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Home My WebLink About20195202.tiff..e.City of Ay• Thornton Infrastructure Maintenance Center 12450 Washington Street Thornton, CO 80241-2405 www.thorntonwaterproiect.com December 21, 2018 Ms. Diana Aungst Weld County Department of Planning Services 1555 N. 17th Ave. Greeley, CO 80631 Infrastructure Department Thornton Water Project 720-977-6700 Fax 720-977-6202 RE: Weld County Use by Special Review Permit for PIPELINE - DOMESTIC WATER Application for the Thornton Water Project Weld County Permit Application Segment 1 Dear Ms. Aungst: The city of Thornton (Thornton) is requesting a Use by Special Review (USR) Permit for PIPELINE — DOMESTIC WATER as authorized by Weld County Code (WCC), Chapter 23, Article II, Division 6 Use by Special Review Permits for PIPELINE — DOMESTIC WATER. This USR Permit for PIPELINE - DOMESTIC WATER application (Application) requests approval of a project to construct, operate, and maintain a portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in unincorporated Weld County. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. The TWP PA -1 appurtenances include buried valve assemblies, access manways, and fiber optic conduit. The TWP is a water delivery system that will convey domestic water purchased by Thornton in the mid -1980's from the Water Supply and Storage Company system to Thornton. In addition to meeting water demand, in adding this high quality source the TWP provides diversity, enhanced water supply reliability, quality and drought resiliency to Thornton's supply. The Application addresses areas in unincorporated Weld County, which include private or public lands within the boundaries of Weld County and outside the boundaries of any municipality (city or town). The Application is generally organized to addresses items required for submission by the WCC Chapter 23, Division 6. Section 23-2-510 Application Requirements (WCC Section 23-2-510), the standards described in WCC Chapter 23, Division 6, Sections 23-2-480 and 23-2-490 (WCC Section 23-2-480 and WCC Section 23-2-490), and the items required for submission by the Weld County USR Procedural Guide Checklist, Application Requirements (Procedural Guide) provided by Weld County and discussed at the pre -application meetings held on May 27, 2016 and August 25, 2016. Figure C.2.i.1 Zoning within TWP PA -1 C-39 Figure C.2.i.2 Town and GMA Boundaries within TWP PA -1 Route C-41 Figure C.2.i.3 Soils C-58 Figure C.2.I Possible Haul Routes C-62 Figure C.2.c-1 Floodplains C.2.C-1-2 Figure C.2.c-3.1 Drainage and Erosion Control 11-2 Figure C.2.c-3.2 Soil Erodibility 11-11 Figure C.2.c-4 Geologic Hazards C.2.C-4-2 Figure C.2.c-5 South Platte River Basin and Associated Alluvial Aquifers C.2.C-5-2 Figure C.2.c-7.1 TWP PA -1 Route 12-2 Figure C.2.c-7.2 Possible TWP PA -1 Access Locations 12-9 Figure C.2.c-7.3 Possible Haul Routes 12-11 Figure C.2.c-7.4 Preferred Route in Weld County Future and Current ROW 12-13 Figure C.2.c-7.5 TWP PA -1 Proposed Location 1 in Weld County ROW 12-18 Figure C.2.c-7.6 TWP PA -1 Proposed Location 2 in Weld County ROW 12-19 Figure C.2.c-7.7 TWP PA -1 Proposed Location 3 in Weld County ROW 12-20 Figure C.2.c-7.8 Sample Road Closure Types 12-22 Figure 4.1 Example Buried Appurtenances 4-2 Figure 4.2 Zoning within TWP PA -1 4-4 Figure 4.3 Town and GMA Boundaries within TWP PA -1 Route 4-6 Figure 4.4 Possible Haul Routes 4-15 Figure 4.5 Possible TWP PA -1 Access Locations 4-18 Figure 4.6 Drainage and Erosion Control 4-20 Figure 4.7 Potential Staging Locations 4-22 Figure 7.1 Adjacent Property Owner Notification Area 7-12 Figure 7.2 Adjacent Property Owner Notification Area 7-13 Figure 7.3 Adjacent Property Owner Notification Area 7-14 Figure 7.4 Adjacent Property Owner Notification Area 7-15 Figure 7.5 Adjacent Property Owner Notification Area 7-16 Figure 7.6 Adjacent Property Owner Notification Area 7-17 Figure 7.7 Adjacent Property Owner Notification Area 7-18 Figure 7.8 Adjacent Property Owner Notification Area 7-19 Figure 7.9 Adjacent Property Owner Notification Area 7-20 Figure 7.10 Adjacent Property Owner Notification Area 7-21 Figure 7.11 Adjacent Property Owner Notification Area 7-22 Figure 7.12 Adjacent Property Owner Notification Area 7-23 Volume 1 Tables Table C.2.a TWP PA -1 Land Acquisition Status as of December 19, 2018 C-4 Table C.2.b Concept Evaluation Implementation Considerations C-19 Table C.2.c Impacted Existing Condition Reference to Mitigation Measures Location in Application C-22 Table C.2.d Probable Water Pipeline Construction Method at Defined Existing Features C-29 Table. C.2.h TWP PA -1 Irrigation Ditch Crossings C-37 Table C.2.I Possible Delivery and Commuting Routes C-61 Table C.2.c-3.1 Example Structural Control Measures 11-4 Table C.2.c-3.2 Example Stabilization Control Measures 11-6 Table C.2.c-3.3 Example Materials Handling Control Measures for Construction Sites 11-7 Table C.2.c-3.4 Example BMP Maintenance Guidelines 11-8 Table C.2.c-3.5 Example Groundwater BMPs 11-9 Table C.2.c-3.6 Example Other Areas or Procedures BMPs 11-10 Table C.2.c-7.1 Roadway Classifications and AADT 12-3 Table C.2.c-7.2 Anticipated Construction Vehicles 12-6 Table C.2.c-7.3 Possible Delivery and Commuting Routes 12-8 Table C.2.c-7.4 Structurally Deficient or Functionally Obsolete Bridges Near TWP PA -1 12-10 Table D.1 Impacted Existing Condition Reference to Mitigation Measures Location in Application D-5 Table D.2 Impacted Existing Condition Reference to Mitigation Measures Location in Application D-10 Table D.3 Concept Evaluation Implementation Considerations D-13 Table D.4 WCC Standards and Application Requirements Cross -Reference Guide D-20 Table 4.1 Possible Construction Delivery and Commuting Routes 4-14 Table 4.2 Possible Post -construction Delivery and Commuting Routes 4-16 Table 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route 7-3 Volume 1 Exhibits Exhibit C.2.b.la Parcel Number 146933200024 Property Owner Letter to Weld County C-10 Exhibit C.2.b.lb Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 1 C-11 Exhibit C.2.b.1c Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 2 C-11 Exhibit C.2.b.ld Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 3 C-12 Exhibit C.2.b.1e Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 4 C-12 Exhibit C.2.b.lf Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 5 C-13 Exhibit C.2.b.2 Location 3 Property Owner Letter to Weld County C-17 Exhibit C.2.c-7.1a Parcel Number 146933200024 Property Owner Letter to Weld County 12-14 Exhibit C.2.c-7.1b Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 1 12-15 Exhibit C.2.c-7.1c Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 2 12-15 Exhibit C.2.c-7.1d Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 3 12-16 Exhibit C.2.c-7.1e Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 4 12-16 Exhibit C.2.c-7.1f Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 5 12-17 Exhibit C.2.d-7.2 Location 3 Property Owner Letter to Weld County 12-21 Exhibit 10.1 Plattevile Signed Notice of Inquiry 10-2 Exhibit 10.2a Notice of Inquiry Email Request to Dacono 10-3 Exhibit 10.2b Notice of Inquiry Email Request Attachment to Dacono 10-4 Exhibit 10.3a Notice of Inquiry Email Request to Fort Lupton 10-5 Exhibit 10.3b Notice of Inquiry Email Request Attachment to Fort Lupton 10-6 Exhibit 10.4a Notice of Inquiry Email Request to Frederick 10-7 Exhibit 10.4b Notice of Inquiry Email Request Attachment to Frederick 10-8 Exhibit 10.5a Notice of Inquiry Email Request to Firestone 10-9 Exhibit 10.Sb Notice of Inquiry Email Request Attachment to Firestone 10-10 Exhibit 10.6a Notice of Inquiry Email Request to Platteville 10-11 Exhibit 10.6b Notice of Inquiry Email Request Attachment to Platteville 10-12 Exhibit 10.7a Notice of Inquiry Email Request to Mead 10-13 Exhibit 10.7b Notice of Inquiry Email Request Attachment to Mead 10-14 Exhibit 10.8 Notice of Inquiry Email Request Attachment for All Requests 10-15 Thornton Water Project — Weld County Permit Application 1 Acronyms and Abbreviations AADT ADA Application BGEPA BMP CBP CCR CDOA CDOT CDOW CDPHE CDPS CFR CNDIS CNHP Comprehensive Annual Average Daily Traffic Americans with Disabilities Act TWP PA -1 USR Permit Application Bald and Golden Eagle Protection Act Best Management Practice Colorado Butterfly Plant Code of Colorado Regulations Colorado Department of Agriculture Colorado Department of Transportation Colorado Division of Wildlife Colorado Department of Public Health and Environment Colorado Discharge Permit System Code of Federal Regulations Colorado Natural Diversity Information System/Source Colorado Natural Heritage Program Plan Weld County Code, Chapter 22, Comprehensive Plan Corps U.S. Army Corps of Engineers CPW Colorado Parks and Wildlife CR County Road DRCOG Denver Regional Council of Governments DWR Colorado Division of Water Resources ELCO East Larimer County Water District ERO Resources Corporation ESA Endangered Species Act FEMA Federal Emergency Management Agency FR Federal Register FRICO Farmers Reservoir and Irrigation Company GIS Geographic Information System GMA Growth Management Area HUC 1-25 IPM Jurisdictional Waters MBTA mgd MS4 Hydrologic Unit Code Interstate 25 Integrated Pest Management Waters of the United States Migratory Bird Treaty Act million gallons per day Municipal Separate Storm Sewer System TWP USR PA -1 ACRONYMS AND ABBREVIATIONS NCAR National Center for Atmospheric Research N HD National Hydrography Dataset Northern Water Northern Colorado Water Conservancy District N PDES National Pollutant Discharge Elimination System NRCS Natural Resources Conservation Service NWI National Wetland Inventory OAHP Office of Archeology and Historic Preservation OHWM Ordinary High Water Mark PA -1 Weld County Permit Application Segment 1 PDF Adobe Acrobat © Portable Document Format Poudre River Cache la Poudre River Preble's Preble's Meadow Jumping Mouse USR Procedural Guide Checklist Weld County Use by Special Review (USR) Procedural Guide Checklist, Application Requirements Project Thornton Water Project PSCo Public Service Company of Colorado ROW Right -of -Way RPW Relatively Permanent Waters RUA Regional Urbanization Area SDS Safety Data Sheet Service U.S. Fish and Wildlife Service SPWRAP South Platte Water Related Activities Program SWMP Stormwater Management Plan Thornton City of Thornton TNW Traditional Navigable Waters TWP Thornton Water Project U LTO Ute Ladies' -Tresses Orchid UPRR Union Pacific Railroad USACE U.S. Army Corps of Engineers USB Universal Serial Bus USDCM Urban Storm Drainage Criteria Manual USFS U.S. Forest Service USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey USR Use by Special Review WCC Weld County Code WOTUS Waters of the United States WSSC Water Supply and Storage Company TWP USR PA -1 ACRONYMS AND ABBREVIATIONS Thornton Water Project — Weld County Permit Application 1 Introduction The city of Thornton (Thornton), Colorado is requesting a Use by Special Review (USR) permit for the Thornton Water Project (TWP), Weld County Permit Application Segment 1 (PA -1), pursuant to Weld County Code (WCC), Chapter 23, Article II, Division 6 USR Permits for PIPELINE — DOMESTIC WATER. The TWP PA -1 involves a pipeline sixteen inches in diameter or larger and appurtenant components thereof (such as valves or pump stations) designed for transporting domestic water in such pipeline and extending to locations outside of Weld County. The TWP PA -1 USR permit application (Application) requests approval of a location to construct, operate, and maintain the TWP PA -1, which includes up to approximately 13.3 miles of a buried 48 -inch domestic water transmission pipeline (water pipeline) and associated appurtenances in unincorporated Weld County. TWP PA -1 appurtenances include buried valve assemblies, access manways, and fiber optic cable. The TWP is a water delivery system that will convey domestic water purchased by Thornton in the mid -1980's from the Water Supply and Storage Company system located in unincorporated Larimer County, through Weld County, and to Thornton. This Application addresses areas in unincorporated Weld County, which include private or public lands within the boundaries of Weld County that are outside the corporate boundaries of any municipality (city or town). This Application is generally organized to address items required for submission by the WCC Chapter 23, Division 6, Section 23-2-510 Application Requirements (WCC Section 23-2-510), the standards set forth in WCC Chapter 23, Division 6, Sections 23-2-480 and 490 (WCC Section 23-2-480 and WCC Section 23-2-490) and the items required for submission by the Weld County Use by Special Review (USR) Procedural Guide Checklist, Application Requirements (USR Procedural Guide Checklist). The siting and development of the TWP PA -1 conforms to Weld County USR permit requirements as described in this Application. Thornton has met multiple times with staff from the Weld County Planning and Public Works Departments regarding the TWP PA -1, the USR permit application process and permit requirements. The Pre -Application meetings held on May 27, 2016 and August 25, 2016 along with follow-up meetings provided Thornton with guidance and recommendations from Weld County staff to help ensure a complete permit application submittal. Thornton has continued to consult with the Weld County Planning and Public Works Departments throughout the development of this Application, including periodic telephone and e-mail communications. TWP USR PA -1 INTRODUCTION Thornton Water Project — Weld County Permit Application 1 Purpose and Need The purpose of the TWP is to convey domestic water from the WSSC system purchased by Thornton in the mid -1980's to enhance Thornton's water supply reliability and drought resiliency, help address source water quality issues, and meet municipal and industrial demands of Thornton's water customers through 2065. Thornton's population is projected to increase from its current estimated population of 138,901 residents (City of Thornton, Second Quarter 2018, Quarterly Housing & Population Report, July 31, 2018) to 242,000 residents by 2065. Thornton has proactively planned for the anticipated population increase to ensure that Thornton can provide a reliable, high quality, and economical water supply to meet the needs of its residents and businesses. Thornton's existing water system, including an extensive water conservation program, has served to meet municipal and industrial water needs of Thornton's current water customers in its service area, as well as to meet existing contractual obligations. Thornton water supply projects in development will allow Thornton to provide water service up to a population of 158,000 residents. Beyond 158,000 residents, which Thornton projects to reach by 2025, additional water supplies are needed to ensure reliable water service to Thornton's water customers. Water from the WSSC system in Northern Colorado purchased by Thornton in the mid -1980's from willing sellers has been decreed in Water Court for use in Thornton, but Thornton currently lacks the infrastructure to deliver that water to Thornton. The TWP will provide the necessary infrastructure for delivery of this water to Thornton, and provides the means by which Thornton's customers will receive the benefit of Thornton's decades -long planning for and investment in this additional water supply. The TWP is being configured to deliver an average of 14,000 acre-feet of water annually, which is sufficient to meet the municipal and industrial demands of Thornton's water customers through 2065. In addition to meeting water demand, in adding this high quality source the TWP provides diversity, enhanced water supply reliability, quality and drought resiliency to Thornton's supply. TWP USR PA -1 PURPOSE AND NEED Section 1 Pre -application Meeting Minutes This section addresses USR Procedural Guide Checklist, pre -application meeting minutes. See attached pre -application meeting minutes developed and provided by Weld County behind this page for meetings held on May 27, 2016 and August 25, 2016. TWP USR PA -1 SECTION 1 PRE -APPLICATION MINUTES 1-1 Technician MEMORANDUM TO: PRE16-0083; Case File, pre -application DATE: May 26, 2016 FROM: Kris Ranslem, Planning SUBJECT: Pre -Application Meeting prior to submitting USR for water transmission lines. Attendees: Mark Koleber, City of Thornton John Himyak, City of Thornton Lyndsay Massey, Public Works Jody Henry, CH2MHILL Gerald Simpson, CH2MHILL Antonio Esposito, CH2MHILL Diana Aungst, Planning Hayley Brown, Engineering Lyndsay Massey, Public Works Kris Ranslem, Planning Michelle Martin, Planning On Thursday, May 26, 2016 an informal discussion took place at the Greeley Administrative Offices Conference Room regarding a proposed water conveyance infrastructure. (The legal description are multiple Sections in T1 -8N, R67W of the 6'h P.M.) Background Information: The Thornton Water Project will convey Thornton's decreed raw water from the Water Supply and Storage Company system to Thornton. The project includes approximately 50 miles of buried pipeline and appurtenant facilities. The pipeline will traverse multiple properties in Weld County. The current intent is to obtain permanent easements for the buried pipeline from private property owners for construction in unincorporated Weld County. There would be 50 foot easements with an additional 40 feet easement for temporary construction. Total construction will take approximately 4-5 years. The applicants are proposing to submit the project as a corridor alignment (quarter mile) rather than specific alignments. Planning Department Staff urged the applicant to contact staff for any questions: Planner On Call available Monday through Friday 7:30 a.m. to 4:30 p.m. or contact Diana Aungst at 970-400- 3524 or daungst@weldgov.com Planning staff went over the proposed water pipeline code changes with the applicant and the USR criteria. The above notes are provided as a courtesy to the applicant. While we strive to help identify as many potential issues upfront during the pre application meeting we cannot anticipate every issue that may come up during the formal application process. The information contained herein has been placed on file with the Department of Planning Services. The pre -application is valid fora period of one (1) year from the date of pre - 1 -2 application. If a formal application is not received following the time period specified herein the Planning Department reserves the right to require a new pre -application meeting. Please note that all land use, building and impact fees are subject to change throughout this time period. End memorandum. 