 Mr. Joe Racine Town Administrator Town of Hudson 557 Ash St. PO Box 351 Hudson, CO 80642-0351 Re: Resource Colorado Water and Sanitation Metropolitan District Wastewater Utility Planning Areas Dear Mr. Racine, Attached is a revised map of the Resource Colorado Water and Sanitation Metropolitan District (RCWSMD) Service Area Map. The major modification to this map reflects the stated desires of RCWSMD, Hudson (through you) and Keenesburg(through Mark Gray) to coordinate planning of wastewater service in the common watershed we share. The area previously described as the RCWSMD "Ultimate Planning Area" has been changed to Wastewater Service Coordination Planning Area (WSCPA). • This new designation reflects our intent to cooperate with our neighboring utilities in coordinating service to areas where any of the three entities or one regional entity may present itself as the best solution for service. We would suggest we (RCWSMD, Hudson, and Keenesburg) meet a minimum of once a year to present our current and future plans in an effort to encourage discussion and cooperation regarding future service in the WSCPA. RCWSMD's wastewater utility service area (WUSA) has not changed and still encompasses the approximately 5,000 acre Pioneer development. Please contact me at (303)-843-9742 or nadams(c jfcompanies.com should any questions arise with regards to this revised Service Area Map. Sincerely, le ms, PE Utility Development Manager Enclosures: (1) i 9145 E. KENYON AVE., SUITE 200 • DENVER, CO 80237 • (303) 843-9742 ResourceColorado.org o: \,( f _ M S i. ,� _ �h �� + ,a ,t PROPOSED RESOURCE lid d „ ,, 7 . ' 1 PROPOSED WWTF 9 v . .3 COLORADO WASTEWATER tii1 \ LOCATION I % unLIIYSERVICE AREA (NSA) )1 r/ �'�' of . ' �� , mo %� ? t 1 WASTEWATER SERVICE , IqsiY(tètZ; ., , L l I r� sI/Ii'.i// I/ KEENESBURG'S �"L 1: ..iP7 q n -.9 EXISTING wusA../ io T...• HUDSON PROPOSED F i - 1 . 5 a .. r ` F '-,, c I 'yppp- BOUNDARY (UGB) J' . �'I it e ��) 'HUDSON'S �t - �` EXISTING HUDSON'S .474,11,04v4„,,,,„ '.�^ r 1_ ti-- T k IRl 'Iit , .a ®`'4' 1Pit c s Id • inliam[,� `. llila ��k. n '''Nla., :., ' e (.7.74 3 .k. �,�:: ', ; r I) Lie f4 I Sti �;' j; % �� _1ffitta:.•. {! . ..:,,,,,....,moo, , c ' Mk hilliffitim. Am.. EXISTING WUSA 3500* )., , ; i l‘ikt.ak iii - ?,; ;_;,aw. LEGEND /////////////// PROPOSED RESOURCE COLORADO WUSA — — — LOCHBUIE'S EXISTING WUSA KEENESBURG'S EXISTING WUSA a. •T $:T, i WASTEWATER SERVICE COORDINATION AREA /////////////// HUDSON'S EXISTING WUSA — — HUDSON'S PROPOSED UGB DATE: 2/20/2007 ®_Y'_-� SCALE: 1" = 3500' SERVICE AREA MAP 1 PROD. N0.:690-01 RCWSMD CONSULTANTS DRAWN:LAW PROCESS DESIGN REPORT • CHECKED:TTS WELD COUNTY,COLORADO FILE NO.: 690-01_FIG1-2.DWG FIGURE 1-2 RESOURCE 1� - COLORADO • WATER & SANITATION N I T A T I O N METROPOLITAN DISTRICT March 8, 2007 Mark Gray Mayor Town of Keenesburg PO Box 312 Keenesburg, CO 80643 Re: Resource Colorado Water and Sanitation Metropolitan District Wastewater Utility Planning Areas Dear Mayor Gray, Attached is a revised map of the Resource Colorado Water and Sanitation Metropolitan District (RCWSMD) Service Area Map. The major modification to this map reflects the stated desires of RCWSMD,Hudson(through Joe Racine) and Keenesburg(through you) to coordinate planning of wastewater service in the common watershed we share. The area previously described as the RCWSMD"Ultimate Planning Area"has been changed to Wastewater Service Coordination Planning Area(WSCPA). • This new designation reflects our intent to cooperate with our neighboring utilities in coordinating service to areas where any of the three entities or one regional entity may present itself as the best solution for service. We would suggest we (RCWSMD, Hudson, and Keenesburg) meet a minimum of once a year to present our current and future plans in an effort to encourage discussion and cooperation regarding future service in the WSCPA. RCWSMD's wastewater utility service area(WUSA)has not changed and still encompasses the approximately 5,000 acre Pioneer development. Please contact me at(303)-843-9742 or nadams( jfcompanies.com should any questions arise with regards to this revised Service Area Map. Sincerely, ow 'ms P • 1 Ay Development Manager Enclosures: (1) • 9145 E. KENYON AVE., SUITE 200 • DENVER, CO 80237 • (303) 843-9742 ResourceColorado.org ` _ h , �• I 1� ice. � r I - ! �. •� v '�/' `6. r PROPOSED RESOURCE d `; t I PROPOSED WWTF 31 , yCOLORADO WASTEWATER a ' _ LOCATION 1 UTILITY SERVICE AREA (WUSA)_ ,t WASTEWATER SERVICE -, ` f � � L,COORDINATION AREA r I�. Je % l 1 - C ? I I: r�/mot//Pie I KEENESBURG'S -------D" 1"-+, I _ EXISTING WUSA-* � `; 1 ,_;J HUDSON'S PROPOSED ' I J�% , T awe ' 1 DWI URBAN GROWTH I : / S \ ;) �•I BOUNDARY UGB ! L i ... r . � d • x - y HUDSON'S d• ` s r=�< i'S �J;.�"✓ a EXISTING WUSA ,y* , °xt ,-� �`�: 1 . •rq - tr {_� '../ • J)! r1d i, `i�or}_-.. ��, ( ! i i ,�. i \ i�/ ;1 rsr 1 1 ��. �� -we \- A * I Q. r�, �r �!3�5 x�' l . - , :� , , � �, _ ) _ 001 ei '�LOCHBUIE'S \A _rw's, - w r t �\ � t, I EXISTING WUSA lc' .\ _ v t. ` 3500 0 . 35001 �i _ �( 'v .� — a LEGEND /////////////// PROPOSED RESOURCE COLORADO WUSA — — — LOCHBUIE'S EXISTING WUSA KEENESBURG'S EXISTING WUSA al ; ,>;; WASTEWATER SERVICE COORDINATION AREA /////////////// HUDSON'S EXISTING WUSA - - - HUDSON'S PROPOSED UGB DATE: 2/20/2007 ® SCALE: 1" >s 3500' SERVICE AREA MAP Jacobson PROD. NO.:690-01 RCWSMD • CONSULTANTS DRAWN:RIB PROCESS DESIGN REPORT CHECKED:US WELD COUNTY,COLORADO FILE NO.: 690-01 FIG1-2.DWG FIGURE 1-2 Page 1 of 2 • Lauren From: "Nicole Adams" <nadams@jfcompanies.com> To: "Lauren Benton"<Ibenton@jacobsonsatchell.com>;"Matt Benak" <m ben ak@jacobsonsatchell.com> Sent: Friday, March 02, 2007 5:06 PM Subject: FW: Rev 1 of the WWUP for RC See Joe's feedback below. Nicole Adams,PE Utility Development Manager JF Companies 4643 S.Ulster St,Ste 1300 Denver 80237 (Office)303-843-9742 (Cell)303-472-8796 nadamsOjfcompanies.com nicole_poncelet@outwardboundalumni.org From: Joe Racine [mailto:manager@hudsoncolorado.org] Sent: Friday, March 02, 2007 10:31 AM To: Nicole Adams Cc: Jim Jones; Josh.McGibbon@indfe.com; Connie O'Neill Subject: RE: Rev 1 of the WWUP for RC Nicole,thanks for sharing this map with us. Without seeing the text that goes with the map we are limited in our • ability to respond in detail. The boundaries on the map are fine, understanding that Hudson will be doing a wastewater master plan this year and will likely be requesting further modification of our service area based on the physical realities described in that plan. Exactly what the"coordination area"means is of interest to us. And certain lands south of CR18 shown in your planning area might better be served by a Hudson plant. We will be exploring all alternatives and will look forward to working with you in crafting future service areas that best serve the public over the long term. Joe Racine From: Nicole Adams [mailto:nadams@jfcompanies.com] Sent: Thursday, March 01, 2007 12:16 PM To: manager@hudsoncolorado.org Subject: FW: Rev 1 of the WWUP for RC Joe, Would you please review the attached map and let me know if you have any problems with it. This map was developed based on the conversations we had with you and the Town of Keenesburg. Thanks, Nicole Adams,PE Utility Development Manager IF Companies 4643 S.Ulster St,Ste 1300 • Denver 80237 (Office)303-843-9742 (Cell)303.472-8796 3/14/2007 Page 2 of 2 nadams@jfcompanies.com • nicole_poncelet@outwardboundalumni.org From: Lauren Benton [mailto:lbenton@jacobsonsatchell.com] Sent: Tuesday, February 20, 2007 4:12 PM To: Nicole Adams Cc: Matthew Benak Subject: Rev 1 of the WWUP for RC Hi Nicole, I have attached Revision 1 of Sections 1 through 6 of the Wastewater Utility Plan. I have also attached Revision 1 of the Executive Summary and Figure 3-1. All of the revisions have been made using Track Changes, so you should be able to see everything that we have revised and a few additional comments. After NFRWQPA has completed their review,we will issue a final document as Revision 1. At that time, the cover, table of contents, footers, and appendices will be revised as necessary. Please give us a call after you have reviewed our changes and inserted your text,and we can discuss how to proceed. Lauren Benton Jacobson Satchell Consultants, Inc. 12640 West Cedar Drive, Suite A Lakewood,Colorado 80228 303-986-0733 (Phone) 303-986-0956(Fax) S • 3/14/2007 u. 10:Ut1 CAd . .. WJ Ultl Ait� , . ur f f7 TOWN`OF HUDSQ •„ _'•E, . • • • 557•ASK STREET,,P.O:BOX351,I&UosoN,c'•80642.0351, •. ..;.• � . `.LL `••• : Phone;303-536-9311 FAX 803,5 -4753.: - ` • • .:Debember 19;'2006. ' - . ' • • • . Weld County:bepartment of Planning Services ' - -. • • • • :: • • --A i Mr,Brfd`wttiell6r,.Assistant•Dire- r - • • . '91 ifOt':kve it'. .' Gr ley,.CoIb do`8063.1 R : Plgrleer ompreheilsive Plan: ridnient. IT. •-%.t eie:1 "ber2Utt6:i0C .: . ' . . . , : . _ . • ' D r Mr, Welt l,: . • - . - ' r W' appreclaie e:opportunity:.to`revl _ nd comment on.the applicatlo 'for amendritent s • • of he.Weld•CorintyComprehensive PI. n-:yPioneercommunIdee.it'IS r.understanding • • • A ••ti th•t the,•appiicdtiortfrom P Lnioneer;Co ' ltiea requests that an tuba devejopmdbt of."r • • - -"al ostnine.(9) iniremiesbepermltt , Within existing agricultural zopi g The proposed • de eibpnrent s pproxlinatelytwomile n�irtFiofthe• currentUrbanG oundaryoflhe • . Tawn,of Huds �•. - - Ttte••ambitious-development plan, submitted'by Pioneer Communities, Will Incorporate • - tellers.olrrewlyfo'rmedbryetto be fo edMetropolftan Districtsforthe provision.of various, -.;me pnlcfpai sorvtces:.lt is dUr. Conseos a , at such basic services have been'•traditionallyr.:. •: •.• - vltledcnrord.gffeotiveiy:bylncorpo; t communities-.within.Weld County The:use of ., metropolitan districts.operated by.CIO n mops can beprobiematic: The Town of Hudson:: WE s,previously serviced•,by a Metro of n,Sanitation District:for decades. The:failing:, ' inft astructure.poor maintenance and .e eyed capital investment within the Metropolitan '. ' District operations forced the, Town o Intervene.and ultimately-undertake control:of - . •' > peratfonsto'preservea'basic service o e_residents..After almost a decade pf operation, .the-c-Town continues to overcome o trld challenges created by the,past errors In . • meriadementoftheSanitatlon District,c nsequentfy,we find U slgnificanttonejefromour . ,-. 11 - - review of•the-referral that the •po... sed .metropolitan districts;.•within the amber - ' Davel00mentAret,...will ultimatelybe o etatied.hythefutureownersofthelandsdeveloped' . ii - , by:.Pioneer.:Communities- We also' u d suggest to you.that,the visions of a utopian - /05 15:10 FAX �ur� .. : • .. . _. . , . .. ..: ,'. "':develo ehtWithin:the Pioneer CommunitYProoect.are misgutdedl•through-the'extensive : : ustfof metropolitan•district's. . • :-•-..• . .. . :.` ' Vile•recpinmeridtoth9WeldCounty.PlanningC`omrnisskrn that Itwouldbenioreapr'a�cal-. .' . `- proposal-to anti*this area to an m existingmunicipal entity so'•that essential.communit�i: : .. •• : '.. • • services•would be•.preserved'and managed:by single.governance rather then:a-multitude- •. ,. .: ciftiomQownerassoofations:We encourage the.Commisslon to consider the ultimata fate ' of sirritiar cievelcpmet)ts such as Centennial in Douglas County andthe parallel Issues with •• : - thisproposal.:. • : :. _• • : •• • - . • . : . ' . in the absence o'fsingle gbverrienbeiltls;vtir espectatlon that the pioposedhdeVelopmhtit`. ..' ' ' .. 'Wilt negatively.lmpact County services within the region and particularly lit Hudsot►:•thould. ..• • '• .this proposal move forward through the Weld County planning,and amendinent•process• '- • • ' despite ourr objections I ;itp`currentforrn;,we respec liy request:thatreferral ald'p lgc.... .- .• hearing:notices.tiesertllto;Hudsonao'that we may c• ntinueto provide commer'ts wf ich :- protectthe yuaitty!.of l fe fo4 our community. • Singerely, • • • • .o , i ••. _ !• •" . .• . •'•Tamtiiy,McCain;chairrnar5' ' : . • •• . Hudson Planninacorirmiseion. - • • • • . . • . • • . •{Manning Gomitrissioia Towa Administrator ° I` , .. 1 . MEMO TO: Harvey E. Deutsch, President of Resource Colorado W&S Metropolitan District FROM: Bradley A. Simons, Gateway American Resources 4 A— TP DATE: September 16, 2005 PAGES: Two RE: Consolidation of Wastewater Treatment Works In accordance with our recent discussions regarding the last North Front Range Water Quality Planning Association meeting, attached is a copy of the Water Quality Control Division's Policy No. WQSA-5 regarding"Consolidation of Domestic Wastewater Treatment Works". The purpose of this policy is to ensure that the Division is consistently applying the requirements of both the Water Quality Control Act and site location and design approval regulations for domestic wastewater treatment works. The policy identifies eight factors to be evaluated when —considering-the feasibility of consolidation—service area,distance, water quality impacts, stream flow, threatened or endangered species,water rights, local plans and economic analysis. An economic analysis comparing the cost of consolidating treatment works versus the cost of • constructing separate facilities is only required if none of the seven other factors determine that consolidation is not feasible. Below is a summary of my evaluation of the seven other factors. Service Area: The proposed wastewater treatment service area, as well as the proposed facility, is not within the wastewater treatment service area of a district or municipality providing wastewater treatment service. Distance: The distance to the closest existing/proposed wastewater treatment works, or sewer line capable of carrying the proposed flows to an existing treatment works,is greater than five miles,therefore an analysis of cost effectiveness of consolidation is not necessary. Technically, as the distance is in excess of five miles,no further analysis of consolidation is required,but we will address the remaining factors. Water Quality Impacts: As Resource Colorado is proposing a state-of-the-art,mechanical wastewater treatment facility, consolidation with either of the two closest existing wastewater treatment works(aerated lagoons)would not improve the level of wastewater treatment and will thereby not result in improvements to surface and/or ground water quality. Stream Flow: Consolidation with either of the two closest existing wastewater treatment works could negatively impact flows in the receiving stream segments of the two existing facilities. The Town of Hudson currently discharges to a privately owned irrigation ditch that may have limited capacity in consideration of the proposed flows. The Town of Keenesburg currently discharges to a privately owned lake that may have limited capacity in consideration of the • proposed flows. G • Memo to Harvey E. Deutsch September 16,2005 Page Two Threatened or Endangered Species: The intent of this factor is to deter consolidation if threatened or endangered species inhabit or utilize the only site which could serve as a consolidated treatment works, or a site through which interceptor lines would have to pass to reach a consolidated treatment works site. Water Rights: Consolidation with either of the two closest existing wastewater treatment works would alter the discharge of effluent in a manner which would impair the water rights of Resource Colorado. Resource Colorado intends to discharge its effluent in the Box Elder Creek Drainage Basin,while the Town of Hudson and the Town of Keenesburg discharge their effluent in the Beebe Seep Drainage Basin and the Lost Creek Drainage Basin,respectively. Local Plans: Consolidation,or lack of consolidation,with either of the two closest existing wastewater treatment works is not in direct conflict with a specific recommendation of either municipality's comprehensive plan or an approved 208 Water Quality Management Plan. The owner of the property(Pioneer Communities) for the proposed wastewater treatment service area, as well as the proposed facility,has submitted an application to amend the comprehensive • plan of Weld County. In accordance with the Colorado Water Quality Control Act,the Water Quality Control Division is required to encourage the consolidation of wastewater treatment facilities wherever feasible. However,based upon the factors identified in Policy No. WQSA-5 and summarized above, consolidation of Resource Colorado's proposed wastewater treatment facility into either of the two closest existing wastewater treatment works is not considered feasible. Should you have any comments or questions,please contact me. • Colorado Water Quality Control Division • Policy No.: WQSA-5 WATER QUALITY Approved By: SITE APPLICATIONS Effective Date: Revision No.: Revision Date: Policies & Procedures Page 1 of 3 POLICY NUMBER 5: CONSOLIDATION OF DOMESTIC WASTEWATER TREATMENT WORKS Purpose: To ensure that the Division is consistently applying the requirements of both the Water Quality Control Act and site location and design approval regulations for domestic wastewater treatment works. Procedure: The following factors will be used to evaluate the feasibility of consolidation. SERVICE AREA- If the site or wastewater treatment service area of a proposed facility is within the wastewater treatment service area (as defined in an adopted local comprehensive plan, or • approved 208 water quality management plan)of a district or municipality providing wastewater treatment service, the applicant should be that district or municipality and the application should provide for consolidation of either treatment facilities or management and operation of the separate facilities. An exception may be granted if the proponent is an existing district or municipality also identified in the respective plan(s). DISTANCE - If the distance to the closest existing/proposed wastewater treatment works, or from a sewer line capable of carrying the proposed flows to an existing treatment works, is less than five miles, an analysis of the cost effectiveness of consolidation with that treatment works is to be prepared. If the distance is in excess of five miles, no further analysis of consolidation is required. WATER QUALITY IMPACTS—Subject to the above factors, where consolidation can improve the level of wastewater treatment and thereby result in improvements to surface and/or groundwater quality, further analysis of consolidation should be explored. STREAM FLOW- If the consolidation of treatment works would alter flows in a stream or stream segment or transfer a sufficient amount of water to another stream or stream segment so as to i Page 1 of 3 Colorado Water Quality Control Division • Policy No.: WQSA-5 WATER QUALITY Approved By: SITE APPLICATIONS Effective Date: Revision No.: Revision Date: Policies & Procedures Page 2 of 3 POLICY NUMBER 5: CONSOLIDATION OF DOMESTIC WASTEWATER TREATMENT WORKS result in (i)overwhelming adverse environmental effects on either stream, or(ii)the lowering of the effluent limits of other treatment works so as to cause the need to install additional advanced secondary or tertiary treatment processes, no further analysis of consolidation is required. THREATENED or ENDANGERED SPECIES- If threatened or endangered species inhabit or utilize the only site which could serve a consolidated treatment works or a site through which interceptor lines would have to pass to reach a consolidated treatment works site, such evidence shall be presented and no further analysis of consolidation is required. WATER RIGHTS - If the consolidation of treatment works would . alter the discharge of effluent in a manner which would impair the water rights of one of the parties to the consolidation, evidence of the same shall be presented and no further analysis of consolidation with those parties is required. LOCAL PLANS - If consolidation is in direct conflict with a specific recommendation of the county's or city's Comprehensive Plan or an approved 208 Water Quality Management Plan, and the entity responsible for the development of the respective plan ret,ommends against wnsottdation;no further er ratys1nS consolidation is required. ECONOMIC ANALYSIS- Unless another factor contained in these criteria results in a determination that consolidation is not feasible, an analysis comparing the cost of consolidating the treatment works versus the cost of constructing separate facilities shall be prepared. The analysis shall include the following costs: land acquisition, capital construction (including such unique construction expenses as flood-proofing, water rights compliance, and wetland mitigation), interceptors and lift stations, treatment plant expansion and/or upgrade, debt retirement expenses, and operation and maintenance costs for a minimum period of 20 years for each alternative. Other unique costs specific to one or more of the • Page 2 of 3 Colorado Water Quality Control Division • Policy No.: WQSA-5 WATER QUALITY Approved By: SITE APPLICATIONS Effective Date: Revision No.: Revision Date: Policies & Procedures Page 3 of 3 POLICY NUMBER 5: CONSOLIDATION OF DOMESTIC WASTEWATER TREATMENT WORKS alternatives under consideration may also be appropriate for consideration, i.e. value of water for reuse either by the applicant or through sales to another party. Cost comparisons shall be made on the basis of cost per 1,000 gallons treated as well as net present worth. If the cost of consolidation exceeds the cost of separate plant construction by more than 30%, no further analysis of consolidation is required. Background: The Colorado Water Quality Control Act [C.R.S. 25-8-702 (2)] states, "In evaluating the suitability of a proposed site location for a - domestic wastewater treatment works, the Division shall: (c) Encourage the consolidation of wastewater treatment • facilities whenever feasible." Reference: "Colorado Water Quality Control Act" 25-8-702, "Approval for commencement of construction". Regulation No. 22 "Site Location and Design Approval Regulations for Domestic Wastewater Treatment Works," Colorado Water Quality Control Act, 5 CCR 1002-22, 25-8-702 C.R.S. • Page 3 of 3 • •: ;•,': RETY'A KCONSULTING DRAFT TECHNICAL ON OF M• COLM • RNIE MEMORANDUM To: Nicole Adams/Resource Colorado Water and Date: March 14, 2007 Sanitation Metropolitan District From: Carol Malesky Re: Preliminary Tap Fees and Wholesale Wastewater and Reuse Rates Introduction As part of the process of developing a wastewater utility in Southeast Weld County, Resource Colorado Water and Sanitation Metropolitan District (RCMD) authorized Red Oak Consulting (Red Oak)to prepare a preliminary schedule of wastewater and reuse rates. Red Oak also calculated the necessary wastewater and reuse water tap fees that should be collected from new customers to pay for the costs of growth. . Summary of Approach Red Oak developed user rate schedules for the planned wastewater and reuse utilities from 2008 through 2012 based on RCMD's projected annual capital improvement costs, operation and maintenance (O&M)expenses,projections of revenue bond debt service, and growth in equivalent residential units (ERUs) and flows. The preliminary wastewater treatment plant design,construction, and O&M costs were provided by Jacobson Satchell Consultants (Engineer). Several assumptions were used in the analysis and are outlined below. Assumptions Used in the Analysis Assumptions behind the preliminary rate and fee analysis for RCMD's wastewater utility include the following: 1. RCMD's annual O&M expenses developed by the Engineer reflect the flows each year as a percentage of the plant's design capacity and percent of the year the plant is in service. 2. Estimated preliminary design and construction costs include two plant phases; Phases IA and IB are expected to serve 2,500 ERUs. • • 100 Fillmore Street • Suite 200 • Denver,CO 80206 • T 303-316-6500 • F 303-316-6599 • www.redoakconsulting corn Page 2 • 3. Tap fees were calculated for Phases IA and IB and are in compliance with the Colorado Revised Statutes 29-20-104.5 (Impact Fees). Total interest costs of issuing debt to finance Phase I were included in the tap fee. 4. The projected total number of ERUs beginning in 2008 is 89; an additional 18 prepaid taps in 2008 were projected to be necessary to meet specific revenue requirements. 5. Annual growth in ERUs is equal to the values determined in the Wastewater Utility Plan. 6. Revenue bonds are issued in 2007 for$10.8 million including 2.0 percent issuance costs and 10 percent reserve requirement for a 30-year term at a 7.0 percent interest rate. 7. Debt service coverage is assumed at 125 percent of the annual debt service payment. 8. A developer advance of$466,974 is assumed to assist with O&M costs in the first three years. The advance will be repaid in 2011 with four years of • accrued interest. 9. The goal for annual minimum wastewater and reuse fund balances is equal to two months of O&M expenses and is achieved by 2010. Preliminary Rate and Fee Results Incorporating the assumptions listed above into the tap fee and rate analyses results in the rates and fees presented in the following tables. Table 1 presents the recommended tap fees per ERU. The growth-related capital improvements include the costs for Phase I of the treatment plant plus expected interest costs incurred when financing the improvements with revenue bonds. Table 1. Proposed Tap Fees for Phase I of RCMD's Wastewater and Reuse Utility Wastewater Fee per ERU Reuse Fee per ERU Growth-Related Capital Improvements $19,575,920 $4,893,980 Total New ERUs 2,500 2,500 Tap Fee per ERU $7,830 $1,958 i Page 3 • Table 2 presents the preliminary wholesale wastewater rates and the reuse rates per thousand gallons. The wholesale rate per thousand is proposed to begin at$5.90 per kgal in 2008 and eventually being reduced in 2011 and 2012 due to the utility approaching economies of scale as the wastewater flows increase. The projected reuse rates are stable until 2011 where a slight increase is introduced. Table 2. 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U yc a) a) Z > 8n Ti m a D J .a)) LT) N ` o O a N N E a) d Q. i-CD O 0 CL W W W COX 2 Resouce Colorado Water San Metro Dist—DRAFT • Table 27 Resouce Colorado Water&San Metro Dist Wastewater Utility Financial Plan Calibration Table fUescnption I FY2007 I FY2008 I FY2009 I FY2010 ( FY2011 I FY2012 I Financial Performance Coverage Test(Including Tap Fees) NA 125 1.44 2.06 3.34 4.30 Minimum Coverage 1.25 1.25 1.25 1.25 1.25 1.25 Additional Funds Needed to Meet Coverage 0 0 0 0 0 0 Revenue Required from Rates 0 52,115 136,113 240,956 335,765 444,863 Percent Increase/Decrease from Previous N/A 0.0% 161.2% 77.0% 39.3% 32.5% OMR Ratio 0.00 0.66 0.47 0.77 0.49 0.64 OMR Target 0.00 0.50 0.50 0.60 0.70 0.80 Additional Funds Needed for OMR Goal 0 0 6,552 0 181,696 148,768 Debt Service as%of Revenue Requirements 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% Operating Costs as%of Revenue Requirements 0.00% 61.51% 92.41% 91.71% 95.75% 82.88% Cash Funding of CIP as%of Revenue Requirements 0.00% 38.49% 0.00% 0.00% 0.00% 0.00% Funding of Reserves as%of Revenue Requirements 0.00% 0.00% 7.59% 8.29% 4.25% 17.12% Total 0.00% 100.00% 100.00% 100.00% 100.00% 100.00% Ending Fund Balances • Wastewater Fund 0 0 20,382 45,252 59,539 135,933 Target Wastewater Fund Balance 0 0 20,382 45,252 52,975 60,811 Difference from Target Fund Balance 0 0 0 0 6,564 75,121 Reuse Fund 0 7,239 12,073 25,361 28,299 100,561 Target Reuse Fund Balance 0 0 12,073 25,361 26,904 28,501 Difference from Target Fund Balance 0 7,239 0 0 1,395 72,060 Capital Construction Fund 8,705,290 0 591,560 1,608,241 2,091,999 4,802,797 Target Capital Construction Fund Balance 01 o f o I 0 I 01 0 Difference from Target Fund Balance 8,705,290 0 591,580 1,608,241 2,091,999 4,802,797 Combined Fund Balances 8,705,290 7,239 624,015 1,678,855 2,179,838 5,039,291 Action Items New Debt issued-Subject to Bond Ordinance 9,500,000 0 0 0 0 0 New Debt issued-Not Subject to Ordinance 0 0 0 0 0 0 Transfer from Operating Fund to Capital Construction-WW 0 42,730 0 0 0 0 Transfer from Operating Fund to Capital Construction-Reuse 0 12,285 0 0 0 0 Wastewater Rate Revenue Increase 0.0% 0.0% 0.0% 0.0% -15.2% -10.0% Reuse Rate Revenue Increase 0.0% 0.0% 161.4% 77.0% 84.5% 47.2% This Year is Currently... Calibrated 1 Calibrated 1 Uncalibrated 1 Calibrated 1 Uncalibrated 1 Uncalibrated This Financial Plan is Currently CALIBRATED • Red Oak Consulting 3/14/2007 § § q ~a° « ! R . . ; n 9 ^ ^• a N 0 IA - \ / � 8 . ~a° ! ! m g ,,•• ., ^ : ; & 7 $ y ;; } ~ 2 a a - ! , a * k fr°! % a N J GoN = NN ;B ! I ° ; E ! . ` - . - .r { a ~g° r ! K 3®§ : § 3 § N : © q \ ° / a ! \ ) \ |§ 4G ~G` : ! ` . `4Z R 12 s2 ^ ; R . \ ` \ - NI § ! G ^y8. 8 S`4K 28 8 . /! / ` { w\ ! } § / " ; ° ® ` : r§!§# !; N / 7 \ y2; / \ / ~ a ` ^ ; il ! : G aa` k ! ! R~! lEf9 \ :� !r\Z : 2% r ! ` . .a " . . - - - 8 -0ae r « i . ° & ~ # Q a2 / ` = y ! . . . & § § - R° / ! 9C# @ ; ! a a ; ON ; .a 8i & 2 © _ ` ° a r = __ =2==r ! r : o ©«` 455 ~ QQ 00 ` ( \ (' \ O O 8 : , ) . ! \) p ;;! ! }$ ! S ! • t§ )!) | . 8!! c ` 1 §§\ ) ) !! ! > ° !` „ � : l :3 // < / 296y/ : t ; /i§ / ! ! ) \ ` . 81g= to '° .HH #! ! i H? 2 : • Page 2 of 17 Permit No.COR-030000 CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION ACTIVITY AUTHORIZATION TO DISCHARGE UNDER THE COLORADO DISCHARGE PERMIT SYSTEM In compliance with the provisions of the Colorado Water Quality Control Act,(25-8-101 et seq.,CRS, 1973 as amended)and the Federal Water Pollution Control Act,as amended(33 U.S.C. 1251 et seq.;the "Act"),this permit authorizes the discharge of stormwater associated with construction activities certified under this permit,from those locations specified throughout the State of Colorado to specified waters of the State. Such discharges shall be in accordance with the conditions of this permit. This permit specifically authorizes the facility listed on page 1 of this permit to discharge stormwater associated with construction activity,as of this date,in accordance with permit requirements and conditions set forth in Parts I and II hereof. All discharges authorized herein shall be consistent with the • terms and conditions of this permit. This permit and the authorization to discharge shall expire at midnight,June 30,2007. Issued and Signed this day of COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT J.David Holm,Director Water Quality Control Division i TABLE OF CONTENTS . PART I A. COVERAGE UNDER THIS PERMIT 3 1. Authority to Discharge 3 a) Applicable Sections 3 2. Industries Covered Under this Permit 3 a) Definitions: 3 b) Types of Activities Covered by this Permit: 3 3. Permit Coverage Without Application 3 a) Applicable Sections 3 b) Local Agency Authority 3 c) Permit Coverage Termination 4 d) Compliance with Qualifying Local Program 4 e) Full Permit Applicability 4 4. Application, Due Dates 4 a) Application Due Dates 4 b) Summary of Application 4 5. Permit Certification Procedures 4 a) Request for Additional Information 5 b) Automatic Coverage 5 c) Individual Permit Required 5 d) Temporary Coverage 5 e) General vs. Individual Permit Coverage 5 f) Local Agency Authority 5 6. Inactivation Notice 5 7. Transfer of Permit 5 8. Permit Expiration Date 6 9. Individual Permit Criteria 6 B. CONTENTS OF THE STORMWATER MANAGEMENT PLAN 6 1. Site Description 7 • 2. Site Map 7 3. BMPs for Stormwater Pollution Prevention 7 a) Erosion and Sediment Controls 7 b) Materials Handling and Spill Prevention. 8 4. Final Stabilization and Longterm Stormwater Management 8 5. Other Controls 8 6. Inspection and Maintenance 8 C. TERMS AND CONDITIONS 8 1. General Limitations 8 2. Prohibition of Non-stormwater Discharges 9 3. Releases in Excess of Reportable Quantities 9 4. Stormwater Management Plans 9 a) Signatory Requirements 9 b) SWMP Review/Changes 9 5. Inspections 9 a) Active Sites 9 b) Completed Sites 10 c) Winter Conditions 10 6. Reporting 10 7. SWMP Submittal Upon Request 10 D. ADDITIONAL DEFINITIONS 10 -2a- • TABLE OF CONTENTS (cont.) • E. GENERAL REQUIREMENTS 11 1. Signatory Requirements 11 2. Retention of Records 12 PART II A. MANAGEMENT REQUIREMENTS 12 1. Change in Discharge 12 2. Special Notifications - Definitions 12 3. Noncompliance Notification 13 4. Submission of Incorrect or Incomplete Information 13 5. Bypass 13 6. Upsets 13 7. Removed Substances 14 8. Minimization of Adverse Impact 14 9. Reduction, Loss, or Failure of Treatment Facility 14 10. Proper Operation and Maintenance 14 B. RESPONSIBILITIES 14 1. Inspections and Right to Entry 14 2. Duty to Provide Information 15 3. Transfer of Ownership or Control 15 4. Modification, Suspension, or Revocation of Permit By Division 15 5. Permit Violations 16 6. Legal Responsibilities 16 7. Severability 16 8. Renewal Application 17 9. Confidentiality 17 10. Fees 17 11. Requiring an Individual CDPS Permit 17 • -2b- I PART I Page 3 Permit No. COR-030000 PART I A. COVERAGE UNDER THIS PERMIT 1. Authority to Discharge Under this permit,construction activities,including clearing,grading,and excavation,are granted authorization to discharge stormwater associated with construction activities into waters of the state of Colorado. a. Applicable Sections: This permit is made up of several parts,not all of which apply to all permittees. The permittee will be responsible for determining and then complying with the applicable sections,depending upon whether or not a Qualifying Local Program covers the site. For sites not covered by a Qualifying Local Program, all Parts of the permit except Part LA.3 apply. 2. Industries Covered Under this Permit a) Definitions: I) Stormwater'.Stormwater is precipitation-induced surface runoff. 