1-3 MEMORANDUM TO: PRE16-0083; Case File, pre -application DATE: August 25, 2016 FROM: Kris Ranslem, Planning Technician SUBJECT: Pre -Application Meeting prior to submitting USR for water transmission lines Attendees: Mark Koleber, City of Thornton John Himyak, City of Thornton Jody Henry, CH2MHILL Gerald Simpson, CH2MHILL Antonio Esposito, CH2MHILL Diana Aungst, Planning Hayley Brown, Engineering Kris Ranslem, Planning Michelle Martin, Planning On Thursday, August 25, 2016 an informal discussion took place at the Greeley Administrative Offices Conference Room regarding a proposed water conveyance infrastructure. (The legal description are multiple Sections in T1 -8N, R67W of the 6th P.M.) Background Information: The Thornton Water Project will convey Thornton's decreed raw water from the Water Supply and Storage Company system to Thornton. The project includes approximately 50 miles of buried pipeline and appurtenant facilities. The pipeline will traverse multiple properties in Weld County. The current intent is to obtain permanent easements for the buried pipeline from private property owners for construction in unincorporated Weld County. There would be 50 foot easements with an additional 40 feet easement for temporary construction. Total construction will take approximately 4-5 years and intend to deliver water by 2025. The applicants were proposing to submit the project as a corridor alignment (quarter mile) rather than specific alignments. After discussion with the Board of County Commissioners, they were directed to propose a specific alignment rather than a corridor alignment. Therefore, the applicants are proposing to break the project up into three segments. The 1st Phase would include the pipeline from Adams County to St. Vrain Creek. The 2nd Phase would include the pipeline up to just north of Johnstown and the 3rd Phase would be from north of Johnstown to where it turns west to go into Larimer County. Phase 1 would also include one booster pump station and a water tank is proposed to be included in Phase 3. Building Department Commercial Building Permits will be required, per Section 29-3-10 of the Weld County Code. Currently the following has been adopted by Weld County: 2012 International Codes; 2006 International Energy Code; 2014 National Electrical Code. A building permit application must be completed and two complete sets of engineered plans bearing the wet stamp of a Colorado registered architect or engineer must be submitted for review. A geotechnical engineering report or an open -hole inspection report performed by a registered State of Colorado engineer may be required for new structures and or additions. 1-4 A Fire District Notification letter may be required and shall be submitted with Commercial Permit applications. All building permit requirements can be found on the Weld County web -site: http://www.co.weld.co.us/Departments/BuildingDepartment/BuildingPerm its/Commercial.html. Health Department Staff was unavailable; however please contact Lauren Light at 970-304-6415 ext. 2211 for further direction. Waste handling: Waste materials shall be handled, stored, and disposed in a manner that controls blowing debris, and other potential nuisance conditions. The applicant shall operate in accordance with Chapter 14, Article 1 of the Weld County Code. Onsite dust: Fugitive dust should attempt to be confined on the property. Uses on the property should comply with the Colorado Air Quality Commission's air quality regulations. Sewage disposal information: Include in application how sewage disposal will be accommodated. If using a septic system provide a copy of the septic permit. Either utilize the County website http://www.co.weld.co.us/Departments/Assessor/PropertylnformationPortal.html or call (970-304-6415) or stop by EH front counter and request a copy. Potable water information: Include in application how potable water will be provided. Provide a will serve letter or water bill from the water district or provide a copy of well permit. Portable toilets and Bottled water can be used for employees and customers per policy below: TO DEFINE WHEN PORTABLE TOILETS AND COMMERCIALLY BOTTLED WATER ARE ALLOWED Purpose: To define when portable toilets and commercially bottled water are allowed. Policy: Bottled water from a commercial source is allowed in the following circumstances: 1. Temporary or seasonal uses that are utilized 6 months or less per year (for example recreational facilities, firework stands, farmers markets ) 2. Gravel mines 3. 10 or less customers or visitors per day And/or one of the following: 4. 2 or less full time (40 hour week) employees located on site 5. 4 or less part time (20 hour week) employees located on site 6. Employees or contractors that are on site for less than 2 consecutive hours a day Policy: portable toilets are allowed in the following circumstances: 1. Temporary or seasonal uses that are utilized 6 months or less per year (for example recreational facilities, firework stands, farmers markets ) 2. Gravel mines 3. 10 or less customers or visitors per day And/or one of the following: 4. 2 or less full time (40 hour week) employees located on site 5. 4 or less part time (20 hour week) employees located on site 6. Employees or contractors that are on site for less than 2 consecutive hours a day Public Works Staff was unavailable; however, please contact staff below for further direction: Access Permits: Morgan Gabbed mgabbert@co.weld.co.us 970-400-3778 Improvements Agreements: Evan Pinkham epinkham(a�co.weld.co.us 970-400-3727 Traffic Studies: Janet Lundquist .lundquistco.weld.co.us 970-400-3726 Right -of -Way: Tiffane Johnson tvjohnson(c�weldgov.co.us 970-400-3766 1-5 CR 2 is owned and maintained by the County of Adams. The municipality has jurisdiction over all accesses within their jurisdiction. Please contact municipality to verify the access permit or for any additional requirement that may be needed to obtain or upgrade the permit. A Site Plan will be required identifying the following (if applicable): o Show and label location of existing road Right -of -Way, future road Right -of -Way, and Easements o Show and label the unmaintained section line Right -of -Way o Show and label location of the access(es) and label with access permit number o Show and label the access turning radii (25 feet for passenger vehicles/60 feet for trucks) o Show and label the approved tracking control ENGINEERING DEPARTMENT DRAINAGE REQUIREMENTS: The pipeline itself will meet the pipeline exception. Pump stations, water tanks, and other facilities will not meet that exception. Weld County has recently adopted a new stormwater drainage code located under Chapter 23, Article 12 Storm Drainage Criteria. A list of professional engineering consultants is available if you need help finding an engineer to assist you with your project at the following link http://www.co.weld.co.us/Departments/PlanningZoninq/Engineerinq.html. Please contact the Department of Planning Services/Development Review Engineering for questions or assistance 970-353-6100. This area IS within an Urbanizing Drainage Area: Require detention of runoff from the 1 -hour, 100 -year, storm falling on the developed site and release of the detained water at the historic runoff rate of the 1 -hour, 5 -year storm falling on the undeveloped site for URBANIZING areas. This area IS within a Non -Urbanizing Drainage Area: Require detention of runoff from the 1 -hour, 100 -year, storm falling on the developed site and release of the detained water at the historic runoff rate of the 1 -hour, 10 -year storm falling on the undeveloped site for NON - URBANIZING areas. Detention pond summarized in a drainage report is required unless the project falls under an exception to stormwater detention requirements per code section 23-12-30 F.1. To avoid holding up case processing, a minimum of either a preliminary drainage report or a drainage narrative with exception as shown below must be submitted with 7 -day case submittal information. 1. Drainage narrative requirements with exception from detention pond. The drainage narrative must describe at the minimum: 1. Which exception is being applied for and include supporting documentation. 2. Where the water originates if it flows onto the property from an offsite source 3. Where it flows to as it leaves the property 4. The direction of flow across the property 5. If there have been previous drainage problems with the property DRAINAGE CODE REQUIREMENTS (informational only): Section 23-12-30. Drainage Policy. Exceptions. EXCEPTIONS TO STORMWATER DETENTION SHALL NOT JEOPARDIZE THE PUBLIC HEALTH, SAFETY, AND WELFARE OF PUBLIC AND PRIVATE PROPERTY AND SHALL BE LIMITED TO THE FOLLOWING: a. No stormwater detention will be required for sites that meet any of the following conditions. Requirements of the Municipal Separate Storm Sewer System (MS4) areas remain applicable 1) Use by Right or Accessory Use in the A (Agricultural) Zone District. 2) Zoning Permits in the A (Agricultural) Zone District. 3) A second dwelling permit in the A (Agricultural) Zone District. 1-6 4) Towers including, but not limited to, cell, wind, and telecommunication towers. 5) Pipelines or transmission lines. 6) Gravel pits if the stormwater drains into the gravel pit. 7) Residential developments where all the following conditions exist: A) Nine (9) lots or fewer. B) The average lot size is equal to, or greater than, three (3) acres per lot. C) Downstream roadway criteria are not exceeded. D) The total post -development imperviousness for the rural residential development does not exceed ten percent (10%), assuming that all internal roads and driveways are paved, or will eventually be paved. 8) Development of sites where the change of use does not increase the imperviousness of the site. 9) URBANIZING areas where the total project stormwater runoff of less than, or equal to, 5 cubic feet per second (cfs) for the 1 -hour, 100 -year, storm event. 10) NON -URBANIZING areas where the total project stormwater runoff of less than, or equal to, 10 cfs for the 1 -hour, 100 -year, storm event. 11) Parcels with total area less than, or equal to, a 1.0 gross acre. 12) Individual parcel with an unobstructed flow path and no other parcel(s) between the Federal Emergency Management Administration (FEMA) regulatory floodplain channel and the project. 13) A parcel greater than 1 gross acre and less than, or equal to, 5 gross acres in size is allowed a onetime exception for a new 1,000 sq ft building or equivalent imperviousness. 14) A parcel greater than 5 gross acres in size is allowed a onetime exception for a new 2,000 sq ft building or equivalent imperviousness. 15) Approved by a variance. The applicants will be required to maintain the historic drainage flows and run-off amounts that exist from the property. This site is located within the Municipal Separate Storm Sewer System (MS4) boundary. These areas are more urbanized or urbanizing with state mandated, higher water quality requirements. Projects that are within the MS4 area that disturb greater than or equal to 1 acre; or projects less than 1 acre that are part of a larger common plan of development or sale; require an approved water quality design. Questions pertaining to the MS4 requirements should be directed to the Public Works Department 970-304-6496. A "common plan of development or sale" is a contiguous area where multiple separate and distinct construction activities may be taking place at different times on different schedules, but remain related. Consistent with EPA guidance, "contiguous" is interpreted to mean construction activities located in close proximity to each other (within 1/4 mile). Construction activities are considered to be "related" if they share the same development plan, builder or contractor, equipment, storage areas, etc. Portions of the alignment may be located in a designated FEMA floodplain. Flood Hazard Development Permits will be required. Please show and label the floodplain boundaries and the FEMA Flood Zone and FEMA Map Panel Number on the plat. Contact the Floodplain Administrator, Diana Aungst, at 970-353-6100 ext. 3524 to discuss your project. If more than 1 acre is to be disturbed for construction of non pipeline or non -gravel pit items such as structures, parking lots, laydown yards etc..., a Weld County Grading Permit will be required prior to the start of construction. This site IS in a Geologic Hazard Area. The Colorado Geologic Society will be a referral agency. A geologic hazard permit may be required. The Colorado Geologic Survey (CGS) has expertise in geologic hazard areas and is a referral agency for this project. Contact Jill Carlson with the CGS at 303-384-2643 for more detailed information on the geologic hazards in your project area and any additional requirements that may be needed. Depth to mine A Site Plan will be required identifying the following (if applicable): 1-7 o Show and label location of drainage related features i.e. detention pond(s), ditches, etc... Detention ponds shall be labeled as "No Build/Storage Area" and include design volume o Show and label the drainage flow arrows showing how the stormwater flows across the property o Show and label the parking and traffic circulation flow arrows showing how the traffic moves around the property o Show and label the location of any floodplain boundaries (include permit number, floodplain type, map panel number and date) o Show and label the location of geological hazard Planning Department Additional fees may be included with the Building Permit such as Road Impact, County Facilities and Drainage fees. Please refer to the handout provided. Weld County has a Coordinated Planning Agreement (CPA) with the Towns/Cities of Fort Lupton, Frederick, Firestone, Dacono, Platteville, Milliken and Mead. The Planning Director will contact the Town Managers for each of these jurisdictions and give notice of this pre -application meeting. Staff advised the applicants to contact these jurisdictions regarding possible land use permitting. Please also contact Dacono and Frederick and have them complete the Notice of Inquiry (NOI). Staff urged the applicant to contact staff for any questions: Planner On Call available Monday through Friday 7:30 a.m. to 4:30 p.m. or contact Diana Aungst at 970-400- 3524 or daungst weldgov.com The applicant may be eligible for the Small Business Incentive Program (SBIP). Staff provided information regarding the program. Please visit http://www.co.weld.co.us/Departments/PlanningZoninq/SmallBusinesslncentiveProgram.html or contact Michelle Martin at 970-400-3571 or Tom Parko at 970-400-3572, for further direction. Staff provided information on Colorado's Enterprise Zone (EZ) program which provides state income tax credits to encourage businesses to locate/expand in designated economically distressed areas of the state. The Weld County EZ program is administered by Upstate Colorado Economic Development. The pipeline code was recently change to required that all the surrounding property owners within 150 must be notified. Per 23-2-520.7. The signature blocks required are the pipeline owner, the Planning Commission and the BOCC. Staff explained the USR process. The applicant shall submit 1 packet for a 7 day completeness review. After the 7 day completeness review the applicant will be informed of what items are still required to make the application complete. Staff requested that the applicant submit the remaining material in electronic form. Upon submittal of a completed application it will be sent out for referral for 28 days. The applicant will then meet with their Planner to discuss the referrals and address as many of the referrals as possible. At that meeting the Planning Commission hearing will be scheduled. The Board of County Commissioners hearing typically follows approximately 3 weeks after the Planning Commission hearing. The above notes are provided as a courtesy to the applicant. While we strive to help identify as many potential issues upfront during the pre application meeting we cannot anticipate every issue that may come up during the formal application process. The information contained herein has been placed on file with the Department of Planning Services. The pre -application is valid fora period of one (1) year from the date of pre - application. If a formal application is not received following the time period specified herein the Planning Department reserves the right to require a new pre -application meeting. Please note that all land use, building and impact fees are subject to change throughout this time period. End memorandum. 1-8 USE BY SPECIAL REVIEW USR) APPLICATION DEPARTMENT OF PLANNING SERVICES * 1555 N. 17T" AVENUE * GREELEY, CO 80631 www weldgov.com ' 970-400-6100 * FAX 970-304-6498 FOR PLANNING DEPARTMENT USE AMOUNT $ APPLICATION RECEIVED BY Parcel Number*: Multiple See USR Permit Maps Address of site Multiple See USR Permit Maps DATE RECEIVED: CASE # ASSIGNED: PLANNER ASSIGNED: Legal Description See USR Permit Maps ("A 12 digit number on Tax i.D information obtainable at www weldoov corn). Section: See USR Permit Maps Range: W Zone District: AgricultiaAcreage:See USR 7.loodplain 0 ()Geological Hazard YO O Airport Overlay YOGI® Permit Maps FEE OWNER(S) OF THE PROPERTY Name: Multiple See USR Permit Maps Company: Phone #: Street Address: City/State/Zip Code: Name: _ Company: Phone It: Email: Street Address City/State/Zip Code: Name: Email: Company: Phone #: Email: Street Address City/State/Zip Code APPLICANT OR AUTHORIZED AGENT (See below Authorization must accompany all applications signed by Authorized Agents) Name Brett E. Henry/Executive Director - Infrastructure Department Company City of Thornton Phone #: 720-977-6700 Email. Brett.Henry@cityofthornton.net Street Address 12450 Washington Street City/State/Zip Code Thornton, CO 80241-2405 PROPOSED USE The TWP PA -1 48 -inch raw water pipeline and associated appurtenances will convey domestic water owned by Thornton to Thornton. I (We) hereby depose and state under penalties of perjury that all statements proposals, and/or plans submitted with or contained within the application are true and correct to the best of my (our)knowledge. Signatures of all fee owners of property must sign this application. If an Authorized Agent signs, a letter of authorization from all fee owners must be included with the application If a corporation is the fee owner, notarized evidence must be included indicating that the signatory has to legal authorit to sign for the ci rporation 12(1q(2•rr orize. Agent Date Signature Owner or Authorized Agent Date n r Print Name Rev 4/2016 Section 3 Authorization Form This section addresses USR Procedural Guide Checklist, Applicant's representative/authorization form. Thornton is the Applicant and owner of the TWP PA -1. An Applicant's representative/authorization form is not applicable. TWP USR PA -1 SECTION 3 AUTHORIZATION FORM 3-1 Section 4 USR Questionnaire This section addresses the USR Procedural Guide Checklist, USR Questionnaire, and WCC as applicable. Planning Questions This section addresses the USR Questionnaire, Planning, WCC Sections 23-2-510 C.2.o and 23-2-510 C.2.i, and the criteria described in WCC Sections 23-2-480 A.1, 23-2-480 A.2, 23-2-480 A.4, 23-2-490 A, 23-2-490 8, and 23-2-490 D. P.1 Explain, in detail, the proposed use of the property. Thornton is proposing to construct, operate, and maintain the TWP PA -1, which is a section of a water delivery system that will convey domestic water Thornton purchased in the mid -1980's from the Water Supply and Storage Company system in unincorporated Larimer County, through Weld County, to Thornton. This Application requests approval of a location to construct, operate and maintain a segment of the water pipeline, TWP PA -1, which includes up to approximately 13.3 miles of a buried 48 -inch diameter water pipeline capable of conveying 40 mgd and associated appurtenances in unincorporated Weld County, Colorado. The TWP PA -1 appurtenances include buried fiber optic cable and various buried water pipeline appurtenances and structures, including access manways, blow -off assemblies (used to drain the water pipeline), combination air release valve vaults (used to exhaust air when filling the water pipeline and admitting air during draining operations), and isolation valve vaults. Photographs of example appurtenances and structures are shown in Figure 4.1. The size of structures and interior components of manholes and vaults will be designed specifically for the TWP PA -1 and could vary from the descriptions included in Figure 4.1. The water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168`h Avenue. Guidance from Weld County staff, indicates that the preferred route be located outside future planned road ROW. The preferred route is located parallel to but outside of the future planned Weld County road ROW where practicable. Typically, a 50 -foot permanent easement for the water pipeline and an additional 40 -foot temporary easement for construction will be purchased from property owners. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Combination Air Release Valve Vault. Photo of combination air release valve vault after construction. Vault is a concrete vault, buried below grade. Vault houses air release valves and an access manway. Visible features include the air vent, access hatch, and valve box markers. Isolation Valve Vault. Photo of isolation vault after construction. Vault is a concrete vault, buried below grade. Vault houses an isolation valve, air release/vacuum valves, and miscellaneous piping. Visible features include the air vent, access hatches, and valve box markers. Blow -off Assembly with Discharge Structure. Photo of blow -off manhole, pump well manhole, and dissipation structure after construction. The blow -off manhole is a concrete manhole that houses a blow - off drain valve. The blow off manhole is a concrete manhole that houses a 16 -inch pump out pipeline. The dissipation structure is a concrete structure located at grade. Visible features include the air vent, dissipation structure, manhole cover, and valve box markers. Blow -off Assembly with Pump Out. Photo of blow -off manhole and pump well manhole after construction. The blow -off manhole is a concrete manhole that houses a blow -off drain valve. The pump well manhole is a concrete manhole that houses a pump out pipeline. Visible features include the air vent, dissipation structure, manhole cover, and valve box markers. FIGURE 4.1 Example Buried Appurtenances P.2 Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 22 of the Comprehensive Plan. The water pipeline and appurtenances will be buried with minimal above ground equipment. There will be minimal effects to the rural character of Weld County. Thornton will construct, operate, and maintain the TWP PA -1 in a manner consistent with existing and planned land uses in Weld County. Thornton is committed to cooperating and coordinating with the agricultural community and industrial and municipal land owners in the vicinity. TWP USR PA -1 SECTION 4 QUESTIONNAIRE 4-2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Guiding Principles The Comprehensive Plan, is intended to be used for the general purpose of guiding and accomplishing the coordinated, adjusted and harmonious development of Weld County. Thornton intends to comply with the guiding principles of the Comprehensive Plan relevant to the TWP PA -1. Private Property Rights Thornton will purchase easements through good -faith negotiations with property owners and will only use eminent domain when all other reasonable options have been explored. Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. The process to develop the water pipeline route was iterative, and is a result of negotiations with individual property owners, or is a result of detailed land, utility, or resource surveys that revealed engineering or environmental constraints. Thornton is committed to working with property owners to determine the best location for the water pipeline. The TWP PA -1 is being developed in a manner that is respectful of private property rights. Respect for Agriculture Tradition The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. Agricultural use within the permanent easement can continue after construction, and TWP PA -1 is compatible with the agricultural land use in the TWP PA -1. See Figure 4.2 for a map of the zoning within Weld County that is associated with TWP PA -1. Fairness in the Land Use Change Procedure and Regulations Addressing Land Use Changes The TWP PA -1 will not require any land use or zone changes. Recognition of Weld County's Diversity The TWP PA -1 represents a low -intensity land use that will be compatible with existing agricultural land use, low density residential development, open space, and other uses, and is otherwise compatible with Weld County's geographic, demographic, cultural, social and economic diversity. To determine the alternative corridor least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the initial outreach meeting with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems, including planned developments, for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. TWP USR PA 1 SECTION 4 QUESTIONNAIRE Thornton Water Project .r — Al i 'IN`, 160TH AVE co BROOMFIELD 7. C� Thornton — RnedStrearr,Cana/Dtcn FIRESTONE 1H DR ?BLE Av DACONO CITY OF THORNTON COLORADO ' 2450 WASHINGTON ST THORNTON. CO 80241-2405 • 2f20/20'8 E8M SAGE AVE- z c cc U- PINE'CO E 1ST ST 8TH: ST 11 0 06 ncn = 1 2 maes 12 ■ M.:es — County Boundary -- Ra-road TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Right -of -Way TWPPA-1 Route.n Unincorporated Wed County TWP PA.'' Route outside Unincorporated Weld County E1 Lake/Reservo:' Weld County Zoning Ag'cutu'e Comme-c a Estate MI Industrial E� PUD Resdents In U 2 - BRIGHT Corporate Boundary Brighton Broomi.e+d Oacono Ene F. restone Fort Lupton Fredenck Longmont Mead Northgtenn Platteville Thornton Figure 4.2 Zoning within TWP PA -1 b/<p Sr.) c wq Sri C.an, G + remise ' "CaV GS %Ci'--i4 aGd C t45R 0q)i 5'S' Pc3Nt YVA Vic J .Sai'S:J1C MN'S& CI ,01.4 Vr) 4VrISC +OT_'00-!'A 4%. THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Outreach meetings were conducted with the following local governments: • Berthoud • Dacono • Firestone • Fort Collins • Frederick • Greeley • Johnstown • Larimer County • Loveland • Mead • Milliken • Timnath • Weld County • Wellington • Windsor Figure 4.3 shows municipal and GMA boundaries within the TWP PA -1 route. Boundaries shown are based on GIS data collected in May 2018 from municipalities. Thornton recognizes that the energy industry is an essential industry in Weld County. As part of the coordination process for the TWP and to help minimize impacts to the energy industry, Thornton presented the TWP at the Energy Industry Working Group (Weld County oil and gas companies) on December 15, 2016. In addition, outreach letters have been sent to oil and gas companies to initiate coordination of activities. Economic Growth The construction, operation, and maintenance of the TWP PA -1 will not require any new public facilities or impact existing services such as police, fire, waste water, and healthcare. Thornton will purchase easements through good -faith negotiations with property owners and will only use eminent domain when all other reasonable options have been explored. To determine the water pipeline route least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the outreach meetings with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems, including planned developments, for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. Guidance from Weld County staff indicated that the preferred route be located outside future planned road ROW. The preferred route is located parallel to but outside of the future planned Weld County road ROW where practicable. The TWP PA -1 construction contractors will provide crews that are not anticipated to exceed approximately 100 workers at any one time. Some workers may reside outside of the local areas and will require lodging or temporary housing. The number of construction workers on site will depend on the contractor and the construction activity occurring during a particular time. Thornton will endorse hiring local workers. TWP USR PA -1 SECTION 4 QUESTIONNAIRE Thornton Water Project ZINNIA AVE Cr• R5B� ;119 L•NGMONT1 :5 CR 14 rT CR 8.75 ERIE'P"NV �CR6 ERIE. ite z tt NJ 2 co 160TH AVE (r+T•hanvon ADAMS AVE MEAD MEAD GMA s GRAM' 88 S Eic 4.E PINE CONE AVE FREDERICK GMA FREDERICK DACONO GM4 f DACONO BROOMFIELD NORTHGLENN THORNTON '63TH AVE CITY OF THORNTON COLORADO '7450 WASHINGTON ST THORNTON, CO 802.41 2405 S 0 m w 1220/20'. 8 0.6 1:nen = 1.2 miles 1 2 Miles LATTEVILLE 168TH AVE 171 4.1 ,i 1 TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Rigntof-Way TWP PA-• Route in a Unincorporated Wed County TWP PA Routeoutsde "U' Unincorporated We'd County --- Railroad I-� River/Stream/Canal/Ditch 1 La ce/Reseinor 440 it:CC CR 2 5 PO TLUPT N ELINE RD n 7. tn r< BRIGHTON/ • . BR;DGE 5 r Figure 4.3 Town and GMA Boundaries within TWP PA -1 Route %�3 7ww +na .wrr CX G AntU-r.-atr natal ASK 0aJea_Se •-KW??'vvC4v*P' S, WO -J..ent1VtACE woinC11OsantVA H-• GVAVH 4Y0St Nf}7J � :*111 ♦v THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TWP PA -1 contractors and construction workers will likely support local businesses to meet a need for durable and nondurable goods and services. Goals and Policies The Comprehensive Plan contains policies to guide land use within unincorporated areas of Weld County. The information provided in Section C.2.i of the Summary Statement demonstrates that the TWP PA -1 is consistent with the goals and policies of the Comprehensive Plan. P.3 Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 23 (Zoning) and the zone district in which it is located. The TWP PA -1 within unincorporated Weld County is located in areas designated as A (Agricultural) Zone District. WCC Section 23-3-20 L identifies utility service facilities are allowed as a use by right in agricultural zone districts. WCC Section 23-3-40 KK identifies domestic water pipelines are acceptable as a Use by Special Review in the agricultural zone district. Chapter 23 of the WCC outlines general provisions, procedures and permits, and zone district designations. This Application is consistent with the general provisions and procedural requirements in Article II, Division 6, Use by Special Review Permits for PIPELINE — DOMESTIC WATER. The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The agricultural land use in the TWP PA -1 area is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. See Figure 4.2 for a map of the zoning within Weld County that is associated with TWP PA -1. P.4 Describe what type of land uses surround the site. Explain how the proposed use is consistent and compatible with surrounding land uses. The TWP PA -1, within unincorporated Weld County, is located in, and adjacent to, rural land use areas designated as agricultural zoning. The water pipeline and fiber optic cable will be buried at a depth sufficient to prevent interference with anticipated land uses such as farming, grazing or access. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. P.5 What are the hours and days of operation? (e.g. Monday thru Friday 8:00 am to 5:00 pm) Water Pipeline Construction Construction hours will typically be from 7:00 a.m. to 7:00 p.m., Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities may be TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 required to complete uninterruptible tasks, meet an in-service date, or minimize short-term impacts to traffic. Water Pipeline Post -construction After construction, the TWP PA -1 pipeline and appurtenances could operate year-round, 24 hours a day; however, these facilities are intended to be unmanned. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. P.6 List the number of full time and/or part time employees proposed to work at this site. Water Pipeline Design Activities Thornton and TWP PA -1 contractors, including engineers, biologists, specialists, surveyors, and land services representatives will periodically visit the site for design related activities beginning in 2019 through 2020. Activities will include: • Engineering site assessments: o Environmental o Cultural resources o Subsurface utility investigations o Subsurface geotechnical investigations • Land surveys • Property owner meetings Activities will typically take place from 8 a.m. to 5 p.m. Monday through Friday. No more than 10 workers are anticipated to be on site at any one time. Water Pipeline Construction The TWP PA -1 may be constructed in multiple construction packages. Construction activities for TWP PA -1 are proposed to begin in 2021 and end in 2023, and operation of the TWP system is scheduled to begin in 2025 after construction of all TWP packages are complete. Work on multiple construction packages may occur concurrently with multiple crews of 10 to 55 workers each. At the peak of construction, approximately 80 to 100 workers could be required at multiple sites along the TWP PA -1. Construction work hours will typically be from 7 a.m. to 7 p.m. Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities, such as hydrostatic testing, require 24/7 operation, and shift work may be required. However, shifts are not anticipated for construction on a day-to-day basis. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Water Pipeline Post -construction After construction, the TWP PA -1 pipeline and appurtenances could operate year-round, 24 hours a day; however, these facilities are intended to be unmanned. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. P.7 If shift work is proposed include the number of employees per shift. Water Pipeline Design Activities No shift work is anticipated for TWP PA -1 design activities. Activities will typically take place from 8 a.m. to 5 p.m. Monday through Friday. No more than 10 workers are anticipated to be on site at any one time. Water Pipeline Construction Shift work may be required based on the contractors' means and methods for construction. However, shifts are not anticipated for construction on a day-to-day basis. Water Pipeline Post -construction No shift work is anticipated for the TWP PA -1 post -construction. P.8 List the number of people who will use this site. Include contractors, truck drivers, customers, volunteers, etc. Water Pipeline Design Activities Thornton and TWP PA -1 contractors, including engineers, biologists, specialists, surveyors, and land services representatives will periodically visit the site for design related activities beginning in 2019 through 2020. Activities and people associated with activities will include: • Engineering site assessments: Environmental — Thornton staff, engineer, biologist, natural resource specialist o Cultural resources — Thornton staff, engineer, cultural resource specialist o Subsurface utility investigations — Thornton staff, engineer, truck operators, locators o Subsurface geotechnical investigations — Thornton staff, engineer, drill rig operator • Land surveys — Thornton staff, engineer, surveyor • Property owner meetings — Thornton staff, land services representatives, engineer Activities will typically take place from 8 a.m. to 5 p.m. Monday through Friday. No more than 10 workers are anticipated to be on site at any one time. Water Pipeline Construction The TWP PA -1 may be constructed in multiple construction packages. Construction activities for TWP PA -1 are proposed to begin in 2021 and end in 2023, and operation of the TWP system is scheduled to begin in 2025 after construction of all TWP packages are complete. Work on multiple construction packages may occur concurrently with multiple crews of 10 to 55 workers each. At the TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 peak of construction, approximately 80 to 100 workers could be required at multiple sites along the TWP PA -1. Construction work hours will typically be from 7 a.m. to 7 p.m. Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities, such as hydrostatic testing, require 24/7 operation. People that could use the site during construction include: • Thornton staff • Thornton's agent • Design engineers • Construction managers • Inspectors (special inspectors, Weld County inspectors, others) • Welders • General contractor • Specialty contractors • Surveyors • Delivery truck personnel • Materials testing personnel Water Pipeline Post -construction After construction, the TWP PA -1 pipeline and appurtenances could operate year-round, 24 hours a day; however, these facilities are intended to be unmanned. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. P.9 If this is a dairy, livestock confinement operation, kennel, etc., list the number and type of animals. Not applicable. P.10 Describe the type of lot surface and the square footage of each type. (e.g. asphalt, gravel, landscaping, dirt, grass, buildings) Not applicable. No lots are proposed as part of the TWP PA -1. Surface impacts will be temporary during construction. Up to six 2 -acre temporary staging areas are anticipated to be used during construction in unincorporated Weld County and could include temporary gravel surfaces. Land will be restored to pre -construction conditions in accordance with Weld County standards, other standards, or property owner preferences as applicable. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 P.11 How many parking spaces are proposed? How many handicapped (ADA) parking spaces are proposed? Water Pipeline Construction Parking and vehicle storage during construction will be primarily on property within the permanent or temporary easement or at temporary staging areas. ADA compliant parking spaces will be provided at construction trailers on an as needed basis. At this time, Thornton anticipates using up to 6 temporary staging areas within unincorporated Weld County during construction of the TWP PA -1. When additional parking is required, Thornton will negotiate with landowners and commercial businesses for available parking to avoid parking in the public ROW. Temporary staging areas for parking and worker buses or shuttles to transport workers to the active work site may also be implemented to reduce traffic when practicable. Water Pipeline Post -construction No permanent parking spaces are anticipated for the TWP PA -1. P.12 Explain the existing and proposed landscaping for the site. Based on site visits conducted in 2016 and 2017 along publicly accessible areas and using Google Earth imagery, six broad existing vegetation communities within the TWP PA -1 were identified and are as follows: • Mixed upland • Nonnative upland • Riparian • Wetlands • Agricultural lands • Developed/disturbed areas Water pipeline crossings of high -quality vegetation such as wetlands or riparian communities will be constructed using trenchless construction methods. Additional information on existing vegetation is included in Appendix B. The majority of the impacts on vegetation will be temporary during construction of the water pipeline and long-term impacts to native vegetation communities are not expected. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. Restored vegetation will be comparable to existing vegetation. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner preferences or regulatory requirements will be specified in the SWMP for the revegetation of disturbed areas. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. P.13 Describe the type of fence proposed for the site (e.g. 6 foot chain link with earth tone slats) No new permanent fencing is proposed for the site. Existing fences removed to accommodate construction activities will be restored. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 P.14 Describe the proposed screening for all parking and outdoor storage areas. If the site is located in a floodplain outdoor storage is restricted. Water Pipeline Construction Visual effects during construction will be temporary and associated with the activities of equipment and construction crews. Employees will be parking and storing materials at designated staging areas. These staging areas will be located in areas outside of floodplains and in open areas away from residential dwellings where practicable. If required by Weld County, screening of temporary staging areas will be implemented. Water Pipeline Post -construction No dedicated permanent parking spaces or outdoor storage areas are anticipated for the TWP PA -1. P.15 Explain any proposed reclamation procedures when termination of the Use by Special Review activity occurs. Currently, there is no intent to decommission the water pipeline. The water pipeline will be maintained, monitored, and repaired/replaced as needed. P.16 Who will provide fire protection to the site? Water Pipeline Construction The TWP PA -1 spans multiple fire protection districts: Greater Brighton Fire Protection District, Fort Lupton Fire Protection District, Frederick Firestone Fire Protection District, Platteville-Gilcrest Fire Protection District, and Mountain View Fire Protection District. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. On -site fire district personnel will not be required during construction. During construction, fire extinguishers will be located at designated areas along the TWP PA -1 route including but not limited to staging areas and areas of heavy machinery such as trenchless operations. The TWP PA -1 contractors will develop a safety plan that will include an emergency response plan for the construction phase of the TWP PA -1. The plan will be written to include identification of emergency response departments near the TWP PA -1 area, including how and when to communicate with emergency responders as applicable. Water Pipeline Post -construction The water pipeline and appurtenances will be buried with minimal above ground equipment and will not require fire protection. P.17 List all proposed on -site and off -site improvements associated with the use (e.g. landscaping, fencing, buildings, drainage, turn lanes, etc.) and a timeline of when you will have each one of the improvements completed. The water pipeline and appurtenances will be buried with minimal above ground equipment. Construction activities for TWP PA -1 components in unincorporated Weld County are proposed to begin in 2021 and end in 2023 followed by restoration activities. Operation of the TWP system is scheduled to begin in 2025 after construction of all TWP packages are complete. TWP PA -1 components include the following: TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 • Water pipeline. Up to approximately 13.3 miles of a buried, 48 -inch diameter water pipeline capable of conveying 40 mgd of water will be constructed in unincorporated Weld County. The water pipeline will be buried at a minimum depth of 4 feet below grade. The depth of bury will vary based on existing utility crossings, road crossings, water crossings, other existing or proposed features, and property owner preferences. Typically, a 50 -foot permanent easement for the water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners except where the TWP PA -1 is proposed to be constructed in road ROW. Thornton understands that, if the TWP PA -1 crosses Weld County ROW or is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. • Appurtenances. o Communications. Up to approximately 13.3 miles of buried fiber optic cable, including buried manholes, test stations, and other fiber optic cable appurtenances will generally parallel the water pipeline in unincorporated Weld County. The fiber optic cable will be installed in close proximity to the water pipeline. The fiber optic cable will allow Thornton to remotely operate the TWP. The cable will be buried at a minimum depth of 3 feet below grade. The depth of bury will vary based on existing utility crossings, road crossings, water crossings, or other existing or proposed features, and property owner preferences. Other appurtenances. Various buried water pipeline appurtenances and structures, including access manways, blow off assemblies (used to drain the water pipeline), combination air release valve vaults (used to exhaust air when filling the water pipeline and admitting air during draining operations), and isolation valve vaults will be constructed. Photographs of example appurtenances and structures are shown in Figure 4.1. The size of structures and interior components of manholes and vaults will be designed specifically for the TWP PA -1 and could vary from the description. Additional permanent and temporary easements could be obtained for these appurtenances. Disturbed areas will be restored to pre -construction grades and revegetated after construction where appropriate. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner preferences or regulatory requirements will be specified in the SWMP for the revegetation of disturbed areas. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. As discussed with Weld County Public Works staff, permanent access locations will be determined during detailed design. Thornton will coordinate access locations and requirements, such as surface materials, with Weld Count Public Works staff. Thornton will obtain Weld County access permits as required. Engineering Questions This section addresses USR Questionnaire, Engineering, and WCC Section 23-2-510 C.2.k and 23-2-510 C.2.1, and the criteria described in WCC Sections 23-2-480 A.8 and 23-2-490 H. E.1 Describe how many roundtrips/day are expected for each vehicle type: Passenger Cars/Pickups, Tandem Trucks, Semi-Truck/Trailer/RV (Roundtrip = 1 trip in and 1 trip out of site) Water Pipeline Design Activities Thornton and TWP PA -1 contractors, including engineers, biologists, specialists, surveyors, and land services representatives will periodically visit the site for design related activities beginning in 2019 through 2020. The majority of vehicles expected are cars and pickups. Other vehicles could include TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 truck mounted drill rig and water truck for geotechnical exploration and subsurface utility investigation vehicles. Trips will be conducted periodically depending on the design activity and are not expected to exceed 3 trips per day per vehicle type. Water Pipeline Construction During the construction phase of the TWP PA -1, trip generation will be primarily related to construction activities, including delivery of materials and equipment, worker transport from designated parking area to work site, and water pipeline and appurtenances installation. Trip generation will vary according to the phase and location of construction. On average, five trips per day to the site are expected for each type of construction vehicle: pickup trucks, welding trucks, pipe/material hauling trucks, water trucks, and equipment transport trucks for each construction package. Water Pipeline Post -construction Post -construction trip generation will be primarily related to the operation and maintenance of the TWP PA -1. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. E.2 Describe the expected travel routes for site traffic. Water Pipeline Construction Truck haul routes for material deliveries from off -site locations will be chosen to facilitate safe and expedient delivery while minimizing traffic impacts. It is expected that the daily commuting route for construction workers would also follow the same roads as the truck haul routes to the construction site or temporary staging areas for parking. Anticipated delivery and commuting routes are shown in Figure 4.4. The major roads and highways within Weld County that could be utilized for delivery of construction materials and construction worker trips as part of construction operations are presented in Table 4.1. TABLE 4.1 Possible Construction Delivery and Commuting Routes County or Major Roads State Highways Federal Highways County Road 2 (168th Avenue), County Road State Highway 52, State Highway Interstate 25, Interstate 25 8, County Road 9, County Road 10, County 66 Northeast Frontage Road Road 17, County Road 18, County Road 19, County Road 20, County Road 24, County Road 26, County Road 28 TWP USR PA -1 SECTION 4 QUESTIONNAIRE 4 14 Thornton Water Project ZINNIA AVE c u C8 5 6 .rte NGMON 1 its TIPPLE a CR.,1r FREDERICK CR 8.75 CR 6 ERIE ` L. +d, AtPIN< CT v I 160TH AVE y � BROOMF/ELD ! „ 1 C4Thornton vS GRAt'P FIRES -ONE 81; FIREST.ORE ',..x ELM ST SABLE AVE CR 20 PINE 'CONE AVE ^ CR 20 1 1,1 CR 15 8TH ST DACONO 16.STH A\E 1` THORNTO4 NORTHGLENN CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 802412405 12/20/2018 S 0.6 0 1 'non = 1 2 miles LATTEVILLE 440 .. .. .. .. 168TH AVE .. F- C R 32 CR 30 R26 CR 18.5 FO'TLUPT•N CR 12 CR 8 CR4 CR ZS BASELINE. R0 .. BRIGHTON BUSH ST BRIDGE ST TWP PA -1 Route in I La &Reseror Unincorporated Weld County Possible Haul Route — and Current or Future Road Right -of -Way TWPPA•1 Route in a Unincorporated Weld County TWPPA.1 Route outside Unincorporated Weld County County Boundary RnrerlStreanVCanaUD tch 12 ■ Miles —.. Figure 4.4 Possible Haul Routes So m **- Ott - v7GT »meNTOi'O4M*. zit*C TAU 0QbE _We PFgwtt ,C4O.swas. EIMF .3 -NSW !DUCE VAPSISE CT CsonPOSSi. �a ao,.rrI act a vxv AESP091 ' M0'A+S fain AV THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Water Pipeline Post -construction After construction use of roads will be minimal. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Possible commuting routes are presented in the Table 4.2. It is expected that post -construction haul routes would be similar to routes used during construction and that vehicles would primarily utilize Interstate 25, Interstate 25 Northeast Frontage Road, State Highways 52 and 66, County Road 17, County Road 19, and east/west county roads along the TWP PA -1. TABLE 4.2 Possible Post -construction Delivery and Commuting Routes County or Major Roads State Highways Federal Highways County Road 2 (168th Avenue), County Road State Highway 52, State Highway Interstate 25, Interstate 25 8, County Road 9, County Road 10, County 66 Northeast Frontage Road Road 17, County Road 18, County Road 19, County Road 20, County Road 24, County Road 26, County Road 28 E.3 Describe the travel distribution along the routes (e.g. 50% of traffic will come from the north, 20% from the south, 30% from the east, etc.) Water Pipeline Construction The travel distribution of travel routes for construction cannot be identified at this time. Travel distribution depends on the TWP PA -1 contractors who will be selected during a bid process after design is complete. The TWP PA -1 contractors will be responsible for providing materials for construction. The water pipeline is anticipated to be transported from out of state. Construction staff and other deliveries are anticipated to travel from the south from the Denver metropolitan area and from the north from Greeley or Fort Collins. Water Pipeline Post -construction Travel routes post -construction are anticipated to occur from the south from Thornton (95%). Maintenance vehicles may travel from the north for maintenance of the northern portion of the water pipeline or in the event of an emergency (5%). E.4 Describe the time of day that you expect the highest traffic volumes from above. Water Pipeline Construction Construction work hours will be from 7 a.m. to 7 p.m. Monday through Saturday unless otherwise specified by Weld County. Construction may extend beyond these hours on an as -required and approved basis. Vehicle trips will occur on a varying time schedule throughout the construction work hours. Delivery of construction materials could occur anytime during construction work hours. Water Pipeline Post -construction It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. E.5 Describe where the access to the site is planned. Construction access along the TWP PA -1 route will be along roadways, at existing access locations when practicable. Existing and new proposed access locations for permanent and temporary use along the water pipeline are identified on Figure 4.5. As discussed with Weld County Public Works staff, locations are subject to change based on TWP PA -1 contractors' needs. Thornton will obtain individual Weld County, CDOT, and other municipal access permits for any necessary temporary and permanent access locations as applicable. If access is needed using private roads or drives, Thornton or the TWP PA -1 contractors will negotiate use with owners. Stabilized construction entrances/exits will be installed, as necessary, to access locations with paved roads. Permanent access locations will be designed per Weld County and municipal standards based on location of access. Temporary access will be unpaved and used primarily for transport of materials and construction workers. Temporary and permanent access locations will be closed to the public. Temporary access locations could include warning signs, flaggers, and controlled access, as necessary. Additionally, gates or other approved barriers on temporary access roads may be utilized when construction workers are not present to control unauthorized access. Temporary access locations will be restored to pre - construction conditions upon the completion of construction. It is anticipated that access to the TWP PA -1 route will be required along State Highway 66 and County Roads 2, 10, 12, 17, 18 and 20. E.6 Drainage Design: Detention pond summarized in a drainage report is required unless the project falls under an exception to stormwater detention requirements per code section 23-12-30 F.1. E.6.A Does your site qualify for an exception to stormwater detention? If so, describe in a drainage narrative the following: The TWP PA -1 is exempt from the requirement for stormwater detention under the exception for pipelines or transmission lines, per WCC Section 23-12-30 F.1.a.5. E.6.A.1 Which exception is being applied for and include supporting documentation. The water pipeline is exempt from the requirement for stormwater detention under the exception for pipelines or transmission lines, per WCC Section 23-12-30 F.1.a.5. E.6.A.2 Where the water originates if it flows onto the property from an offsite source Offsite stormwater originates on lands adjacent to the water pipeline easement, and land drains over land and via drainageways onto the water pipeline easement. Water originates from multiple locations along the TWP PA -1 depending on topography. Disturbed areas will be restored to pre - construction grades after construction and historic flows will be maintained. See Attachment C.2.c-3 for additional information. E.6.A.3 Where it flows to as it leaves the property Stormwater will exit the water pipeline easement by overland flow or flow in existing drainageways. Water will leave the site from multiple locations along the TWP PA -1 depending on topography. Disturbed areas will be restored to pre -construction grades after construction and historic flows will be maintained. See Attachment C.2.c-3 for additional information. TWP USR PA -1 SECTION 4 QUESTIONNAIRE -�P1tiF DY C1 a / 1T� Pt4 160TH AVE Thornton Water Project ADAMS AVE MEAD ZINNIA AVE FIRESTONE L • NG ONT) CP '6 FREDERICK CR 12 • Y. 10 CR6 TS DAGONO ER RIO R ;y1 ERIE L • Wit• / CR 4 BROOMFIELD ?� ; NORTHGLENN PLATTEVILLE aRES TONE BD - CR24 DE, , a:NE CONE AVE CR 20 • MC CLDRE AVE 'S" $1 ai.