2) Construction activity: Construction activity includes clearing,grading and excavation activities. Construction does not include routine maintenance performed by public agencies,or their agents to maintain original line and grade,hydraulic capacity,or original purpose of the facility. 3) Small construction activity: Stormwater discharge associated with small construction activity means the discharge of stormwater from construction activities that result in land disturbance of equal to or greater than one acre and less than five acres.Small construction activity also includes the disturbance of less than one acre of total land area that is part of a larger common plan of development or sale,if the larger common plan will ultimately disturb equal to or greater than one and less than five acres. 4) Qualifying Local Prograrp: This permit includes conditions that incorporate qualifying local erosion and sediment control program(Qualifying Local Program)requirements by reference. A Qualifying Local Program is a municipal stormwater program for stormwater discharges associated with small construction activity that has been formally approved by the Division. 5) Other Definitions: Definitions of additional terms can be found in Part I.D.of this permit. b) Types of Activities Covered by this Permit: This permit may authorize all new and existing discharges of stormwater associated with construction activity. This includes stormwater discharges from areas that are dedicated to producing earthen materials,such as soils,sand and gravel,for use at a single construction site. This permit also includes stormwater discharges from dedicated asphalt batch plants and dedicated concrete batch plants. This permit does not authorize the discharge of mine water or process water from such areas. 3. Permit Coverave Without Application—for small construction activities under a Qualifying Local Program oa If a construction site is within the jurisdiction of a Qualifying Local Program,the operator of the construction activity is authorized to discharge stormwater associated with small construction activity under this general permit without the submittal of an application to the Division. a) Applicable Sections: For sites covered by a Qualifying Local Program,only Parts I.A.I, I.A.2, 1.A.3,I.C.I, I.C.2,I.C.3,I.D and Part If of this permit,with the exception of Parts'LA.],11.8.3,11B.8,and 11.810,apply. b) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict,or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. • PART I • Page 4 Permit No. C0R-030000 A. COVERAGE UNDER THIS PERMIT(coot.) c) Permit Coverage Termination: When a site has been finally stabilized,coverage under this permit is automatically terminated. d) Compliance with Qualifying Local Program: A construction site operator that has authorization to discharge under this permit under Part I.A.3 shall comply with the requirements of the Qualifying Local Program with jurisdiction over the site. e) Full Permit Applicability: The Division may require any owner or operator within the jurisdiction of a Qualifying Local Program covered under this permit to apply for and obtain coverage under the full requirements of this permit The owner or operator must be notified in writing that an application for full coverage is required. When a permit certification under this permit is issued to an owner or operator that would otherwise be covered under Part I.A.3 of this permit,the full requirements of this permit replace the requirements as per Part I.A.3 of this permit,upon the effective date of the permit certification. A site brought under the full requirements of this permit must still comply with local stormwater management requirements,policies or guidelines as required by Part I.C.l.h of this Permit. 4. AOuliation,Due Dates a) Application Due Dates:At least ten days prior to the commencement of construction activities,the operator of the construction activity shall submit an application form as provided by the Division,with a certification that the Stonnwater Management Plan(SWMP)is complete. One original completed discharge pennit application shall be submitted,by mail or hand delivery,to: Colorado Department of Public Health and Environment Water Quality Control Division • WQCD-P-B2 4300 Cherry Creek Drive South Denver,Colorado 80246-1530 b) Summary of Application: The application requires,at a minimum,the following: 1) The operator's name,address,telephone number,tax payer identification number(or employer identification number), and the status as Federal,State,private,public or other entity; 2) Name,county and location of the construction site,including the latitude and longitude to the nearest 15 seconds of the approximate center of the construction activity; 3) A brief description of the nature of the construction activity; 4) The anticipated starting date of the project and the anticipated schedule of completion 5) Estimates of the total area of the site,the area of the site that is expected to be disturbed,and the total area of the larger common plan of development or sale to undergo disturbance; 6) The name of the receiving water(s),or the municipal separate storm sewer system and the ultimate(i.e., named)receiving water(s); 7) Certification that the SWMP for the construction site is complete(see Part I.B.below);and 8) The signature of the applicant signed in accordance with Part I.E.I of this permit. 5. Permit Certification Procedures If the general permit is applicable to the applicant's operation,then a certification will be developed and the applicant will be authorized to discharge stormwater under this general permit. I Page I • Page 5 Permit No. COR-030000 A. COVERAGE UNDER THIS PERMIT(cont) a) Request for Additional:Informatioa: The Division shall have up to ten days after receipt of the above information to request additional data and/or deny the authorization for any particular discharge. Upon receipt of additional information,the Division shall have an additional tea days to issue or deny authorization for the particular discharge. (Notification of denial shall be by letter,in cases where coverage under an alternate general permit or an individual permit is required,instead of coverage under this permit.) b) Automatic Coverage: If the applicant does not receive a request for additional information or a notification of denial from the Division dated within ten days of receipt of the application by the Division,authorization to discharge in accordance with the conditions of this permit shall be deemed granted. c) Individual Permit Required: If,after evaluation of the application(or additional information,such as the SWMP),it is found that this general permit is not applicable to the operation,then the application will be processed as one for an individual permit. The applicant will be notified of the Division's decision to deny certification under this general permit. For an individual permit,additional information may be requested,and 180 days will be required to process the application and issue the permit. d) Temporary Coverage: Notwithstanding Parts 1.A.5.a-c,above,the Division reserves the right to temporarily cover stormwater discharge from construction activity under general permits,even though individual permit coverage may be more appropriate. Certification of these activities under a general permit does not in any way infringe on the Division's right to revoke that coverage and issue an individual permit or amend an existing individual permit. e) General vs.Individual Permit Coverage: Any owner or operator authorized by this permit may request to be excluded from the coverage of this permit by applying for an individual CDPS permit. The owner or operator shall submit an individual application,with reasons supporting the request,to the Division at least 180 days prior to any discharge. • f) Local Agency Authority: This permit does not pre-empt or supersede the authority of local agencies to prohibit, restrict,or control discharges of stormwater to storm drain systems or other water courses within their jurisdiction. 6. Inactivation Notice When a site has been finally stabilized in accordance with the SWMP,the operator of the facility must submit an Inactivation Notice that is signed in accordance with Part I.E.I.of this permit. The Inactivation Notice form is available from the Division and includes: a) Permit certification number, b) The pernittee's name,address,telephone number, c) Name,location,and county for the construction site for which the application is being submitted. d) Certification that the site has been finally stabilized,and a description of the final stabilization method(s). An inactivation form may not be required for small construction activities if application was made for coverage with a completion date less than 12 months from the start of construction activity. in such cases,permit certification may be authorized for a predetermined period from 3 to 12 months. The permit certification will include the automatic expiration date for permit coverage. If permit coverage beyond that date is needed(i.e.,the site has not been finally stabilized),the permittee must submit an extension request form to the Division at least 10 days prior to the expiration date. 7. Transfer of Permit When responsibility for stormwater discharges at a construction site changes from one individual to another,the permittee shall submit a completed Notice of Transfer and Acceptance of Terms of a Construction General Stormwater Discharge Permit Certification that is signed in accordance with Part I.E.I.of this permit. The Notice of Transfer form is available from the Division and includes: PART I Page 6 • Permit No. C0R-030000 A. COVERAGE UNDER THIS PERMIT(cons) a) Permit certification number. b) Name,location,and county for the construction site for which the application is being submitted. c) The current permittee's name,address,telephone number and the status as Federal,State,private,public or other entity. d) The new permittee's name,address and telephone number and the status as Federal,State,private,public or other entity. e) Certification that the new permittee has reviewed the permit and SWMP and accepts responsibility,coverage and liability for the permit. f) Effective date of transfer. If the new responsible party will not complete the transfer form,the permit may be inactivated if the pennittee has no legal responsibility,through ownership or contract,for the construction activities at the site. In this case,the new operator would be required to obtain permit coverage separately. 8. Permit Expiration Date Authorization to discharge under this general permit shall expire on June 30,2007. The Division must evaluate and reissue this general permit at least once every five years and must recertify the applicant's authority to discharge under the general permit at such time. Any permittee desiring continued coverage under the general permit must reapply by March 31,2007. The Division will determine if the applicant may continue to operate under the terms of the general permit. An individual permit will be required for any facility not reauthorized to discharge under the reissued general pemut. 9. )ndividual Permit Criteria Aside from the activity type,the Division may use other criteria in evaluating whether an individual permit is required • instead of this general permit. This information may come from the application,SWMP,or additional information as requested by the Division,and includes,but is not limited to,the following: a) the quality of the receiving waters(i.e.,the presence of downstream drinking water intakes or a high quality fishery,or for preservation of high quality water); b) the size of the construction site; c) evidence of noncompliance under a previous permit for the operation; d) the use of chemicals within the stormwater system. In addition,an individual permit may be required when the Division has shown or has reason to suspect that the stonnwater discharge may contribute to a violation of a water quality standard. B. CONTENTS OF THE STORMWATER MANAGEMENT PLAN The SWMP shall be prepared in accordance with good engineering,hydrologic and pollution control practices. (The SWMP need not be prepared by a registered engineer.) The main objective of the plan shall be to identify Best Management Practices (BMPs)which when implemented will meet the terms and conditions of this permit(see Part I.C.,below). The plan shall identify potential sources of pollution(including sediment)which may reasonably be expected to affect the quality of stormwater discharges associated with construction activity from the facility. In addition,the plan shall describe and ensure the implementation of BMPs which will be used to reduce the pollutants in stonnwater discharges associated with construction activity. Construction operations must implement the provisions of the SWMP required under this part as a condition of this permit. The SWMP shall include the following items,at a minimum: PART I Page 7 • Permit No. COR-030000 B. CONTENTS OF THE STORMWATER MANAGEMENT PLAN(cont.) 1. Site Description Each plan shall provide a description of the following: a) A description of the construction activity. b) The proposed sequence for major activities. c) Estimates of the total area of the site,and the area of the site that is expected to undergo clearing,excavation or grading. d) An estimate of the runoff coefficient of the site before and after construction activities are completed and any existing data describing the soil,soil erosion potential or the quality of any discharge from the site. e) A description of the existing vegetation at the site and an estimate of the percent vegetative ground cover. f) The location and description of any other potential pollution sources,such as vehicle fueling,storage of fertilizers or chemicals,etc. g) The location and description of any anticipated non-stormwater components of the discharge,such as springs and landscape irrigation return flow. h) The name of the receiving water(s)and the size,type and location of any outfall or,if the discharge is to a municipal separate storm sewer,the name of that system,the location of the storm sewer discharge,and the ultimate receiving water(s). 2. $ite Man Each plan shall provide a generalized site map or maps which indicate: - construction site boundaries - all areas of soil disturbance areas of cut and fill - areas used for storage of building materials,soils or wastes - location of any dedicated asphalt or concrete batch plants - location of major erosion control facilities or structures • - springs,streams,wetlands and other surface waters - boundaries of 100-year flood plains,if determined. 3. BMPs for Stormwater Pollution Prevention The plan shall include a narrative description of appropriate controls and measures that will be implemented before and during construction activities at the facility. The plan shall clearly describe the relationship between the phases of construction and the implementation and maintenance of controls and measures. For example,which controls will be implemented during each of the following stages of construction:clearing and grubbing necessary for perimeter controls,initiation of perimeter controls,remaining clearing and grubbing,road grading,storm drain installation,final grading,stabilization,and removal of control measures. The description of controls shall address the following minimum components: a) Erosion and Sediment Controls. 1) Structural Practices. A description of structural site management practices which will minimize erosion and sediment transport. Practices may include,but are not limited to:straw bales,silt fences,earth dikes, drainage swales,sediment traps,subsurface drains,pipe slope drains,inlet protection,outlet protection, gabions,and temporary or permanent sediment basins. 2) Non-Structural Practices. A description of interim and permanent stabilization practices,including site- specific scheduling of the implementation of the practices. Site plans should ensure that existing vegetation is preserved where possible and that disturbed areas are stabilized. Non-structural practices may include,but are not limited to:temporary seeding,permanent seeding,mulching,geotextiles,sod stabilization,vegetative buffer strips,protection of trees,and preservation of mature vegetation. • PART I Page 8 • Permit No. COR-030000 B. CONTENTS OF THE STORMWATER MANAGEMENT PLAN(com.) b) Materials Handling and SniII Prevention. The SWMP shall identify any procedures or significant materials(see definitions at Part I.D.)handled at the site that could contribute pollutants to runoff. These could include sources such as:exposed storage of building materials,fertilizers or chemicals;waste piles;and equipment maintenance or fueling procedures. Areas or procedures where potential spills can occur shall have spill prevention and response procedures identified. Measures to control stormwater pollution from dedicated concrete batch plants or dedicated asphalt batch plants covered by this certification,must be identified in the SWMP. 4. Jtinal Stabilization and Longterm Stormwater Management The plan shall include a description of the measures used to achieve final stabilization and measures to control pollutants in stormwater discharges that will occur after construction operations have been completed. Final stabilization is reached when all soil disturbing activities at the site have been completed,and uniform vegetative cover has been established with a density of at least 70 percent of pre-disturbance levels,or equivalent permanent, physical erosion reduction methods have been employed. For purposes of this permit,establishment of a vegetative cover capable of providing erosion control equivalent to pre- existing conditions at the site can be considered final stabilization. The permittee will be responsible for providing to the Division the documentation to make this comparison. The Division may,after consultation with the permittee and upon good cause,amend the final stabilization criteria for specific operations. 5. Other Controls • The plan shall include a description of other measures to control pollutants in stormwater discharges,including plans for waste disposal and limiting off-site soil tracking. 6. Inspection and Maintenance The plan shall include a description of procedures to inspect and maintain in good and effective operating condition the vegetation,erosion and sediment control measures and other protective measures identified in the SWMP. C. TERMS AND CONDITIONS 1. General Limitations The following limitations shall apply to all discharges covered by this permit: a) Stonnwater discharges from construction activities shall not cause or threaten to cause pollution,contamination or degradation of State waters. b) Concrete wash water shall not be discharged to state waters or to storm sewer systems. c) Bulk storage structures for petroleum products and other chemicals shall have adequate protection so as to contain all spills and prevent any spilled material from entering State waters. d) No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by the Division. In granting the use of such chemicals,special conditions and monitoring may be addressed by separate letter. e) The Division reserves the right to require sampling and testing,on a case-by-case basis,in the event that there is reason to suspect that compliance with the SWMP is a problem,or to measure the effectiveness of the BMPs in removing pollutants in the effluent Such monitoring may include Whole Effluent Toxicity testing. PART I Page 9 • Permit No. C0R-030000 C. TERMS AND CONDITIONS(cont.) I) All wastes composed of building materials must be removed from the site for disposal in licensed disposal facilities. No building material wastes or unused building materials shall be buried,dumped,or discharged at the site. g) Off-site vehicle tracking of sediments shall be minimized. h) AU dischargers must comply with the lawful requirements of municipalities,counties,drainage districts and other local agencies regarding any discharges of stormwater to storm drain systems or other water courses under their jurisdiction,including applicable requirements in municipal stormwater management programs developed to comply with CDPS permits. Dischargers must comply with local stormwater management requirements,policies or guidelines including erosion and sediment control. 2. Prohibition of Non-Stormwater Discharees a) Except as provided in paragraph b,below,all discharges covered by this permit shall be composed entirely of stormwater. Discharges of material other than stormwater must be addressed in a separate CDPS permit issued for that discharge. b) Discharges from the following sources that are combined with stormwater discharges associated with construction activity may be authorized by this permit,provided that the non-stormwater component of the discharge is identified in the SWMP(see Part I.B.I.g of this permit): -fire fighting activities -landscape irrigation return flow -springs 3. Jieleases In Excess of Reportable Ousatitles • This permit does not relieve the permittee of the reporting requirements of 40 CFR 110,40 CFR 117 or 40 CFR 302. Any discharge of hazardous material must be handled in accordance with the Division's Notification Requirements(see Part Il.A.3 of the permit). 4. Stormwater Manaeement Plain Prior to commencement of construction,the stormwater management plan(SWMP)shall be implemented for the construction site covered by this permit. a) Signatory Requirements: The plan shall be signed in accordance with Part I.E.I.,with one retained on site. b) SWMP Review/Changes: The permittee shall amend the plan whenever there is a significant change in design, construction,operation,or maintenance,which has a significant effect on the potential for the discharge of pollutants to the waters of the State,or if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges associated with construction activity. 5. Inspections a) Active Sites-For sites where construction has not been completed,the permittee shall make a thorough inspection of their stormwater management system at least every 14 days and after any precipitation or snowmelt event that causes surface erosion. 1) The construction site perimeter,disturbed areas and areas used for material storage that are exposed to precipitation shall be inspected for evidence of,or the potential for,pollutants entering the drainage system. Erosion and sediment control measures identified in the SWMP shall be observed to ensure that they are operating correctly. • PART I Page 10 • Permit No. C0R-030000 C. TERMS AND CONDITIONS(cont.) 2) Based on the results of the inspection,the description of potential pollutant sources,and the pollution prevention and control measures that are identified in the SWMP shall be revised and modified as appropriate as soon as practicable after such inspection. Modifications to control measures shall be implemented in a timely manner,but in no case more than 7 calendar days after the inspection. 3) The operator shall keep a record of inspections. Any incidence of non-compliance,such as uncontrolled releases of mud or muddy water or measurable quantities of sediment found off the site,shall be recorded with a brief explanation as to the measures taken to prevent future violations,as well as any measure taken to clean up the sediment that has left the site. After adequate measures have been taken to correct any problems, or where a report does not identify any incidents of non-compliance,the report shall contain a signed certification indicating the site is in compliance. This record shall be made available to the Division upon request. b) Completed Sites-For sites where all construction activities are completed but final stabilization has not been achieved due to a vegetative cover that has been planted but has not become established,the pennittee shall make a thorough inspection of their stormwater management system at least once every month. When site conditions make this schedule impractical,permittees may petition the Division to grant an alternate inspection schedule. These inspections must be conducted in accordance with paragraphs I),2),and 3)of Part I.C.5.a.above. c) Winter Conditions-Inspections,as described above in a)and b),will not be required at sites where snow cover exists over the entire site for an extended period,and melting conditions do not exist This exemption is applicable only during the period where melting conditions do not exist. Regular inspections,as described above,are required at all other times. 6. Reiterant. • No regular reporting requirements are included in this permit;however,the Division reserves the right to request that a copy of the inspection reports be submitted. 7. SWMP Submittal Uoon Request Upon request,the pennittee shall submit a copy of the SWMP to the Division,EPA or any local agency in charge of approving sediment and erosion plans,grading plans or stormwater management plans. All SWMPs required under this permit are considered reports that shall be available to the public under Section 308(b)of the CWA. The owner or operator of a facility with stormwater discharges covered by this permit shall make plans available to members of the public upon request,unless the SWMP has been submitted to the Division. However,the pennittee may claim any portion of a SWMP as confidential in accordance with 40 CFR Part 2. D. ADDITIONAL DEFINITIONS For the purposes of this permit: I. BAT and BCT: (Best Available Technology and Best Conventional Technology)Technology based federal water quality requirements covered under 40 CFR subchapter N. 2. Best management practices(BMPs): schedules of activities,prohibitions of practices,maintenance procedures,and other management practices to prevent or reduce the pollution of waters of the State. BMPs also include treatment requirements,operating procedures,and practices to control site runoff;spillage or leaks,waste disposal,or drainage from material storage. 3. Dedicated asphalt plants and concrete plants: portable asphalt plants and concrete plants that are located on or adjacent to a construction site and that provide materials only to that specific construction site. I Page I • Page 11 Permit No. C0R-030000 D. ADDITIONAL DEFINITIONS(cont.) 4. Final stabilization: when all soil disturbing activities at the site have been completed,and uniform vegetative cover has been established with a density of at least 70 percent of pre-disturbance levels,or equivalent permanent,physical erosion reduction methods have been employed. For purposes of this permit,establishment of a vegetative cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered final stabilization. 5. Municipal storm sewer system:a conveyance or system of conveyances(including:roads with drainage systems, municipal streets,catch basins,curbs,gutters,ditches,man-made channels,or storm drains),owned or operated by a State,city,town,county,district,or other public body(created by state law),having jurisdiction over disposal of sewage, industrial waste,stormwater,or other wastes;designed or used for collecting or conveying stormwater. 6. Operator:the individual who has day-to-day supervision and control of activities occurring at the construction site. This can be the owner,the developer,the general contractor or the agent of one of these parties,in some circumstances. It is anticipated that at different phases of a construction project,different types of parties may satisfy the definition of 'operator'and that the permit may be transferred as the roles change. 7. Outfall: a point source at the point where stormwater leaves the construction site and discharges to a receiving water or a stormwater collection system. 8. Part of a larger common plan of development or sale:a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules under one plan. 9. Point source:any discernible,confined and discrete conveyance from which pollutants are or may be discharged. Point source discharges of stormwater result from structures which increase the imperviousness of the ground which acts to collect runoff,with runoff being conveyed along the resulting drainage or grading pattern. 10. Process water: any water which during manufacturing or processing,comes into contact with or results from the • production of any raw material,intermediate product,finished product,by product or waste product. This definition includes mine drainage. 11. Receiving Water:any water of the State of Colorado into which stormwater related to construction activities discharges. 12. Runoff coefficient:the fraction of total rainfall that will appear as runoff. 13. Significant Materials include but are not limited to:raw materials;fuels;materials such as metallic products;hazardous substances designated under section 101(14)of CERCLA;any chemical the facility is required to report pursuant to section 313 of title III of SARA;fertilizers;pesticides;and waste products such as ashes,slag and sludge that have the potential to be released with stormwater discharge. 14. Stormwater:precipitation-induced surface runoff. 15. Waters of the state of Colorado:any and all surface waters that are contained in or flow in or through the state of Colorado. This definition includes all water courses,even if they are usually dry. E. GENERAL REQUIREMENTS I. punster/Requirements a) All reports required for submittal shall be signed and certified for accuracy by the permittee in accordance with the following criteria: 1) In the case of corporations,by a principal executive officer of at least the level of vice-president or his or her duly authorized representative,if such representative is responsible for the overall operation of the facility from which the discharge described in the form originates; 2) In the case of a partnership,by a general partner, • PART I • Page 12 Permit No. COR-030000 E. GENERAL REQUIREMENTS(cons.) 3) In the case of a sole proprietorship,by the proprietor, 4) In the case of a municipal,state,or other public facility,by either a principal executive officer,ranking elected official,or other duly authorized employee. b) Changes to authorization. If an authorization under paragraph a)of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility,a new authorization satisfying the requirements of paragraph a)of this section must be submitted to the Division,prior to or together with any reports,information,or applications to be signed by an authorized representative. c) Certification. Any person signing a document under paragraph a)of this section shall make the following certification: "1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations." 2. Retention of Records a) The permittee shall retain copies of the SWMP and all reports required by this permit and records of all data used to complete the application to be covered by this permit,for a period of at least three years from the date that the site is finally stabilized. • b) The pennittee shall retain a copy of the SWMP required by this permit at the construction site from the date of project initiation to the date of final stabilization,unless another location,specified by the pennittee,is approved by the Division. PART I1 A. MANAGEMENT REQUIREMENTS 1. Change In Discharge The pennittee shall inform the Division(Permits Unit)in writing of any intent to significantly change activities from those indicated in the permit application(this does not include changes to the SWMP). Upon request,the permittee shall furnish the Division with such plans and specifications which the Division deems reasonably necessary to evaluate the effect on the discharge and receiving stream. The SWMP shall be updated within 30 days of the changes. The pennittee shall submit this notice to the Division within two weeks after making a determination to perform the type of activity referred to in the preceding paragraph. Any discharge to the waters of the State from a point source other than specifically authorized by this permit is prohibited 2. Special Notifications-Definitions a) Spill: An unintentional release of solid or liquid material which may cause pollution of state waters. b) Upset: An exceptional incident in which there is unintentional and temporary noncompliance with permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error,improperly designed treatment facilities,inadequate treatment facilities,lack of preventative maintenance,or careless or improper operation. PART II Page 13 • Permit No. COR-030000 A. MANAGEMENT REQUIREMENTS(cont.) 3. Noncompliance Notification a) If,for any reason,the pennittee does not comply with or will be unable to comply with any pennit limitations, standards or pennit requirements specified in this pennit,the permittee shall,at a minimum,provide the Water Quality Control Division and EPA with the following information: 1) A description of the discharge and cause of noncompliance; 2) The period of noncompliance,including exact dates and times and/or the anticipated time when the discharge will return to compliance;and 3) Steps being taken to reduce,eliminate,and prevent recurrence of the noncomplying discharge. b) The permittee shall report the following instances of noncompliance orally within twenty-four(24)hours from the time the pennittee becomes aware of the noncompliance,and shall mail to the Division a written report within five (5)days after becoming aware of the noncompliance(unless otherwise specified by the Division): 1) Any instance of noncompliance which may endanger health or the environment 2) Any spill or discharge of oil or other substance which may cause pollution of the waters of the state. c) The permittee shall report all other instances of non-compliance to the Division within 30 days. The reports shall contain the information listed in sub-paragraph(a)of this section. 