• S t "s r CRS 7 7 D 52 J CR6 CR4 THORNTbN --- — •-- —--•—•--• \ N — /-S --i - BRIGHTON / - s-• s FO'TLUPT.N 9TH STr��-++WTH ST CR 2 03 CR 42 CR25 BA LLWE RRD 3 • Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 80241.2405 0 S 06 12 Miles TWP PA -1 Route in Unincorporated Weld County and Current or Future Road R:gnt-d-Way TWP PA -1 Route in Unincorporated Weld County TWP PA -1 Route outside Unincorporated Weld County �••County Boundary River/S trea mVCan al/D i tcn I I • Lake/Reservar Ex.song Access Location New Access . Location Figure 4.5 Possible TWP PA -1 Access Locations ' 2/20/2018 1 'nth = 1.2 miles iV, "4 "♦ •C4 rrt 4%. t'tASA RDEVS6•+4 MOM 4 t5Wil- EDI1F_JSaaElafiCE_WOOS t Mod V ti. SS OCAT.O•R ice AES'tt9t •240-2}.1.2. 402w b/sn CQWR Sun Can,- 0201 4 18 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 E.6.A.4 The direction of flow across the property Disturbed areas will be restored to pre -construction grades after construction and historic flows will be maintained. Generalized flow directions for stormwater are described based on a review of coarse topography (10 -foot elevation contour intervals). While the descriptions provided are generally accurate, it is possible that local flow directions may vary slightly from those described herein, due to minor localized variations in finer topography (e.g. undulations) along the TWP PA -1. In the northern most reach of the TWP PA -1 is in the HUC 1019000507 watershed, Boulder Creek - Saint Vrain Creek Basin from just north of Saint Vrain Creek to approximately 1/2 mile north of Highway 52. North of Highway 66 land generally drains in a southeasterly direction toward St. Vrain Creek, as shown in Figure 4.6. St. Vrain Creek generally drains from the south/southwest to the north/northeast as it crosses the TWP PA -1 near Highway 66. South of St. Vrain Creek, from Highway 66 to County Road 24 topography generally drains to the north Beginning at a point approximately % miles south of County Road 24, flow direction changes due to topography. From this point south of County Road 24, to approximately County Road 18, land drains across the TWP PA -1 from east to west. Along the TWP PA -1, from County Road 18 to a local high point approximately % mile north of Highway 52, land drains from southeast to northwest and then from south to north. From the local high point to approximately % mile south of County Road 10, the TWP PA -1 encroaches into the 1019000306 watershed, Little Dry Creek -South Platte River Basin. Topography generally drains from northwest to southeast and from north to south to Little Dry Creek. Little Dry Creek flows from west to east as it crosses the TWP PA -1. Immediately south of Little Dry Creek, land drains north toward Little Dry Creek. Approximately mile south of Little Dry Creek, the TWP PA -1 crosses a localized ridge. Along this ridge, land generally drains from west to east across the TWP PA -1. E.6.A.5 If there have been previous drainage problems with the property Disturbed areas will be restored to pre -construction grades after construction and historic flows will be maintained. The TWP PA -1 route crosses Saint Vrain Creek in the vicinity of Highway 66. In September 2013, Saint Vrain Creek experienced extreme flooding conditions, following an approximately 1000 -year rain event in the watershed, extensive damage to property and infrastructure, in communities generally west of the TWP PA -1 route. Historic flooding also occurred in areas immediately west of the TWP PA -1 route, in Frederick, Firestone, Evanston, and Dacono in May 1957. A flood summary published by the National Center for Atmospheric Research (NCAR) indicates many homes in the area had 3 feet of water on the ground floor at the height of the flood (http://www.assessment.ucar.edu/flood/fld sum loc.html). E.6.B Does your site require a stormwater detention pond? If so, the following applies: The TWP PA -1 is exempt from the requirement for stormwater detention under the exception for pipelines or transmission lines, per WCC Section 23-12-30 F.1.a.5. Therefore, USR Questionnaire, Engineering questions 6.B.1 through 6.B.3 are not applicable. TWP USR PA -1 SECTION 4 QUESTIONNAIRE Thornton Water Project ZINNIA AYE L NGMONT1 ERIE -LAMSI,VE FIRESTONE PrtEpcwv FREDERICK 1019000507 Bouldeitreek-Saint Vrain Creek Basin ERIE V v4 150TH AVE Cr Thornton 8L± 4Y_ DACONO CITY OF THORNTON COLORADO '2450 WASHINGTON ST THORNTON. CO 80241 2405 12120/20/6 0 ND ELM ST -':NE CONE AVE 1. . MC Ci6RF..AVE 3F« 57 gr., Si S 0.6 12 ■ Miles 1 Inch = 1 2 miles 3 GRAND AV 10190CR .• s 00306 Little.Dry Creek -South Platte River Basin f 1019000304 Big Dry Creek -South Platte River Basin I ► eldi. rut F1' AVE .:�Ti. ..�.. .i:.... (darn% C f,nnll- TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Right -et -Way TWP PA.' Route in a' Unincorporated We'd County TWP PA-• Route outside Unincorporated Weld County —••— County Boundary Railroad 5 Stream/River/Canal/Ditch I Lace/Reservoir HUC '0 Boundary Drainage ='ow Direction '00h Contour 20ft Contour x225 BASELa 1 art RD i� ¶1 BR/GHTO a.. WitJVE ST -t. 8U5H S l Figure 4.6 Drainage and Erosion Control .cw ♦..2 u3GS CJwa Sec tom CX • G a MIS. r.'Ori\. Cr ♦Oq r.5 ACT fA A GVita $6 a V. IIGY.MASAa. SIVE. ..saAC7i3SCCI Wta&Cnov:w:vr.E . w•n aCSO% COstOO. VA A:SaCS 7/10g0'� •70!01 AV THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Environmental Health Questions This section addresses USR Questionnaire, Environmental Health, WCC Section 23-2-510 C.2.f, and the Procedural Guide, Evidence of Adequate Water Supply and Evidence of Adequate Sewage Disposal. EH.1 What is the drinking water source on the property? If utilizing a drinking water well include either the well permit or well permit application that was submitted to the State - Division of Water Resources. If utilizing a public water tap include a letter from the Water District, a tap or meter number, or a copy of the water bill. Water Pipeline Construction During construction, water may be purchased from local water providers for construction activities such as watering a site to minimize fugitive dust, soil conditioning to obtain the required backfill compaction, hydrostatic testing, and revegetation. TWP PA -1 contractors will provide bottled water, water cooler service, or other temporary sources of drinking water during construction. Temporary water sources could include nearby fire hydrants or water pipelines. Thornton and/or TWP PA -1 contractors will negotiate purchase of water deliveries from municipal and/or private sources. Water Pipeline Post -construction The TWP PA -1 will not include the need for permanent water facilities as the water pipeline will be an unmanned facility. EH.2 What type of sewage disposal system is on the property? If utilizing an existing septic system provide the septic permit number. If there is no septic permit due to the age of the existing septic system, apply for a septic permit through the Department of Public Health and Environment prior to submitting this application. If a new septic system will be installed please state "a new septic system is proposed". Only propose portable toilets if the use is consistent with the Department of Public Health and Environment's portable toilet policy. Water Pipeline Construction During construction, portable toilets will be place in several locations along the TWP PA -1 construction site based on the general plan for construction. TWP PA -1 contractors will be responsible for supplying and maintaining portable toilets. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws and regulations. Water Pipeline Post -construction The TWP PA -1 will not include the need for permanent sanitary facilities as the water pipeline will be an unmanned facility. EH.3 If storage or warehousing is proposed, what type of items will be stored? Water Pipeline Construction At this time, Thornton anticipates using up to 6 temporary staging areas within unincorporated Weld County during construction of the TWP PA -1. Preliminary anticipated staging locations in unincorporated Weld County are shown on Figure 4.7. Each staging area is approximately 2 acres of land. Staging areas will be used for water pipe and appurtenances material storage, parking, equipment storage, field offices, and storage of excavated materials. Parking and vehicle storage during construction will be primarily on property within the permanent or temporary easement or at temporary staging areas. TWP USR PA -1 SECTION 4 QUESTIONNAIRE Thornton Water Project ADAMS AVE MEAD ZINNIA AVE iRES TONE 80 FIRESTONE i LURE AVE r DONO I 110.• Carr—. ERIE L. L � ` :'J1 8 1.” v. Ht (_ 2. 160TH AVE Lake/Reservoir Potental Staging Locatwn t: R_. BROOMFIELD aZ . NORTHGLENN I 41--1 f l / (3/4(4 Thornton -.TH0RNT0N• CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 802414405 '2/2012018 CUS S 0 0 6 1.2 Miles finch =12mdes CR 22 CR 20 CR :e CR 16 CA :4 -2 CR4 • LATTEVILLE TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Rcgnt-of-Way TWP PA -1 Route in Unincorporated Weld County TWP PA -1 Route outside Unincorporated Weld County County Boundary River/Stream/Cana/Ditch 16411H Ain FO T LUPT . N 1 47 -IS? 0. - 1� CR CR8 CR4 2 CR25 Ina et, RD LL•� _ BRIGHTON ST Figure 4.7 Potential Staging Locations So .3 C7*& ..ea Com G]0 G+MW r..o4••Pt so444o4ECrT*S* C*- x4 Sid 4f oivirt*.008444Art.tsat..0 LaNAREIOLOCr WwSNfCNIA.AStmnc.CCA *Cs 4fs'09' •≥•406.4. nsf Av 1; THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Thornton plans to off-load and temporarily store the water pipe along the easement as it is delivered when possible to reduce the number of trips required for material delivery until the water pipe is placed in its permanent buried location. If needed, stockpiling of water pipe could take place within the temporary and permanent easement or at temporary staging areas. Stockpiling in lieu of stringing the water pipe will only be conducted where additional space is required. Areas shown on Figure 4.7 could be used for stringing water pipe or as temporary staging areas. Thornton will negotiate with property owners or agencies for the short-term use of temporary staging areas. The TWP PA -1 contractors could negotiate agreements with property owners for additional staging areas if additional area is required for construction operations as determined by the TWP PA -1 contractors. Water Pipeline Post -construction No permanent storage or warehousing is proposed for the TWP PA -1. EH. 4 Describe where and how storage and/or stockpile of wastes, chemicals, and/or petroleum will occur on this site. Water Pipeline Construction Construction, operation, and maintenance activities involving Thornton or the TWP PA -1 contractor bringing any hazardous materials onto the site will comply with applicable federal, state, and local laws and regulations regarding the handling, storage, disposal, transportation, and use of hazardous substances. In its contract with the TWP PA -1 contractor, Thornton will require that the TWP PA -1 contractor comply with applicable laws. If trenching activities uncover previously unknown areas of contamination that are apparent, work will be stopped until the party responsible for such contamination has properly managed and/or disposed of such contamination. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. As applicable, pavement and vegetation will be removed from the site and will be properly disposed of. If top soil exists, it will be removed and stockpiled separately away from other excavated material. Excavated materials from trench excavations will be stored temporarily along the trench. Excess materials will be removed from the site and disposed of in accordance with applicable laws and regulations. Spoils from trench excavations, construction -related equipment, materials, and supplies will be stored outside of the 100 -year floodplain per local floodplain regulations. Excavated material or other construction materials will not be stockpiled or deposited near or on streambanks or other watercourse perimeters where they could be washed away by high water or storm runoff, or could encroach upon stream banks. BMPs will be implemented for stormwater management. Examples of BMPs that could be used to protect water resources from potential contamination are provided in Attachment C.2.c-3, Drainage and Erosion Control Information. See Question EH.5 for additional information regarding fuel storage. Water Pipeline Post -construction No hazardous wastes, chemicals, or petroleum will be stored or stockpiled for the TWP PA -1. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 EH.5 If there will be fuel storage on site indicate the gallons and the secondary containment. State the number of tanks and gallons per tank. Water Pipeline during Construction If possible, fueling requirements will be met before arrival at the construction site. Heavy equipment left on site for construction activities will require onsite fueling at staging areas or the construction site. No bulk fuel storage is anticipated to occur on site. Fueling vehicles will be equipped with spill kits and fire extinguishers, and personnel will be properly trained in spill prevention, control, and countermeasures. To minimize the potential for a spill during fuel transfers and be prepared in the event of a spill, the following measures will be followed (including the Code of Colorado Regulations [CCR] and Code of Federal Regulations [CFR] that will be followed during loading/unloading of fuel): • Keep fire away while loading/unloading. Persons in the vicinity are forbidden to smoke, light matches, or carry any flame or lighted cigar, pipe, or cigarette. 49CFR 177.834(c, d) • Fuel will not be loaded/unloaded from any motor vehicle while the engine is running. The exception is when the engine of the vehicle is to be used in the operation of the pump. 49CFR 177.837(a) • The fuel tank records will be reviewed to determine the theoretical fuel tank level. 7CCR 1101- 14 S2-3-1 and S2 -4-2(a)(2) • The fuel tank level gauge will be inspected to determine the actual fuel tank level before u nloading takes place. (Note: Any fuel tank level discrepancies will be resolved before hooking u p to the fuel tank.) 7CCR 1101-14 S2-3-1 & S2 -4-2(a)(2) • The supply truck driver will observe the transfer during the entire operation. 49CFR 177.834(i)(2) • Once the truck is in position, its emergency brake will be applied and reasonable precautions will be taken to prevent motion of the truck during unloading (example: utilize wheel chocks when parked on an incline). 49CFR 177.834(e) • Signs must be posted that remind drivers not to pull away before detaching hoses. 40CFR 112.7(h)(3) • Containers and cargo tanks will be grounded before and during transfer. 49CFR 177.837(b) & (c) • The transfer line must be properly disengaged, and the valves and piping of both the fuel tank and truck must be checked for leaks before allowing the truck to leave the site. (40CFR 112.7 h(4) for trucks) Water Pipeline Post -construction No fuel will be stored for the TWP PA -1. EH.6 If there will be washing of vehicles or equipment on site indicate how the wash water will be contained. Water Pipeline Construction The washing of concrete delivery trucks will be in designated concrete washout areas that will be defined in the SWMP. Locations will be in staging areas or within the permanent and temporary easements. Concrete wash water will not be allowed to be disposed of on site. Washout water will be required to evaporate before removal of concrete waste to an offsite facility. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The TWP PA -1 contractors will be required to install appropriate BMPs, such as soil berms around fueling, cleaning and maintenance areas. Water Pipeline Post -construction No vehicles will be washed post -construction. EH.7 If there will be floor drains indicate how the fluids will be contained. Water Pipeline Construction and Post -construction No floor drains will be installed with the TWP PA -1. EH.8 Indicate if there will be any air emissions. (e.g. painting, oil storage, etc.) Water Pipeline Construction The amount of surface clearing required for construction will exceed 25 acres; therefore, Thornton and/or the TWP PA -1 contractors will develop a fugitive dust control plan, submit an air pollution emissions notice, and obtain a permit from CDPHE before construction activities in accordance with state air quality regulations. Construction is anticipated to be constructed under multiple packages; therefore, multiple permits will be obtained as required. Construction activities, such as vehicles driven over cleared ground, general disturbance to vegetated areas, or soil stockpiles susceptible to winds, can cause fugitive dust. During construction, dust control measures will be implemented. Examples of these mitigation measures that may be used on the TWP PA -1 include: • Speed limits for construction vehicles within the work area • Water application to disturbed areas, dirt access roads, and stockpiles • Erosion control techniques and BMPs • Revegetation of disturbed areas where appropriate following construction activities Painting activities are anticipated to occur to appurtenance piping inside manholes and vaults to protect facilities from corrosion. TWP PA -1 contractors will be required to meet federal, state, and local requirements limiting emission of volatile organic compounds. Water Pipeline Post -construction The water pipeline and appurtenances will not have emission sources. EH.9 Provide a design and operations plan if applicable. (e.g. composting, landfills, etc.) An operations plan is not applicable. After construction, the TWP PA -1 facilities could operate year- round, 24 hours a day. The operational schedule of the TWP system has not yet been determined and could potentially change seasonally and from year-to-year. The water pipeline requires minimal operational oversight after construction. Design of the TWP PA -1 has not been completed. EH.10 Provide a nuisance management plan if applicable. (e.g. dairies, feedlots, etc.) See section C.2.c of Section C Summary Statement for more information on potential nuisances and mitigation measures that may be implemented. TWP USR PA -1 SECTION 4 QUESTIONNAIRE THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Building Questions This section addresses USR Questionnaire, Building Questions and WCCSection 23-2-510 C.2.a. B.1 List the type, size (square footage), and number of existing and proposed structures. Show and label all