4. Submission of Incorrect or Incomplete Information Where the permittee failed to submit any relevant facts in a permit application,or submitted incorrect information in a • permit application or report to the Division,the permittee shall promptly submit the relevant application information which was not submitted or any additional information needed to correct any erroneous information previously submitted. 5. Bypass The bypass of treatment facilities is generally prohibited. 6. Upsets a) Effect of an Upset An upset constitutes an affirmative defense to an action brought for noncompliance with permit limitations and requirements if the requirements of paragraph b of this section are met. (No determination made during administrative review of claims that noncompliance was caused by upset,and before an action for noncompliance, is final administrative action subject to judicial review.) b) Conditions Necessary for a Demonstration of Upset A pennittee who wishes to establish the affirmative defense of upset shall demonstrate through properly signed contemporaneous operating logs,or other relevant evidence that: 1) An upset occurred and that the permittee can identify the specific cause(s)of the upset; 2) The permitted facility was atthe time being properly operated; 3) The permittee submitted notice of the upset as required in Part II.A.3.of this permit(24-hour notice);and • PART II Page 14 • Permit No. C0R-030000 A. MANAGEMENT REQUIREMENTS(cont.) 4) The pennittee complied with any remedial measures required under Section 122.7(d)of the federal regulations. c) Burden of Proof In any enforcement proceeding the pennittee seeking to establish the occurrence of an upset has the burden of proof. 7. Removed Substance' Solids,sludges,or other pollutants removed in the course of treatment or control of wastewaters shall be properly disposed of in a manner such as to prevent any pollutant from such materials from entering waters of the State. 8. Minimization of Advent Impact The pennittee shall take all reasonable steps to minimize any adverse impact to waters of the State resulting from noncompliance with any effluent limitations specified in this permit,including such accelerated or additional monitoring as necessary to determine the nature and impact of the noncomplying discharge. 9. Reduction.Loss.or Failure of Treatment Facility The penninee has the duty to halt or reduce any activity if necessary to maintain compliance with the permit requirements. Upon reduction,loss,or failure of the treatment facility,the pennittee shall,to the extent necessary to maintain compliance with its permit,control production,or all discharges,or both until the facility is restored or an alternative method of treatment is provided. • It shall not be a defense for a permittee in an enforcement action that it would be necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. 10. Proper Operation and Maintenance The pennittee shall at all times properly operate and maintain all facilities and systems of treatment and control(and related appurtenances)which are installed or used by the permittee to achieve compliance with the conditions of this pcnnit. Proper operation and maintenance includes effective performance,adequate funding,adequate operator staffing and training,and adequate laboratory and process controls,including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of the permit. B. RESPONSIBILITIES I. Inspections and Ripht to Entry The pennittee shall allow the Director of the State Water Quality Control Division,the EPA Regional Administrator, and/or their authorized representative,upon the presentation of credentials: a) To enter upon the perntittee's premises where a regulated facility or activity is located or in which any records are required to be kept under the teens and conditions of this permit; b) At reasonable times to have access to and copy any records required to be kept under the terms and conditions of this permit and to inspect any monitoring equipment or monitoring method required in the permit;and c) To enter upon the permittee's premises to investigate,within reason,any actual,suspected,or potential source of water pollution,or any violation of the Colorado Water Quality Control Act. The investigation may include,but is not limited to,the following: sampling of any discharge and/or process waters,the taking of photographs, interviewing penance staff on alleged violations,and access to any and all facilities or areas within the permittee's premises that may have any effect on the discharge,permit,or alleged violation. B. RESPONSIBILITIES(cont.) PART II Page 15 • Permit No. C0R-030000 2. pate to Provide Information The pennittee shall furnish to the Division,within a reasonable time,any information which the Division may request to determine whether cause exists for modifying,revoking and reissuing,or inactivating coverage under this permit,or to determine compliance with this permit The permittee shall also furnish to the Division,upon request,copies of records required to be kept by this permit 3. Transfer of Ownership or Control Certification under this permit may be transferred to a new permittee if: a) The current permittee notifies the Division in writing when the transfer is desired;and b) The notice includes a written agreement between the existing and new permittees containing a specific date for transfer of permit responsibility,coverage and liability between them;and c) The current pennittee has met all fee requirements of the State Discharge Permit System Regulation;Section 61.15. 4. Modification.Suspension.or Revocation of Permit By Division All permit modification,inactivation or revocation and reissuance actions shall be subject to the requirements of the State Discharge Permit System Regulations, Sections 61.5(2) , 61.5(3) , 61.7 and 61.15, 5 C.C.R. 1002-61, except for minor modifications. a) This permit,and certification under this permit,may be modified,suspended,or revoked in whole or in part during its term for reasons determined by the Division including,but not limited to,the following: • 1) Violation of any terms or conditions of the permit; 2) Obtaining a permit by misrepresentation or failing to disclose any fact which is material to the granting or denial of a permit or to the establishment of terms or conditions of the permit; 3) Materially false or inaccurate statements or information in the application for the permit; 4) Promulgation of toxic effluent standards or prohibitions(including any schedule of compliance specified in such effluent standard or prohibition)which are established under Section 307 of the Clean Water Act,where such a toxic pollutant is present in the discharge and such standard or prohibition is more stringent than any limitation for such pollutant in this permit. b) This permit,or certification under this permit,may be modified in whole or in part due to a change in any condition that requires either a temporary or permanent reduction or elimination of the permitted discharge,such as: 1) Promulgation of Water Quality Standards applicable to waters affected by the permitted discharge;or 2) Effluent limitations or other requirements applicable pursuant to the State Act or federal requirements;or 3) Control regulations promulgated;or 4) Data submitted pursuant to Part LB or Part I.C.1 indicates a potential for violation of adopted Water Quality Standards or stream classifications. • PART II Page 16 • Permit No. C0R-030000 B. RESPONSIBILITIES(cont.) c) This permit,or certification under this permit,may be modified in whole or in part to include new effluent limitations and other appropriate conditions where data submitted pursuant to Part I indicates that such effluent limitations and conditions are necessary to ensure compliance with applicable water quality standards and protection of classified uses. d) At the request of the permittee,the Division may modify or inactivate certification under this permit if the following conditions are met: 1) In the case of inactivation,the pennittee notifies the Division of its intent to inactivate the certification,and certifies that the site has been finally stabilized; 2) In the case of inactivation,the permittee has ceased any and all discharges to state waters and demonstrates to the Division there is no probability of further uncontrolled discharge(s)which may affect waters of the State. 3) The Division finds that the pennittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modification,amendment or inactivation; 4) Fee requirements of Section 61.15 of State Discharge Permit System Regulations have been met;and 5) Requirements of public notice have been met. For small construction sites covered by a Qualifying Local Program,coverage under this permit is automatically terminated when a site has been finally stabilized. 5. permit Violations • Failure to comply with any teens and/or conditions of this permit shall be a violation of this permit. Dischargers of stormwater associated with industrial activity,as defined in the EPA Stonnwater Regulation(40 CFR 122.26(6x14),which do not obtain coverage under this or other Colorado general permits,or under an individual CDPS permit regulating industrial stonnwater,will be in violation of the federal Clean Water Act and the Colorado Water Quality Control Act,25-8-101. Failure to comply with CDPS permit requirements will also constitute a violation. Civil penalties for such violations may be up to$10,000 per day,and criminal pollution of state waters is punishable by fines of up to 525,000 per day. 6. Leval Responsibilities The issuance of this permit does not convey any property or water rights in either real or personal property,or stream flows,or any exclusive privileges,nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal,State or local laws or regulations. Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities,liabilities,or penalties to which the permittee is or may be subject to under Section 311(Oil and Hazardous Substance Liability)of the Clean Water Act. 7. Severabllity The provisions of this permit are severable. If any provisions of this permit,or the application of any provision of this permit to any circumstance,is held invalid,the application of such provision to other circumstances and the application of the remainder of this permit shall not be affected. I PART II Page 17 • Permit No. COR-030000 ( B. RESPONSIBILITIES(cont.) 8. Renewal Application, If the pennittee desires to continue to discharge,a permit renewal application shall be submitted at least ninety(90)days before this permit expires. If the pennittee anticipates that there will be no discharge after the expiration date of this permit,the Division should be promptly notified so that it can inactivate the certification in accordance with Part II.B.4.d. 9. Confidentiality Except for data determined to be confidential under Section 308 of the Federal Clean Water Act and Regulations for the State Discharge Permit System 61.5(4), all reports prepared in accordance with the terms of this permit shall be available for public inspection at the offices of the Division. The pennittee must state what is confidential at the time of submittal. Any information relating to any secret process,method of manufacture or production,or sales or marketing data which has been declared confidential by the permittee,and which may be acquired,ascertained,or discovered,whether in any sampling investigation,emergency investigation,or otherwise,shall not be publicly disclosed by any member,officer,or employee of the Commission or the Division,but shall be kept confidential. Any person seeking to invoke the protection of this section shall bear the burden of proving its applicability. This section shall never be interpreted as preventing full disclosure of effluent data. 10. Epi,s The pennittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act Failure to submit the required fee when due and payable is a violation of the permit and will result in enforcement action pursuant to Section 25-8-601 et.seq.,C.R.S.1973 as amended. • 11. Reoulrine an Individual CDPS Permit The Director may require any owner or operator covered under this permit to apply for and obtain an individual CDPS permit if: a) The discharger is not in compliance with the conditions of this general permit; b) Conditions or standards have changed so that the discharge no longer qualifies for a general permit;or c) Data become available which indicate water quality standards may be violated. The owner or operator must be notified in writing that an application for an individual CDPS permit is required. When an individual CDPS permit is issued to an owner or operator otherwise covered under this General Permit,the applicability of the general permit to that owner or operator is automatically inactivated upon the effective date of the individual CDPS permit. • • CONSTRUCTION STORMWATER MANAGEMENT PLAN For RESOURCE COLORADO WATER & • SANITATION METROPOLITAN DISTRICT October 2006 STORMWATER MANAGEMENT PLAN S FOR THE CONSTRUCTION OF THE RESOURCE COLORADO WATER & SANITATION METROPOLITAN DISTRICT'S WASTEWATER TREATMENT FACILITY 1. Site Description A. Construction Activity: Resource Colorado Water&Sanitation Metropolitan District(RCWSMD)is constructing a new wastewater treatment facility(WWTF). The proposed W WTF will be constructed in phases to reach the anticipated capacity of 4.0 million gallons per day(MGD). The initial phase could have a capacity between 300,000 gallons per day(gpd)and 500,000 gpd. The second phase could have a capacity between 1.2 MGD and 1.5 MGD,and the final phase could have a capacity of 3.6 MGD to 4.0 MGD. Construction activities could include excavation and backfill for aeration basins,membrane bioreactor(MBR) basins,clarifiers,aerobic digesters,manholes,chemical and UV disinfection tanks, all associated piping,and a stotmwater retention basin. Construction plans also include a new headwork's building solids handing building,and an administration/laboratory building. An on-site engineering inspector will monitor all construction. B. Sequence for major activities: To be determined C. Estimated total area of the site: To be determined D. Estimated area of the site that*expected to undergo clearing, • excavation or grading: To be determined E. Estimated runoff coefficient of the site before construction: To be determined F. ' Estimated runoff coefficient of the site after construction: To be determined G. Data describing the soil, soil erosion potential, or the quality of any discharge from the site: To be determined H. Existing vegetation at the site and an estimate of the percent vegetative ground cover. To be determined I. Percent of existing vegetative ground cover: To be determined Percent of planted area: To be determined • 1 • I. Location and descri tion of an other tential llution sources: Domestic Untreated Wastewater Aeration Basins [CHEMICAL#1] To be determined [CHEMICAL#2] To be determined Grit(headwork solids) Contained in Dumpsters Motor Oil/Fuel Contained in drums or.portable gas., tanks throughout various site buildings. J. Location and description of any anticipated non-stormwateetomponents of the discharge; such as springs and landscape irrigation return flow. To be determined K. Name of the receiving water(s) and the size, type and location of any outfall: To be determined 2. Site Map • See Attachment 1 for a site map. The site map details the following information as required by the general stormwater permit application for construction activities: - construction site boundaries - all areas of soil disturbance - areas of eat aa]i fill - areas used.for Storage of building materials, soils or wastes - location of major erosion control facilities or structures surface waters 3. BMPs for Stormwater Pollution Prevention A) Erosion and Sediment Controls Stormwatei Pollution Prevention during construction requires diligence in preventing stormwater from becoming "dirty" beyond normal levels seen at an undisturbed, well- maintained site. Construction activities can affect both on-site and off-site storm water pollution levels. Construction BMPs largely focus on minimizing soil erosion, maintaining proper drainage around the site, and minimizing contamination potential of stormwater due to on-site and/or construction pollutants. Generally speaking, BMPs before and during construction largely consist of erosion control, slope stabilization, protection of existing vegetation, protection of the existing stormwater system, trash and debris removal, and tracking control. During the • 2 expansion a new stormwater drainage system will be constructed to handle stormwater • flows from the expanded facilities. Upon completion of the expansion, BMPs will shift to revegitation and proper grading for planned drainage. The following key specifications (found in the construction contract documents) have been implemented as appropriate activities and controls for limiting stormwater pollution and erosion during construction activities at the facility. [INSERT KEY SPECIFICATIONS] B)Materials Handling and Spill Prevention Most potential pollutants, other than soil and construction debris, are controlled by the Owner. For any construction materials that qualify as potential pollutants, such as fertilizers, those materials shall be stored in an approved storage facility. Such storage facility shall have water shedding roof and appropriate drainage to avoid ponding of water in or around the facility. Any spill will be.handled via immediate cleanup and containment. Solid materials shall be scooped into appropriate storage containers while liquid materials shall be absorbed using absorbing clay sand and disposed of properly unless otherwise dictated by an MSDS. SOI-RLE ('t)N'I'.kIN\ll N I Domestic Untreated Concrete'basins and piping. Careful coordination of activities Wastewater between Owner and Contractor are necessary to prevent spills. Spills would be difficult to Contain, so the key is to prevent • them. [CHEMICAL#1] [CHEMICAL#2] Grit(headwork solids). Contained in Dumpsters in/near Headwork's Building. Spills .would be Corrected by scooping the material back into the duAlpster. Motor Oil/Fuel Contained in drums or portable gas tanks throughout various site buildings. Spills would be corrected by absorbing liquid using crushed clay which would then be deposited in a dumpster and disposed off site. 4. Final Stabilization and Long-term Stormwater Management Final stabilization will occur when sufficient vegetative cover has been established which exhibits the capacity of providing erosion control equivalent to pre-existing conditions at the site. 5. Other Controls For a description of other measures to control pollutants in stormwater discharges, including plans for waste disposal and limiting off-site soil tracking see Section 3 above. • 3 • 6. Inspections and Maintenance Attachment 2 is an inspection sheet to be used weekly by the resident engineer or approved alternate to inspect the construction site for compliance with the SWMP. The contractor will be given a copy of the inspection form upon completion of the inspection. The inspector and contractor will review any deficiencies and determine the best method for correction. Proposed corrective actions will be recorded on the inspection form. The amount of time allowed to correct the deficiency will be left to the discretion of the owner and/or resident engineer and will also be recorded along side the respective corrective actions. • • 4 Attachment 1 • • • 5 • Attachment 2 CONSTRUCTION STORMWATER INSPECTION FORM FOR RCWSMD Inspector: Date: BMP Pass Fail NA Comments To the extent possible, maintain existing stormwater drainage facilities. Keep clean and free of sediment during construction and final cleanup. Do not obstruct surface drainage any longer than necessary. Temporary storm drainage is sufficient to protect the Work, site, existing plant and adjacent property. Grade site to drain. • Protect site from puddling or running water. Provide water barriers to protect site from soil erosion. Maintain sediment control fencing at site perimeter to prevent erosion and sedimentation from occurring off-site. Maintain roughened surface on all disturbed areas to minimize erosion • potential. Maintain temporary crushed gravel or recycled asphalt roads accessing'public. thoroughfares to service construction area. Provide mud control during wet weather and snow removal during snow periods. Maintain temporary road'Stapes to prevent tracking mud onto plant and public roadways. Maintain'areas free of waste materials, debris,-and rubbish. Remove waste materials from site periodically and dispose off-site in accordance with local and state regulations. Protect surrounding areas from damage during excavation, filling and backfilling. Do not remove trees from outside excavation or fill areas unless authorized and protect from permanent damage by construction activities Comply With Construction Dewatering Permit • 6 • BMP Pass Fail NA Comments Remove materials deposited in roadway ditches or other watercourses crossed by trench line immediately after backfilling is completed and restore ditches and watercourses to original section, grade and contours. Where trenches are constructed in ditches or other watercourses, protect backfill from erosion. Field locate erosion control barriers along slopes, next to water courses and downstream of disturbed areas to prevent surface runoff from eroding areas disturbed Contractor during construction, to minimize the transport of suspended solids in waterways(including ditches.) Repair or replace settlement. At completion of other work in each - � area,place and grade topsoil to maintain gradient as indicated. Seed all areas disturbed by construction. Exercise care during soil preparation on all embankments so as not to disturb adjacent established ground cover. Protect seedbed from traffic from vehicular travel other than the tractor and seed drill. . Cover seeded slopes with erosion control fabric where grade is 3 to 1 or greater and where indicated on Drawings. and Section 02200. Cover with mulch. Maintain integrity of erosion control fabric until seed germination. Store potential constitution pollutants (like fertilizers) in *iopyed storage facilities. Pollution prevention • control satisfactorily in place for; wastewater, sodium hypochlorite, biosolids, ferric chloride,grit,and motor oil/fdel 1. Survey the construction area for evidence of erosion, if found, report the location and the extent of erosion(i.e., width, depth and length.) • 7 Page 2 of 17 • Permit No.COR-0 10000 CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH LIGHT INDUSTRIAL ACTIVITY AUTHORIZATION TO DISCHARGE UNDER THE COLORADO DISCHARGE PERMIT SYSTEM In compliance with the provisions of the Colorado Water Quality Control Act,(25-8-101 et seq.,CRS, 1973 as amended)and the Federal Water Pollution Control Act,as amended(33 U.S.C. 1251 et seq.;the"Act"), this permit authorizes the discharge of stormwater associated with light industrial activity certified under this permit,from those locations specified throughout the State of Colorado to specified waters of the State. Such discharges shall be in accordance with the conditions of this permit. This permit specifically authorizes the facility listed on page 1 of this permit to discharge stormwater associated with light industrial activity,as of this date,in accordance with the permit requirements and conditions set forth in Parts I and II hereof. All discharges authorized herein shall be consistent with the • terms and conditions of this permit. This permit and the authorization to discharge shall expire at midnight,June 30,2011. Issued and Signed this 31u day of May,2006. COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT/iraer Janet S.Kieler Permits Section Manager Water Quality Control Division ISSUED AND SIGNED MAY 31, 2006 EFFECTIVE JULY 1, 2006 S Page 2 Permit No.COR-010000 PART I • k. COVERAGE UNDER THIS PERMIT 1. Authority to Discharge Under this general permit,facilities engaged in light industrial activity as listed in Part I.A.5 are granted authorization to discharge stormwater associated with industrial activity into waters of the state of Colorado. 2. Application,Due Dates a. Application Due Dates: At least thirty days prior to the anticipated date of discharge,the owner(or operator if the owner does not operate the facility)of the facility shall submit an application as provided by the Division. One original of the completed permit application form shall be submitted to: Colorado Department of Public Health and Environment Water Quality Control Division WQCD-P-B2 4300 Cherry Creek Drive South Denver,Colorado 80246-1530 b. Application Form: The application form requires,at a minimum,the following information: 1) Name and address of principal in charge of operation of the facility; 2) Site address and location; 3) Facility contact person,phone number and email address(if available); 4) Standard Industrial Classification(SIC)code(s); 5) List of other environmental permits currently held by the facility, 6) Facility description/industrial activities which take place at the site; • 7) Receiving waters;and 8) Certification as to the completion of a Stormwater Management Plan(SWMP). 3. Permit Certification Procedures If the general permit is applicable,then a certification will be developed and the applicant will be certified under this general permit. a. Request for Additional Information: The Division shall have up to thirty days after receipt of the above information to request additional data and/or deny the authorization for any particular discharge. Upon receipt of additional information,the Division shall have an additional fifteen days to issue or deny authorization for the particular discharge. (Notification of denial shall be by letter,in cases where coverage under an alternate general permit or an individual permit is required,instead of coverage under this general permit) b. Automatic Coverage: If the applicant does not receive a request for additional information or a notification of denial from the Division dated within thirty days of the receipt of the application by the Division,authorization to discharge in accordance with the conditions of this permit shall be deemed granted. c. Individual Permit Required: If,after evaluation of the application(or additional information,such as the SWMP),it is found that this general permit is not applicable to the operation,then the application will be processed as one for an individual permit The applicant will be notified of the Division's decision to deny certification under this general permit. For an individual permit,additional information may be requested,and 180 days will be required to process the application and issue the permit. Temporary coverage under this general permit may be allowed until the individual permit goes into effect. i PART I Page 3 Permit No.COR-0 10000 • A. COVERAGE UNDER THIS PERMIT(cont.) d. General vs.Individual Permit Coverage: Any owner or operator authorized by this permit may request to be excluded from the coverage of this permit by applying for an individual CDPS permit. The owner or operator shall submit an individual application,with reasons supporting the request,to the Division at least 180 days prior to any discharge. 4. Permit Expiration Date/Reappllcatioa Authorization to discharge under this general permit shall expire on June 30,2011. The Division must evaluate and reissue this general permit once every five years,and must also recertify the applicant's authority to discharge under the general permit at such time. Therefore,a pernuttee desiring continued coverage under the general permit must reapply by March 31, 2011. The Division will initiate the renewal process;however,it is ultimately the permittee's responsibility to ensure that the renewal is submitted.The Division will determine if the applicant may continue to operate under the terms of the general permit. An individual permit may be required for any facility not reauthorized to discharge under the reissued general permit. For facilities wishing to terminate authorization under the permit,provisions of Part II.B.4.d will be applicable. 5. Industries Covered Under this Permit a. Types of Industries Covered,by Standard Industrial Classification(SIC)Codes: Note: See the Rationale,Section III.A,for a more detailed explanation of SIC Codes. Industries Covered by this General Permit 13,20,21,22,23,24(except 2491),25,26,27,2951(Asphalt batch Plants),31,32(except 3241,3274),34,35,36,37, 38,39,4221,4222,4225,4952(Wastewater treatment plants with a design flow of 1.0 MGD or more,or required to have an approved pretreatment program under 40 CFR 403),and Transportation Facilities which have vehicle • maintenance,fueling,equipment cleaning or airport deicing including 40 41,42(except 4221,4222,4225),43,44,45 (air transportation facilities that use less than 1000 gallons of deicer(s)annually,and/or that have annual fuel sales of less than one million gallons/year),and 5171. For any facilities which do not require coverage under the stormwater regulations,but still wish to be covered under this general permit,the Division reserves the right to certify them under this permit. The Division also reserves the right to include under this general permit any specific facility not otherwise covered. This determination would be based on the reasonable potential of a specific industrial discharger to contribute to a violation of a water quality standard,or to be a significant contributor of pollutants to state waters. See State Discharge Permit System Regulations,Section 61.3(2XeXvii). b. Definitions: 1) Stonnwater discharge associated with industrial activity means any point source which is used for collecting and conveying stormwater and which is located at an industrial plant or directly related to manufacturing,processing or raw materials storage areas at an industrial plant. The term includes,but is not limited to,stormwater discharges from drainage areas in which are located: industrial plant yards;immediate access roads and rail lines;drainage ponds;material handling sites;refuse sites;sites used for the application or disposal of process waters;sites used for storage and maintenance of material handling equipment;sites that are or have been used for residual treatment, storage or disposal;dust or particulate generating processes;shipping and receiving areas;manufacturing buildings; storage areas(including tank farms)for raw materials,and intermediate and finished products;and areas where industrial activity has taken place in the past and significant materials remain and are exposed to stormwater. 2) Material handling activities include: storage,loading and unloading of any raw material,intermediate product, finished product,by-product,or waste product where such products could come in contact with precipitation. 3) Significant materials include but are not limited to: raw materials;fuels;materials such as solvents,detergents,and plastic pellets;finished materials such as metallic products;raw materials used in food processing or production; hazardous substances designated under section 101(14)of CERCLA;any chemical the facility is required to report PART I Page 4 Permit No.COR-010000 . k. COVERAGE UNDER THIS PERMIT(cunt) pursuant to section 313 of SARA III;fertilizers;pesticides;and waste products such as ashes,slag and sludge that have the potential to be released with stormwater discharge. 6. individual Permit Criteria Various criteria can be used in evaluating whether or not an individual(or alternate general)permit is required instead of this general permit This information may come from the application,SWMP,or additional information as requested by the Division,and includes,but is not limited to,the following: a. the quality of the receiving waters(e.g.,the presence of downstream drinking water intakes or a high quality fishery,or for preservation of high quality water); b. the type of industry,including pollution potential; c. the volume and type of materials handled; d. the size of the facility; e. evidence of noncompliance under a previous permit for the operation; f. the use of chemicals within the stormwater system;or g. discharges of pollutants of concern to waters for which there is a Total Maximum Daily Load(TMDL)established. In addition,an individual permit may be required when the Division has shown or has reason to suspect that the stormwater discharge may contribute to a violation of a water quality standard. 