existing and proposed structures on the USR drawing. Label the use of the building and the square footage. No buildings will be required for TWP PA -1. Various buried raw water pipeline appurtenances and structures, including access manways, blow off assemblies (used to drain the pipeline), combination air release valve vaults (used to exhaust air when filling the water pipeline and admitting air during draining operations), and isolation valve vaults may be constructed throughout the TWP PA -1 route. Examples photos of appurtenances and structures are shown in Figure 4.1. Photos and descriptions are examples. The location, size of structures, and interior components of manholes and vaults will be designed specifically for the TWP PA -1 and could vary from the descriptions provided. B.2 Explain how the existing structures will be used for this USR? No existing structures will be utilized in unincorporated Weld County for the TWP PA -1. B.3 List the proposed use(s) of each structure. Various buried water pipeline appurtenances and structures, including access manways, blow -off assemblies (used to drain the water pipeline), combination air release valve vaults (used to exhaust air when filling the water pipeline and admitting air during draining operations), and isolation valve vaults, will be constructed. Photographs of example appurtenances and structures are shown in Figure 4.1. The size of structures and interior components of manholes and vaults will be designed specifically for the TWP PA -1 route and could vary from the description. TWP USR PA -1 SECTION 4 QUESTIONNAIRE 4-26 Section 5 USR Maps This section addresses USR Procedural Guide Checklist, USR map and WCC Section 23-2-520. USR Permit Maps are included in Volume 3, USR XX-XXXX Permit Maps. The USR number for the TWP PA -1 to be provided by Weld County will be included on final maps. TWP USR PA -1 SECTION 5 USR MAPS 5-1 Section 6 Certificate of Conveyances Form This section addresses USR Procedural Guide Checklist, Certificate of Conveyances form. The Certificate of Conveyances form requirement is not applicable to the TWP PA -1. TWP USR PA -1 SECTION 6 CERTIFICATE OF CONVEYANCES FORM 6-1 Section 7 List of Property Owners This section addresses USR Procedural Guide Checklist, property owners (surface estate) list. A surface property owners list with names, addresses, and the corresponding parcel numbers assigned by the Weld County Assessor is included in accordance with USR Procedural Guide Checklist and WCCSection 23-2-470 8.5. The list includes properties within 150 feet on each side of the centerline of the preferred route for the TWP PA -1. The list is compiled from the records of the Weld County Assessor. Figures 7.1 through Figure 7.12 show the adjacent property owner notification area. An affidavit attesting to the accuracy of the mailing list is included. TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-1 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 AFFIDAVIT OF ACCURACY OF MAILING LIST I, Jody Henry, being first duly sworn, depose and state: 1. I am the Thornton Water Project ("TWP") Owner's Advisor for the City of Thornton ("Thornton"). 2. As the TWP Owner's Advisor for Thornton, I have knowledge of the mailing list compiled by CH2M HILL on behalf of Thornton for Weld County property owners within 150 -feet on each side of the TWP PA -1 preferred route centerline, which information was obtained from the records of the Weld County Assessors office on December 18, 2018. 3. To the best of my knowledge, information, and belief, the property owners list provided is an accurate list of the names, addresses, and parcel numbers of the property owners identified within the area described in Paragraph 2 above. FURTHER YOUR AFFIANT SAYETH NOT. tt� hl)A. JodyYienry, LWP Owner's Advisor STATE OF COLORADO ) )ss. COUNTY OF DOUGLAS ) The foregoing instrument was subscribed and sworn to before me this) 11 ---day of JeCf( , 2018 by Jody Henry CH2M HILL, TWP Owner's Advisor. WITNESS my hand and official seal. My commission expires: SEAL oc2(as7=2oa TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS Notary Public &La. THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 120920000026 SALAZAR PAUL R 14542 COUNTY ROAD 17 PLATTEVILLE CO 80651-9101 120920100003 FREDON LLC PO BOX 443 MEAD CO 80542-0443 120920100041 DIXIE WATER LLC 400 POYDRAS ST STE 2100 NEW ORLEANS LA 70130-3282 120920300032 SALAZAR PETE JR 7031 HIGHWAY 66 PLATTEVILLE CO 80651-9010 120920400038 DEPARTMENT OF TRANSPORTATION STATE OF COLORADO 2829 W HOWARD PL DENVER CO 80204-2305 120920400039 SALAZAR PETE 7031 HIGHWAY 66 PLATTEVILLE CO 80651-9010 120920400040 DEPARTMENT OF TRANSPORTATION STATE OF COLORADO 4201E ARKANSAS AVE DENVER CO 80222-3406 120921300018 DEPARTMENT OF TRANSPORTATION STATE OF COLORADO 2829 W HOWARD PL DENVER CO 80204-2305 120921300019 PHOENIX DEVELOPMENT COMPANY INC 812 GRAVIER ST STE 360 NEW ORLEANS LA 70112-1466 120928000002 VARRA COMPANIES INC 8120 GAGE ST FREDERICK CO 80516-9439 120928000006 READY MIXED CONCRETE COMPANY 5775 FRANKLIN ST DENVER CO 80216-1521 120928200017 FIRESTONE TOWN OF PO BOX 100 FIRESTONE CO 80520-0100 120929000026 ACORD ST VRAIN VALLEY RANCH LLC 7541 COUNTY ROAD 26 3/4 LONGMONT CO 80504-9514 120929000033 VARRA COMPANIES INC 8120 GAGE ST FREDERICK CO 80516-9439 120929000047 FIRESTONE TOWN OF PO BOX 100 FIRESTONE CO 80520-0100 120929100052 VARRA COMPANIES INC 8120 GAGE ST FREDERICK CO 80516-9439 120929400051 COLLINS ROBERT ALLEN 13187 COUNTY ROAD 17 PLATTEVILLE CO 80651-9105 120932000001 HALEY TERRENCE S 12840 COUNTY ROAD 17 LONGMONT CO 80504-9563 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-3 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 120932000030 ACORD ST VRAIN VALLEY RANCH LLC 7541 COUNTY ROAD 26 3/4 LONGMONT CO 80504-9514 120932000031 LG EVERIST INC 350 S MAIN AVE STE 400 SIOUX FALLS SD 57104-6312 120932000033 WEBER JOSEPH C (HEIRS OF) PO BOX 72 GOLDEN CO 80402-0072 120932101003 VARRA PASQUALE 8120 GAGE ST FREDERICK CO 80516-9439 120932300032 LG EVERIST INC 350 S MAIN AVE STE 400 SIOUX FALLS SD 57104-6312 120932401001 COMPTON ROBERT B 12190 COUNTY ROAD 17 FREDERICK CO 80504-9563 120932401002 VARRA PASQUALE 8120 GAGE ST FREDERICK CO 80516-9439 120932401004 FIRESTONE TOWN OF PO BOX 100 FIRESTONE CO 80504-9000 120933000039 MC CLAY STEVEN JAMES 9173 COUNTY ROAD 26 FORT LUPTON CO 80621-9715 120933200051 VARRA COMPANIES INC 8120 GAGE ST FREDERICK CO 80516-9439 131104000003 BELK DENISE L 1940 GARLAND ST LAKEWOOD CO 80215-2973 131104000006 ZADEL JENNIFER L 11298 COUNTY ROAD 17 LONGMONT CO 80504-9562 131104000070 MCCALL DALE 11274 COUNTY ROAD 17 LONGMONT CO 80504-9562 131104000072 BEAVERS RODNEY C 11174 COUNTY ROAD 17 LONGMONT CO 80504-5225 131104000073 HUFFAKER NORMAN J 11096 COUNTY ROAD 17 LONGMONT CO 80501-5225 131104201002 BABCOCK LAND CORP 212 N WAHSATCH AVE STE 301 COLORADO SPRINGS CO 80903-3476 131104201003 BABCOCK LAND CORP 212 N WAHSATCH AVE STE 301 COLORADO SPRINGS CO 80903-3476 131105000036 SCOTT GERALDINE F 1639 GAY ST LONGMONT CO 80501-2616 131105000041 BIRKIN MARK 11455 COUNTY ROAD 17 LONGMONT CO 80504-9562 131105000058 VANNORSDEL DAVID R 11335 COUNTY ROAD 17 LONGMONT CO 80504-9562 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS /_q THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 131105000059 ALLEN JENNIE L 11371 COUNTY ROAD 17 LONGMONT CO 80504-9562 131105100001 PACKO MARK P 7690 COUNTY ROAD 26 LONGMONT CO 80504-9529 131105100005 CHAPMAN BRIAN E 7750 COUNTY ROAD 26 LONGMONT CO 80504-9529 131105100007 HEIN RICHARD L PO BOX 649 FORT LUPTON CO 80621-0649 131105100011 RHOADES HAROLD R C/O ZACHARY G WILSON 425 W MULBERRY ST STE 208 FORT COLLINS CO 80521-2848 131105100012 SCOTT TONI J 11611 COUNTY ROAD 17 LONGMONT CO 80504-9562 131108000049 YOUNG ROBERT R 10265 COUNTY ROAD 17 LONGMONT CO 80504-9441 131108000051 OWEN CRAIG A TRUST 7751 COUNTY ROAD 22 LONGMONT CO 80504-9411 131108000052 RICHARDSON JEFFREY W 10879 COUNTY ROAD 17 LONGMONT CO 80504-9441 131108100056 SATER MARJORIE A PO BOX 17 FIRESTONE CO 80520-0017 131108100057 SATER FAMILY INTERESTS LP 7544 COUNTY ROAD 24 LONGMONT CO 80504-9548 131108400005 SUSSBAUER SHERYL RUTH REVOCABLE TRUST 10401 COUNTY ROAD 17 LONGMONT CO 80504-9441 131108400007 WESTERVELT CAROLYN SUE (BN) 10371 COUNTY ROAD 17 LONGMONT CO 80504-9441 131108401001 ALDERMAN BRIAN J PO BOX 211 FIRESTONE CO 80520-0211 131108401027 PANORAMA ESTATES LLC 9075 COUNTY ROAD 10 FORT LUPTON CO 80621-8447 131109000001 MARTIN RUTH M 8592 COUNTY ROAD 24 FORT LUPTON CO 80621-9710 131109000002 SPRAGUE MINDY 10732 COUNTY ROAD 17 LONGMONT CO 80504-9441 131109000003 GARDNER ESTATE LLC 1129 19TH AVE LONGMONTFORT LUPTON CO 806219710 131109000004 MARTIN DONALD L 8592 COUNTY ROAD 24 FORT LUPTON CO 80621-9710 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-S THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 131109000005 MARTIN DONALD L 8592 COUNTY ROAD 24 FORT LUPTON CO 80621-9710 131109000006 MARTIN RUTH M 8592 COUNTY ROAD 24 FORT LUPTON CO 80621-9710 131116000002 COLORADO STATE OF 1127 N SHERMAN ST STE 300 DENVER CO 80203-2398 131117000001 BROOKER TAD ALLEN 7974 COUNTY ROAD 22 LONGMONT CO 80504-9410 131117000006 SANDERS RAYMOND E 7911 COUNTY ROAD 20 LONGMONT CO 80504-9422 131117006001 BIGHORN 4792 LIMITED PARTNERSHIP 9730 HIGHLAND GLEN PL COLORADO SPRINGS CO 80920-2438 131120000017 ANADARKO E&P ONSHORE LLC ATTN: TRAVIS HOLLAND-APC PROPERTY TAX PO BOX 173779 DENVER CO 80217-3779 131120400005 DIXIE WATER LLC 400 POYDRAS ST STE 2100 NEW ORLEANS LA 70130-3282 131120400034 DIXIE WATER LLC 400 POYDRAS ST STE 2100 NEW ORLEANS LA 70130-3282 131121000003 ANADARKO E&P ONSHORE LLC ATTN: TRAVIS HOLLAND-APC PROPERTY TAX PO BOX 173779 DENVER CO 80217-3779 131121000004 CARR PAULA R REVOCABLE LIVING TRUST (32.295% INT) 922 COLLYER ST LONGMONT CO 80501-4525 131128200005 WESTMORELAND JUSTIN L 7812 COUNTY ROAD 17 FORT LUPTON CO 80621-9039 131128200006 BASS ROBERT H 8076 COUNTY ROAD 18 FORT LUPTON CO 80621-9003 131128200010 TE VELDE MARVIN J FAMILY TRUST 7678 COUNTY ROAD 17 FORT LUPTON CO 80621-9039 131128300051 TE VELDE MARVIN J & SANDRA MAE FAMILY TR 7678 COUNTY ROAD 17 FORT LUPTON CO 80621-9039 131128300055 WIMMER HANS 3318 BARBADOS PL BOULDER CO 80301-6063 131128300056 WIMMER HANS 3318 BARBADOS PL BOULDER CO 80301-6063 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 131129000011 CAMENISCH CHARITABLE REMAINDER C/O ROXIE M KOLDEWAY TRUSTEE 9842 HIGHWAY 52 FORT LUPTON CO 80621-8430 131129000031 MALLORY DAVID E 7543 COUNTY ROAD 16 FREDERICK CO 80530-9005 131132000013 NELSON CARL A-1/2 INT C/O CENTRAL WELD COUNTY WATER DIST 2235 2ND AVE GREELEY CO 80631-7203 131132000021 FREDERICK TOWN OF PO BOX 435 FREDERICK CO 80530-0435 131132000032 7772 COUNTY ROAD 16 FREDERICK CO 80530-9008 SMITH BRETT R 131132000034 FARMERS RESERVOIR & IRRIGATION CO 80 S 27TH AVE BRIGHTON CO 80601-2699 131132100022 LEYVA FEDERICO 6505 COUNTY ROAD 17 FORT LUPTON CO 80621-9034 131132100023 BRUNEMEIER JAMES A 2526 COUNTY ROAD 10 ERIE CO 80516-8603 131132100024 CENTRAL WELD COUNTY WATER DISTRICT 2235 2ND AVE GREELEY CO 80631-7203 131132100025 BRUNEMEIER JAMES A 2526 COUNTY ROAD 10 ERIE CO 80516-8603 131132400003 SAIS BURTON L 7923 COUNTY ROAD 14 FORT LUPTON CO 80621-9000 131132417004 JOHNSON FARMS LLP C/O SUSAN TROUDT 16 SUNSET CIR LONGMONT CO 80501-4708 131133000007 PUBLIC SERVICE CO OF COLO TAX SERVICE DEPARTMENT PO BOX 1979 DENVER CO 80201-1979 131133200053 ATC WATERTOWN LLC PO BOX 723597 ATLANTA GA 31139-0597 131133200055 FIRESTONE TOWN OF PO BOX 100 FIRESTONE CO 80520-0100 131133200056 FIRESTONE TOWN OF PO BOX 100 FIRESTONE CO 80520-0100 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-7 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 131133200057 IHEARTMEDIA TOWER CO I LLC C/O JONATHAN HART 2800 POST OAK BLVD STE 3700 HOUSTON TX 77056-6170 131133318001 PUBLIC SERVICE COMPANY OF COLORADO TAX SERVICES DEPT PO BOX 1979 DENVER CO 80201-1979 131133318002 FREDERICK TOWN OF PO BOX 435 FREDERICK CO 80530-0435 146904200007 DEPARTMENT OF HIGHWAYS STATE OF COLORADO 4201 E ARKANSAS AVE DENVER CO 802223406 146904200008 PHAM VINH Q 4540 W 105TH DR WESTMINSTER CO 800311972 146904300003 DEPARTMENT OF TRANSPORTATION STATE OF COLORADO 4201E ARKANSAS AVE DENVER CO 802223406 146904300004 CARBON VALLEY AG LLC 8316 HIGHWAY 52 FORT LUPTON CO 806218109 146905000017 JOHNSON FARMS LLP C/O SUSAN TROUDT 16 SUNSET CIR LONGMONT CO 805014708 146905100005 DEPARTMENT OF HIGHWAYS STATE OF COLORADO 4201 E ARKANSAS AVE DENVER CO 802223406 146905100011 COLUMBINE JERSEY FARMS INC 80 MISTLETOE RD GOLDEN CO 804019623 146908000017 NRC CO 1 LLC 755E MULBERRY AVE 6TH FLR SAN ANTONIO TX 782123129 146909000003 NRC CO 1 LLC 755E MULBERRY AVE 6TH FLR SAN ANTONIO TX 782123129 146916000001 MC FEE JOHN L JR ETAL C/O RONALD W MC FEE PO BOX 743 CHEYENNE WY 820030743 146916000087 LOR LEE 13980 HOLLY ST BRIGHTON CO 806027903 146916300022 AVALOS FERNANDO RETA 324 GLEN AYRE ST DACONO CO 805149540 146916300082 3240 COUNTY ROAD 17 BRIGHTON CO 806038926 KLETZMAYER LIVING TRUST 146916300083 ESKILDSEN SANDRA 3100 COUNTY ROAD 17 BRIGHTON CO 806038926 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 1 8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 146916300089 KELLY COLLEEN M 3464 COUNTY ROAD 17 BRIGHTON CO 806038926 146916300090 LOPEZ-BARTOLO ADAM 3468 COUNTY ROAD 17 BRIGHTON CO 806038926 146917000025 UNDERHILL JOHN E 8206 COUNTY ROAD 8 BRIGHTON CO 806038902 146917100045 FIRST UNITED HMONG ALLIANCE CHURCH OF 7300 ZUNI ST DENVER CO 802213165 146917100046 KLETZMAYER LIVING TRUST 3871 COUNTY ROAD 17 BRIGHTON CO 806038900 146917100047 3871 COUNTY ROAD 17 BRIGHTON CO 806038900 KLETZMAYER LIVING TRUST 146917100052 UNDERHILL JOHN E 8206 COUNTY ROAD 8 BRIGHTON CO 806038902 146917100057 UNDERHILL JOHN E 8206 COUNTY ROAD 8 BRIGHTON CO 806038902 146917400039 DOLAN MATHEW C 3481 COUNTY ROAD 17 BRIGHTON CO 806038900 146917400040 UNDERHILL JOHN E 8206 COUNTY ROAD 8 BRIGHTON CO 806038902 146917400041 UNDERHILL JOHN E 8206 COUNTY ROAD 8 BRIGHTON CO 806038902 146920000018 GASPAR JOHN N 19407 E 147TH PL BRIGHTON CO 80602 146920000019 AUKER PATRICK 5 2793 COUNTY ROAD 17 BRIGHTON CO 806038922 146920400009 CHA YINGTSE PO BOX 625 WESTMINSTER CO 800360625 146920400011 ROOS RICHARD J SR 3525 COLORADO BLVD DACONO CO 805148508 146921000006 ROAD 17 LLC 2624 COUNTY ROAD 17 BRIGHTON CO 806038921 146921000007 STEVENS ROBERT A 2464 COUNTY ROAD 17 BRIGHTON CO 806038921 146921000008 WARREN DELVIN G C/O WARRENS LANDSCAPE & SPRINKLER INC 847 LINGER DR PARKER AZ 853448135 146921000009 BAXTER JAMES E 2198 COUNTY ROAD 17 BRIGHTON CO 806038910 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7.9 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 146921000010 ESTERMAN LAURA 2164 COUNTY ROAD 17 BRIGHTON CO 806038910 146921000012 EL COLORADO VIEW LLC 2044 COUNTY ROAD 17 BRIGHTON CO 806038910 146921000013 POGGENSEE DENNIS L 2034 COUNTY ROAD 17 BRIGHTON CO 806038910 146921200016 OLSON RICHARD 2990 COUNTY ROAD 17 BRIGHTON CO 806038921 146928000021 PUBLIC SERVICE CO OF COLO TAX SERVICE DEPARTMENT PO BOX 1979 DENVER CO 802011979 146928200002 D & C FARMS LLLP (5/12 INT) 8709 COUNTY ROAD 4 BRIGHTON CO 806038901 146929000045 D & C FARMS LLLP (5/12 INT) 8709 COUNTY ROAD 4 BRIGHTON CO 806038901 146929000046 SANDOVAL BOB R 10398 W 81ST AVE ARVADA CO 800052076 146929200040 ERN LTD PARTNERSHIP C/O ERNEST P ZARLENGO 2550 E FLORA PL DENVER CO 802106826 146932000014 HOWARD CRISTOPHER R 773 COUNTY ROAD 17 BRIGHTON CO 806038911 146932000015 D & C FARMS LLLP (1/2 INT) 8709 COUNTY ROAD 4 BRIGHTON CO 806038901 146932400001 JACOBUCCI JOHN J (40% INT) C/O JOSEPH JACOBUCCI 483 COUNTY ROAD 17 BRIGHTON CO 806038924 146932400002 RUPERT LINDA ANN 423 COUNTY ROAD 17 BRIGHTON CO 806018924 146932400003 SCHREINER LOIS MAE 403 COUNTY ROAD 17 BRIGHTON CO 806038924 146933000019 WYCOFF WILLIAM R 333 COUNTY ROAD 17 BRIGHTON CO 806038945 146933200001 SHELDON JENNIFER (99% INT) 716 COUNTY ROAD 17 BRIGHTON CO 806038908 146933200003 VASQUEZ GILBERTO 626 COUNTY ROAD 17 BRIGHTON CO 806038936 146933200004 WELD FARM HOLDINGS LLC 905 W 124TH AVE STE 210 WESTMINSTER CO 802341716 .11/VP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7-10 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE 7.1 List of Surrounding Property Owners within 150 feet of the Centerline of the Preferred Route PARCEL NAME ADDRESS CITY STATE ZIP CODE 146933200024 WHEELER 2014 REVOCABLE TRUST 526 COUNTY ROAD 17 BRIGHTON CO 806038944 146933200036 BARGEN JENNIFER M 848 COUNTY ROAD 17 BRIGHTON CO 806038908 TWP USR PA -1 SECTION 7 LIST OF PROPERTY OWNERS 7.11 Thornton Water Project Q Notificatgn Area — 50* Easement Boundary (Unincorporated) (Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 80241-2405 0 S 250 500 Feet St SI 5011 Easement Boundary (Incorporated) Ralroad I I Lake/Reservdr — River/Stream/Canai/Ditch Figure 7.1 Adjacent Property Owner Notification Area 10/8/2018 1 ncn = 500 'eet w.rab T *a tonne .Ott-Fat.bituren.sA MSn ca •+fv,ttnzc,ial.artfw:.0 ,dta• �G't�RX1iQi. tLt rm ••r.,win n.w, 3�2•e • s� r+�u swam PW0 4oQ$ GQWM, III Ca" {o7QT, 71CpG Thornton Water Project CITY OF THORNTON COLORADO Q Notification Area — 50ft Easement Boundary (Unincorporated) 504 Easement Boundary (Incorporated! Ra •cad Late!Reservor R wer1StreamICanat/Dltcn Figure 7. Adjacent Property Owne Notification Area 10/8/2018 a At 6964 r ..h4'•`es \C 12450 WASHINGTON ST THORNTON. CO 80241-2405 0 250 500 Feet 1 Inch = 500 'eel —=aA aM. Cr 7 ASA 04X a St • Dc. a.V,t l ice; G. 9u Aa A- „a.r.AOO>A• `411, r_e lc%: Airu.s' .. x.a V._ J .&% 1S:a•• Sc. ..%S :?Aa A,4"it ACC. Thornton Water Project (� Thornton ( CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORN TON CO 80241-2405 0 S 250 500 Feet Q Notification Area 50ft Easement Boundary (Unincorporated) 50't Easement Boundary (tncaroa ated) Ra -oac LaKe/Reservor R wer/Stream/Canal/Ditch a Mk Corporate Boundary ;.a. C.,(• Figure 7.3I Adjacent Property Owner) Notification Ares '0/8/2018 1 mcn = 500 feet Se, -a C3f i Nee Can. COT ]'i2]G ati EA%EUEAT "V1 wi5 a w, Thornton Water Project ((4Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 8024 1-24 05 0 C 250 500 Feet Q Nohficahon Area — 50ft Easement Boundary (Unincorporated) - - 50ft Easement Boundary (Incorporated) Railroad Lake/Reservor R'verlStrea m/Canallo t tcn Figure 7.4j Adjacent Property Owneri Notification Area 10/8/2018 I inch = 500 feet A •MM T.-Ci..TO. %CAT... A♦ 24OJFCF`ASt Ca ]k 454 • 4E 4VITTNGIG:SN/AT SW(..i a A•426 ›A• %Orbat),3A€Ai Vl cr ..T'i Vl'i-C.A'.'S\%'r' Sam! ti -D JSGS GfTA'A MtCan, t ADDG Thornton Water Project 0*Thornton Corporate Boundary CITY OF THORNTON COLORADO 12450 WASHINGTON ST (HORN FON, CO 8024'-2405 s 0 250 500 Feet Notification Area 5011 Easement Boundary (Unincorporated) — 50* Easement Boundary (Incorporated) Railroad n Lake/Reservor — RivedStream/Canal/Dach Figure 7.f Adjacent Property Owner Notification Area '0/8/2018 r 1 inch = 500 feet Saen:•• ' 40 a 505 ca*q W re Co.', . -' J1COG Thornton Water Project Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 8024' -2405 0/8r2018 FREDERICK S 0 250 500 a Feet ' net) = 500 'mot Q Notification Area Corporate Boundary SOft Easement Boundary (Unincorporated) Frederick 50ft Easement Boundary (Incoroorned) Ra -road Lake/Reservoir R vertStrearn/Cana/Cliten Figure 7.6 Adjacent Property Owner Notification Area ••* 4'pM Two}iN`l;% \C^'a'—: ]\ aY: _ '4[. na.- 3 A ICI4 c•SF Ye 11 • ' V AJM.'WWII 'Y2 w %-J . 5G4 Clr.a �7f 71{Qy Thornton Water Project lr�Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST S FIRESTONE Ii 0 250 500 Feet (� Nooficat o-' Area 50ft Easement Boundary (Unincorporated) 50ft Easement Boundary (Incorporated) Railroad LakefReservar — River/Stream/Canal/Ditch • w'• , Corporate Boundary F i restone Net Figure 7.7 Adjacent Property Ownei Notification Arez THORN TON. CO 8024' 2405 10!81201 8 1 inch = 500 feet wAIwM ..( +'r "CAM*rIN ' ? rTAM 0a Y.4_ti3• rE RIM rl a.GGJSMM+ Ni SwF_ -1_3R< MOAN. tTW AT%0N EASEMENT • G..a.. ..n . Cr. r lal ....en. r•r I 'V/rIr Thornton Water Project Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 80241-2405 1018/2018 250 500 ees Feet 1 inch = 500 feet Q Notification Area Corporate Boundary 50ft Easement Boundary (Unincorporated) Firestone SOft Easement Boundary (Incorporated) Railroad _ Lake/Reservoir — Rnrer/Stream/CanaUDitch Figure 7.8 Adjacent Property Owner Notification Area .or. •-;) ;JSGS C7+w SIC Con. ;,7Gr ACCG Thornton Water Project C�# Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON CO 8024. 2435 Q Notification Area — Soft Easement Boundary (Un ncoroaated) Soft Easement Boundary (Incorporated) Ra 'road LaKeJResevar — River/Stream/Canal/Ditch S 0 250 500 Feet Corporate Boundary re stone FIR - FIRESTONE Figure 7.9 Adjacent Property Owner Notification Area 0/8/2018 A alibi& TMCR4tC% 1.;•1 f- r[CYak_ 1 inch = 500 feet 4S'6'rek 44n T hG*IMLIWatk Nita .E4.NOPA•!47WGTi8N EASEYtN ••a•T KC. lM •O'Y)b•I • i} x Ian SGA COWS Sec CAR. WC 34WG Thornton Water Project ((emornton CITY OF THORNTON COLORADO S n Not,hcat on Area — Soft Easement Boundary (Unincorporated) SOft Easement Boundary (Incorporated) Rai i road I11 Lake/Reservoir — R:ver/Stream/Cana/Ditch Corporate Boundary F reston( Figure 7.1C Adjacent Property Owner Notification Arez 17450 WASHINGTON ST THORNTON, CO 80241.2405 10/8/2018 0 250 nch = 500 feet 500 Feet b 'va NW) .SGc C VNV *.o nn . *%MOWTIW4FTOM_.an*to. _PaCtAeRTASt_Ci24_ 96' , x 4Yitt NG C.VVA?tSaC; 5. JS J*+ Thornton Water Project Cry Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORN EON. CO 8024' 2405 0 S 250 500 Feet ID Notification Area 50ft Easement Boundary (U., ncarooratedl — — Soft Easement Boundary (Incorporated) Ralroad Lake/Resenor — Rrver/Stream/CanaUOttch Corporate Boundary F restore Mead Figure 7.111 Adjacent Property Owner' Notification Area, 10/5/2010 1 pnch = 500 feet N9 Thornton Water Project (('�mornton CITY OF THORNTON COLORADO Q Notdicat on Area — SOft Easement Boundary (Untnccr:xrated) SOft Easement Boundary ;Incorporated) Ra I road Lake/Reservoir R,ver/Strea m/Canadatcn Figure 7.1 Adjacent Property Owne Notification Area 12450 WASHINGTON ST THORNTON. CO 80241-2405 10/8/2018 'h ♦'Stie T• -.Caste`. s 0 250 500 Feet 1 inch = 500 feet `ASa CIO,- i %S' "FAVITINGIGE.VAS, Sw= A..1.>a' Y. Cie` •Se V So- soy cayr+ *. Section 8 Evidence of Adequate Water Supply This section addresses USR Procedural Guide Checklist, evidence of adequate water supply. Water Pipeline Construction During construction, water may be purchased from local water providers for construction activities such as watering a construction site to minimize fugitive dust, soil conditioning to obtain the required backfill compaction, hydrostatic testing, and revegetation. TWP PA -1 contractor will provide bottled water, water cooler service, or other temporary sources of drinking water during construction. Temporary water sources could include nearby fire hydrants or water pipelines. Thornton and/or TWP PA -1 contractors will negotiate purchase of water deliveries from municipal and/or private sources. Water Pipeline Post -construction The TWP PA -1 will not include the need for permanent sanitary facilities as the underground water pipeline will be unmanned. TWP USR PA -1 SECTION 8 EVIDENCE OF WATER SUPPLY 8-1 Section 9 Evidence of Adequate Sewage Disposal This section addresses USR Procedural Guide Checklist, evidence of adequate sewage disposal. Water Pipeline Construction During construction, portable toilets will be placed in several locations along the TWP PA -1 construction site based on the general plan for construction. TWP PA -1 contractors will be responsible for supplying and maintaining portable toilets. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws and regulations. Water Pipeline Post -construction The TWP PA -1 will not include the need for permanent sanitary facilities as the underground water pipeline will be unmanned. TWP USR PA -1 SECTION 9 EVIDENCE OF SEWAGE DISPOSAL 9-1 Section 10 Notice of Inquiry This section addresses USR Procedural Guide Checklist, notice of inquiry. As requested by Weld County staff, Thornton sent Notice of Inquiry forms provided by Weld County to Dacono, Fort Lupton, Frederick, Firestone, Platteville, and Mead asking for signature on their respective forms. Exhibit 10.1 includes the signed Notice of Inquiry form from Platteville. No response was received from others. If response is received after submission of the Application, Thornton will provide the response to Weld County. Thornton's requests are included in Exhibits 10.2a and 1O.2b through 1O.7.a and 10.7b. Exhibit 10.8 includes the map that was provided with each request. TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-1 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 '86' Notice of Inquiry q rY Weld County L r0jNit Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Platteville CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov_com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The above person Intergovernmental o met with County Agreement/Coordinated , Planning staff about developing a parcel of land inside your designated Planning Agreement Boundary. County Planner's signature Would you like to pursue annexation of this property? NO X YES Date of Contact December 20, 2018 Comments: The Town of Platteville does not have any concerns regarding this USR and is not interested in annexation. t .,� {�) Town Manager December 20, 2018 Signature of Municipality Representative Title Date Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld County Planning Department 1555 N 17th Ave, Greeley, CO 8O631 - (97O) -1-OO-61OO - (97O) 3O4-6/•98 Fax 20181107 L EXHIBIT 10.1 Plattevile Signed Notice of Inquiry TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: Mark Koleber To: ' jljiegerOcityofdacono.com" Cc: jlenrv. bdvIDEN Subject: [EXTERNAL] Thornton Water Project - Weld County Notice of Inquiry Date: Thursday, December 20, 2018 8:59:16 AM Attachments: Darnnn NOT docc Map TWP PA -1 GMA.odf I Jennifer, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application for a portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. Typically, a 50 - foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties adjacent to CR 17 through the city of Dacono's Urban Growth Area. A map showing the TWP PA -1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements . As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Mark.Kolebercityofthornton.net EXHIBIT 10.2a Notice of Inquiry Email Request to Dacono TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-3 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 .:t8','r� Notice Inquiry of Weld County Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Dacono IGA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov.com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The above person Intergovernmental . T- )1CS ` �'\ met with County Planning staff about developing a parcel of land inside your designated Agreement/Coordinated Planning Agreement Boundary. -Qp.k\--- Planner's County signature Would you like to pursue annexation of this property? NO YES Date of Contact Comments: Signature of Municipality Representative Title Date A Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Meld Comm. Planning Department 15:55 N I ;111 Ave, (;n"t'lev, CO son.'i 1 -- () 0) 1lx)-61(X) - (9-O) 30+-fi WS Fax 20181107 EXHIBIT 10.2b Notice of Inquiry Email Request Attachment to Dacono TAA/P USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-4 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: To: Cc: Subject: Date: Attachments: Mark Koleber " tho does ra fo rtl u of o nc o. G o v " }lenrv. 1)&i/DEN [EXTERNAL] Thornton Water Project - Weld County Notice of Inquiry Thursday, December 20, 2018 10:19:19 AM Fort Lupton NOI.docc Mao TWP PA -1 odf Mr. Hodges, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application fora portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. Typically, a 50 - foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties adjacent to CR 17 through the city of Fort Lu pton's Three (3) Mile Area. A map showing the TWP PA - 1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements .As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Mark.Koleber(acityofthornton.net EXHIBIT 10.3a Notice of Inquiry Email Request to Fort Lupton TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-5 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 `\'36''~ Notice of Inquiry Weld County Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Fort Lupton IGA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov corn Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The above person met with County Intergovernmental Agreement/Coordinated Planning staff about developing a parcel of land inside your designated Planning Agreement Boundary N County Planner's signature Would you like to pursue annexation of this property? NO YES Date of Contact Comments Signature of Municipality Representative Title Date ans Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. 1555 N 17th Weld County Planning Department Ave, Greeley, CO 80631 -- (970) 41(x)-61OO - (970) 304-6498 Fax 20181107 EXHIBIT 10.3b Notice of Inquiry Email Request Attachment to Fort Lupton TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: Mark Koleber To: "jsimmonsCalfr edehckco .goy" Cc: Henry. Jody/DEN Subject: [EXTERNAL] Thornton Water Project - Weld County Notice of Inquiry Date: Thursday, December 20, 2018 10:48:55 AM Attachments: Mao TWP PA-1.odf Frederick NOl.docx Ms. Simmons, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application for a portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in unincorporated Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168t Avenue. Typically, a 50 -foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties I adjacent to CR 17 through the town of Frederick's Urban Growth Area. A map showing the TWP PA - 1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements . As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Mark.Koleberfacityofthornton.net EXHIBIT 10.4a Notice of Inquiry Email Request to Frederick TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-7 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 iik Al Ni.-_-__86_14:..." 86 Notice of Inquiry weld County Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Frederick CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov.com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The Intergovernmental above person met with County Planning staff about developing a parcel of land inside your designated Agreement/Coordinated Planning Agreement Boundary. nrcac in ,I914L County Planner's signature Would you like to pursue annexation of this property? NO YES Date of Contact Comments: D Signature of Municipality Representative Title Date Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld County Planning Department 1555 N 17111 A' e, (;ree lev, CO noti:f I - (970) UX)-G I (x) - (970) 301-6498 Fax 20181107 EXHIBIT 10.4b Notice of Inquiry Email Request Attachment to Frederick TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: To: Cc: Subject: Date: Attachments: Mark Koleber "mostholthoff@firestoneCO.gov" "olannina@firestoneco,aov"; "dlindsav@ccainc.us"; Henry. Jody/DEN [EXTERNAL] Thornton Water Project - Weld County Notice of Inquiry Thursday, December 20, 2018 11:01:54 AM Mao TWP PA-1.odf Firestone NOI.docx Mr. Ostholthoff, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application for a portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. Typically, a 50 - foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties adjacent to CR 17 through the town of Firestone's Three (3) Mile Area. A map showing the TWP PA - 1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements . As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Mark.KoleberCWcityofthornton.net EXHIBIT 10.5a Notice of Inquiry Email Request to Firestone TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-9 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 '�f". _, -r Notice of Inquiry' I';' — r• Weld County Y it Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Firestone CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst©weldgov.com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The Intergovernmental above person met with County Agreement/Coordinated ancaal-k-AVAC\--k---- I Planning staff about developing a parcel of land inside your designated Planning Agreement Boundary. County s signature nature Would you like to pursue annexation of this property? NO YES Date of Contact Comments: Signature of Municipality Representative Title Date Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Veld I is i N 1 tl1 Aye, Greeley, County Planning Department CO Sues 1 - (inn) 4OO-6I 00- (970) 30.1-6498 Fa 20181107 EXHIBIT 10.5b Notice of Inquiry Email Request Attachment to Firestone TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-10 Notice of Inqui Weld County ry Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Firestone CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Legal Description Parcel Number Nearest Intersection Daungst@weldgov.com Multiple Multiple Type of Inquiry Water pipeline MC. . The above person met with County Planning staff about developing a parcel of land inside your designated Intergovernmental Agreement/Coordinated Planning Agreement Boundary. County Planner's signature 0 i Would you like to pursue annexation of this property? NO YES Date of Contact 12(20/201•95 Comments: The Town of Firestone would like to discuss the annexation of unannexed road right-of-ways within our planning are that the proposed pipeline will be located within. t � St . t ti z Town of Firestone Planning Mana er January 8, 2019 Date Signature of Municipalityepresentative Title Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld County Harming Department. 1555 N 17th Ave, Greeley, CO 8O631 (970) 400-6100 (970) 304-6498 Fax 20181107 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: Mark Koleber To: "trenkenenlattevilIegov.orfl" Cc: Henry. bdv/DEN Subject: [EXTERNAL] Thombon Water Project - Weld County Notice of Inquiry Date: Thursday, December 20, 2018 9:07:32 AM Attachments: Mao TWP PA -1 odf Platteville NOI.dion Mr. Renken, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application fora portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168tr Avenue. Typically, a 50 - foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties adjacent to CR 17 through the town of Platteville's Three (3) Mile Area. A map showing the TWP PA - 1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements . As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Marc.Ko eberOcityofthornton.net EXHIBIT 10.6a Notice of Inquiry Email Request to Platteville TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-11 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 '�6 N Notice Inquiry of Weld County • - .1: . Pre -application Case # PRE16-0083 Date of Inquiry 12/19/2018 Municipality Platteville CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov.com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The above Intergovernmental person met with County Planning staff about developing a parcel of land inside your designated Agreement/Coordinated Planning Agreement Boundary. vtr-N -aat-RA Ni.,4*, County Planner's signature Would you like to pursue annexation of this property? NO YES Date of Contact Comments: Signature of Municipality Representative Title Date Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld County Planning Department 1555 N 17th Ave, Greeley, CO sn(33 t - (970) •1400-0 io) -- (970) 301-014)A Fax 20181107 EXHIBIT 10.6b Notice of Inquiry Email Request Attachment to Platteville TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-12 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 From: To: Cc: Subject: Date: Attachments: Mark Koleber "cke nnedv (a towno frrea d .org" Henry. bdv/DEN [EXTERNAL] Thornton Water Project - Weld County Notice of Inquiry Thursday, December 20, 2018 10:49:37 AM Mao TWP PA-1.odf Mead NOl.door Mr. Kennedy, The city of Thornton (Thornton) is currently developing a Weld County Use by Special Review (USR) permit application for a portion of the Thornton Water Project (TWP) designated as TWP Weld County Permit Application Segment 1 (PA -1), which includes up to approximately 13.3 miles of buried 48 -inch domestic water transmission pipeline and associated appurtenances in unincorporated Weld County. Thornton plans on submitting this application soon. The domestic water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. Typically, a 50 -foot permanent easement for the domestic water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. As requested by Weld County, Thornton is contacting municipalities regarding Thornton's USR permit application, and specifically to construct a 48 -inch domestic water pipeline on properties adjacent to CR 17 through the town of Mead's Three (3) Mile Area. A map showing the TWP PA -1 route is attached. Per Weld County Code, Weld County is required to notify affected jurisdictions as indicated in Intergovernmental Agreements . As requested by Weld County, Thornton is providing the attached Notice of Inquiry form. Please review and sign the attached form and return it to me, and I'll provide it to Weld County. Please let me know if you have any questions. Thanks Mark Koleber Thornton Water Project Director City of Thornton 12450 Washington St. Thornton, Colorado 80241-2405 303-255-7790 Mark.Ko eberOcityofthornton.net EXHIBIT 10.7a Notice of Inquiry Email Request to Mead TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-13 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 '�" Notice of Inquiry Weld County Pre -application Case # PRE16-O083 Date of Inquiry 12/19/2018 Municipality Mead CPA Name of Person Inquiring Mark Koleber, Thornton Water Project Director Property Owner Multiple Planner Diana Aungst Planner Phone Number 970-400-3524 Planner Email Address Daungst@weldgov.com Legal Description Multiple Parcel Number Multiple Nearest Intersection Type of Inquiry Water pipeline The above person met with County Intergovernmental Agreement/Coordinated ‘11) kcjicaCb-UN Planning staff about developing a parcel of land inside your designated Planning Agreement Boundary VV - County Planner's signature nature Would you like to pursue annexation of this property? NO YES Date of Contact Comments: Signature of Municipality Representative Title Date Please sign and date to acknowledge that the applicant has contacted you and return this signed form to Weld County Department of Planning Services. Weld 1:155 N 17th Aye, Greeley, County Planning Department CO soa s I - (970) KE-ti 1 cx) - (970) ao h-ti.f9R Fax 20181107 EXHIBIT 10.7b Notice of Inquiry Email Request Attachment to Mead TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-14 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Thornton Water Project TAP PA -1 Route Map (...