7. Mobile Asphalt and Concrete Batch Plants The Division has determined that,if adequately addressed by the facility's SWMP,the permit certification may be tied to the plant,as opposed to the site. The pennittee's SWMP shall contain additional relevant information,such as the proposed • standard Best Management Practices(BMPs)which would be used at each site,etc. The permittee must still meet the application,permit and SWMP requirements as described herein. The permittee is required to summarize the current location and pad locations of the plant for the previous year in the Annual Report. See Part I.D.1 of the permit.As an alternative,a batch plant that is dedicated to a specific construction site may instead be covered under a CDPS Construction Stormwater general permit certification issued to that site,provided that the site's SWMP includes adequate provisions for the batch plant. B. STORMWATER MANAGEMENT PLAN-CONTENTS AND REQUIREMENTS A Stonnwater Management Plan(SWMP)shall be developed for each facility covered by this permit SW MPs shall include BMPs that are selected,installed,implemented and maintained in accordance with good engineering practices. (The plan need not be completed by a registered engineer.) The plan shall identify potential sources of pollution which may reasonably be expected to affect the quality of stonnwater discharges associated with industrial activity from the facility. In addition,the plan shall describe and ensure the implementation of practices which are to be used to reduce the pollutants in stonnwater discharges associated with industrial activity at the facility and to assure compliance with the terms and conditions of this permit As a condition of this permit,facilities must implement the provisions of the SWMP required under this part The Division reserves the right to review the plan,and to require additional measures to prevent and control pollution as needed. Any SWMP prepared before June 30,2006 that does not meet all of the requirements listed herein(especially those items required for the site map)must be amended to conform with the SWMP requirements in this permit. Such amendments must be completed within 60 days of the certification effective date(typically July 1,2006). The SWMP shall include the following items,at a minimum: I. Industrial Activity Description The plan shall provide a narrative description of the industrial activity taking place at the site. • PART I Page 5 Permit No.COR-0 10000 • 3. STORMWATER MANAGEMENT PLAN-CONTENTS AND REQUIREMENTS(coot.) 2. Site Mao The plan shall include a site map indicating the following: a. the areas where industrial activities occur; b. the locations of stormwater outfalls and an approximate outline of the areas draining to each outfall; c. the locations of existing and new structural control measures to reduce pollutants in stonnwater runoff d. the locations of all surface water bodies,including dry water courses,located in or next to the facility, e. the locations of all potential pollutant sources identified under Part 1.B.3.b;and f. the location of each sampling point identified under Part 1.B.3.c 3. Stormwater Management Controls Each facility covered by this permit shall develop a description of stormwater management controls appropriate for the facility,and implement such controls. The appropriateness and priorities of controls in a plan shall reflect identified potential sources of pollutants at the facility. The description of stonnwater management controls shall address the following minimum components,including a schedule for implementing such controls. For newly-certified facilities,if existing controls are inadequate to achieve the general objective of controlling pollutants in stonnwater discharges associated with industrial activity,any schedule to implement additional controls to meet this objective shall not exceed 60 days from when the facility begins operations,or from when the general permit certification is issued,whichever is later, unless permission for a later deadline is obtained from the Division. New controls that will replace or modify existing controls that are already adequately addressing a pollutant source are not required to meet this schedule(e.g.,replacing a control with a less resource-intensive practice). a. SWMP Administrator: The SWMP shall identify a specific individual(s)within the plant organization who is • responsible for developing the SWMP and assisting the plant manager in its implementation,maintenance,and revision. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. b. Identification of Potential Pollutant Sources and Best Management Practices: The SWMP shall identify potential sources of pollutants at the site,and assess the potential of these sources to contribute pollutants to stormwater discharges associated with industrial activity. The SWMP must also describe appropriate Best Management Practices (BMPs)to reduce the potential of these sources to contribute pollutants to stormwater discharges. At a minimum,each of the following shall be evaluated for the reasonable potential for contributing pollutants to runoff: -Loading and unloading operations -Outdoor storage activities -Outdoor manufacturing or processing activities -Significant dust or particulate generating processes -On-site waste disposal practices -The presence of salt piles -Areas where significant spills and significant leaks of toxic or hazardous substances have occurred at the facility in the three years prior to the date the SWMP is developed or amended. Factors to consider include the toxicity of chemicals;quantity of chemicals used,produced,or discharged;the likelihood of contact with stonnwater;and history of significant leaks or spills of toxic or hazardous substances. The description of BMPs shall include: I) Stormwater diversion:Describe how and where stonnwater will be diverted away from industrial areas to prevent stonnwater contamination. 2) Materials handling and soill oreventio0i For materials that could impact stormwater runoff,all existing and planned BMPs that prevent the contamination of stonnwater runoff at the site shall be included and described. PART I Page 6 Permit No.COR-010000 • B. STORMWATER MANAGEMENT PLAN-CONTENTS AND REQUIREMENTS(cont.) 3) Sediment and erosion prevention:The plan shall identify areas which,due to topography,activities,or other factors,have a high potential for significant soil erosion,and identify measures taken to limit erosion. 4) Other pollution prevention measures:The plan shall identify any other structural and non-structural measures for stormwater quality control on-site. In each case where stormwater pollution potential exists,appropriate preventive measures must be taken and documented. c. Sampling Information:-The plan shall include a summary of any existing discharge sampling data describing pollutants in stormwater discharges,and a description of each existing or proposed sampling point,if monitoring is required by the Division under Part I.D.2. d. Preventive Maintenance: A preventive maintenance program is required,and shall involve inspection and maintenance of stormwater management devices(cleaning oil/water separators,catch basins,etc.)as well as inspecting and testing plant equipment and systems to uncover conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters. These periodic inspections are different from the comprehensive site evaluation(see Part I.C.5),although the former may be incorporated into the latter.Equipment,area,or other inspections are typically visual and are normally conducted on a regular basis(e.g.,daily inspections of loading areas). e. Good Housekeeping: Good housekeeping requires the maintenance of a clean,orderly facility. This part of the SWMP shall address cleaning and maintenance schedules,trash collection and disposal practices,grounds maintenance, etc. f. Spill Prevention and Response Procedures: Areas where potential spills can occur,and their accompanying drainage points,shall be identified clearly in the SWMP. Where appropriate,specifying material handling procedures and • storage requirements in the plan shall be considered. Procedures for cleaning up spills shall be identified in the plan and made available to the appropriate personnel. The necessary equipment to implement a clean up shall be available to personnel. g. Employee Training: Employee training programs shall inform personnel at all levels of responsibility(who are involved in industrial activities that may impact stormwater runoff)of the components and goals of the SWMP. Training shall address topics such as spill response,good housekeeping and material management practices. The SWMP shall identify periodic dates for such training. Contractor or temporary personnel shall be informed of plant operation and design features in order to prevent discharges or spills from occurring. h. Identification of Discharges other than Stormwater: The stormwater conveyance system on the site shall be evaluated for the presence of discharges other than stornwater. The SWMP shall include a description of the results of any evaluation for the presence of discharges other than stormwater,the method used,the date of the evaluation,and the on-site drainage points that were directly observed during the evaluation. A number of discharges other than stormwater may not require a CDPS Industrial Wastewater Discharge permit and are considered Allowable Non-Stormwater Discharges. Any of these discharges that exist at the site must be identified in the SWMP. See Part I.C.3.b of the permit for a list of such allowable discharges. 4. Comprehensive Iusoectioaa The SWMP shall identify qualified personnel that shall inspect designated equipment and plant areas. The procedures and intervals of the comprehensive inspection shall also be specified in the plan and shall be consistent with Pan I.C.5. Except as provided in paragraphs(d)and(e)of that part,comprehensive inspections shall in no case be completed less than twice a year(in the spring and fall). The operator shall keep a record of such inspections. This record shall be made available to the Division upon request and shall be summarized in the Annual Report. • PART I Page 7 Permit No.COR-010000 • B. STORMWATER MANAGEMENT PLAN-CONTENTS AND REQUIREMENTS(cont.) 5. Consistenev with Other Plans SW MPs may reflect requirements for Spill Prevention Control and Countermeasure(SPCC)plans under section 311 of the CWA,or Best Management Practices(BMPs)Programs otherwise required by a CDPS permit,and may incorporate any part of such plans into the SWMP by reference,provided that the relevant sections of such plans are available as part of the SWMP consistent with Section i.C.2.b. C. OTHER TERMS AND CONDITIONS 1. General Limitations The following limitations shall apply to all discharges authorized by this permit: a. Stormwater discharges from industrial activities shall not cause or threaten to cause pollution,contamination or degradation of State waters. b. Bulk storage structures for petroleum products and any other chemicals shall have secondary containment or equivalent adequate protection so as to contain all spills and prevent any spilled material from entering State waters. c. No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by the Division. In granting the use of such chemicals,special conditions and monitoring may be addressed by separate letter. d. All dischargers must comply with the lawful requirements of counties,drainage districts and other state or local agencies regarding any discharges of stormwater to storm drain systems or other water courses under their jurisdiction. 2. SWMP Reaulrements• a. SWMP Preparation and Implementation: The SWMP shall be prepared prior to applying for coverage under the general permit,and certification of this submitted with the application. The SWMP shall be implemented when the facility begins operation,or when the general permit certification is Issued,whichever b later,and updated as appropriate(see paragraph c.2),below). b. SWMP Retention: A current copy of the SWMP shall be retained on site. c. SWMP Review/Changes: i) Division Review: Upon review of the SWMP,the Division may notify the permittee at any time that the plan does not meet one or more of the minimum requirements of this permit. After such notification,the permiuee shall make changes to the plan and shall submit to the Division an update to the plan including the requested changes. Unless otherwise provided by the Division,the permittee shall have 30 days after such notification to both make the necessary changes to the plan and to implement them. If the Division determines that the permittee's discharges may cause,have the reasonable potential to cause,or contribute to an excursion above any applicable water quality standard,the Division may require the pemattee, within a specified time period,to develop and implement a supplemental BMP action plan describing SWMP modifications to adequately address the identified water quality concerns. 2) Pennittee Review/Change:The permittee shall amend the plan whenever there is a change in design,construction, operation,or maintenance which has a significant effect on the potential for the discharge of pollutants to the waters of the State,or if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater discharges associated with industrial activity. if existing BMPs need to be modified or if additional BMPs are necessary,the plan changes and implementation must be completed before the next anticipated storm,or not more than 60 days after:the change in design,construction,operation,or maintenance, or,the SWMP has been determined to be ineffective,unless this time frame is extended by the Division. Amendments to the plan shall be summarized in the next Annual Report. The Division reserves the right to require additional measures to prevent and control pollution,as needed. PART I Page 8 Permit No.COR-0 10000 • C. OTHER TERMS AND CONDITIONS(cont.) 3. Prohibition of Non-stormwater Discharues a. Except as provided in subsection b,below,all discharges authorized by this permit shall be composed entirely of stormwater discharges associated with Industrial activity. Discharges of material other than stormwater must be addressed in a separate CDPS permit issued for that discharge. b. Discharges from the following sources may be authorized by this permit,provided that: 1) appropriate control measures to minimize the impacts of such sources are implemented as needed;and 2) the non-stomtwater component(s)of the discharge and the control measure(s)used are identified in the SWMP. These sources include discharges from emergency fire fighting activities;fire hydrant flushing;potable water,including water line flushing;pavement wash waters where no detergents are used and no spills or leaks of toxic or hazardous materials have occurred(unless all spilled material has been removed);routine external building and sign washdown that does not use detergents;uncontaminated compressor condensate;irrigation drainage;lawn watering;air conditioner condensate;uncontaminated springs;foundation or footing drains where flows are not contaminated;and incidental windblown mist from cooling towers that collects on rooftops of adjacent portions of the facility,but NOT intentional discharges from the cooling tower. 4. Releases in Excess of Reportable Ouantities This permit does not relieve the perm ittee of the reporting requirements of 40 CFR 110,40 CFR 117 or 40 CFR 302. Any discharge of hazardous substances must be handled in accordance with the Division's Notification Requirements(see Part II.A.3 of the permit). 5. Comprehensive Facility Inspections ,• In addition to the inspections necessary to comply with the preventive maintenance program requirements in Part I.B.3.d, qualified personnel identified by the pemuttee shall make a comprehensive inspection of their stormwater management system,at least twice per year(in the spring and fall),except as provided in paragraphs d and e,below. These comprehensive inspections must be documented and summarized in the Annual Report(see Part I.D.I of the permit). Qualified personnel are those who possess the knowledge and skills to assess conditions and activities that could impact stormwater quality at the facility,and who can also evaluate the effectiveness of BMPs selected. a. Material handling areas,disturbed areas,areas used for material storage that are exposed to precipitation, and other potential sources of pollution identified in the SWMP in accordance with Part I.B.3.b of this permit shall be inspected for evidence of,or the potential for,pollutants entering the drainage system. Structural stormwater management measures,sediment and control measures,and other structural pollution prevention measures identified in the plan shall be observed to ensure that they are operating correctly. A visual inspection of equipment needed to implement the plan, such as spill response equipment,shall be made to confirm that it is readily available and in proper working order. b. My repairs or maintenance needs identified by the inspection shall be completed immediately. Based on the results of the inspection,if revisions to the description of potential pollutant sources and pollution prevention measures identified in the plan are needed,the plan shall be revised as appropriate,and shall provide for implementation of any changes to the plan in a timely manner,and in compliance with the requirements of Part I.C.2.c.2. c. A report summarizing the scope of the inspection,personnel making the inspection,the date(s)of the inspection, significant observations relating to the implementation of the SWMP,and actions taken in accordance with paragraph (b),above,shall be made and retained for at least three years after the date of the inspection. Significant observations include such things as the locations of discharges of pollutants from the site;locations of previously unidentified sources of pollutants;locations of BMPs needing maintenance or repair,locations of failed BMPs that need replacement;and locations where additional BMPs are needed. The report must also document any incidents of noncompliance observed. PART I Page 9 Permit No.COR-0 10000• OTHER TERMS AND CONDITIONS(cont) d. Where semi-annual site inspections are shown in the plan to be impractical for sites where an employee is not stationed or does not routinely visit the site,inspections as required in this part shall be conducted at appropriate intervals specified in the plan,but never less than once in two years. e. Where semi-annual site inspections are shown in the plan to be impractical for inactive sites(sites where industrial activity is no longer conducted),site inspections required by this part shall be conducted at appropriate intervals specified in the plan,but,in no case less than once in three years. At least one site inspection required under this part shall be conducted prior to October 1,2009 or the date two years after such site becomes inactive,whichever is later. 6. SWMP Availability A copy of the SWMP shall be provided to the Division and/or to EPA upon request,and within the time frame specified in the request. If the SWMP is required to be submitted to either of these entities,it must include a signed certification in accordance with Part I.C.3 of the permit,certifying that the SWMP is complete and meets all permit requirements. All SWMPs required under this permit are considered reports that shall be available to the public under Section 308(b)of the CWA.The owner or operator of a facility with stotmwater discharges covered by this permit shall make plans available to members of the public upon request. However,the permitter may claim any portion of a stornwater pollution plan as confidential in accordance with 40 CFR Part 2. 7. Total Maximum Daily Load(TMDL1 If a TMDL has been approved for any waterbody into which the permittee discharges,and it has been determined that the types of discharges covered under this permit are or have the potential to be identified as a significant source of the pollutant in question,the permittee will be notified by the Division. The permittee will be required to do the following: • a. under the permittee's SWMP,implement specific management practices based on requirements of the TMDL,and evaluate whether the requirements are being met through implementation of existing sonnwater BMPs or if additional BMPs are necessary. Document the calculations or other evidence that show that the requirements,including any specific pollutant wasteload allocations(WLAs),are expected to be met;and b. if the evaluation shows that additional or modified BMPs are necessary,describe the type and schedule for the BMP additions/revisions. A description of the SWMP changes shall be included with the next Annual Report,or if requested by the Division,whichever is sooner. Discharge monitoring may also be required. The permittee may maintain coverage under the general permit provided they comply with the applicable requirements outlined above. The Division reserves the right to require individual or alternate general permit coverage. D. MONITORING AND REPORTING 1. Annual Report The pennittee will be required to submit an Annual Report,covering January 1 through December 31 of each year,on their compliance with the SWMP. The Annual Report shall contain,at a minimum: a. Name of pennittee,address,phone number,and permit certification number. b. A report on the facility's overall compliance with the SWMP. c. A summary of each comprehensive stormwater facility inspection made,including date,findings,and action taken. d. Results and interpretation of any storrnwater monitoring performed. e. The report shall be signed and certified for accuracy by the permittee,including the certification language contained in Part I.D.5 of the permit PART I Page 10 Permit No.COR-010000 • D. MONITORING AND REPORTING(cont) 1. For mobile asphalt and concrete batch plants,a description of the current location and past locations for the reporting year. The Annual Report will be due to the Division on or before February 15 of the following year(see address below). The exact due date for the petmittee's first Annual Report will be listed in their certification. The first report may include less than twelve months of information,unless otherwise indicated in the certification. The Division reserves the right to require additional information in the report,on a case-by-case basis,as needed. A signed copy of the above report form shall be submitted to the following address: Colorado Department of Public Health and Environment Water Quality Control Division WQCD-P-B2 4300 Cherry Creek Drive South Denver,Colorado 80246-1530 2. Monitorial, Sampling and testing of stormwater for specific parameters is not required on a routine basis under this permit. The Division reserves the right to require sampling and testing,on a case-by-case basis,in the event that there is reason to suspect that compliance with the SWMP is a problem,or to measure the effectiveness of the BMPs in removing pollutants in the effluent. If monitoring is required,the following definitions apply: a. The thirty(30)day average shall be determined by the arithmetic mean of all samples collected during a thirty(30) • consecutive-day period. b. A grab sample,for monitoring requirements,is a single"dip and take"sample. 3. Reporting of Data Reporting of any monitoring data gathered in compliance with Part 1.O.2 shall be on an annual basis,unless otherwise specified by the Division. Monitoring results shall be summarized for each year(January 1-December 31)and reported on Division-approved discharge monitoring report forms and submitted to the Division with the Annual Report due February 15 of each year at the address above. 4. Reporting to Municipality Any permitted facility discharging to a municipal storm sewer shall provide the municipality with a copy of the permit application,and/or Annual Reports,upon request. A copy of the SWMP shall also be provided to the municipality upon request. 5. Signatory Requirements a. All reports and applications submitted to the Division and/or EPA shall be signed and certified for accuracy by the permittee in accordance with the following criteria: 1) In the case of corporations,by a principal executive officer of at least the level of vice-president or his or her duly authorized representative,if such representative is responsible for the overall operation of the facility from which the discharge described in the form originates; 2) In the case of a partnership,by a general partner; • 1 3) In the case of a sole proprietorship,by the proprietor, PART I Page II Permit No.COR-0 10000 • D. MONITORING AND REPORTING(cons) 4) In the case of a municipal,state,or other public facility,by either a principal executive officer,ranking elected official,or other duly authorized employee,if such employee is responsible for the overall operation of the facility from which the discharge described in the form originates. b. Changes to authorization: If an authorization under paragraph a.of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility,a new authorization satisfying the requirements of paragraph a.of this section must be submitted to the Division,prior to or together with any reports, information,or applications to be signed by an authorized representative. c. Certification: Any person signing a document under paragraph a of this section shall make the following certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belied true,accurate,and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations." E. GENERAL REQUIREMENTS I. Monitorinc If monitoring is required by the Division,the following provisions apply: a. Representative Sampling • My samples and measurements taken as required herein shall be representative of the volume and nature of the monitored discharge. All samples shall be taken at the monitoring points specified in this permit and,unless otherwise stated,before the effluent joins or is diluted by any other wastestream,body of water,or substance. Monitoring points shall not be changed without notification to and approval by the Division. b. Analytical and Sampling Methods for Monitoring Analytical and sampling methods utilized by the discharger shall conform to the Colorado Regulations for Effluent Limitations(10.1.5),and to regulations published pursuant to 40 CFR 136. The analytical method selected for a parameter shall be the one that can measure the lowest detected limit for that parameter unless the permit limitation or stream standard for those parameters not limited,is within the testing range of another approved method c. Records The permittee shall establish and maintain records. Those records shall include the following: 1) The date,type,exact location,and time of sampling or measurements; 2) The individuals)who performed the sampling or measurements; 3) The date(s)the analyses were performed; 4) The individual(s)who performed the analyses; 5) The analytical techniques or methods used; 6) The results of such analyses;and 7) Any other observations which may result in an impact on the quality or quantity of the discharge as indicated in 40 CFR 122.44(iX1Xiii). The pennittee shall retain for a minimum of three(3)years records of all monitoring information,including all original strip chart recordings for continuous monitoring instrumentation,all calibration and maintenance records,copies of all reports required by this permit and records of all data used to complete the application for coverage under this permit This period of retention shall be extended during the course of any unresolved litigation regarding the discharge of pollutants by the pennittee or when requested by the Division or Regional Administrator of EPA. PART II Page 12 Permit No.COR-010000 • E. GENERAL REQUIREMENTS(cont) 2. Record-keeping and Internal Reporting Procedures Incidents such as spills or other discharges,along with other information describing the quality and quantity of stormwater discharges,shall be included in the records. Inspections and maintenance activities shall be documented and recorded. The permittee shall retain such records for a minimum of three(3)years from the date generated. All reports required by the permit and/or the Division,and any relevant correspondence,shall be retained for a minimum of five(5)years from the date generated. PART II A. MANAGEMENT REQUIREMENTS 1. Change in Discharge The permittee shall inform the Division(Permits Section)in writing of any intent to construct,install,or alter any process, facility,or activity that is likely to result in a new or altered discharge that is not composed entirely of stormwater and/or allowable non-stormwater discharges identified in Part I.C.3.b. Division notification is also required if the permittee significantly changes the industrial activities at the site such that the industrial activities are no longer consistent with the activity description and/or SIC Code(s)originally identified in the permit application. The permittee shall finish the Division such plans and specifications which the Division deems reasonably necessary to evaluate the effect on the discharge and receiving stream.If applicable,this notification may be accomplished through submittal of an application for a CDPS process water permit authorizing the discharge. The SWMP shall be updated and implemented prior to the changes. Also see Part I.C.2.c.(2). • Any discharge to the waters of the State from a point source other than specifically authorized by this permit or a different CDPS permit is prohibited. 2. Special Notifications-Definitions a. Spill: An unintentional release of solid or liquid material which may cause pollution of state waters. b. Upset: An exceptional incident in which there is unintentional and temporary noncompliance with pennit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error,improperly designed treatment facilities,inadequate treatment facilities,lack of preventative maintenance,or careless or improper operation. 3. Noncompliance Notification a. If,for any reason,the permittee does not comply with or will be unable to comply with any discharge limitations, standards or permit requirements specified in this pennit,except as addressed in sub-paragraph c.of this section,the permittee shall,at a minimum,provide the Water Quality Control Division and EPA with the following information: I) A description of the discharge and cause of noncompliance; 2) The period of noncompliance,including exact dates and times and/or the anticipated time when the discharge will return to compliance;and 3) Steps being taken to reduce,eliminate,and prevent recurrence of the noncomplying discharge. • PART II Page 13 Permit No.COR-010000 • I. MANAGEMENT REQUIREMENTS(cord.) b. The pennittee shall report the following instances of noncompliance orally within twenty-four(241 hours from the time the permittee becomes aware of the noncompliance,and shall mail to the Division a written report within five(5)days after becoming aware of the noncompliance(unless otherwise specified by the Division): 1) Any instance of noncompliance which may endanger health or the environment; 2) Any spill or discharge of oil or other substance which may cause pollution of the waters of the state; 3) Any discharge of stormwater which may cause an exceedance of a water quality standard. c. The pennittee shall report all other instances of non-compliance to the Division in the following Annual Report. The reports shall contain the information listed in sub-paragraph(a)of this section. 4. Submission of Incorrect or Incomplete Information Where the permittee failed to submit any relevant facts in a permit application,or submitted incorrect information in a permit application or report to the Division,or relevant new information becomes available,the permittee shall promptly submit the relevant application information which was not submitted or any additional information needed to correct any erroneous information previously submitted. 5. Bvoasa The bypass of treatment facilities is generally prohibited. 6. Upsets • a. Effect of an Upset An upset constitutes an affirmative defense to an action brought for noncompliance with permit limitations and requirements if the requirements of paragraph b of this section are met (No determination made during administrative review of claims that noncompliance was caused by upset,and before an action for noncompliance,is final administrative action subject to judicial review.) b. Conditions Necessary for a Demonstration of Upset A permittee who wishes to establish the affirmative defense of upset shall demonstrate through properly signed contemporaneous operating logs,or other relevant evidence that: I)An upset occurred and that the permittee can identify the specific cause(s)of the upset; 2)The permitted facility was at the time being properly operated; 3)The permittee submitted notice of the upset as required in Part II.A.3.of this permit(24-hour notice);and 4)The permittee complied with any remedial measures required under Section 122.7(d)of the federal regulations. c. Burden of Proof In any enforcement proceeding the permittee seeking to establish the occurrence of an upset has the burden of proof 7. Removed Substances Solids,sludges,or other pollutants removed in the course of treatment or control of discharges shall be properly disposed of 41, in a manner such as to prevent any pollutant from such materials from entering waters of the State. PART II Page 14 Permit No.COR-010000 • MANAGEMENT REQUIREMENTS(cont.) 8. jrlinimization of Adverse Impact The pennittee shall take all reasonable steps to minimize any adverse impact to waters of the State resulting from noncompliance with any terms and conditions specified in this permit,including such accelerated or additional monitoring as necessary to determine the nature and impact of the noncomplying discharge. 9. Reduction.Loss,or Failure of Stormwater Controls The pennittee has the duty to halt or reduce any activity if necessary to maintain compliance with the pennit requirements. Upon reduction,loss,or failure of the stormwater control,the permittee shall,to the extent necessary to maintain compliance with its permit,control production,or remove all pollutant sources from exposure to stormwater,or both until the stornwater controls are restored or an alternative method of treatment/control is provided. It shall not be a defense for a permittee in an enforcement action that it would be necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit. 10. Proper Operation and Maintenance The pennittee shall at all times properly operate and maintain all facilities and systems of treatment and control(and related appurtenances)which are installed or used by the pennittee to achieve compliance with the conditions of this pennit. Proper operation and maintenance includes effective performance,adequate funding,adequate operator staffing and training,and adequate laboratory and process controls,including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of the permit. '2. RESPONSIBILITIES • 1. Inspections and Rleht to Entry The permittee shall allow the Director of the State Water Quality Control Division,the EPA Regional Administrator,and/or their authorized representative(s),upon the presentation of credentials: a. To enter upon the permittee's premises where a regulated facility or activity is located or in which any records are required to be kept under the teens and conditions of this permit; b. At reasonable times to have access to and copy any records required to be kept under the terms and conditions of this permit and to inspect any monitoring equipment or monitoring method required in the permit;and c. To enter upon the pernittee's premises to investigate,within reason,any actual,suspected,or potential source of water pollution,or any violation of the Colorado Water Quality Control Act. The investigation may include,but is not limited to,the following: sampling of any discharge and/or process waters,the taking of photographs,interviewing pennittee staff on alleged violations and other matters related to the permit,and access to any and all facilities or areas within the pennittee's premises that may have any effect on the discharge,permit,or any alleged violation. 2. Doty to Provide information The permittee shall famish to the Division,within the time frame specified by the Division,any information which the Division may request to determine whether cause exists for modifying,revoking and reissuing,or terminating coverage under this permit,or to determine compliance with this permit. The permittee shall also furnish to the Division,upon request,copies of records required to be kept by this permit. • PART B Page 15 Permit No.COR-010000 • 3. RESPONSIBILITIES(cont.) 3. Transfer of Ownership or Control Certification under this permit may be transferred to a new pennittee if: a. The current permittee notifies the Division in writing 30 days in advance of the proposed transfer date;and b. The notice includes a written agreement between the existing and new pennittees containing a specific date for transfer of permit responsibility,coverage and liability between them;and c. The current permittee has met all fee requirements of the State Discharge Permit System Regulations,Section 61.15. 4. Modification.Suspension,or Revocation of Permit By Division All permit modification,termination or revocation and reissuance actions shall be subject to the requirements of the State Discharge Permit System Regulations,Sections 61.5(2),61.5(3),61.7 and 61.15,5 C.C.R. 1002-61,except for minor modifications. a. This permit,and/or certification under this permit,may be modified,suspended,or revoked in whole or in part during its term for reasons determined by the Division including,but not limited to,the following: i) Violation of any terms or conditions of the permit; 2) Obtaining a permit by misrepresentation or failing to disclose any fact which is material to the granting or denial of a permit or to the establishment of terms or conditions of the permit; • 3) Materially false or inaccurate statements or information in the application for the permit; 4) Promulgation of toxic effluent standards or prohibitions(including any schedule of compliance specified in such effluent standard or prohibition)which are established under Section 307 of the Clean Water Act,where such a toxic pollutant is present in the discharge and such standard or prohibition is more stringent than any limitation for such pollutant in this permit. b. This pennit,and/or certification under this pennit,may be modified in whole or in part due to a change in any condition that requires either a temporary or permanent reduction or elimination of the pennitted discharge,such as: 1) Promulgation of Water Quality Standards applicable to waters affected by the permitted discharge;or 2) Effluent limitations or other requirements applicable pursuant to the State Act or federal requirements;or 3) Control regulations promulgated;or 4) Data submitted pursuant to Part I.D.2 or other available information indicates a potential for violation of adopted Water Quality Standards or stream classifications. c. This permit,or certification under this permit,may be modified in whole or in part to include new effluent limitations and other appropriate permit conditions where information submitted pursuant to Part I indicates that such effluent limitations and permit conditions are necessary to ensure compliance with applicable water quality standards and protection of classified uses. d. At the request of the pennittee,the Division may modify or terminate certification under this permit if the following conditions are met: I) In the case of termination,the permittee notifies the Division of its intent to terminate the operation 90 days prior to the desired date of termination; PART II Page 16 Permit No.COR-0 10000 • 3. RESPONSIBILITIES(cons) 2) In the case of termination,the pennittee has ceased any and all discharges to state waters and demonstrates to the Division there is no probability of further uncontrolled discharge(s)which may affect waters of the State. Alternately,the permit may not be needed and coverage may be terminated if the facility qualifies for the No Exposure Exclusion and the pennittee complies with the requirements outlined in Section 61.3(2)(h)of the State Discharge Permit System Regulations; 3) The Division finds that the pemittee has shown reasonable grounds consistent with the Federal and State statutes and regulations for such modification,amendment or termination; 4) Fee requirements of Section 61.15 of State Discharge Permit System Regulations have been met;and 5) Applicable requirements of public notice have been met 5. permit Violations Failure to comply with any terms and/or conditions of this permit shall be a violation of this permit Dischargers of stonnwater associated with industrial activity,as defined in the EPA Stonnwater Regulation(40 CFR 122.26(bX14),which do not obtain coverage under this or other Colorado general permits,or under an individual CDPS permit regulating industrial stonnwater,will be in violation of the federal Clean Water Act and the Colorado Water Quality Control Act,25-8-101. Failure to comply with CDPS permit requirements will also constitute a violation. Civil penalties for such violations may be up to$10,000 per day,and criminal pollution of state waters is punishable by fines of up to $25,000 per day. 6. Leval Responsibilities The issuance of this permit does not convey any property or water rights in either real or personal property,or stream flows, • or any exclusive privileges,nor does it authorize any injury to private property or any invasion of personal rights,nor any infringement of Federal,State or local laws or regulations. Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities,liabilities,or penalties to which the pennittee is or may be subject to under Section 311 (Oil and Hazardous Substance Liability)of the Clean Water Act Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities,liabilities,or penalties established pursuant to any applicable State law or regulation under authority granted by Section 510 of the Clean Water Act 7. Severability The provisions of this permit are severable. If any provisions of this permit,or the application of any provision of this permit to any circumstance,is held invalid,the application of such provision to other circumstances and the application of the remainder of this permit shall not be affected. 8. Renewal Application If the permittee desires to continue to discharge,a permit renewal application shall be submitted at least ninety(90)days before this permit expires. If the permittee anticipates that there will be no discharge after the expiration date of this permit, the Division shall be promptly notified so that it can terminate the permit in accordance with Part II.B.4.d. 9. Confidentiality Except for data determined to be confidential under Section 308 of the Federal Clean Water Act and Regulations for the State Discharge Permit System 61.5(4),all reports prepared in accordance with the terms of this permit shall be available . 1 for public inspection at the offices of the Division. The pennittee must state what is confidential at the time of submittal. PART II Page 17 Permit No.COR-010000 • B. RESPONSIBILITIES(cont.) My information relating to any secret process,method of manufacture or production,or sales or marketing data which has been declared confidential by the permittee,and which may be acquired,ascertained,or discovered,whether in any sampling investigation,emergency investigation,or otherwise,shall not be publicly disclosed by any member,officer,or employee of the Commission or the Division,but shall be kept confidential. Any person seeking to invoke the protection of this section shall bear the burden of proving its applicability. This section shall never be interpreted as preventing full disclosure of effluent data. 10. F The permittee is required to submit payment of an annual fee as set forth in the Water Quality Control Act. Failure to submit the required fee when due and payable is a violation of the permit and will result in enforcement action pursuant to Section 25-13-601a seq.,C.R.S.1973 as amended. 11. Reeulrlme an Individual CDPS Permit The Director may require any owner or operator covered under this permit to apply for and obtain an individual or alternate general CDPS permit if: a. The discharger is not in compliance with the conditions of this general permit; b. Conditions or standards have changed so that the discharge no longer qualifies for a general permit;or c. Data/information become available which indicate water quality standards may be violated. The owner or operator must be notified in writing that an application for an individual or alternate general CDPS permit is • required. When an individual or alternate general CDPS permit is issued to an owner or operator otherwise covered under this General Pennit,the applicability of this general permit to that owner or operator is automatically terminated upon the effective date of the individual or alternate general CDPS permit. CDPS GENERAL PERMIT-LIGHT INDUSTRY • TABLE OF CONTENTS PART I A. COVERAGE UNDER THIS PERMIT 2 1. Authority to Discharge 2 2. Application,Due Dates 2 a. Application Due Dates 2 b. Application Form 2 3. Permit Certification Procedures 2 a. Request for Additional Information 2 b. Automatic Coverage 2 c. Individual Permit Required 2 d. General vs.Individual Permit Coverage 3 4. Permit Expiration Date 3 5. Industries Covered Under this Permit 3 a. Types of Industries Covered,by Standard Industrial Classification(SIC)Codes 3 b. Definitions 3 6. Individual Permit Criteria 4 7. Mobile Asphalt and Concrete Batch Plants 4 B. STORMWATER MANAGEMENT PLAN-CONTENTS AND REQUIREMENTS 4 1. Industrial Activity Description 4 2. Site Map 5 3. Stonnwater Management Controls 5 a. SWMP Administrator 5 b. Identification of Potential Pollutant Sources and Best Management Practices 5 • c. Sampling Information 6 d. Preventive Maintenance 6 e. Good Housekeeping 6 f. Spill Prevention and Response Procedures 6 g. Employee Training 6 h. Identification of Discharges other than Stonnwater 6 4. Comprehensive Inspections 6 5. Consistency with Other Plans 7 C. OTHER TERMS AND CONDITIONS 7 1. General Limitations 7 2. SWMP Requirements 7 a. SWMP Preparation and Implementation 7 b. SWMP Retention 7 c. SWMP Review/Changes 7 3. Prohibition of Nonstonnwater Discharges 8 4. Releases in Excess of Reportable Quantities 8 5. Comprehensive Facility Inspections 8 6. SWMP Availability 9 7. Total Maximum Daily Load(TMDL) 9 1a_ • CDPS GENERAL PERMIT-LIGHT INDUSTRY • TABLE OF CONTENTS(cont.) D. MONITORING AND REPORTING 9 1. Annual Report 9 2. Monitoring 10 3. Reporting of Data 10 4. Reporting to Municipality 10 5. Signatory Requirements 10 E. GENERAL REQUIREMENTS 11 1. Monitoring 11 a. Representative Sampling 11 b. Analytical and Sampling Methods for Monitoring 11 c. Records 11 2. Recordkeeping and Internal Reporting Procedures 12 PART II A. MANAGEMENT REQUIREMENTS 12 1. Change in Discharge 12 2. Special Notifications-Definitions 12 • 3. Noncompliance Notification 12 4. Submission of Incorrect or Incomplete Information 13 5. Bypass 13 6. Upsets 13 a. Effect of an Upset 13 b. Conditions Necessary for a Demonstration of Upset 13 c. Burden of Proof 13 7. Removed Substances 13 8. Minimization of Adverse Impact 14 9. Reduction,Loss,or Failure of Treatment Facility 14 10. Proper Operation and Maintenance 14 B. RESPONSIBILITIES 14 1. Inspections and Right to Entry 14 2. Duty to Provide Information 14 3. Transfer of Ownership or Control 15 4. Modification,Suspension,or Revocation of Permit By Division 15 5. Permit Violations 16 6. Legal Responsibilities 16 7. Severability 16 8. Renewal Application 16 9. Confidentiality 16 10. Fees 17 11. Requiring an Individual CDI'S Permit 17 i -Ib- COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT Water Quality Control Division WQCD-P-B2 • 4300 Cherry Creek Drive South 9enver,Colorado 80246-1530 RATIONALE STORMWATER DISCHARGES ASSOCIATED WITH LIGHT INDUSTRIAL ACTIVITY GENERAL PERMIT IN COLORADO THIRD RENEWAL COLORADO DISCHARGE PERMIT NUMBER COR-010000 L INTRODUCTION The permit is for the regulation ofstormwater runofffrom a wide variety of types of light industry. This Rationale will explain the background of the Storm water program,which industries are covered under this permit,how to apply for coverage under this permit,and what the permit requirements are. A. Changes in this General Permit I. Small Municipal Exemption: The previous Rationale included a discussion of the exemption from industrial stormwater permitting for small municipalities. This exemption ended as of March 10,2003. Municipalities under 100,000 population are now subject to the same stormwater permitting requirements for their industrial facilities(e.g.,gravel pits,wastewater treatment plants,construction projects)as other facility owners and operators. See http://www.cdphe.state.co.us/wa/PermitsUnit/SW-Muni-lad-OA.pdfforfurther information. No changes were made to the permit for this item. • 2. Application Requirements: The permit application requirements have changed slightly to require an email address,V available. See Part IA.1.b. 3. Temporary Coverage: Pan 1 A.3.d of the permit dealt with temporarily covering a facility under the general permit even if an individual permit is more appropriate. This section essentially duplicated the previous section,and so it has been deleted. 4. Batch Plants: Information has been added to Pan IA.7 of the permit,indicating that a batch plant that is dedicated to a specific construction site may instead be covered under a CDPS Construction Storm water general permit certification issued to that site,provided that the site's SWMP includes adequate provisions for the batch plant. 5. Storm water Management Plan(SWMP) a) Compliance Schedule: For newly certified facilities,tithe SWMP prepared in conjunction with the permit application requires a compliance schedule,it generally shall not exceed 60 days. See Pan I.B. b) Site Map: The requirements for the SWMP have been changed to add several items to the site map,such as areas of industrial activities,potential pollutant sources,and sampling point. Ifa permittee's existing SWMP does not already contain these items,the plan must be amended to comply with these changes,by September 1,2006. See Part LB.2. c) SWMP Certification: The previous permit included a requirement that the copy of Stormwater Management Plan that remains at the facility had to include the certification language and signature,as described in Pan LD.5.a. This requirement has been deleted. The signatory requirements of Part 1.D.5.a only apply to the SWMP fit is to be submitted to the Division or to EPA. See Part I.C.2.b. .SUED MAY 31,2006 EFFECTIVE JULY 1,2006 EXPIRATION DATE JUNE 30,2011 • COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Page 2. Permit No. COR-0(0000 • L INTRODUCTION(cant.) d) Deadlines for SWMP Changes: The section on permittee-initiated review and changes to the SWMP has been amended to clearly indicate the deadline by which SWMP changes and implementation are required. Note that this time frame is not a grace period from permit violations. If the original inadequacy constitutes a permit violation,then that violation is not deferred by the timeframe allotted for corrective action.The time limits are those that the Division considers reasonable for making the necessary repairs or modifications,and are included specifically so that inadequacies are not allowed to persist indefinitely.Failure to take the necessary corrective action within the stipulated time limit constitutes an additional and independent permit violation. See Part LC.2.c.2). 6. Non-stormwater Discharges The section on allowable non-stormwater discharges has been expanded to include several new sources,in accordance with the sources that are allowed under EPA's storm water multi-sector general permit. In general,these sources are considered to have a low environmental risk. However,appropriate control measures to minimize the impacts of such sources must be implemented if needed.and the sources and controls must be identified in the SWMP. As an example, discharges of potable water must be handled in such a way that any chlorine present in the discharge is allowed to dissipate before the discharge reaches state waters.See Pan LC.3. 7. (nspections a) Preventive Maintenance vs.Comprehensive Inspections: The sections on preventive maintenance(Part LB.3.d) and comprehensive inspections(Part LC.5)have been changed to emphasize that regular preventive maintenance measures are distinct from specific comprehensive site evaluation,although the former may be incorporated into the latter. b) The term "qualified personnel,"as used in the section on comprehensive inspections,has been defined. See Part • LC.S. c) Inspection Findings: The section on inspection findings has been changed to emphasize that any repairs or maintenance needs identified by the inspection must be completed immediately. Also,any SWMP changes needed as a result of an inspection must be completed and implemented within 60 days of discovery,as per the section on permittee-initiated SWMP changes. See Part LC.S.b. d) The term "significant observations."as used in the section on comprehensive inspections,has been defined. See Part LC.S.c. 8. Total Maximum Daily Load(TMDLI: A section on TMDLs has been added. This section gives a general outline of the additional requirements that may be imposed if the facility discharges to a waterbody for which a stormwater-related TMDL is in place. See Part I.C.7. 9. Signatory Reauirements:For public entities,the term "duly authorized employee."as used in the section detailing who may sign reports to be submitted to the Division,has been clarified. See Part I.D.5.a.4). 10. Record-Keening: The section describing which records must be maintained and for how long has been clarified. See Part LE.2. 11. Changes in Discharge: The section on the types of discharge or facility changes that necessitate Division notification has been clarified. See Part 11.4.1 12. Non-Compliance Notification: The section on notification to the Division regarding instances of non-compliance has been amended to clarify which types of discharges require notification. See Pan Numerous other minor changes were made for clarification purposes only. COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Page 3. Permit No.COR-010000 IL BACKGROUND • The Environmental Protection Agency(EPA)requires that industrial stormwater discharges be regulated under the National Pollutant Discharge Elimination System(NPDES)program. (Now: The Colorado program is referred to as the Colorado Discharge Permit System,or CDPS,instead ofNPDES). The Water Quality Control Division("the Division')has stormwater regulations(SCCR 100241)in place. These regulations require specific types of industrial facilities that discharge stormwater associated with industrial activity(industrial stormwater),to obtain a CDPS permit for such discharge. A facility which discharges industrial stormwater either directly to surface waters or indirectfy,such as through municipal separate storm sewers,must be covered by a permit. A. General Permits The Division has determined that the use of general permits is the appropriate procedure for handling most of the thousands of industrial stormwater applications within the State. I. Types of General Permits: This permit covers a broad range of light industrial activities(see Section III.A of the Rationale). Other stormwater general permits cover industrial activities for heavy industry,auto recycling sand and gravel operations,construction activities and mining. 2. General vs.Individual Permit Coveraee: Currently unpermittedfacilities which the Division determines need to be covered under an individual permit(see criteria in Part 126 of the permit)may be temporarily covered under a general permit,if the Division determines that the benefits of immediate coverage outweigh the difference in permit requirements. The temporary coverage will be inactivated once an individual permit is issued(see Part LA.3.c). Certification of facility under a general permit does not in any way infringe on the Division's right to revoke that coverage and issue an individual permit or amend an(misting individual permit,when such specialized facility attention is required. B. Catenorice!Industries • Discharges of industrial stormwater must meet all applicable provisions of Sections 301 and 402 of the Clean Water Act. These provisions require control of pollutant discharges from categorical industries to a level equivalent to Best Available Technology Economically Achievable(BA?)and Best Conventional Pollutant Control Technology(BC),and arty more stringent controls necessary to meet water quality standards. EPA regulations(40 CFR,Subchapter N)establish numeric effluent limitations for stormwater discharges from facilities in some of the industrial categories. For these facilities,the numeric effluent limitations constitute BAT and BCTfor the specified pollutants,and must be met to comply with this program. Currently,all facility types with numeric effluent limits for stormwater are covered under the general permit for Heavy Industrial Activity,COR-020000. See the permit for Heavy Industry for a list of affected industries. C. permit Reauirements This permit does not require submission of effluent monitoring data in the permit application or in the permit itself. These light industries are considered to typically have a low potential for pollutant levels in their stormwater discharges which would cause a water quality impact,due to the nature of activities occurring on site and the types of materials handled. The narrative requirements include prohibitions against discharges ofnon-stormwater. They require dischargers to control and eliminate the sources of pollutants in storm water through the development and implementation ofa Stormwater Management Plan(SWMP). The plan must include BMPs,which may include treatment of stormwater discharges along with source reduction. Asper EPA,a fully implemented SWMP will constitute compliance with BAT and BCT. It is believed that BMPs are all that is necessary to control water quality impacts. If the Division determines that additional requirements are necessary,they may be imposed as follows: I)at the renewal of this general permit or through an industry-special general permit if the issue is categorical;2)through direction from the Division based on the implementation of a TMDL if the issue is watershed-based;or 3)if the issue is site-specific,through guidance from the Division,based on an inspection or SWMP review or through an individual permit. • COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Page 4. Permit No.COR-010000 • H. BACKGROUND(cont) D. Volations/Penaltin Dischargers ofstormwater associated with industrial activity,as defined in the Regulations for the State Discharge Permit System(6.1.0),which do not obtain coverage under this or other Colorado general permits,or under an individual CDPS permit regulating industrial stormwater,will be in violation of the Federal Clean Water Act and the Colorado Water Quality Control Act,254-101. For facilities covered under a COPS permit,failure to comply with any COPS permit requirement constitutes a violation. Civil penalties for violations of the Act or COPS permit requirements may be up to$10,000 per day. Criminal pollution of state waters is punishable by fines of up to$25,000 per day. III. STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY A. Types of Industries Covered.SIC Codes This permit is intended to cover most new or existing discharges composed entirely of industrial stormwater from facilities required by State regulation to obtain a permit,as listed below. The industries are listed here by their Standard Industrial Classification,or SIC Code. SIC Codes are assigned according to the activity performed by a company. Companies with several activities frequently have several SIC Codes. SIC Codes are often assigned for insurance purposes or when a business registers as a corporation. Industries can also determine their SIC Code by checking with their trade association,Chamber of Commerce,legal counsel,or their local library for the SIC Manual. The Division will generally determine whether permit coverage is appropriate based on a company's primary SIC code. More than one type of industrial activity may be covered under the same certification if the activities are at the same site and are both otherwise covered under this permit. A two digit code,such as 22,means that all industries under that heading,such as 2221,2249,etc.,are covered. • Table III-1 Industries Covered by this General Permit SIC Codes) Industry description 13 Oil and Gas Extraction 20 Food and kindred products(except 2011,2015,2077) 21 Tobacco products 22 Textile mills and products 23 Apparel and other fmished products 24 Timber products processing(except 2491) 25 Furniture and futures 26 Paper and allied products,pulp and paperboard 27 Printing,publishing,and allied industries 2951 Asphalt batch plants 31 Leather tanning and finishing and leather and leather products 32 Stone,clay,glass products,including glass manufacturing(except 3241,3274) 34 Fabricated metal products,except machinery and computer equipment 35 Industrial and commercial machinery and computer equipment 36 Electronic and other electrical equipment and components,except computer equipment 37 Transportation equipment 38 Measuring analyzing,and controlling instruments: photographic,medical and optical 39 Misc.manufacturing industries 4221 Farm product warehousing and storage 4222 Refrigerated warehousing and storage 4225 General warehousing and storage 4952 Wastewater treatment plants with a design flow of 1.0 MGD or more,or required to have an approved pretreatment program under CFR 403 COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Page S. Permit No.COR-010000 HI. STORMWATER DISCHARGES ASSOCIATED WITH INDUSTRIAL ACTIVITY(cont.) . Transportation facilities which have vehicle maintenance,fueling,equipment cleaning or airport deicing including: 40 Railroad transportation 41 Local and suburban transit and interurban highway passenger wansportation 42 Motor freight transportation and warehousing(except 4221.4222,4225) 43 U.S.Postal Facilities' 44 Water transportation 45 Air transportation(facilities that use less than 1000 gallons ofdeicer(s)annually,and/or that have annual ftel sales often than one million gallons/year) 5171 Petroleum bulk stations&terminals 'The Division currently does not have permitting authority over federal facilities. Should this change during the life of this permit,facilities under SIC Code 43 may be covered by this permit. Although the Office of Management and Budget's North American Industry Classification System is intended to replace the 1987 Standard industrial Classification Code.Colorado has decided to continue using the 1987 SIC code system as the primary classifcation system under Colorado's stormwater permits because the stormwater regulations(Colorado Discharge Permit Regulations,Reg.61)refer to these codes and because this code system identifies facilities adequately. EPA is implementing the same policy in its Multi-Sector General Permit. For any facilities that do not require coverage under the stormwater regulations,but still wish to be covered under this general permit,the Division reserves the right to certify them under this permit. The Division also reserves the right to include under this general permit any specific facility not otherwise covered. This determination would be based on the reasonable potential of a specific industrial discharger to contribute to a violation of a water quality standard,or to be a significant contributor of pollutants to state waters. lV. APPLICATION AND CERTIFICAHON • Certification under the permit requires submittal of an application. Upon receipt of all required information,the Division may allow or disallow coverage under the general permit. See Pan 1A.3 of the permit for an outline of the applicable time frames. At least thirty days prior to the anticipated date of discharge,the owner(or operator when the owner does not operate the facility) of the facility shall submit an application as provided by the Division. (Note-Under the Federal regulations,this is referred to as a Notice of Intent,or NOL For internal consistency with its current program,the Division will continue to use the term "application.) Refer to Part LA.2.b of the permit for a description of what must be included in an application for coverage under this permit. If this general permit is applicable,then a certification will be developed and the applicant will be certified under this general permit. V. TERMS AND CONDITIONS OF PERMIT A. ftormwater Management Plans(SWMPs): The purpose ofa SWMP is to identify possible pollutant sources to stormwater and to set out best management practices that,when implemented,will reduce or eliminate any possible water quality impacts. A SWMP shall be developed for each facility covered by this permit. SWMPs shall include BMPs that are selected, installed,implemented and maintained in accordance with good engineering practices to minimize pollutants in the discharge so that the discharge will not cause or contribute to an excursion above any applicable water quality standards. (The plan need not be completed by a registered engineer.) The Division has a guidance document available on preparing a SWMP. The document is on the Division's website at unvw.cdphe.state.co.us/wq/PermitsUnit. • COLORADO DEPARTMENT OF PUBLIC IIEALTh'AND ENVIRONMENT, Water Quality Control Division Rationale-Page 6. Permit No.COR-010000 • V. TERMS AND CONDITIONS OF PERMIT(cont) The plan identifies potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with industrial activity from the facility. In addition,the plan describes practices which will be used to reduce the pollutants in stormwater discharges associated with industrial activity at the facility and to assure compliance with the terms and conditions of this permit. Facilities must implement the provisions of the SWMP as a condition of their permit The SWMP requirements have been amended in this permit.See Section LA.3 of the Rationale for a discussion of the changes. Note that some permittees will need to amend their plan to comply with the additional requirements for the SWMP site map Refer to the permit at Part LB for a complete description of the current SWMP requirements. Submittal of the SWMP is not automatically required under this permit. However,the Division reserves the right to require submittal upon request,and to review the SWMP and require additional measures to prevent and control pollution. It is the Division's intent to request submission of such reports on a selective basis to determine compliance. The SWMP shall include the following items,at a minimum: I. Industrial activity description 2. Site map 3. Storntwater management controls,including: -Name of the SWMP administrator -Identification of potential pollutant sources and Best Management Practices -Sampling information -Preventive maintenance -Good housekeeping -Spill prevention and response procedures • -Employee training -identification of discharges other than stormwater 4. Comprehensive inspections S. Consistency with other plans B. Monitoring: Sampling and testing ofstormwaterfor specific parameters is not required on a routine basis under this permit. However,the Division reserves the right to require sampling and testing,on a case-by-case basis,in the event that there is reason to suspect that compliance with the SWMP is a problem,or to measure the effectiveness of the BMPs in removing pollutants in the effluent. C. Comprehensive Facility Inspections: The permittee will be required to make a thorough inspection of their stormwater management system,at least twice per year On the spring and fall). These inspections shall be documented and summarized in the Annual Report. (See Part LC.5 of the permit.) D. Annual Report: The pennittee will be required to submit an Annual Report,covering January 1 through December 31,on the overall compliance with the SWMP. The Annual Report will be due to the Division on or before February 15 of the following year(See Part I.D.I of the permit). E. Annual Fees: All permittees are required to pay the annual permit administration fee,as described in the Colorado Water Quality Control Act. (See Pan 11.8.10 of the permit) F. Duration ofPermit: The general permit may not exceed five years in duration. In this case,the expiration date is set for June 30,2011. The permiuee's authority to discharge under this permit is approved until the expiration date of the general permit. The permittee must apply for recertification under the general permit at least 90 days prior to its expiration date. • Kathryn Dolan March 13,2006 COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division Rationale-Page 7. Permit No. COR-010000 VII. RESPONSE TO PUBLIC NOTICE COMMENTS • The Division received comments on the proposed amendment from the Environmental Protection Agency. Based on these comments, the following changes/clarifications were made to the renewal permit: A. Temporary Coverare: Part LA.3.d was deleted,as it was redundant. See Section I.A.3 of the Rationale. B. Batch Plants: Part LA.7 has been expanded to provide additional explanatory information about permit coverage for asphalt and concrete batch plants.See Section 1.4.4 of the Rationale. Kathryn Dolan May 25,2006 • • ATTACHMENT A STORMWATER SYSTEM INSPECTION FORM RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT WASTEWATER TREATMENT FACILITY Inspector: Date: 1. Survey the grounds of the facility for evidence of erosion, if found, report the location and the extent of erosion (i.e., width, depth and length.) 2. Survey all physical stormwater controls (i.e., ditches, culverts, rip-rap,etc...) for signs of failure or damage. If failure or damage is found,report the type of structure damaged,the location of the structure, and the extent of visible damage. • 3. Survey all potential pollutant storage sites. Verify that existing retention structures are of adequate size to retain any potential eaks and these structures are in good condition. [CHEMICAL#1]: [CHEMICAL#2]: Wastewater: Sludge: Grit: Oil Drums: 4. Check grading around all the buildings to determine if stormwater is easily diverted away from the buildings into the appropriate stormwater drain system. Report the location and extent of any variations: • • RESOURCE COLORADO WATER AND SANITATION METROPOLITAN DISTRICT STORMWATER MANAGEMENT PLAN The following information provided by Resource Colorado Water and Sanitation Metropolitan District (RCWSMD) fulfills the minimum requirements for a light industrial storm water management plan as presented in the STATE OF COLORADO, GENERAL PERMIT APPLICATION for STORMWATER DISCHARGES ASSOCIATED WITH HEAVY AND LIGHT INDUSTRIAL ACTIVITY AND METAL MINING, Appendix B. SECTION I: INDUSTRIAL ACTIVITY DESCRIPTION RCWSMD treats domestic and commercial wastewater. Treatment includes solids removal, biological treatment, and chemical and ultraviolet disinfection of wastewater. Initially, the wastewater treatment facility anticipates flows of approximately 300,000 to 500,000 gallons per day (gpd), but will be constructed in phases to reach an anticipated capacity of 4.0 million gallons per day (MGD). Initially, RCWSMD will serve approximately 5,400 acres, but has been in contact with the Towns of Hudson and Keenesburg. RCWSMD has a pretreatment program in place. • SECTION II: SITE MAP See Figure [FIGURE #] through [FIGURE #] of the 2006 Wastewater Utility Plan prepared for RCWSMD. SECTION III: STORM WATER MANAGEMENT CONTROLS The purpose of this section is to provide a description of stormwater management controls appropriate for RCWSMD, and implement such controls. The appropriateness and priorities of controls in the plan shall reflect identified potential sources of pollutants at the facility. The description of stormwater management controls shall address the following minimum components, including a schedule for implementing such controls: III-A: SWMP Administrator: [NAME] The administrator is responsible for assisting the plant manager in implementation, maintenance, and revision of the SWMP. The activities and responsibilities of the administrator shall address all aspects of the facility's SWMP. The Administrator is responsible for implementing the SWMP program by [DATE]. III-B: Identification of Potential Pollutant Sources and Best Management Practices The following information identifies potential sources of pollutants at RCWSMD, and assesses the potential of these sources to contribute pollutants to stormwater discharges associated with RCWSMD's light industrial activity. The SWMP also • RCWSMD Storm Water Management Plan October 2006 1 JHC Project No.690-01 • describes appropriate Best Management Practices (BMPs)to reduce the potential of these sources to contribute pollutants to stormwater discharges. Table III-1 identifies potential sources of pollutants related to the following activities at PCWA: (1)loading and unloading operations, (2) outdoor storage activities, (3)outdoor processing activities, and(4) on-site waste disposal practices. The table also assesses the risk(low to high) of each potential pollutant coming in contact with stormwater discharges. Table III-1: Potential Sources of Pollutants and Risk Analysis SO1 R('1', t('"l l\ 1'1'ILS IO\I('I I1 silo ('1( ItvI.L1 ( ON rvyLvIS vI ION ( O\ i.AIAILI) Risk Domestic (3) Moderate to Yes—exterior Low Untreated High Biological concrete tanks Wastewater Concern [Chemical#1] [Chemical#2] Biosolids (1) (2) (3) (4*) Low Biological Yes— steel Low dumpster with • cover Moderate to Grit(headwork (4*) Yes—steel Low solids) High Biological dumpster with Concern cover Motor Oil 4* =Temporary on-site storage. Biosolids are removed daily and grit is removed weekly. The dumpster cover is placed over the grit when the grit is taken outside for disposal. The dumpster cover for the biosolids is pulled over the biosolids when staff determines precipitation may adversely affect the contents of the dumpster or prior to disposal. Best Management Practices: 1) Stormwater diversion: All plant facilities are constructed with grading that directs the flow away from the buildings to stormwater ditches and culverts. These culvert and ditched come together at a common discharge point at [LOCATION]. By diverting flow away from the buildings, RCWSMD minimizes opportunities for stormwater contamination. In addition to proper grading, RCWSMD contains all potential sources of stormwater contamination as seen above in the fourth column of Table III-1. 2) Materials handling and spill prevention: As listed in the column entitled "Structurally Contained", in Table III-1, all materials are structurally contained either with concrete berms or steel dumpsters regardless of • RCWSMD Storm Water Management Plan October 2006 2 JHC Project No.690-01 • whether they are stored inside or outside of a building. This practice minimizes the chances of stormwater pollution resulting from a leak. In the case of a spill caused during the transfer of materials, RCWSMD has several means of containment to limit pollution of stormwater. In the case of[CHEMICAL#1] and [CHEMICAL#2], if a spill occurred while transferring liquid from a tanker truck to on-site storage tanks, RCWSMD staff would use absorbing sand compounds to soak up the liquids. The absorbing sand compounds would then be shoveled up and deposited in a dumpster for off-site disposal. Shoveling the material back into the dumpsters cleans up Biosolid or grit spills. 3) Sediment and erosion prevention: RCWSMD keeps all slopes around the facility seeded with native grasses that stabilize the soil. Soil and slope disturbance rarely occur under normal operating conditions. During construction soils/slopes may be disturbed. RCWSMD requires contractors to install and maintain proper stormwater controls during construction and re-seed disturbed areas after construction. The stormwater discharge point(between the [LOCATION] and [LOCATION]) for the site is lined with rip-rap to eliminate soil erosion from high volume stormwater flows. The plan shall Identify areas,which,due to topography,activities,or other factors,have a high potential for significant soil erosion,and identify measures taken to limit erosion. • III-C. Sampling Information- RCWSMD does not and has not sampled stormwater discharges from the site. However, if stormwater discharge monitoring were required, RCWSMD could easily install any one of its wastewater samplers at the site discharge point located between the [LOCATION] and [LOCATION]. The plan shall include a summary of any existing discharge sampling data describing pollutants in stormwater discharges,anda descriptionof each proposed sampling point,should monitoring be required III-D. Preventive Maintenance -RCWSMD will, at a minimum, bi-annually inspect the stormwater system (consisting of ditches and culverts)and the surrounding terrain for signs of damage or failure. Any noted damage or failure will be corrected as soon as possible. During normal daily operations, staff will be asked to report any damage or failure of the stormwater system if such is found. A preventive maintenance programs required,and shall involve inspection and maintenance of stormwater management devices(cleaning oil/water separators,catch basins,etc.)as well as inspecting and testing plant equipment and systems to uncover conditions that could cause breakdowns or failures resulting in discharges of pollutants to surface waters. III-E. Good Housekeeping- RCWSMD staff constantly clean and maintain the facility during normal working hours. Trash disposal occurs on a weekly basis for regular domestic trash and grit removal. Biosolids removal occurs on a daily basis during normal working hours. Additionally, RCWSMD has on staff an employee whose main task is plant housekeeping. • RCWSMD Storm Water Management Plan October 2006 3 JHC Project No.690-01 • Good housekeeping requires the maintenance of a clean,orderly facility. This part of the SWMP shall address cleaning and maintenance schedules,trash disposal and collection practices,grounds maintenance,etc. III-F. Spill Prevention and Response Procedures—Appropriate material handling procedures and storage requirements for spills is discussed in section III-B, 2. All potential spills will drain to the main stormwater ditch/culvert system which discharges at the [LOCATION] Procedures for cleaning up spills shall be identified in the plan and made available to the appropriate personnel. The necessary equipment to implement a clean up shall be available to personnel. III-G. Employee Training -Employee training shall occur, at a minimum, bi- annually at or near the same time the site stormwater inspections are made. If necessary, employees will be informed of any additions or changes to the stormwater management program at weekly staff meetings. III-H. Identification of Discharges other than Stormwater- RCWSMD has one other discharge point on site used to discharge treated domestic,;wastewater. This discharge point(001) is covered under RCWSMD's NPDES permit CO- JNUMBER1. Section IV: Comprehensive Inspections. • As stated above, inspections will occur on a bi-annual basis (preferably fall and spring). See Attachment A for the Inspection Report form. The inspections shall be completed by the SWMP Administrator or someone appointed by the SWMP • Administrator. The inspection reports will be kept on file at RCWSMD for no less than five years. Annual reports will contain summaries of any deficiencies found during the inspections and how such deficiencies were corrected. A file of the inspections reports and annual reports shall be made available to the Division upon request. Section V: Consistency with Other Plans. Not applicable at this time, SWMPs may reflect requirements for Spill Prevention Control and Countermeasure(SPCC)plans under section 311 of the Clean Water Act ibr Best Management Practices(BMPs)Programs otherwise required by a COPS permit.and may incotpdrate any part of such plans into the SWMP by reference. • RCWSMD Storm Water Management Plan October 2006 4 JHC Project No.690-01 • CONCEPT STAGE OFFSITE SANITARY SEWER STUDY FOR PIONEER FARMS Weld County, Colorado JN: 3325 September 7, 2005 Revised September 19, 2005 Prepared for: • Pioneer Communities, Inc. 9145 E. Kenyon Avenue, Suite 200 Denver, Colorado 80237 (303) 843-9742 Prepared by: Daryl O. Lindeman, P.E. Principal Carroll & Lange, Inc. 165 South Union Boulevard, Suite 156 Lakewood, Colorado 80228 (Fax) 303-980-0917 303-980-0200 • • CONCEPT STAGE OFFSITE SANITARY SEWER STUDY FOR PIONEER FARMS This concept stage sanitary sewer evaluation of potential offsite flows through the Pioneer project to the proposed wastewater treatment plant located in Section 32 is based on the following information and assumptions: 1. The limits of the offsite sewer basins are set by the sewer service area (SSA) in the Weld County Comprehensive Plan Amendment (Section 1-60 and associated maps). 2. The six offsite sewer basins (West, South, Southeast, East, North, and Central) are defined by the service area limits and topography (basin ridge lines). 3. The future developed land uses in the offsite basins are assumed to be similar to the Pioneer project. 4. The average sanitary sewer flow rate generation estimated for the Pioneer project (on a per acre basis) is used to estimate the potential fully developed • flow rates generated from the offsite basins. 5. Approximate pipe sizing for the sanitary sewer outfalls utilizes minimum slopes of 0.20%, pipe roughness of n=0.012, and pipe design flow depth of 50%. Please refer to the following enclosed maps: 1. Offsite Sanitary Sewer Basins Map (August 2005) 2. Anticipated Land Use Map (9/19/05) 3. Potential Offsite Sanitary Sewer Routes (9/19/05) Also, please refer to the back-up calculations found in the appendix. The maps illustrate the likely locations where future offsite sewage flows may enter the Pioneer Farms project and how those flows may be routed through the project to the wastewater treatment plant (to be located in Section 32). The offsite basin "West" is relatively small (approximately 400 acres) and its likely outfall is through the Pioneer Farms proposed development in Section 2. At the . developer's direction, sanitary sewer lines in Section 2 and continuing CONCEPT STAGE OFFSITE SANITARY SEWER STUDY • FOR PIONEER FARMS Page 2 downstream to the treatment plant are being sized to accommodate the potential future flow from the offsite basin "West". The other five offsite basins (South, Southeast, East, North, and Central) are relatively large and have likely routes to the treatment plant that do not seem to necessitate integrating/upsizing the proposed Pioneer Farms sewer lines. In each of those cases, the offsite basin has an independent route along county roads, across non-Pioneer Farms property, or through Pioneer Farms planned open spaces to reach the treatment plant. In some situations the offsite basins would have a future sewer line that would be parallel to a Pioneer Farms sewer line in a common utility corridor. During the planning and development of the Pioneer Farms project the utility corridors can be established such that, depending on the actual types and timing of offsite development, future sewer lines can be practically constructed to serve the offsite properties. A summary of the six-offsite sanitary sewer basins is given below. Please note • that the estimated pipe sizes shown are for fully developed offsite basins with independent conveyance to the treatment plant. Offsite Basin Approx. Basin Approx. Peak Est. Required I.D. Size (Acres) Flow rate (cfs) Pipe Diameter (inches) Remarks West 400 1.8 18 Pioneer lines are to accept this flow South 23,000 52.4 60 Independent Line Southeast 7,500 20.5 42 Independent Line East 3,500 10.9 33 Independent Line North 1,500 5.4 24 Independent Line Central 1,800 6.2 27 Independent Line or combined with "South" • CONCEPT STAGE OFFSITE SANITARY SEWER STUDY • FOR PIONEER FARMS Page 3 APPENDIX (Back-up Calculations) • • 3j a9 • ; Pkneer- Secoate.. 6ener r , Esh n,Jes 6 uer ear/'s F/o os li 'A For Sewer es+cn Ses u..se.: • /o(o80..Qf a per /i Per daj (,,ice 3 pecple_/�per DM ill ;or ' rahw4r rP,suclene,'o•Q P�annA'tq Are". U `�� Fa /nix use areas /Are Is Jess /a, seafntj apvp -P.ewer reop/& per und-, use 300 call per aced per D1. an Flo aeeeant r .e. Js! t49r commercial) uses. ' c x x soo k = O.000444 e�-DG( fz a.r��y,� 3Loosea 718141 fi 3- r 1F IA Sedgy E1en\d 95Osiuele" a X lZ Jape > /O)&ooa.pc = e-cii inirge eso sAicI 3 x 's pc J 1;4900g.pce = O.o In'el's 1 4 /Goo a,�u�a„ s X _F pepee = g2laaelra = 0.o¢96efs 1j' 4. isnrversi miter 7t 5 1to�y.2d� 5X O.ctO144 O.002ocis I l i (9/MJos) A 1 • � I cc Or-r 5ife ,5'ewQier Genoa E451-1)-nalleS a ,14 use on sire, /and uses and oVera/ on shied sewage per ae.ra -Plow races Io es{Ana o4 614- P/0“--15 : 11 i j ; 7'o*a 1 on sit aVe e d4J clotende is: {1 0.334 cc's a i h 3it3t eSs + /• `Pis" ens ail rely] : 5.723 &9s 1! The sewar- rrodu-C 'on rave is • 6.723 C-Fs + 52G7'aere.s = O.00l0ID cis/ere- @be, 9,� In ?{l jtno r, real(l'owazes r core esilna -ed by dicier)14 kilo_ has/711-5 agerete 4Yew� ancp (a nta1 Pyin9 1 `tai- oda- by a- peak 4' Jor (Table 203-v) . • '1 }to/9k) /1 2 im b = 1. 5' 7aCFS "i'sy- (berver) PF = 3.797/F�) • or PF = 3.747/6. ga Ica o>)o a V TABLE 203.V PEAK FLOW FACTORS . AVERAGE PEAK FLOW AVERAGE PEAK FLOW FLOW FACTOR FLOW FACTOR (CFS) (CFS) 0.178 5.000 (max) 0.713 4.019 0.196 4.993 0.891 3,871 0.214 4.920 1.070 3.754 0.232 4.853 1.248 3.658 0.250 4.793 1.426 3.577 0.267 4.740 . 1.604 3.507 0.285 4.688 1.783 3.445 0.303 4.640 1.961 3.391 0.321 4.596 2.139 3.342 0.339 4.554 2.317 3.297 I• 0.357 4.514 2.496 3.256 0.374 4.479 2.674 3.219 0.392 4.444 2.852 3.184 - 0.410 4.411 3.030 3.152 0.429 4.379 3.209 3.122 0.446 4.349 3.387 3.093 0.463 4.321 3.565 3.067 0.481 4.294 3.743 3.042 • 0.499 4.267 3.922 3.018 0.517 4.242 4.100 2.996 0.535 4.218 4.278 2.974 0.553 4.194 4.456 2.954 0.570 4.173 4.902 2.909 0.588 4.151 5.348 2.865 0.606 4.130 6.239 2.792 0.624 4.110 7.130 2.730 0.642 4.090 8.021 2.676 • 0.677 4.054 9.804 2.588 0.695 4.036 10.695 2.550 -17- ,2.239 A3.az (9//9/0., R 3 23.437 2.23' HHl 111 1 • I;} San► far/ Sewer Pipe Sizihq (eon dart- tote) qil 111 Ui lif j3 Pipe Also/ale. Slope. Fdr aortae/1y ai- lISize. Mihirnut\ Mas1.r 50%Flom) /{t 4 y,a� 3i (inch) Slope.. (°o Planninj (�� rt=0.o/2 . (efs) 111 y 1. ll I F S O.#0 0440 ail/ o 1; /0 0.25 0.2C 0.57 il iz 0.20 O. 2o ©.8G 11 IS O. /5 0.20 /.54 `ll 3 " I8 0. /I o. a o ;.s4 a,l 0. 04 0. 2 0 3.8+ 111 III 014 ©.08 0.ao 66. 8 o • ` { a? 0.07 OJo 7,50 il 30 O0 O. zo 9.94 1`t ` ; 433 00.05- m. 2o o 12 .81 1s11134 ooS D. .20 /Gallo it k 0.04 0. O 24.37 Ili ill V 0. 03 0. 20 34-71 1l 5310. 2 O 47.43 'l 60 ©..20 13.07 1 jiit 1' i1 III • it !`l t 4 + ill Fl ma.fece Peak and Pipe Sizes 10 ' rr s1 � � rox p"° Approx. ESfimaiel l3Bastn. Basin Average. Peak Peak Rertire/P Z /7 Size (acres) F1owrde Fa tfor Oceania Pipe-Size- 1 1'1 ilWegf h/00 0.49 4.4/1 leg e-fs /8 111 ?, Sou�"k a3,000 a 3.2z 223 52.0 40" 1'f 15oui1 srst 7,goo 7 5. x.676 ;0. 3 " "AZ {i VI Fast 3,500 3.53 3.047 /0.8 33" 1'( 111/ orth /f5-00 1. 5/ 3.S07 5. 3 ale" dl ;1# Cenfral �( /, Soo /. 82 3.341 6.2 a7 ?;I III gl� icy • .1 ` f9Aths) '4 5 Opinion of Probable Construction Cost Page 1 oft BNR Construction Coat Index Client Name: Resource Colorado Date Index • ProjectName: Wastewater Initial Nov-06 7,910.81 Project Number. 690-01 Current Nov-06 7,910.81 Item Quantity I Unit I Unit Cost S I Cost S 1 Extended Aeration Package Plant 2 3 Yard Piping and Appurtenances 1 LS. 200,000.00 200,000 4 Perimeter Fencing 2,000 LF. 25.00 50,000 5 Generator 1 LS. 80,000.00 80,000 6 Headworks 7 30'-0"x 40'-0"Block Building 1,200 S.F. 300.00 360,000 8 Rotary Screen I BA. 55,000.00 55,000 9 Vortex Grit Removal Equipment 1 EA. 66,000.00 66,000 10 Composite Sampler 1 EA. 5,500.00 5,500 11 Pump Station(pumps,valves,controls,.etc.) 2 LS. 30,000.00 60,000 12 ExtendedAeratian Package Plant 13 Equipment 1 LS. 675,000.00 675,000 14 Flat Concrete Work(i.e slab on grade) 600 C.Y 550.00 330,000 15 Elevated and Vertical Concrete Work 0 C.Y. 600.00 0 16 Admin./UVBlowerBuilding 17 80'-0"x 42'-0"Block Building 3,360 S.F. 300.00 1,008,000 • 18 Ultraviolet Disinfection Equipment 1 LS. 48,000.00 48,000 19 Composite Sampler 1 BA. 5,500.00 5,500 20 Aerate Digester(2 @71.000 gallons) 21 Equipment(blowers,diffusers,etc.) 2 LS. 45,000.00 90,000 22 Flat Concrete Work(Le slab on grade) 100 C.Y 550.00 55,000 23 Elevated and Vertical Concrete Work 300 C.Y. 60000 180,000 24 1.5 Million Gallon Staging Pond 25 Earthwork R Excavation 7430 C.Y. 20.00 148,600 26 60 mil HDPE Liner(metalled) 18600 S.F. 0.65 12,090 27 Subtotal from page 2 2,093,331 Subtotal(Sum of lines 2 alms 26) $5,522,021 Construction Contingency 20.0% $1,104,404 Design Status(Check One) Opinion of Probable Cost ..$6,626 0(f X Conceptual Design Preliminary Design JACOBSON HELGOTH CONSULTANTS,INC. Final Design Project ManageE_24.2Date: ni/�JO4.- The Engineer,using hk or her professional Judgement,has developed this stated Opinion of Probable Construction Cost based upon the design status'dangled above. Development of this Opinion has included consideration of design Input level:however, the drevmsfances under which the work is expected to be undertaken,the cost and avallabitiy of materials,labor and services, probable bidder response and the economic conditions at the time of bid edkdlation are beyond the control of the Engineer and will Impact actual bid costs. Should bidding be delayed,these costs should be reviewed and.If necessary,adjusted to a more il applicable Eiginewh g News Record Construction Cost Index Opinion of Probable Construction Cost(continued) Page 2 oft • Client Name: Resource Colorado Project Name•. Wastewater Utility Plan Project Number: 690-01 Item Quan, Unit I Unit Cost S I Cost S 28 Influent/Effluent Metering Manhole 29 Controller and Level Sensor 2 EA. 3,000.00 6,000 30 Parshall Flume 2 EA. 5,000.00 10,000 31 Precast Manhole 2 EA. 1,800.00 3,600 32 Effluent Pipe to Creek(12"diameter) 7,500 L.F. 48.00 360,000 33 Site Earthwork 5% L.S.(of L3-L32) 3,808,290.00 190,415 34 Site Electrical,Lighting and Controls 20% LS.(of L3-L32) 3,808,290.00 761,658 35 HVAC 5% LS.(of L3-L32) 3,808,290.00 190,415 36 Engineering/Legal 15% LS.(of L3-L32) 3,808,290.00 571,244 37 38 39 • 40 41 42 43 44 45 46 47 48 49 50 51 52 ' 53 54 55 56 57 Subtotal page 2 2,093,331 • Opinion of Probable Construction Cost Page l of 2 ENR Construction Cost Index • Client Name: Resource Colorado Date Index Project Name: Wastewater Utility Plan Initial Nov-06 7,910.81 Project Nanrber: 690.01 Current Nov-06 7,910.81 Item Quantity Unit Unit Cost$ Cost$ 1 Sequencing Batch Reactor 2 3 Yard Piping and Appurtenances 1 L.S. 200,000.00 200,000 4 Perimeter Fencing 2,000 LE 25.00 50,000 5 Generator 1 L.S. 80,000.00 80,000 6 Ileadworkr 7 30'-0"x 40'-0"Block Building 1,200 S.F. 300.00 360,000 8 Rotary Screen 1 BA. 55,000.00 55,000 9 Vortex Grit Removal Equipment 1 F.A. 66,000.00 66,000 10 Composite Sample 1 EA. 5,500.00 5,500 11 Pimp Station(pumps,valves,controls,etc.) 2 L.S. 30,000.00 60,000 12 Sequencing Batch Reactor 13 Equipment 1 L.S. 190,000.00 190,000 14 Flat Concrete Work(i.e slab on grade) 600 C.Y 550.00 330,000 15 Elevated and Vertical Concrete Work 550 C.Y. 600.00 330,000 16 AdminJW/BlowerBullding • 17 80'-0"x 42'-0"Block Building 3,360 S.F. 300.00 1,008,000 18 Ultraviolet Disinfection Equipment 1 L.S. 60,000.00 60,000 19. Composite Sampler 1 EA. 5,500.00 5,500 20 Aerobic Digester(2®82,000 gallons) 21 Equipment(blowers,diffusers,etc.) 2 L.S. 50,000.00 100,000 22 Flat Concrete Work(i.e slab on grade) 110 C.Y 550.00 60,500 23 Elevated and Vertical Concrete Work 325 C.Y. 600.00 195,000 24 1.5 Million Gallon Staging Pond 25 Earthwork&Excavation 7430 C.Y. 20.00 148,600 26 60 mil HDPE Liner(installed) 18600 S.F. 0.65 12,090 27 Subtotal from page 2 2,042,706 Subtotal(Sum of lines 2 thm 26) $5,358,896 Construction Contingency 20.0% $1,071,779 Design States(Check One) Opinion of Probable Cost $6,431,000 , X Conceptual Design Preliminary Design JACOBSON HELGOTH CONSULTANTS,INC. Final Design A -. Project Manager: ,r/ , Date: i ll1S/D4. The Engineer,using his or her professional Judgement has developed this stated Opinion of Probable Con sbuction Cost based upon the design status Identified above. Development of this Opinion has Included consideration of design input level; however,the circumstances under which the work Is expected to be undertaken,the cost and availability of materials,labor and Ili services,probable bidder response and the economic conditions at the time of bid solicitation are beyond the control of the Engineer and will Impact actual bid costs. Should bidding be delayed, these costs should be reviewed and, if necessary, adjusted to a more applicable Engineering News Record Constmcaon Cost index. Opinion of Probable Construction Cost (continued) Page 2 oft • Client Name: Resource Colorado Project Name: Wastewater Utility Plan Project Number: 690-01 Item Quantity Unit Unit Cost S Cost S 28 Influent/Effluent Metering Manhole 29 Controller and Level Sensor 2 BA. 3,000.00 6,000 30 Parshall Flume 2 BA. 5,000.00 10,000 31 Precast Manhole 2 BA. 1,800.00 3,600 32 Effluent Pipe to Creek(12"diameter) 7,500 L.F. 48.00 360,000 33 Site Earthwork 5% L.S.(of L3-L32) 3,695,790.00 184,790 34 Site Electrical,Lighting and Controls 20% L.S.(of L3-L32) 3,695,790.00 739,158 35 HVAC 5% L.S.(of L3-L32) 3,695,790.00 184,790 36 Engineering/Legal 15% L.S.(of L3-L32) 3,695,790.00 554,369 37 38 39 40 41 • 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Subtotal page 2 2,042,706 • Opinion of Probable Construction Cost Page 1 of 2 ENR Construction Cost Index • Client Name: Resource Colorado Date Index Project Name: Wastewater Utility Plan Initial Nov-06 7,910.81 Project Number: 69001 Current Nov-06 7,910.81 Item Quantity Unit Unit Cost$ Cost$ 1 Membrane Bloreaetor 2 3 Yard Piping and Appurtenances 1 L.S. 200,000.0 200,000 4 Perimeter Fencing 2,000 L.F. 25.00 50,000 5 Generator 1 L.S. 80,000.00 80,000 6 Headwork: 7 30'-0"x 40'-0"Block Braiding 1,200 S.F. 300.00 360,000 8 Rotary Satan 1 EA. 55,000.00 55,000 9 Vortex Grit Removal Equipment 1 EA. 66,000.00 66,000 10 Composite Sampler 1 EA. 5,500.00 5,500 11 Pump Station(pumps,valves,controls,etc.) 2 L.S. 30,000.00 60,000 . 12 Membrane Bioreactor 13 Equipment 1 L.S. 825,000.00 825,000 14 Flat Concrete Work(Le slab on grade) 300 C.Y 550.00 165,000 15 Elevated and Vertical Concrete Work 300 C.Y. 600.00 180,000 16 AdminJUV/BlowerBuilding • 17 80'-0"x 42'-0"Block Building 3 360 S.F. 300.00 1,008,000 18 Ultraviolet Disinfection Equipment 1 L.S. 48,000.00 48,000 19 Composite Sampler I EA. 5,500.00 5,500 20 AerobklXgemer(7®34.000ganonr) 21 Equipment(blowers,diffusers,etc.) 2 LS. 20,000.00^ 40,000 22 Flat Concrete Work(i.e slab on grade) 50 C.Y 550.00 27,500 23 Elevated and Vertical Concrete Work 200 C.Y. 600.00 120,000 24 1.5 Million Gallon Staging Pond 25 Earthwork&Excavation 7430 C.Y. 20.00 148,600 26 60 mil HOPE Liner(installed) 18600 S.F. 0.65 - 12,090 27 Subtotal from page 2 2,105,706 Subtotal(Sum of lines 2 that 26) $5,561,896 Construction Contingency 20.0% $1,112,379 Design Status(Check One) Opinion of Probable Cost $6,674,000 X Conceptual Design Preliminary Design JACOBSON IIELGOTH CONSULTANTS,INC. Final Design Project Manager: Date: /I1i�f04 The Engineer,using his or her professional Judgement,has developed this stated Opinion of Probable Construction Cost based upon the design status identified above. Development of this Opinion has included consideration of design input level: however,the circumstances under which the work is end to be undertaken,the cost and availability of materials,labor and lil services, probable bidder response and the economic conditions at the time of bid solicitation are beyond the control of the Engineer and will impact actual bid costs. Should bidding be delayed, these costs should be reviewed and, if necessary, adjusted to a more applicable Engineering News Record Construction Cost Index. Opinion of Probable Construction Cost (continued) Page 2 of 2 • Client Name: Resource Colorado Project Name: Wastewater Utility Plan Project Number. 690-01 Item I Quantity Unit Unit Cost S Cost S 28 Infest Metering Manhole 29 Controller and Level Sensor 2. EA. 3,000.00 6,000 30 Parshall Flume 2 EA. 5,000.00 10,000 31 Precast Manhole 2 EA. 1,800.00 3,600 32 Effluent Pipe to Creek(12"diameter) 7,500 L.P. 48.00 360,000 33 Site Earthwork 5% LS.(of L3-L32) 3,835,790.00 191,790 34 Site Electrical,Lighting and Controls 20% LS.(of L3-L32) 3,835,790.00 767,158 35 HVAC 5% LS.(of L3-132) 3,835,790.00 191,790 36 Engineering/Legal 15% LS.(of L3-L32) 3,835,790.00 575,369 37 38 39 40 41 • 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Subtotal page 2 2,105,706 • Opinion of Probable Construction Cost Page 1 oft ENR Construction Cost Index • Client Name: Resource Colorado Date Index Project Name: Wastewater Utility Plan Initial Nov-06 7,910.81 Project Number: 690-01 Current Nov-06 7,910.81 _ Item Quantity Unit I Unit Cost S I Cost S 1 Activated Sludge w/Extended Aeration 2 3 Yard Piping and Appurtenances 1 LS. 200,000.00 200,000 4 Perimeter Fencing 2,000 LF. 25.00 50,000 5 Cunerator 1 LS. 80,000.00 80,000 6 Ifeadworks 7 30'-0"x 40'-0"Block Building 1,200 S.F. 300.00 360,000 8 Rotary Screen 1 EA. 55,000.00 55,000 9 Vortex Grit Removal Equipment 1 EL 66,000.00 66,000 10 Composite Sampler I EA. 5,500.00 5,500 11 Pump station(pumps,valves,controls,etc.) 2 LS. 30,000.00 60,000 12 Activated Sludge w/BxtendedAeration 13 Equipment 1 LS. 300,000.00 300,000 14 Flat Concrete Work(i.e slab on grade) 800 C.Y 550.00 440,000 15 Elevated and Vertical Concrete Work 800 C.Y. 600.00 480,000 16 AdminJUV/Blower Building • 17 80'-0"x 42'-0"Block Building 3,360 S.F. 300.00 1,008,000 18 Ultraviolet Disinfection Equipment 1 LS. 48,000.00 48,000 19 Composite Sampler 1 EA. 5,500.00 5,500 20 Aerobic Digester(I(4 71.000 gallons)21 Equipment(blowers,diffusers,etc.) 2 LS. 45,000.00 90,000 22 Flat Concrete Work(i.e slab m grade) 100 CS 550.00 55,000 23 Elevated and Vertical Concrete Work 300 C.Y. 600.00 180,000 -24 1.5 Million Gallon Staging Pond 25 Earthwork&Excavation 7430 C.Y. 20.00 148,600 26 60 mil HOPE Liner(installed) 18600 S.F. 0.65 12,090 27 Subtotal from page 2 2,190,081 Subtotal(Sum of lines 2 tbm 26) $5,833,771 Construction Contingency 20.0% 51,166,754 Design Status(Check One) Opinion of Probable Cost S7R001,000 X Conceptual Design Preliminary Design JACOBSON HELGOTH CONSULTANTS,INC. Final Design Project Manager: C1/24.- Date: 41,/t -tic The Engineer,using his or her professional judgement,has developed this stated Opinion of Probable Construction Cost based upon the design status kleetied above. Development of this Opinion has included consideration of design input level;however, the droumstances under which Me work le expected to be undertaken,the cost and availability of materials,labor and services, III probable bidder response end the economic conditions at the time of bid solicitation are beyond the control of the Engineer and will Impact actual bid costs. Should bidding be delayed,these costs should be reviewed and.If necessary,adjusted to a more applicable Engineering News Record Construction Cost Index. Opinion of Probable Construction Cost(continued) Page 2 of 2 • Client Name: Resource Colorado Project Name: Wastewater Utility Plan Project Number: 690-01 Item Quantity Unit Unit Cost$ j Cost$ 28 Influent/Effluent Metering Manhole 29 Catholic:and Level Sensor 2 EA. 3,000.00 6,000 30 Paula Flume 2 EA. 5,000.00 10,000 31 Precast Manhole 2 EA. 1,800.00 3,600 32 Effluent Pipe to Creek(12"diameter) 7,500 LF. 48.00 360,000 33 Site Earthwork 5% LS.(of L3-L32) 4,023,290.00 201,165 34 Site Electrical,Lighting and Controls 209E LS.(of L3-132) 4,023,290.00 804,658 35 HVAC 5% LS.(of L3-L32) 4,023,290.00 201,165 36 EnAneeringfLegal 15% L.S.(of L3-L32) 4,023,290.00 603,494 37 38 39 • tip 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 Subtotal page 2 2,190,081 • ® Client Name: Resource Colorado Project No. 690-01 Jacobson fit{, Project Name: Wastewater Utility Plan CONSULTANTS Subject: Operation&Maintenance Costs Extended Aeration Sequencing Batch Membrane Coarse Bubble Item Package Plant Reactor Bioreactor Extended Aeration Equipment Loads _ Influent Pump Station 5.0 - 5.0 5.0 5.0 — Screen 2.0 2.0 2.0 2.0 Grit Vortex _ 1.5 1.5 _ 1.5 1.5 Grit Pump 0.25 0.25 _ 0.25 0.25 0.25 0.25 0.25 0.25 Grit Washer _ — Pre-Aeration_ Basin Mixer --- 5.0 --- Pre-Aeration Basin Blower _ --- --- 40.0 --- Process Aeration 150 _ 30.0 50.0 _ 65.0 Anoxic Mixer --- --- _ 5.0 5.0 - --- 15.0 --- Permeate Pumps --- _-. Mixer --- 2.0 5.0 - 5.0 - --- 15.0 _ 15.0 RAS Pump 15.0 --- - Clarifier - _ 2.0 _ --- --- 2.0 Digester 10.0 7.5 7.5 10.0 _ UV 3.0 6.0 3.0 3.0 Ancillary Energy(Lighting,HVAC,etc.)' 19.86 19.86 19.86 Total HP 189.0 74.4 174.4 _ 133.9 • Electricity Cost($/kW-hr) $0.075 _ $0.075 $0.075 $0.075 Annual Power Cost $92,633 $36,443 $85,455 $65,606 Administrative Costs Contract Sludge Hauling(wet) $105,120 $124,830 $47,304 $105,120 District Manager(salary&benefts) _ $90,000 $90,000 __ $90,000_ $90,000 Annual Contract Operations $52,500 $52,500 .$52,500 $52,500 Annual Equipment Maintenance Costs2 $6,700 -- $6,170 $11,800 $7,050 Raw Annual Admin,Operations and $347,000 $309,900 $287,100 $320,300 Maintenance Cost O&M Contingency Factor(+15%) $52,050 $46,485 $43,065 $48,045 Total Annual Admin, Operations and $399,100 $356,400 $330,200 $368,300 Maintenance Cost '1995 Commercial Buildings Delivered Energy End-Use Intensities,by Building Activity(10^3 Btu/sq.ft.) (http://buildingsdatabook.eere.energy.gov/docs/7.4.f.pdf],(97,200 BTU/sq.ft.•yr for Public Order Building Class) with an estimate of 4,560 S.F.of building space during the 0.30 MGD phase. 'Estimated at 1%of aggregate initial equipment capital cost 0 Helgot� Project SZCWSMU c am' ti'M Oaten �Xv N S U L T A N T S Subgect Ftins 4= EM'' Sheet 4 of Zt JROO OCTON% '1l1ESE NIT nt h:M t 9 Wu.%WE A"OFastokouzn0N OF Tile Thai roNTR1$uTMAS FROM OM ER.,NoN-QEStwntt1At- emt llk tyct PS Wnn*4 THE. P1afEER DvE&t$WE) T, AS WEu. As mE .CoNTR\%tunoWs ritcttt %It LE V14414 'OETACI\t1)„ SwatE. riArsat.1 Al '.HEP EThviva,AtitES) **JP 1lflJ\FANILV. ASzwaaT\ON% 1 gTHE'EqutVMsWJT IliStiOrsrnAL Dats" (EAU) EAsEo OvoW The Assownow TW1Y A sta0a r11Ntty Daman HousEN4tn.Wtu-,p� 14AvE. AN AvEP,/,a,E OF 3:ZWortsAho ASsw.aF 2l2yep/hh• _l NFRWQRAGutoANtatr-oKENr;Twis1s.3,REconnElt A 'Pesk Coma Flow c a cs Ss cyS4/dwj•puan 3� RC1Se '4awDATED '1/26/05 S m'its 1-4 1- OF THE Re. than% Wccttno RtciiER, 80y.,W„I.8SFb, 1O7, Srrt1, Am Tovaalat ES • '0 RCIS° Nat°(9 NIA : 410 Ftemt So6S Wto CREAIEV`lm1 THE NEw teitto E.NT 5) 10 E1.EHENTtO %homes AT 525.votratt5Cs, 2 M,got.E b n-r 600 snAst,is eq. • 2 MG%SaltoolS AT R00 %mt eg% Ea. (i) Saw.Fw1uY Egowbatrc(cc€) = 2-17-9449 AssoutE"Fw.T RE-Mh_Toss Avo Sel,00ls VItu-teiva.DP Ai THE SALT RATE As T11s.'Po41nAM014 FLOWS FMN"Stow s,OMCFS,SWu- INEs s' _ '25c 1/e (NFFSNgcA GA).,p9.26) (14-10 EWAMEESX25 liallanttottuAlb41_ 11,'1 SO TilAtal '> 43.2 SFE s- CL+W3 Vitalk *Stl,00h- Nos% wers' = 12?airOt,Eutr. (f,twit Sahoa0(5255tuoEwis)(l2 9,Q/sTu.•,1,,11 = 31,E`ii`"'"1 => 139 SCEs Rows Cit t`Scl eoh-Sh.wus" =25 of&brown-.&ey C(2tllvotESe,h)(IdlOstu) + (2 NS)(900stu)I• (25gd/stu: 4= 15,0005 L1 _� 215.1 ® Project ROAM VI) Computed LA 113 Date Project No. Lein-n1 checked Cone Date hr ilijaW ONSUtTANTS Subject Wwc JritI ONCelln Sheet 2 of *)•. FLOW , • v o intra1A MOM-FgHlt W-MtE 2ES vS. SINGLE Fawta' R>:stbEIJCES = 75.lot @sopa: t*tw As-mamaREiw,non4')tsn\c.T Res IcRcaiifl ota GoVEINIOS1ME f%*ERkflQI,USE,k1 SO Say tees OF THE S•aEM.SuNE 9,2006. pg Lt-t.) USE-1-%% VAWE To OMP AINE 144. OF Eovi.E VER.MFR ; (1.2 WOPLE.AFR)• .156) => 2.4 1'Eovt.E/MFR . Ilk vs; of TIM..Tarot 10,0'10 RE.mooJr tAt- 13Nw l'' STrat tw,VtomER"s • S ctttH PLRN) 80% est. 8,056 wturtS. SINGLE.VcaAILY ONCIS Av•It 20% elk 2,014 WILulls Islo -jr j (%ps6 .►)hXr12 A•aik{1 + (2,oW►,h,(2.y P /1n,)(8594ct*'J y) MI _} 1 02,bb% coy/6m az tun-OUT > x,566.5 SFEs • �_ f-i'_ Project Resource Colorado WWUP J[[[�AAWiJJJ777lllJJJllllil 'v Project No.: 690-01 �� --_ Subject Solids Handling Cala for Activated Sludge CONSULTANTS Computed by: LMBVA-13 Date: 10/93/06 Checked by: MJB t1,(�YJI Date: 10/23/06 Page 1 of 2 7`� Dry Waste Sludge(lbs.) 0.8 Influent Waste Flow(Gal.) 1000 Mon Gallons per Day(MGD) 0.3 Pounds of dry sludge per day 240 Wasted Sludge(%Concentration) 036 PoundslDay of Wasted Sludge 00671.4 Gallons/Day of Wasted Sludge - 6222.0 Percent Reducllon 40 Pounds of dry sludge per day(reduced) 144 Percent Solids(Decanted) 0.75 Gallons/Day Stabilized Sludge 2302.2 • Sludge Hauling(thy tons/day) 0.07 Sludge Hauling(Dry tons/year) 26.3 Percent Solids(dewate ing) 20 Sludge Hauling(Wet tons/year) 131.4 Cost of Hauling per Ton $30.00 Timely HauWg Coats $3,942.00 Yearlycost for hauling Idewate goccurs If Percent Solids changes to 0.76 Sludg Hatay(Wit tonahsar) 3504.0 Yearly Hauling Coats(new%Solids) $105,120.0 Yearly cost for hauling If no dewatetl g WAS Designed for(Gallons/day) 2302.2 WAS Wasted Sludge%Concentration 0.75 Basin Dimensions: Wall thickness(It) 1.3 Basepad tlYdmess(R) 3 (ft) 26 Width(R) 28 Wall Height(R) 16 Liquid Depth(ft.) 14 Number of Basins 2 Each basin handles(Gallons/day) 1151.1 I F` Project Resource Colorado WWUP Jacobson lidgoth wed No: 690-01 Subject Solids Handling Cake for Activated Sludge CONSULTANTS Computed by: t.MB UK, Date 10/23/06 Checked by: MTh #29% Date 10/23/06 Page 2 of 2 Volume of Each Basin(ftA3) 9464 Volume of Each Basin(gallons) 70796.6 CDPHE Requirement of storage(Days) 60 COPHE Rqulrement of storage(C) 15 Number of Days ofStorage 61.5 Concrete Estimate Baseped(RN) 2623 BaseWd(9"3) 93.4 Wale-East,Middle,West(043) 1664 Walls-East,Middle,West(y'3) N.6 Walk-North,South(ftA3) 1109.3 Walls-North,South(p3) 41.1 • Total Concrete per Digester(ftA3) 6296.3 Total Concrete per Digester(yA3) 196.2 • Number of Digesters 2 • Total Concrete(ftA3) 10592.7 Total Concrete(yA3) 392.3 Notes: Metcalf and Eddy-pg.773 Activated Sludge=0.6-OS pound thy sludge thousand housand gallons of WW lbw Normal Tams we Assumptions Bold terms are Calculated C ® Project Resource Colorado WWUP Project No.: 6900'1 LMAA7o\/ll Subject Solids Handling Cala for Package Plant /CONSULTANTS Computed by: LMB (ik% Date: 10/23/06 Checked by: MJB ),,t( a Date: 10/23/06 Page 1 of 2 Waste Sludge(lbs.) 0.8 raid Waste Fbw(Gal.) 1000 r Gallons per Day(MGD) 0.3 11 of dry sludge per day 240 filliowiteddsSl dge(%Concentration) 0.35 //„ of Sludge 665714 teib�sonslD.y of Wasted Sludge 3222. ir Red utlon 40 ,unds of dry sludge per day(reduced) 144 /�l' Solids(Decanted) 0.75 panWay Stabilized Sludge 2302.2 • ///ipdge Hauling(Drytonslday) 0.07 /'ydge Hauling(Dlytonsryear) 26.3 /,per Solids(dewateri g) 20 f ,,!dose Hauling(Wet tonslyear) 1314 /rat of Hauling per Ton $30.00 71 dy Haring Costs $3,642.00 Yearly cost for hauling If dewaWbg occurs IPercent Bolds changes to 0.75 leg Hauling(Wet tarolyear) 3604.0 /p ly ply Hauling Costs(new%solids) 5104120.0 Yearly cost for hauling if no dewatering ,I/ Dealpned for(Gallons/day) 2302.2 fnWasted Sludge%Concentration 0.76 Dimensions: Wall thickness(ft) 1.3 limped Oddness(ft) 3 Length(ft) 26 Width(ft) 26 Well Height(ft) 15 Liquid Depth(ft) 14 Number of Basins 2 basin handles(Gasonaldsy) - 1151.1 • • ® Project Resource Colorado WWUP Jacobson %m)w Project No.: 690-01 �GI�R/�Al l iC, lAll Subject Solids Handling Cala for Package Plant CONSULTANTS Computed by: MB (4$ Date•. 10/23/06 Checked by: MJB µ(l8 Date 10/23/06 Page 2 of 2 �I Volume of Each Basin(ft"3) 9404 Volume of Each Basin(gallons) 70755.5 CDPHE Requirement of storage(Days) 60 COPHE Rqulrem ent of storage(C) 15 Number of Days of Storage 51.5 ConeMe Estimate Sniped NM) 2523 Damped(y"3) 934 Walls-East,'fiddle,West(ft"3) 1554 Watt-East,Middle.West(y"3) 41.5 Wale-North,South(ft"3) 1109.3 Walls-North,South(y"3) 41.1 Total Concrete per Digester(14"3) 6291.3 Total Concrete per Digester(y"3) 1962 Number of Digesters 2 • Total Concrete(ft"3) 10692.7 Total Concrete(y"3) 392.3 Notes: Metcalf and Eddy-pg.773 Adlvated Sludge=0.6-0.6 pouts dry sittigeMousand gallons of WW flow Normal Terms are Assumptions Bold terms are Calculated I • Jacobson Project Resource Colorado WWUP f eigo a Project 690-01 1 iG+1�VLL1 Subject Solids Handling Cala for MU CONSULTANTS Computed by: I.MB fnr Date. 1W23/06 Checked by: Mjg 1492 Date: 10/23/06 Page 1 of 2 Dry Waste Sludge(lbs.) 0.6 Enviroquip Manual-0.4Ibslbs BOD Removal Influent Waste Flow(Gal.) 1000 Kersey PER-294 t.per day Melon Galan per Day(MGD) 0.3 SBR I.0.64 lbs.b BOD5 removed MBRx1.6=SBR Pounds of dry sludge per day 180 Wasted Sludge(%Caroenhstlon) 1 PowMsiDay of Wasted Sludge 18000 GNIoneiDay of Wasted Sludge 21511.3 Percent Redudtlan 40 PouMs of dry sludge per day(reduced) 108 Percent Solids(Decanted) 125 GaltonslDayStabilWd Sludge 1036.0 • Sludge Hauling(Dry tons/day) 0.05 Sludge Hauling(Dry tonslyear) 192 Percent Solids(dewatedn g) 20 Sludge Hauling(Wet tons/year) 98.6 Cost of Haling per Ton 930.00 Yearly Hauling Costs 92,956.60 Yearly oast for hauling if dewated g occurs if Percent Solids changes b 1.25 Sludg Hauling(Wet tons/year) 157s.s Yearly Hauling Costs(new%Solids) 947,304.0 Yearly coat for hauling If no dentedng WAS Designed for(Gallondday) 1038.0 WAS Wasted Sludge%Concentration 1.25 Basin Dimensions: Way tltdmess(ft.) 1.3 Boasted tlnkbrass(0.) 3 Length(R) 18 Width 01.) 18 Wall MOM(t) 16 Liquid Depth(t) 14 Number of Basins 2 Each basin handles(Gallons/day) 518.0 • ® Project Resource Colorado W WUP Jacobson j1g�("L Project No.: 690-01 --`t7_ Subject Solids Handling Cale for MBR CONSULTANTS Computed by: LMB Offe Date 10/2'x/06 Checked by: ups Wl-8 Date: 10/23/06 Page 2 of 2 Volume of Each Basin(ft'3) 4636 Volume of Each Basin(gallons) 33931.6 CDPNE Requirement of abfage(Days) 60 COPSE Rq*ementof storage(C) 16 Number of Days of Storage 65.6 Concrete Estimate Basepad(11.3) 1323 Banged(y"3) 49.0 Walls-East,Wlddie.Pint(ft•3) 1162 Waits-East,!Addis,West(y*3) 42.7 Wags-North,South(ft"3) 7864 Wails-North,South(y"3) 264 Total Concrete per Digester(ft"3) 3243.0 Total Concrete per Digester(y"3) 120.1 Number of Digesters 2 • Total Concrete(ftA3) 6486.0 Total Concrete(y"3) 240.2 Notes: Metcaf and Eddy-pg.773 Extended Aeration it;0.7-1.0 pound dry aludgenhousand gallons of WW flow Normal Tens we Assumptions Bald twos are Calabted • Project Resource Colorado WWUP Jacobson l4cicwa thh Project No.: 69041 1 a1a0 Subject Solids Handling Calm for SBR CONSULTANTS r,,,� Computed by: LMB flid3 Date: 10/23/06 Checked by: MJB Mf)a Date 10/23/06 Page 1 of 2 Dry Waste Sludge(lbs.) 0.95 Kersey PER-294l>s per day Influent Waste Row(Gal.) 1000 0.64 lbs/lb SODS removed Million Gallons per Day(MOD) 0.3 Pounds of dry sludge per day 285 Wasted Sludge(%Concentration) 0.35 PoundslDay of Wasted Sludge 81425.57143 Galons/Dayof Wasted Sludge 9763.6 Percent Reduction 40 Pounds of dry sludge per day(reduced) 171 Percent Solids(Decanted) 0.75 Gallons/Day Stabilized Sludge 2733.8 • Sludge Hauling(Dry tons/day) 0.09 Sludge Hauling(Dry tons/year) 31.2 Percent Sdids(dewaterng) 20 Sludge Hauling(Wet tons/year) 158.0 Cost of Hauling per Ton $30.00 Yearly Hauling Costs $4,681.13 Yearly cost for hauling If dewatering occurs If Percent Solids changes to 0.75 Sludg Hauling(Wet tans/year) 4161.0 Yearly Hauling Costs(new%Solids) - $124,630. Yearly cost for hauling if no dewatedng 'Digester Designed for(GalloneMay) 2733. WAS Wasted Sludge%Concentration 0.75 Basin Dimensions: Wall thldmess(fl.) 1.3 . - Basepad tltickness(R) 3 I-englh(fl.) 28 Width(ft.) 28 Wall Height(R) 18 Liquid Depth(4) 14 Number of Basins 2 Each basin handles(Gallons/day) - 1366.9 • Project Resource Colorado WWUP Jaabson Helgot� Project No.: 69041 11�lJLLl Subject Solids Handling Cola for SBR CONSULTANTS Computed by: LM6 Date: 10/23/06 Checked by: MJB Date: 1W23/06 Page 2 of 2 Volume of Each Basin(ft"3) 10978 Volume of Each Basin(gallons) 82109.2 CDPHE Requirement of storage(Days) 60 COPHE Rqukement of storage(C) 15 Number of Days of Storage 60.1 Concrete Estimate Basepad(M3) 2883 Basepad(y=3) lots Walk•East,Middle,West(ft•3) 1792 Walls-East,Middle,West(y=3) 66,4 Walls-North,south(ft"3) 1194.7 Walls-North,South(y=3) 44.2 Total Concrete per Digester(ft"3) 6869.7 Total Concrete per Digester e3) 217.4 • Number of Digesters 2 Total Concrete(ft"3) 11739.3 Total Concrete(y"3) 434.8 Notes: Metcaf end Eddy-pg.773 Extended Aeration=0.7-1.0 pound dry sludgeNhousand gallons of WW now Normal Terms are Assumptions Bold terms are Calculated A.G. Wassenaar 218O Sout imr:clnedcttrerarg7.1% "• 303-759-8100 Fax 303.750-2920 Geotechnical and Environmental Consultants Co www.agwassenaar.com • PRELIMINARY GEOTECHNICAL STUDY FOR SITE DEVELOPMENT WASTEWATER TREATMENT PLANT PIONEER DEVELOPMENT NORTHEAST OF WELD COUNTY ROAD 49 AND WELD COUNTY ROAD 22 WELD COUNTY, COLORADO • PREPARED FOR GATEWAY AMERICAN PROPERTIES, LLC 9145 EAST KENYON AVENUE, SUITE 202 DENVER, COLORADO 80237 NOVEMBER 13, 2006 PROJECT NUMBER 91833 A.G. ZNassenaar 2180 South Ivanhoe Street. Suite 5 Denver. Colorado 802 22-5 71 0 303-759-8100 Fax 303-758-2920 • Geotechnical and Environmental Consultants C. www.agwassenaar.com November 13, 2006 Gateway American Properties, LLC 9145 East Kenyon Avenue, Suite 202 { Denver, Colorado 80237 Attention: Ms. Nicole Adams • Subject: Preliminary Geotechnical Study for Site Development Wastewater Treatment Plant Pioneer Development Northeast of Weld County Road 49 and Weld County Road 22 Weld County, Colorado Project Number 91833 Dear Ms. Adams: We have conducted the preliminary geotechnical study for the proposed wastewater treatment plant at the subject site. Our summary of the data collected during our field and laboratory work and our analysis,opinions,and conclusions are presented in the attached report. The purpose of our study • is to provide preliminary design criteria for planning, site development,foundation systems,slabs- on-grade, and drainage for the proposed development. Preliminary pavement design recommendations are also included. In general, the subsurface materials encountered consist of topsoil, sand, and clay overlying sedimentary bedrock. Claystone bedrock was encountered at depths of 19'/:to 24%mfeet below the ground surface. Lignite was encountered in one boring at a depth of 26 feet. Ground water was measured at a depth of 25 feet at the time of drilling. Ground water was measured at a depth of 19 feet when checked one to two days after drilling. One test boring caved at a depth of 26 feet at the time of drilling. Site grading should be feasible using typical construction equipment. The sand materials may be susceptible to caving if trenches are not properly constructed. The structures may be founded on spread or pad-type footings or on structural slabs or mats bearing below frost depth on the natural undisturbed soils and/or properly placed and compacted . • fill. Preliminary design criteria are given in the report. 1 • Gateway American Properties, LLC Project Number 91833 November 13, 2006 Page 2 Slabs-on-grade may require special consideration because of the low expansion potential of the clay soils. Structural floor systems are recommended for any areas where slab movement cannot be tolerated. Foundation concrete should be designed for moderate sulfate exposure. Preliminary pavement thicknesses are presented in the report. Additional recommendations are presented in the following report. If you have any questions regarding the contents of this report or our analyses of the subsurface conditions which will influence the proposed development, please call us. We have appreciated the opportunity to provide this service for you. Sincerely, p RE A. G. WASSENAAR, INC. S•zp�NNpo�Fp' v? : .* NUMBER 32156 :I; K• een A. Noonan, .E. %•r ,.c�� Project Engineer Review; d by: • ' Keith D. Seaton, P. E. Senior Engineer KAN/KDS/kan/lia TABLE OF CONTENTS • TITLE PAGE PURPOSE 1 PROPOSED CONSTRUCTION 1 SITE CONDITIONS 2 FIELD EXPLORATION 2 LABORATORY TESTING 2 SUBSURFACE CONDITIONS 3 SITE DEVELOPMENT 4 Overlot Grading 4 Slopes 6 Construction Excavations 6 Site Drainage 6 Utility Construction 6 SITE CONCRETE AND CORROSIVITY 7 PRELIMINARY FOUNDATION DESIGN CONCEPTS 8 • Interior Floor Construction 9 Drain Systems 9 Backt'ill and Surface Drainage 9 { PRELIMINARY PAVEMENT DESIGN 9 FINAL DESIGN CONSULTATION AND CONSTRUCTION OBSERVATION 11 GEOTECHNICAL RISK 12 LIMITATIONS 12 ATTACHMENTS SITE PLAN FIGURE 1 LOGS OF EXPLORATORY BORINGS FIGURES 2 THROUGH 4 SWELL-CONSOLIDATION TEST RESULTS FIGURES 5 THROUGH 9 GRADATION/ATTERBERG TEST RESULTS FIGURES 10 THROUGH 12 SUMMARY OF LABORATORY TEST RESULTS TABLE I SPECIFICATIONS FOR PLACEMENT OF STRUCTURAL FILL APPENDIX • • PRELIMINARY GEOTECHNICAL STUDY FOR SITE DEVELOPMENT . Wastewater Treatment Plant Pioneer Development Northeast of Weld County Road 49 and Weld County Road 22 Weld County, Colorado November 13, 2006 PURPOSE This report presents results of a preliminary geotechnical study for the proposed wastewater treatment plant to be located in the northwest quarter of Section 32,Township 3 North,Range 64 West, northeast of Weld County Road 49 and Weld County Road 22 in Weld County, Colorado. The study was made to assist in determining preliminary design criteria for planning, site • development,foundation systems,slabs-on-grade and drainage.A preliminary pavement thickness design is also included. Factual data gathered during the field and laboratory work is summarized on Figures 1 through 12 and on Table I. Our opinions and recommendations presented in this report are based on the data generated during this field exploration, laboratory testing, and our experience with similar type projects. PROPOSED CONSTRUCTION We understand the proposed 40-acre site is proposed for a wastewater treatment plant for the Pioneer development. The construction details were not known at the time of this study. The approximate locations of our test borings are shown on Figure 1. Preliminary overlot grading plans were not available at the time of this study. We have assumed that the cut/fill depths will not exceed 10 feet across the site. • Preliminary Geotechnical Study for Site Development Gateway American Properties,LW Project Number 91033 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 1 November 13,2006 7 SITE CONDITIONS • The site is in the northwest quarter of Section 32, Township 3 North, Range 64 West located northeast of Weld County Road 49 and Weld County Road 22 in Weld County,Colorado. The site is rangeland with vegetation consisting of native grasses, cactus and sagebrush. The ground surface slopes to the north and west with approximately 33 feet of relief noted across the supplied topographic map. No bedrock outcrops or bodies of water were observed on the site. HELD EXPLORATION Subsurface conditions were explored by drilling 13 test borings at the approximate locations indicated on Figure 1. The borings were advanced using a 4-inch diameter, continuous flight auger powered by a CME 55 drill rig. At frequent intervals,samples of the subsurface materials { were taken using a Modified California sampler which was driven into the soil by dropping a 140- 1 •pound hammer through a free fall of 30 inches. The Modified California sampler is a 2.5-inch outside diameter by 2-inch Inside diameter device. The number of blows required for the sampler to penetrate 12 inches and/or the number of inches that the sampler is driven by 50 blows gives an indication of the consistency or relative density of the soils and bedrock materials,encountered. Results of the penetration tests and locations of sampling are presented on the"Exploratory Boring Logs", Figures 2 through 4. LABORATORY TESTING The samples taken during drilling were retumed to the laboratory where they were visually classified by a geotechnical engineer. Laboratory testing was then assigned to specific samples to evaluate their engineering properties. The laboratory tests included nine swell-consolidation tests to evaluate the effect of wetting and loading on the selected samples. The results of the swell-consolidation tests are presented on Figures 5 through 9. Six gradation analysis and • Preliminary Geotecbnicel Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 2 November 13,2008 • Atterberg limits tests were conducted to evaluate grain size distribution and plasticity. These results are presented on Figures 10 through 13. In addition, three representative samples were tested for water soluble sulfates, pH, resistivity, and chlorides. The test results are summarized on Figures 2 through 4 and on Table I. SUBSURFACE CONDITIONS Our test borings indicate the subsurface materials encountered consist of topsoil, sand,and clay overlying sedimentary bedrock. Claystone bedrock was encountered at depths of 19'/a to 24Yxfeet below the ground surface. Lignite was encountered in one boring at a depth of 26 feet. Ground iI water was measured in two test borings at depths of 25 and 30 feet at the time of drilling. Ground water was measured at a depth of 19 feet in one test boring when checked one to two days after drilling. One test boring caved at a depth of 26 feet at the time of drilling. A more complete description of the subsurface conditions is shown on Figures 2 through 4. Topsoil was found in all of the test borings. The topsoil encountered consisted of sandy clay and was up to Yz foot thick. It was organic and moist. It was dark brown in color. The topsoil is not considered capable of supporting structures and should be removed. Construction on topsoil is at the sole risk of the Owner. The slightly silty to silty sand encountered in all of the test borings was loose to medium dense, with silt and clay lenses,slightly moist to moist,and was light brown to brown in color.Based upon our laboratory results,the sand exhibited in-situ dry densities ranging from 96 to 113 pounds per cubic foot (pcf), and in-situ moistures ranging from 2 to 22 percent (%). The sample tested exhibited collapse(-4.1%)to low swell(+0.1%)upon wetting and under a loading of 1,000 pounds per square foot (psf). This sand is assessed to possess no to low expansion potential. Preliminary Geotechnicat Study for Site Development Gateway American Properties,Lie Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 3 November 13,2006 The sandy to very sandy clay encountered in five of the 13 test borings was stiff to very stiff,moist, • calcareous,and brown in color. Based upon our field and laboratory results,the clay exhibited an in-situ dry density of 104 pcf at an in-situ moisture content of 22%. The sample also exhibited compression (-0.1%) upon wetting and under a loading of 1,000 psf. This clay is assessed to possess low expansion potential. Claystone bedrock was encountered in three of 13 test borings at depths of 19%to 24''%feet.The claystone was firm to medium hard,silty,sandy,with lignite,slightly moist to moist,and dark brown to brown to olive to rust in color. Based upon our field and laboratory results, the claystone exhibited in-situ dry densities ranging from 101 to 115 pcf,and in-situ moistures ranging from 10 to 23%. The claystone also exhibited compression(-0.4%)to low measured swells(+1.3%)upon wetting and under a loading of 1,000 psf. This claystone is assessed to possess high expansion potential. • Lignite was encountered in one test boring at a depth of 26 feet. The lignite was medium stiff,Iron stained, moist, and black. The lignite is not considered capable of supporting structures. • SITE DEVELOPMENT OVERLOT GRADING 4-1 e assume the fill materials used at the site will be from on-site cut areas. In general, suitable `. organic on-site or off-site soils may be used for structural fill. All existing topsoil or soil containing `-•etation or other deleterious material should be removed prior to placement of new fill. Any zs Serials that have been chemically contaminated should be removed from the site for proper ••sal. Off-site material considered for new fill should be evaluated by our office prior to hauling e site. • ,r Geotechnical Study for Site Development Gateway American Properties.LLC ber 91833 Wastewater Treatment Plant,Pioneer Development r: sanser,Inc. 4 November 13.2006 iConstruction of the fill embankments throughout the site will consist of proper foundation preparation,constructing embankment benching where necessary,disposition of strippings,proper fill placement and compaction, and designing and vegetating slopes in accordance with the analysis performed and the applicable governing regulations. Following are general site grading recommendations: . 'I. It is recommended that we be called to observe and test the fill placement so that a uniform, compacted fill will be placed. 2. Based upon the subsurface information contained in this report, and our assumption that the near surface soils will be used for fill, we have provided general specifications for the project in the Appendix. 3. All topsoil and vegetation beneath planned fill areas should be thoroughly stripped • and removed prior to fill placement. The organic soils or topsoil should be wasted l 0 from the site or stockpiled for future use in revegetating exposed slopes. In no case should these materials be used in new fills or where the stability of slopes Iwill be affected by their low shear strength. i 4. After the fill areas have been cleared,the exposed soils should be scarified to a J I minimum depth of 6 inches, brought to the proper moisture content and then compacted according to the Appendix. 5. The compaction and moisture control of the soils will be dependent upon material• . types. The specifications outlined in the Appendix are based upon providing a fill with sufficient shear strength to support structures and controlling residual swell of expansive soil used in fill sections. 6. Particular attention should be paid to compaction of the exterior faces of slopes (i.e., slopes should be compacted to the minimum specification to the surface of the fill embankment). 7. Other specifications outlined in the Appendix of this report should be followed. Preliminary Geotechnical Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 5 November 13,2006 • SLOPES A slope stability analysis was not conducted as part of this study. Based upon preliminary site specific observation, it appears the existing slopes are stable. Construction of conventional fill slopes should be limited to 2 to 1 or flatter. Cut slopes steeper than 2 to 1 should be evaluated for stability. CONSTRUCTION EXCAVATIONS In our opinion,the foundation and utility excavations may be constructed using conventional earth- moving equipment for the Front Range area. Excavations deeper than 3 feet should be properly sloped or braced to prevent collapse because of caving soils. Ground water may be present in deep utility excavations on some portions of the site. Local,city,county,state,and federal(OSHA) regulations should be followed. • SITE DRAINAGE Based upon the proposed usage of the site, we recommend that provision be made to divert surface runoff away from foundation areas. This may reduce potential problems associated with excess water in the foundation bearing soils. The site should be designed such that a 10%slope can be established in landscaped areas around the structures after foundation construction. Slopes of at least 2% should then be planned in landscaped areas once the water is away from the foundation. Drainage should be directed into the paved areas around the structures. UTILITY CONSTRUCTION Excavations into the overburden soils will encounter primarily sandy clays and silty sands with bedrock in deeper excavations. The claystone bedrock may be considered as a "Type A" soil according to OSHA regulations, the overburden clay may be considered a "Type B" soil and the Preliminary Geotechnical Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 6 November 13,2008 • sands or any soil influenced by ground water as a "Type C" soil. Final determination of the soil types must be made by the contractors "competent person"(as defined by OSHA)at the time of construction. All excavations should be sloped or shored in the interest of safety,following local and federal (OSHA) regulations. The bedrock,when encountered, should stand vertically unsupported,except where fractured or inundated with water. In the interest of safety,bedrock excavations should be sloped as outlined above. In our opinion,the utility excavations may be constructed using conventional earth-moving equipment for the Front Range area. Trench backfill should be well compacted to prevent future settlement. Trenches through lot and common areas should be compacted to the same specifications as required for overlot grading. • Trenches in streets should be compacted to Weld County specifications. Density-compaction testing must be performed during trench backfilling. SITE CONCRETE AND CORROSIVITY Testing performed on selected soil samples indicated water soluble sulfate contents of 100 ppm to 300 ppm. This is considered to be a negligible to moderate concentration relative to potential corrosive attack on concrete. Therefore, all concrete in contact with the soils on the site should be designed for moderate sulfate exposure in accordance with the current American Concrete Institute (ACI) Design Manual. The pH test results were between 5.85 and 7.85. Resistivity test results at in-situ moisture were between 1,715 and 6,882 Ohms/cm. Chloride test results were between less than 0.0001% and 0.0002%. These results are summarized on Figure 2 through 4 and Table I. The results of this Preliminary Geotechnical Study for Site Development Gateway American Properties,LLD Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 7 November 13,2006 testing should be used as an aid in choosing the construction materials in'contact with these soils • and will be resistant to the various corrosive forces. Manufacturer's representatives should be contacted regarding the specific corrosivity resistance to the stated levels of pH, resistivity, and chlorides for their particular product. In addition, local district specifications should be consulted when selecting pipe materials. PRELIMINARY FOUNDATION DESIGN CONCEPTS The foundation recommendations for each structure are dependent upon the subsurface profile and engineering properties of the materials encountered at and near to the depth of the proposed foundation. These are dependent upon the final configuration and construction methods used during overlot grading at the site and the type of structure to be constructed. Therefore,foundation design recommendations for each structure cannot be presented until final site plans are 3 •completed. The Information presented in the following sections presents preliminary foundation concepts which must be finalized for each building site. We should be retained to provide an additional soil and foundation exploration after completion of site grading to provide specific foundation design recommendations for each structure. It is likely that the structures can be supported by footing or pad-type foundations or structural slabs or mats bearing on the natural sands and clays or low expansive fill materials as long as the expansion potential of the soils remains in the low category. The foundation must be constructed below frost depth. Some densification may be required for foundation support in areas where loose sand is encountered at foundation level. The foundation will likely be designed for a maximum soil pressure ranging from 1,000 to 3,000 pounds per square foot (psf). A minimum dead load pressure may be required where clays are present. Bearing capacities can be increased if significant thicknesses of the soils beneath the structures are densified. Preliminary Geotechnical Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 8 November 13,2006 • INTERIOR FLOOR CONSTRUCTION It is likely that the sites will be assessed with a low slab risk performance evaluation. If the risk tolerance for slab movement is zero, structural floors should be considered in all areas. DRAIN SYSTEMS Due to the nature of the subsurface conditions encountered on the site,drain systems should not be necessary unless habitable below grade areas are planned. BACKFILL AND SURFACE DRAINAGE Backfill should be moistened and compacted to reduce future settlement. The site grading should consider a slope of 10% away from the foundations in landscaped areas at the completion of construction. Drainage swales in landscaped areas should slope at a minimum of 2%. Roof drainage should be directed into the surrounding parking areas. PRELIMINARY PAVEMENT DESIGN Pavement design procedures are based on strength properties of the subgrade and pavement materials, along with the assumed design traffic conditions. Subgrade materials, such as those encountered on this site, are potentially expansive and require additional precautions be taken to provide for adequate pavement performance. The pavement design procedures outlined address expansive subgrade materials primarily by modifying the subgrade materials in such a manner as to reduce the swell potential and then by attempting to minimize subgrade wetting after construction. Preliminary Geotechnical Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 9 November 13,2006 Based upon our preliminary analysis, it appears the proposed pavement subgrade materials will • be the upper level sandy clay or clayey sand materials. These soils are summarized below according to their AASHTO Soil Classification System and Group Index Method. Soil AASHTO Classification AASHTO Group Index Silty sand A-1-b, A-3 0 From these soil classifications,we have estimated R-Values in order to determine the preliminary pavement thicknesses. Based on this information and utilizing thickness as determined from the { CDOT Design Nomograph,as accepted by Weld County,the alternatives presented below were calculated. PAVEMENT ALTERNATIVES A-1-b,A-3 Solis • Location HBP HBP/ABC Concrete Parking Areas 5.0" -6.0" 3.0" -4.0" /5.0" -6.0" 5.0" -5.5" Service Drives/Fire Lanes C 6.0" -7.0" 3.5" -4.5"/8.0" -9.0" 5.5" -6.0" HBP=Hot Bituminous Pavement ABC=Aggregate Base Course A design life of 20 years was assumed. It should be emphasized that the design alternatives provided above are preliminary for parking and drive areas. The final design thickness could be• more or less than indicated. Proper surface and subsurface drainage is essential for adequate performance of pavements constructed on these types of subgrade materials. It has been our experience that water from landscaped areas will infiltrate pavement subgrade soils and result in loss of subgrade integrity followed by pavement damage. Therefore, provisions should be made to maintain adequate • Preliminary Geoteehnical Study for Site Development Gateway American Properties,LLC ., Project Number 91833 Wastewater Treatment Plant,Pioneer Development �,:'. 0.G.Wassenaar,Inc. 10 November 13,2006 • drainage and/or contain runoff from such areas. This is especially important since composite pavement sections which include base course tend to promote further subgrade moisture infiltration and damage. In addition,water and irrigation lines should be thoroughly pressure tested for leaks prior to placement of pavement materials. It must be reiterated that the information contained in this section is preliminary in nature. More cor cUtctId aCric'i farck detailed information will be required by Weld County prior to issuance of a paving permit. Therefore, when overlot grading is complete at the site, a final pavement evaluation must be performed. FINAL DESIGN CONSULTATION AND CONSTRUCTION OBSERVATION This report has been prepared for the exclusive use of Gateway American Properties,LLC for the purpose of providing preliminary geotechnical criteria for the proposed project. The data gathered and the conclusions and recommendations presented herein are based upon the consideration of many factors including, but not limited to, the type of structures proposed, the configuration of the structures, the proposed usage of the site, the configuration of surrounding structures, the geologic setting,the materials encountered,and our understanding of the level of risk acceptable to the client. Therefore,the conclusions and recommendations contained in this report shall not be considered valid for use by others unless accompanied by written authorization from A. G. Wassenaar, Inc. It is recommended that A. G. Wassenaar, Inc. be retained to provide general review of the final design and specifications in order that the recommendations presented may be properly interpreted and implemented. Our firm should also be retained to provide geotechnical engineering and material testing services during construction of the site grading, utilities, and Preliminary Geolechniwl Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development 4,4., A.G.Wassenaar,Inc. 11 November 13,2006 drainage features. The purpose is to observe the construction with respect to the geotechnical . design concepts,specifications or recommendations,and to facilitate design changes in the event that subsurface conditions differ from those anticipated prior to start of construction. It is also recommended that our firm be retained to perform a final pavement design for the streets in the subdivision and to perform a final foundation design report for each structure in the development after site grading is complete. GEOTECHNICAL RISK The concept of risk is an important aspect of any geotechnical evaluation. The primary reason for this is that the analytical methods used to develop geotechnical recommendations do not comprise an exact science. The analytical tools which geotechnical engineers use are generally empirical and must be tempered by engineering judgment and experience. Therefore, the solutions or recommendations presented in any geotechnical evaluation should not be considered risk-free • and,more importantly,are not a guarantee that the interaction between the soils and the proposed structure will perform as desired or intended. What the engineering recommendations presented in the preceding sections do constitute is our best estimate,based on the information generated during this and previous evaluations and our experience in working with these conditions,of those measures that are necessary to help the development perform in a satisfactory manner. The Owner must understand this concept of risk,as it is they who must decide what is an acceptable level of risk for the proposed development of the site. LIMITATIONS • We believe the professional judgments expressed in this report are consistent with that degree of skill and care ordinarily exercised by practicing design professionals performing similar design services in the same locality, at the same time, at the same site and under the same or similar • Preliminary Geotechnical Study for Site Development Gateway American Properties,LLC Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 12 November 13,2006 • circumstances and conditions. No other warranty, express or implied, is'made. In the event that any changes in the nature, design or location of the facility are made, the conclusions and recommendations contained in this report shall not be considered valid unless the changes are reviewed and the conclusions of this report are modified or verified in writing. Because of the constantly changing state of the practice in geotechnical engineering, and the potential for site changes after our field exploration, this report should not be relied upon after a period of three years without our firm being given the opportunity to review and,if necessary, revise our findings. The test borings drilled for this study were spaced to obtain a reasonably accurate picture of underground conditions for design purposes. Variations frequently occur from these conditions which are not indicated by the test borings. These variations are sometimes sufficient to necessitate modifications in the designs. If unexpected subsurface conditions are observed by any party during site development, we should be notified to review our recommendations. Our scope of services for this project did not include, either specifically or by implication, any research,identification,testing,or assessment relative to past or present contamination of the site by any source, including biological (i.e., mold, fungi, bacteria, etc.). If such contamination were present, it is likely that the exploration and testing conducted for this report would not reveal its existence. If the Owner is concemed about the potential for such contamination or pollution, additional studies should be undertaken. We are available to discuss the scope of such studies with you. Our scope of services for this project did not include a local or global geological risk assessment. • Therefore,issues such as mine subsidence,slope stability,active faults,etc.were not researched or addressed as part of this study. If the Owner is concerned about these issues,we are available to discuss the scope of such studies upon your request. Preliminary Geotechnicai Study for Site Development Gateway American Properties,LW Project Number 91833 Wastewater Treatment Plant,Pioneer Development A.G.Wassenaar,Inc. 13 November 13,2006 WELD COUNTY ND.3D I ' ; SCALE: 1•=3O01 VICINRY MAP N0TT0 SCALE mhm 4805 483° T&6 • • • • 48.T138 TS-9 TB- • T&11 TB-1 3 • • 4825 4825 4825 INDICATES APPROXIMATE ELEVATION OF EXISTING GROUND IN FEET. NOTE:AU.LOCATIONS ARE APPROXIMATE A.G_Wassenaar Oeatechn ilandEnvkar.sNlCow,.. c. SITE PLAN PROJECT NO 91833 &VICINITY MAP FIGURE 1 9 TEST BORING BORING TESTG TEST TEST R ELEV.NO.1 ELEV..2 NO BORING BORING BORING ELEV.4809 ELEV.4815 ELEV.4818 ND�4826 2 • ELEV. 0 0_ 18/12 : 15/12 : 18/12 - 5 00-103 B/12 18/12 10/12 - MC-7 pH-6.O3 MC-2 1 CO-100 5- • R$' MC-2 COM-1.7 WS-100 COL-4.1 D E 20/12 - - 11/12 P 10 MC-3 15/12 7/12 11/12 _ D MC-18 5/12 N • LL '8 -4200.91 420 10- p -NV 44 LL-31 - • -L-NV T PI-NP PI-12• IL-NV - H N PI-NP _ 15/12 1 F 12/12 18/12 14/12 13/12N E 15 DO-107 10/12 - E T / COM-0.1 / 15- E / ' Pt1-7.85 / - E. / / R-1,715 / T / WS-300 / • - • 1a,2 cLaooaz ' _ 20 / 00-104 ' 16/12 `� 28/12 18(12 20/12 18/12 - / MC-22 : / COM-0.1 / 20- - / / / 22/12 28/12 / - • 25 1 DD-115 / 17/12 - MC-10 SW-1.3 COM-0.4 - 10 - 8/12 - - 30 30 - • 4: a. ; _ "tzy 35 - 35 SEE FIGURE 4 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS EXPLORATORY BORING LOGS TEST TEST TEST TEST BORING BORING BORING BORING NO.7 NO.8 NO.9 NO.10 ELEV.4817 ELEV.4819 ELEV.4819 ELEV.4823 • 0 0- 1 4/12 15/12 15/12 18/12 - 5 MC-2 N200.11 5- LL-M/ - PI-NP I D • E 18/12 17/12 14/12 14/12 - E P 10 T • f0- P H • T • H N N F 24/12 22/12 - 18/12 24/12 - 15 F C'.E 15= E • kIT • - E T 18/12 20/12 18/12 21/12 • 13O•113MG22 •• MC-18 - ;280.94 20- / SW-0.0 11-33 - / P1-2 / 24/12 • 20/12 - 25 / 0O.9625- 0,1 / MC-19 / 0 COM .8 - •12/12 - 0 NR 14/12 - • 30 - 35 35- 40- • SEE FIGURE 4 FOR LEGEND AND NOTES TO EXPLORATORY BORINGS EXPLORATORY BORING LOGS FIGURE 3 PPnI.IFCT kin clan 2 1.0 Ili 4 ± y o z a p c Q. aamazz <emz i ci ~ Li N N N N N N N pl N fq fA tq 3 N z 60- 66i y 6 6 6 6 c6 6 6 6 ? 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Wassenaar Geotechnieal end Emkonmental Conant, le 5 • 3 COMPRESSION UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING g tp � F 0 0 0 1 co oz c4 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY LOCATION TEST BORING NO.2 @ DEPTH OF 14' DRY UT Wf. 120 PCF 5 MOISTURE CONTENT 20 % 4 3 ' COMPRESSION UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING F 0 k WATER ADDED 5 100 1,000 APPLIED PRESSURE-PSF 10,000 SAMPLE DESCRIPTION CLAYSTONE SILTY 100,000 LOCATION TEST BORING NO.2 DEPTH OF 24' DRY UNIT WT. 115 PCF MOISTURE CONTENT 10 % SWELL- CONSOLIDATION TEST RESULTS .. FIGURES . A.G. Wassenaar GeotachnIcal w Eo in:ox ,W Camuan C, s • I 3 COMPRESSION UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING d g1 X O 0 0 7 1 N Z 8 2 WATER ADDED 3 4 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION SAM).CLAYEY DRY UNIT WT. 103 PCF •LOCATION TEST BORING NO.3 @ DEPTH OF 4' MOISTURE CONTENT 7 % 4 3 2 / COLLAPSE UNDER CONSTANT 1 ! PRESSURE BECAUSE OF WETTING i p pX 1 A c 29 1/ 2 8 3 WATER ADDED 4 5 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100 • ,000 SAMPLE DESCRIPTION SAND,CLAYEY DRY UNIT WT. 101 PCF LOCATION TEST BORING NO.5 @ DEPTH OF 4' MOISTURE CONTENT 2 % SWELL- CONSOLIDATION TEST RESULTS FIQI IRF 7 __ A.G. Wassenaar Geotech ical and Environmental Consultants >C• 5 I ' 4 3 NO CHANGE UNDER CONSTANT 2 PRESSURE BECAUSE OF WETTING sozzO 0 O 2 WATER ADDED 3 4 ioo 1,000 APPLIED PRESSURE-PSF 10.000 100,000 SAMPLE DESCRIPTION CLAY.SILTY DRY UNIT WT. 113 POE LOCATION TEST BORING NO.7 @ DEPTH OF 19' MOISTURE CONTENT 16 % 5 4 3 I COMPRESSION UDDER CONSTANT 2 PRESSURE BECAUSE OF WETTING • F 0 0 1 U 2 WATER ADDED 3 4 - 5 100 1,000 APPLIED PRESSURE-PSF 10,000 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. . 96 PCF LOCATION TEST BORING NO.10 @ DEPTH OF 24' MOISTURE CONTENT 19 % SWELL - CONSOLIDATION TEST RESULTS FIGURES PROJECT NO. 9ia'L7 A.G. Wassenaar Geotechnical and Environmental Consultants e• • 4 3 I SWELL UNDER CONSTANT PRESSURE BECAUSE OF WETTING 2 - • 1 O 0 a • 2 .:" WATER ADDED • 3 4 5 100 1,000 APPIJED PRESSURE-PSF 10,000 - 100,000 SAMPLE DESCRIPTION CLAY,SANDY DRY UNIT WT. 108 PCF • LOCATION TEST BORING NO.12 @ DEPTH OF 24' MOISTURE CONTENT 20 % 1.. SWELL- CONSOLIDATION TEST RESULTS FU FIGURF9 .....-.___-._ _ ___ I A.G. Wassenaar • • GB91.CI NC91 arxi EmronmentaI cw X19 f, • IIIP HYDROMETER ANALYSIS i SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NoN-PLAs(r) SAND . GRAVEL FINE MEDIUM COARSE FINE COBBLES .001 .002 .006 .009 .019 .037 MAMMA OF PANICLE IN MI COAIISE 100 .1N 2fff ........ al. ��— ��.19 228 l78 9.52 19.1 38.1 79Z 127. 200 •_��_ �� inamma �� MMENIM�� . 10 90 a- 9p W W �.��IL .... ..�e_�•=a= _ems._ II U 80 ___-�...�� .....� ��' �.� � W Mr 4114. athr 90.1119 m91 4019n 1T91 0200 COO 190 ��••�•�� ME REALMS 110 f10M M Mr 9/r 1-1/2' 7L' 100 srr 1A8.87ANILAIb SERIES LOCATION TEST BORING NO.2 CLEAR BWAAECIDRpCy SAMPLE DESCRIPTION 1ION SAND SLIGH LY SILTY OF S GRAVEL O % LIQUID LIMIT NV AASHT'O AS(� SRS_% PLASTICITY INDEX NP • • • • HYDROMETER ANALYSIS CLAY(PLASTIC)TO SLT @ION.pLAg7� SIEVE ANALYSIS SAND GRAVEL • NI/E Mal COARSE FINE COBBLES 1roa ...m...... ............ ......---- �s� �4• Mat� 'OF � 'S90 1.19 2.35 4.7e 9.62 WI 752 127 200...._ _ _ 0 Imimimpw ee �� 111MM.M I. .............= .,.........=........==.--.= �� ID M. ✓▪ainennwo MO Maimenen. MN 23 b 4minMinn IS Min am9i 1mn �� #4 W q I.t12 M. •200 1100 ISO Ig99p I19 lt0i 'ma� Y 7MEL1EA091G89/9' n. r 100 U.S.STANDAMD SE RTES . TIO TEST LIORING N0.3 DEPTH OF V CLEAR SQUARE OPENINGS _ DESCRIPTION CLAY SLIGHTLY SANDY CL GRAVEL O % LIQUID LIMIT IFICATION31 AASHTO A$ 11 S LT&CLAY g1-% PLASTICITY INDEX 12' 4. GRADATION TEST RESULTS FIGURE 111 A.G. Wassenaar Oeoleical and MrOnn m6e1 COtwMeMs C. • HYDROMETER ANALYSIS SIEVE ANALYSIS I CLAY(PLASTIC)TO SILT(NON-PLASTIC) SAND GRAVEL FINE I MEDIUM 'COARSE.' FINE I Caws (CI:eetFS ERS .001 .002 A03 _.m9 .019 .037 .074 .14a .1171 5icLE 00 1MILU.19 2.38 4.75 9.2 19.1 319.1 762 127 200 100 60 , 0 SO - 10 a - 20 20 70 — _ z - _ m 2 Z wa o' so - _ t50 FC a a a CC no. 20 80 - 10 90 0 7 41907, ?16,, sown 19min Omit 1min 4= 9100 !6D1640930 F10 910 OS #4 37r 1974 I-Vr r re rim T9E RPOD9013 I U.B.STARS SHIER CLEAR=ME OPBINLIB LOCATION TEST BORING NO.B @ DEPTH OF 9 GRAVEL 0 % LIQUID LIMB NV SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY(SM) SAND 93 % PLASTICITY INDEX NP • CLASS87CATION AASHTO A3(0) SILT&CLAY 7 % `.: HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)mar(NOMP ASTIC) 8AT0 lMU1VEL FINE I MEn9A1 IC0ARSE FINE I COARSE MMUS .00t .002 .006 .000 .019 .037 07 O 590 UNUSUAL-MRS 119 2_36 4.76 9A2 151 351 792 127 200 Im 0 90 10 p 20 >0 so Irirai 50 IZ to - - - 60 I ; - - 70 00 10 - - 90 02I� F - 4SemY, t6 mII 00 min 191m, 4min 1min 1200 0100 IS 9030 91e COOS 04 31r s74• 1-17r r errr1m { nMERFAo9xS ( us.STANDARD S ES I C.EAe SQUARE OPENINGS • TION TEST BORING NO.8 @ DEPTH OF 4' GRAVEL 0 % LIQUID LIMB NV - DESCRIPTION SAND.SUGHTLY SILTY(SM) SAND 89 % PLASTICITY INDEX NP CATION AASHTO A-1b(0) SILT&CLAY 11 % GRADATION TEST RESULTS FIGURE 11 PR(LFfT Nn 01n'n A.G. Wassenaar GeotecMlal and Entaile1B01 Consultants C • HYDROMETER ANALYSIS SIEVE ANALYSIS CLAY(PLASTIC)TO SILT(NON-PLASTIC) SAND GRAVEL FINE I MEDIUM ICI FINE I COARSE ICoeeLE3 X IN MIUSIE1131:3 10.001 .000 A05 .0 .010 .037 .07 27 E.5600 1.19 2.3 4.76 8.52 10.1 36.1 762 127 200 0 90 e0 10 20 O 70 z IT) so 20 °w a 40 w mLC 0 40 k w CC 70 0. 20 10 60 12 eo ES II 17h1 e0 min 19 mmin4mkt 1mY1 #2120 8100 #60#40/00 X 3.47r 16 #1094 �4 We 1.1/7 r re io0 M TME READINGS I U.B.STANDARD SERE I #EAR=MAE°POUNCE LOCATION TEST BORING NO.8 0 DEPTH OF 19' GRAVEL 0 % SAMPLE DESCRIPTION SILT,SLIGHTLY SANDY(ML) PLASTICITY LIMIT 33 CLASSIFICATION AASHTO A-4(9) SAND&CLAY 94 % PLAST1CfTy INDIX 2 l HYDROMETER ANALYSIS -SIEVE ANALYSIS CLAY(PLASTIC)TO 9L7(NON-PLASTIC) SAND GRAVEL PINE I MEDAN 'COARSE' 781E I COARse I COBBLES i .001 .002 .006 .009 .019 .007 074 OF ARnc1EwMLu;TPAB 476 92010.1 3a/ 76.2 127 200 I ----- 0 r. 00 612 10 6 70 g 60 O ::' e0 Z ZZ 40 8 w eo So lFit 40 s e0 g 20 20 1 so 0 TiTi,7 Bo 16 grin 60nsn iB min 4min inin #200 #100 #60#40820 re iron 414 yr 3(r I-1/7 r rr C100 42S4, 7114E READINGS U.S.STANDARD SERIES , LOCATION TEST BORING CLEAR SQUARE OPENINGS NO.13 Q DEPTH OF 4' GRAVEL IJOUID SAMPLE DESCRIPTION SAND,SLIGHTLY SILTY(SM) SAND 92 % LAST 9 % PLAST LIMB NV CLASSIFICATION AASHTO A3(0) LIMIT INDEX NP SILT&CLAY 8 % GRADATION TEST RESULTS FIGURE 12 -,__,___-_- to ! / - ° k } , . • RI ) k) a m _ \ - {fco I- .5 g cc 2- — ` © v) ! 2 | ~ ° k to co no } e ; » § \`� cv En ' > . - Q. k � \ § [ 8 | CL • . ! . f a- \ > > Z@ } k k ) n . � k• 6 \ \ k - , 22\ ° = a . \ , w e % aka = ■ < a § 7E0 § § ( co \ . a © # ! \ - - II. \ c . • co \\ \ + i i i ° i + 2 k a § E { } co ` 113 2 / R ; ® R e w $ � .� a ( CV v , : o / t.i#. ) f . . m ) . $ ! 0 - - IID t ® » .. » B { f \ i \ # k 2 f a` f § f # a ! / \ k / k C = § \ V 0 / \ \ } C } / k ° to C p , 3 > ° a J C ° _ * e w e s e3 ° CO CO ) k CO / _ / 2 • / \ { e a w / & - , , _ e - e m - a f . 2 . . . . ■ t ! 2 ] 2 r « m » \ 2 Q Zr» A•G• Wassenaar 2180 South Ivanhoe Street, Suite 5 Denver, Colorado 80222-5710 • Geotechnical and Environmental Consultants /7 3n3-759-8100 Fax 303-766-2920 l✓• www.agwassenaar.comccom APPENDIX SPECIFICATIONS FOR PLACEMENT OF STRUCTURAL FILL GENERAL The Geotechnical Engineer, as the Owner's representative, shall observe fill placement and conduct tests to determine if the material,method of placement,and compaction are in reasonable compliance with the specifications. Specifications presented in this Appendix are general in nature. They should be used except where specifically superceded by those presented in the attendant Geotechnical Study. For the purpose of this specification, structural areas include those areas that will support constructed appurtenances (e.g., •foundations, slabs, flatwork, pavements, etc.) and fill embankments or slopes that support significant fills or constructed appurtenances. Structural areas will be as defined by the Geotechnical Engineer. FILL MATERIAL Fill material shall consist of on or off-site soils which are relatively free of vegetable matter and rubble. Off-site materials shall be evaluated by the Soil Engineer prior to importation. No organic, frozen, perishable, or other unsuitable material shall be placed in the fill. For the purpose of this specification,cohesive soil shall be defined as a mixture of clay,sand,and silt with more than 35% passing a U. S. Standard#200 sieve and a Plasticity Index of at least 11. These materials will classify as an A-6 or A-7 by the AASHTO Classification system. Granular soils shall be all materials which do not classify as cohesive. Vegetation,organic topsoil,any existing fill and any other deleterious materials shall be removed from the fill area. The area to be filled shall then be scarified, moistened if necessary, and compacted in the manner specified below prior to placement of subsequent layers of fill. PLACEMENT OF FILL MATERIAL The materials shall be delivered to the fill in a manner which will permit a well and, uniformly compacted fill. Before compacting, the fill material shall be properly mixed and spread in approximately horizontal layers not greater than 8 inches in loose thickness. MOISTURE CONTROL I While being compacted,the material shall contain uniformly distributed moisture for compaction. The Contractor shall be required to add moisture to the materials if, in the opinion of the Geotechnical Engineer,proper and uniform moisture is not being obtained for compaction. If the fill materials are too wet for proper compaction,aerating and/or mixing with drier materials may be required. Preliminary Geotechnical Study for Site Development ro�- Project Number 91833 Gateway American Properties,LLC A.G Wassenaar,Inc. Wastewater Treatment Plant,Pioneer Development November 13,2006 • APPENDIX SPECIFICATIONS FOR PLACEMENT OF STRUCTURAL FILL Page 2 Moisture content shall be controlled as a percentage deviation from optimum. Optimum moisture content is defined as the moisture content corresponding to the maximum density of a laboratory compacted sample performed according to ASTM D698 for cohesive soils or ASTM D1557 for granular soils. The moisture content specifications for the various areas are as follows: Cohesive Soils Granular Soils 1. Beneath Structural Areas: -1 to +3% -2 to +2% 2. Beneath Non-Structural Areas: -3 to+3% -3 to+3% COMPACTION When the moisture content and conditions of each layer spread are satisfactory, it shall then be compacted by an approved method. Moisture-density tests shall be performed on typical fill materials to determine the maximum density. Field density tests must then be made to determine . the adequacy of the fill compaction. The compaction standard to be utilized in determining the maximum density is ASTM D 698 for cohesive soils or ASTM D 1557 for granular soils. The following compaction specifications should be followed for each area: 1. Beneath Structural Areas: 95% of Maximum Dry Density 2. Beneath Non-Structural Areas: 90%of Maximum Dry Density , Note: In areas where fill depths exceed 20 feet,additional compaction considerations will be required to reduce fill settlement. We recommend any fill placed within 20 feet of final subgrade elevation be compacted as required above, and that deeper fills be compacted to 100% of maximum dry density at a moisture content of±2 percent of optimum moisture content. If the structural fill contains less than 10 percent passing the No. 200 sieve, it may be necessary I to control compaction based on relative density (ASTM D 2049). If this is the case, then compaction around the structures and beneath slabs shall be to at least 70%relative density,and compaction beneath foundations and pavements shall be to at least 80% relative density. • Preliminary Geotechnical Study for Site Development Gateway American Properties,Project Number 91833opment A.G.Wassenaar,Inc. Wastewater Treatment Plant,Pioneer Development • DRAFT McGEADY SISNEROS, P.C. 3/5/07 MEMORANDUM To: Resource Colorado Water and Sanitation Metropolitan District Board of Directors Pioneer Regional Metropolitan District Board of Directors Pioneer Metropolitan District Nos. 1 —6 Boards of Directors From: McGeady Sisneros Date: March 5, 2007 Be: Resource Colorado Water and Sanitation Metropolitan District, Pioneer Regional Metropolitan District, and Pioneer Metropolitan District Nos. 1 —6 Wastewater Service Agreements Proposed Term Sheet Resource Colorado Water and Sanitation Metropolitan District(defined below) will be the regional provider of wastewater collection and treatment services for the Pioneer Community. The Pioneer Regional District(defined below)is anticipated to be the point of • contact with end-users within the Pioneer Community for local service, payment of tap fees and billing of wastewater service. The wastewater system to serve the Pioneer Community will have three tiers. The first tier consists of a localized wastewater collection system for households within each of the Pioneer District Nos. 1 —6 (defined below). This localized collection system will connect to a Pioneer regional wastewater collection system central to the entire Pioneer Community. These first two tiers will be owned, operated and maintained by Pioneer Regional District. Finally, the Pioneer Community system will connect to the Resource District's interceptor sewer system that will transport wastewater for treatment at the Resource District's wastewater treatment plant. One or more intergovernmental agreements will provide for the comprehensive funding, construction, operation and maintenance of the Resource District Wastewater System and the Pioneer Sewer System. • [00091984.DOC v:3) 1 • 1. Definitions of Entities Providing and Receiving_Services. (a) Pioneer Community. The Pioneer Community development located in Weld County, Colorado that is within the service areas of the Pioneer Regional District and Pioneer District Nos. 1 —6. (b) Pioneer District Nos. I —6. Pioneer Metropolitan District Nos. 1 —6, each a quasi municipal corporation and political subdivision of the State of Colorado. (c) Pioneer Regional District. The Pioneer Regional Metropolitan District, a quasi-municipal corporation and political subdivision of the State of Colorado acting by and through its Pioneer Regional Metropolitan District Water District Activity Enterprise that is authorized pursuant to its service plan to and will provide wastewater services to the Pioneer Community. (d) Resource District. The Resource Colorado Water and Sanitation Metropolitan District, a quasi municipal corporation and political subdivision of the State of Colorado acting by and through its Resource Colorado Water and Sanitation Metropolitan District Wastewater Activity Enterprise, that is authorized pursuant to its service plan and Rules and Regulations to provide wholesale wastewater collection and treatment service to Service Providers, including Pioneer Regional District. (e) Service Providers. Municipal or quasi-municipal entities in Weld and • Adams Counties, such as Pioneer Regional District, that provide for the collection and transportation of wastewater generated by individual users to Resource District for treatment and discharge. . 2. Definitions Relating to the Wastewater System. (a) Extensions. (i) Local Extensions. Wastewater interceptor sewers or wastewater or sewer service lines that are less than 12" in diameter and are specific to, in terms of both location and sizing, each of the Pioneer District Nos. 1 —6. (ii) Regional Extensions. Wastewater interceptor sewers or wastewater or sewer service lines that are less than 24" in diameter located throughout the Pioneer Community to collect wastewater from one or more connection points with Local Extensions for transportation to one or more connection points to Resource Extensions. (iii) Resource Extensions. Wastewater interceptor sewers, sewer or wastewater main lines or wastewater service lines that are 24" in diameter or greater that are required in order for the Resource District to provide wastewater services to the Pioneer Regional District to one or more connection points with Regional Extensions. (b) Pioneer Local Collection System. All structures, facilities, Local Extensions, and equipment owned and used by the Pioneer Regional District for collecting, • (00091984.DOC v:3) 2 • pumping and transporting wastewater, specific to one or more of the Pioneer District Nos. 1 —6, to one or more wastewater service connection points of the Pioneer Sewer System. (c) Pioneer Sewer System. All structures, facilities, Regional Extensions, and equipment owned and used by the Pioneer Regional District for collecting, pumping and transporting wastewater within the Pioneer Regional District service area to one or more wastewater connection points of the Resource District Wastewater System. (d) Resource District Wastewater System. All components of the Resource District's wastewater collection system and Wastewater Treatment Plant, including but not by way of limitation (i) all structures, facilities, Resource Extensions, and equipment, owned and used by the Resource District for collecting, pumping and transporting wastewater from one or more wastewater connection points of the Pioneer Sewer System to the Resource District Wastewater System; and (ii) all structures, facilities and equipment for treating wastewater prior to discharge or disposal, including the Waste Water Treatment Plant. (e) Wastewater Treatment Plant. The wastewater treatment plant proposed to be owned and operated by Resource District to initially serve the Pioneer Community that may be expanded to serve other Service Providers within Resource District's service area. 3. Definitions Relating to Fees and Charges. Tap fees will be charged by Resource District and Pioneer Regional District for all capital • costs associated with providing the necessary wastewater facilities to serve the Pioneer Community. Individual users of the system will pay service charges to Resource District and Pioneer Regional District for the operation of the systems, including the Local Collection Systems. (a) Pioneer Regional District Tap Fees. All fees and charges levied by Pioneer Regional District, including all system development,capital, or plant investment fees necessary to provide funding for the costs associated with the construction, reconstruction, repair,replacement or enlargement of the Pioneer Sewer System and Local Collection Systems. The tap fee will also include a component to recover all capital costs and expenses associated with the Resource District Wastewater System necessary to serve the Pioneer Community, and fees and charges levied for connection to the Resource District Wastewater System. (b) Pioneer Regional District Service Charges. All fees and charges levied by Pioneer Regional District for the provision of service from the Pioneer Sewer System, including fees and charges necessary to operate and maintain the Pioneer Sewer System and Pioneer Local Collection Systems and a component to recover all service charges levied by the Resource District for regional service from the Resource District Wastewater System. (c) Resource District System Development Charges. All system development, capital, or plant investment fees necessary to provide funding for the costs associated with the construction, reconstruction, repair, replacement or enlargement of the Resource District Wastewater System levied by Resource District, as set forth in and defined in • Sections 2.2.3 (a) and (b) of the Resource District Rules and Regulations. (00091984.DOC v:3) 3 • (d) Resource District Connection Fees. All fees and charges levied by Resource District for connection to the Resource District Wastewater System, as defined in Section 2.2.3 (a) and (c) of the Resource District Rules and Regulations. (e) Resource District Service Charges. All fees and charges levied by Resource District for service from the Resource District Wastewater System, as defined in Section 2.2.3 (a) and (d)of the Resource District Rules and Regulations. Service charges will include those fees and charges necessary to operate and maintain the Resource District Wastewater System. 4. Resource District- Pioneer Regional District Intergovernmental Agreements. (a) Capital Construction, Operation and Maintenance. (i) Resource District will be responsible for construction, construction administration,reconstruction, repair,replacement or enlargement of the Resource District Wastewater System. Resource District will own, operate and maintain the Resource District Wastewater System. (ii) Pioneer Regional District will be responsible for construction, construction administration, reconstruction,repair, replacement or enlargement of the Pioneer Sewer System. The Pioneer Regional District will own, operate and maintain the Pioneer Sewer System. Pioneer Regional District will pay for the cost of operation and maintenance of the • Resource Extensions even though those extensions will be owned by Resource District and operated and maintained by Resource District. (b) Service. (i) Pioneer Regional District will enter into a connector agreement with Resource District whereby Pioneer Regional District is legally bound to accept and to pay for wastewater service by the Resource District. (ii) Pioneer Regional District will provide direct service to individual users within the boundaries of Pioneer District Nos. 1 —6. (c) Funding. (i) Resource District will administer the levy and collection of the Resource District System Development Charges, the Resource District Connection Fees, and the Resource District Service Charges. (ii) Pioneer Regional District will administer the levy and collection of the Pioneer Regional District Tap Fees. In order for Pioneer Regional District to recover a portion of the capital fees and charges of the Resource District, Pioneer Regional District will agree to include within its Pioneer Regional District Tap Fees, a component to cover the Resource District System Development Charges and Resource District Connection Fees. • (00091984.DOC v:3) 4 • (iii) Pioneer Regional District will administer the levy and collection of the Pioneer Regional District Service Charges for service to individual users within Pioneer District Nos. 1 —6 and for the costs associated with the operation and maintenance of the Pioneer Sewer System and the Pioneer Local Collection Systems. The Pioneer Regional District will include a component of the Resource District Service Charges for the operation and maintenance of the Resource District Wastewater System in its Pioneer Regional District Service Charge. 5. Pioneer Regional District Relationship to Pioneer District Nos. 1 —6. Generally, the responsibility for the construction of the Pioneer Local Collection Systems will be borne by each Pioneer District Nos. 1 —6. These systems will be transferred or dedicated to the Pioneer Regional District for operation and maintenance. Pioneer Regional District will agree to provide the necessary wastewater collection and transport services to individual users within the Pioneer District Nos. 1 —6 serving the Pioneer Community. (a) Capital Construction, Operation and Maintenance. (i) Construction of each of the Pioneer Local Collection Systems and the funding necessary therefore will be provided by Pioneer District Nos. 1 —6. Pioneer Local Collection Systems will be constructed in accordance with standards adopted by Pioneer Regional District compatible with the Resource District Rules and Regulations. (ii) Pioneer District Nos. 1 —6 will transfer or dedicate the Pioneer • Local Collection Systems to Pioneer Regional District. Pioneer Regional District will own and be responsible for operation and maintenance of the Pioneer Sewer System and each Pioneer Local Collection System. (b) Service. Pioneer Regional District will provide wastewater collection services to individual users within the boundaries of Pioneer District Nos. 1 —6. (i) Pioneer District Nos. 1 —6 will acknowledge that the districts are prohibited from entering into service agreements with Resource District directly. (ii) Pioneer Regional District will provide wastewater collection services to service users in accordance with the Rules and Regulations of the Resource District and will adopt rules and regulations for the provision of wastewater services to individual customers within Pioneer District Nos. 1 —6 that are consistent with the Resource District Rules and Regulations. (c) Funding. (i) Pioneer Local Collection System Capital Costs. Each of the Pioneer District Nos. 1 —6 will be responsible for funding the costs and expenses associated with the construction of its Pioneer Local Collection System. (ii) Resource District Wastewater System and Pioneer Sewer System Capital Costs. Funding for the construction of the Resource District Wastewater System and • Pioneer Sewer System will be financed with revenue from the Pioneer Regional District Tap Fees paid by individual users within Pioneer District Nos. 1 —6. (00091984.DOC v:31 5 • (iii) Resource District Wastewater System Operation and Maintenance Costs. Individual service users within Pioneer District Nos. 1 —6 will pay a Resource District Service Charge that includes a component for the operation and maintenance of the Resource District Wastewater System. (iv) Pioneer Sewer System and Pioneer Local Collection System(s) Operation and Maintenance Costs. Individual service users within Pioneer District Nos. 1 —6 will pay a Pioneer Regional District Service Charge for the operation and maintenance of the Pioneer Sewer System and each Pioneer Local Collection System. 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