(4Ther.o!ors atto ADAMS MI \~- CRU u n • FIRESTONE_,— CR K \ i FREDERICK ,:n t. DACONO 'eet I A`.t c+ N CITY OF THORNTON COLORADO '24501.ASwNGTp: ST ThO WTOM CO .32411-2406 flPFii.HL- at ca+;T t $AStt t.! d' 1.1"Pti cc ,:4t � J 5 \:Rte CRP CR is 4r fir Cit 12 rws I _1oa4i i ZS tentimt na:: P j t J7L!- SJIGRTON 8y5.g'. MIL* $. S 0 0.9 12 Sri +2J :640! I ash - iSw w, ACGJV.., t2 �ULCr -a AT MT�'f.•T'IOMN, KdS1a� a�.a TWP PA -1 Rouse to - Unncorpasted Wald Cann and Road Righto1-Wet We, TP PA.1 Raub - Unncorpaatd W 41d Canto TAP PA 1 Rode uutide 86.8 Unmet cored Wad Cast) ---- Raboad — RomoStean�udiDac+ fluor* ,.i :tIX l71 I ' i rr+ar, W4wVc, .GYM GnA1 f, I. n Wes. w.: -l•► .[R -_l. t.91 EXHIBIT 10.8 Notice of Inquiry Email Request Attachment for All Requests TWP USR PA -1 SECTION 10 NOTICE OF INQUIRY 10-15 Section 11 Drainage Report This section addresses WCC Section 23-2-510 C.2.c, USR Procedural Guide Checklist, and the USR Questionnaire, Engineering Question 6 and the criteria described in WCC Sections 23-2-480 A.4, 23-2-480 A.5, 23-2-480 A.8, 23-2-490 D, 23-2-490 E, and 23-2-490 H. As discussed during the Pre -Application meetings with Weld County staff on May 25, 2016 and on August 25, 2016 and as indicated in Memorandum Pre -Application Meeting prior to submitting USR for water transmission lines (PRE16-0083; Case File, pre -application) provided by Weld County staff dated August 25, 2016, submission of a drainage report for a water pipeline project is not required. The water pipeline itself will meet Weld County's pipeline exception. Information provided in this attachment presents a description of existing conditions and proposed mitigation measures that could be used for stormwater drainage and erosion control. TWP PA -1 and Existing Site Drainage The TWP PA -1 within unincorporated Weld County spans three 10 -digit hydrologic unit code (HUC) watersheds, as shown in Figure C.2.c-3.1, Drainage and Erosion Control. Generalized flow directions for stormwater are described based on a review of coarse topography (10 -foot elevation contour intervals). While the descriptions provided are generally accurate, it is possible that local flow directions may vary slightly from those described herein, due to minor localized variations in finer topography (e.g. undulations) along the TWP PA -1. In the northern most reach the TWP PA -1 is in the HUC 1019000507 watershed, Boulder Creek -Saint Vrain Creek Basin from just north of Saint Vrain Creek to approximately % mile north of Highway 52. North of Highway 66 land generally drains in a southeasterly direction toward St. Vrain Creek, as shown in Figure C.2.c-3.1. St. Vrain Creek generally drains from the south/southwest to the north/northeast as it crosses the TWP PA -1 near Highway 66. South of St. Vrain Creek, from Highway 66 to County Road 24 topography generally drains to the north. Beginning at a point approximately 1/2 mile south of County Road 24, flow direction changes due to topography. From this point south of County Road 24, to approximately County Road 18, land drains across the TWP PA -1 from east to west. Along the TWP PA -1, from County Road 18 to a local high point approximately % mile north of Highway 52, land drains from southeast to northwest and then from south to north. From the local high point to approximately % mile south of County Road 10, the TWP PA -1 encroaches into the 1019000306 watershed, Little Dry Creek -South Platte River Basin. Topography generally drains from northwest to southeast and from north to south to Little Dry Creek. Little Dry Creek flows from west to east as it crosses the TWP PA -1. Immediately south of Little Dry Creek, land drains north toward Little Dry Creek. Approximately 1/4 mile south of Little Dry Creek, the TWP PA -1 crosses a localized ridge. Along this ridge, land generally drains from west to east across the TWP PA -1. As the pipeline alignment traverses the ridge, it enters the 1019000304 watershed, Big Dry Creek - South Platte River Basin. Land flow direction changes near County Road 8 and generally drains from the northwest to the southeast, toward Big Dry Creek. Immediately south of Big Dry Creek, land TWP USR PA -1 SECTION 11 DRAINAGE REPORT Thornton Water Project LINNIA AVE ON MON7 j) tt i 160TH AVE MEAD BROOMFIELD fl Thornton FIRESTONE DACONO 'Iz 'I ES1ONE HO ELM St RINE CONE AVE MC: CLuRE AVE SI 5; .1115' 52 \ 1%; NORTH GLENN bRN•TONf - •THH CITY OF THORNTON COLORADO '2450 WASHINGTON ST THORNTON. CO 80241 2405 0 12 GRAND AV CR 22 .) CR2 1019000306 Little.Dry Creek -South Platte River Basin 1 1019000304 Big Dry Creek -South Platte River Basin • - it eh/ ('unitiv -!dam., C•unhro•_ v TWP PA-' Route in Unincorporated Weld County and Current or Future Road R.gnt-d-Way TWP PA -1 Route n Unincorporated Weld County TWPPA-' Route outside Unincorporated Weld County Miles —••— County Boundary S _ Stream/R ver/CanalO.tcn lake/Reservor 1:7.2HUC '0 Boundary Ora nage Flow Direction 100ft Contour 20ft Contour 97115 - 97HSt 77H S7 It Z . z BRIDGES T BUSII St Figure C.2.c-3.1 Drainage and Erosion Control .9111 Gi 1220/2018 7-O4,r C'. NC •••, XA •' $C"1A54 CM.Y. fd'ol 4Nlt.\CGt5WA 1 inch = 1.2 miles Railroad SVK-1 4fl OAfE sionrcnokbp-AA AGE PAO :ROSH Costly. I&C 451'CS1 •I •0 •I31'30 AY 5ows.% •-J. ,SGS.C]Ma w..1 G:m COOT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 drains from south to north towards Big Dry Creek across the TWP PA -1. Big Dry Creek generally flows from southwest to northeast as it crosses the TWP PA -1. Construction Water Quality Management Development of the TWP PA -1 considered water pipeline construction locations that minimize impacts to historical surface and subsurface water flows. Water pipeline crossings of jurisdictional waters, including wetlands, will be constructed utilizing trenchless construction methods. Prior to construction, Thornton and/or the TWP PA -1 contractors will obtain the required Weld County grading permit and Stormwater Discharge Associated with Construction Activity - General Permits from CDPHE. Construction SWMPs will be developed under the general permit to protect the quality of stormwater runoff during construction in accordance with the Construction Stormwater Discharge Permit requirements. The SWMP(s) will detail the potential pollutants to stormwater anticipated to be associated with construction, and the associated construction stormwater best management practices (BMPs) to be implemented to protect the quality of stormwater runoff from the TWP PA -1 areas during construction. The SWMP will describe the inspection and maintenance procedures implemented on the site to maintain erosion and sediment control practices. Site inspections will be conducted to meet the requirements and schedules stipulated under the permits. Construction wastewater associated with the potential dewatering of trenches will be handled in accordance with CDPHE permit discharge requirements. Prior to construction, Thornton and/or the TWP PA -1 contractors will obtain a General Permit for Construction Dewatering Activities from CDPHE and specify the management measures to capture and manage any generated discharge. The TWP PA -1 will be hydrostatically tested prior to operation start up. Before discharge of hydrostatic test water from the water pipeline, Thornton and/or the TWP PA -1 contractor will obtain a General Permit for Discharges from Hydrostatic Testing of Pipelines, Tanks, and Similar Vessels from CDPHE. Sampling and effluent limits will be in accordance with permit requirements. Construction BMPs Appropriate criteria manuals and standards will be used for the development of the SWMPs and selection of BMPs. Manuals may include the Urban Storm Drainage Criteria Manual (USDCM) Volume 3 (Urban Drainage and Flood Control District, 2010, November), City of Greeley's BMPs for Utility Planning and Construction Through Rural, Wetland, and Riparian Lands (Leonard Rice Engineers, Inc., 2008, August), and/or other state and local guidance documents. Example descriptions of common construction BMPs that could be used on the project are provided for reference in Table C.2.c-3.1, Table C.2.c-3.2, Table C.2.c-3.3, Table C.2.c-3.4, Table C.2.c-3.5, and Table C.2.c-3.6. BMPs will also be deployed for construction dewatering activities, pursuant to the Construction Stormwater Discharge Permit and/or the Construction Dewatering Discharge Permit as appropriate for the site conditions and soil erodibility, to protect the quality of stormwater, surface water, and groundwater in the TWP PA -1. See Attachment C.2.c-5 for descriptions of groundwater protection practices that could be used during construction. BMPs will be implemented under the SWMP to minimize or mitigate soil erosion and revegetate disturbed areas. Soil erodibility along the TWP PA -1 is shown in Figure C.2.c-3.2. The soil erodibility figure shows the NRCS K factor values. K factor values represent the susceptibility of soil erosion, transportability of the sediment, and the amount and rate of runoff given a particular rainfall event. TWP USR PA -1 SECTION 11 DRAINAGE REPORT : 13 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.1 Example Structural Control Measures SWMP(s) may include these and/or other construction BMPs Possible Control Measure Potential Location(s) Description of Control Measure Silt Fencing Along the perimeter of the excavation sites, corridor, and disturbed areas. Wattles Along the downhill perimeter of the disturbed sites. Straw Bales Erosion Control Blankets Inlet Protection Earth Dikes/ Berms Check Dams Installed around areas requiring protection, such as wetlands, to form a temporary containment. In areas requiring protection of exposed soil and/or additional stabilization. Around inlets to the storm sewer system. In areas where stormwater flow needs to be diverted around a potential contaminant source. Typically where the grade change is more than 2 percent. Vehicle Tracking At entrances and exits into and Control out of the construction site. Temporary Swales In low areas and at site boundaries, as appropriate. Protects streams or wetland areas, reduces sediment transport, and keeps sediment onsite. Silt fencing consists of posts with filter fabric stretched across the posts. The bottom end of the fence is vertically trenched and covered with backfill. This prevents water from passing by the fence without being filtered. The fabric allows for the water to pass offsite while retaining the sediment onsite. Used to form a barrier or redirect water, and made of straw. Wattles work much like silt fencing and may be used instead of silt fencing. Used to form a barrier or redirect water. Straw bales are often used in ditch check dams or as inlet protection rather than linear BMPs. The bales impede stormwater flow. Unlike silt fence, straw bales do not allow water to flow through freely, thus they are used where detention, not just filtration, is necessary. Protects disturbed soil areas to minimize erosion and soil transport. Traps sediment with filtering material placed around an inlet to a receiving stream. It can be composed of gravel, stone with a wire mesh filter, concrete blocks and gravel, or straw bales. Diverts storm water flow around or away from areas where soils are disturbed or stockpiled, or the location of potential contaminants, to minimize contact of the stormwater with those pollutant sources of concern. Slows the speed of the flow. A check dam is a small, temporary dam constructed across a drainage ditch or channel. The reduced runoff speed may result in less erosion and gullying in the channel and allow the sediment to settle out. The check dams can be built with materials such as straw bales, rock, timber, or other material that may retain/slow water flow. Reduces tracking of soil off the site. Entrance and exit points are constructed of a riprap layer on top of filter fabric. The intent is for the mud and sediments on vehicle tires to adhere to the rough surface of the rocks/cobbles. Provides a preferential pathway for water flow to prevent erosion and provide a location for accumulation of sediment and debris. TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-4 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.1 Example Structural Control Measures SWMP(s) may include these and/or other construction BMPs Possible Control Measure Potential Location(s) Description of Control Measure Concrete Washout In Contractor Staging Area or other approved location. Provides a designated location and containment to washout concrete trucks. Washout areas are depressed impoundments or fabricated structures. Water used to wash out concrete trucks is contained within the depressed area. The wash water usually has a high pH, which, if released, can affect the quality of runoff. The wash water may be pumped out of the depressed area for proper disposal off -site. Hardened concrete is also periodically removed and disposed of properly. Limit Number of Designated construction site Reduces tracking of soil off site. Typically implemented with Entrances/Exits entrances/exits. vehicle tracking control. TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-5 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.2 Example Stabilization Control Measures SWMP(s) may include these and/or other stabilization practices. Possible Control Measure Potential Location(s) Description of Stabilization Practice Temporary Seeding On appropriate disturbed areas if construction is complete or suspended for an extended period of time, but prior to the entire site being permanently reseeded. Permanent Seeding On appropriate disturbed areas once construction is complete. Sod Stabilization On appropriate areas where rapid stabilization and protection of disturbed ground surface is desirable and/or where it will be difficult to reseed the area. Mulching On slopes steeper than 2:1 or on areas that have been seeded. Vegetative Buffer Strips As appropriate and where feasible, retain or install between large areas of disturbed soil or pavements. Furrow -Contour On side hill slopes of exposed soil. Side Hill Slopes Geotextiles On appropriate disturbed areas or slopes. Provides stabilization of the soil and reduces erosion. Provides stabilization of the soil and reduces erosion. Provides stabilization of the soil and reduces erosion and protects water quality. Provides soil stabilization or erosion control where materials such as grass wood chips, hay, etc. are placed on the soil surface to protect disturbed soil areas and/or establish seeded areas. Intercepts and slows sheet flow moving across disturbed or paved areas. Improves water quality, reduces erosion potential, and assists in retaining sediment onsite. Minimizes wind and water erosion, provides a microclimate of wind protection for new plants, and helps conserve precipitation for use in growth of new seed, which reduces sediment erosion. Provides coverage and stabilization of disturbed soils and slopes to reduce erosion potential. TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.3 Example Materials Handling Control Measures for Construction Sites SWMP(s) may include these or other materials handling control measures. Possible Control Measure Description of Control Measure Good Housekeeping Provision of Trash Receptacles Trash Removal Safety Data Sheets (SDSs) Materials Inventory Materials Storage Vehicle Fueling and Maintenance Containment Implement general good housekeeping at the construction site. Keep the site free, as much as practicable, from trash, spilled fuels or oils, and miscellaneous construction debris Provide trash receptacles (i.e., dumpsters or garbage cans) for daily domestic -type trash and garbage. Use sturdy receptacles placed in areas where they are unlikely to be knocked or blown over. Empty receptacles on a regular basis. Remove domestic -type garbage from trash receptacles, construction or materials packaging, and other general trash and debris from the site on a regular basis. Make SDSs available for review and use for substances used or stored on the construction site. Maintain an inventory of materials stored onsite Provide proper storage and containment for chemicals, fuels, oil, and any other products requiring storage/containment. Limit areas where fueling and maintenance occur, and perform away from storm inlets and waterways. Provide spill kits and clean up/dispose of the spill and cleanup materials properly. Prepare a spill control and secondary containment plan for fuel storage. TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-7 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.4 Example BMP Maintenance Guidelines SWMP(s) may reference/include these and/ or other inspection and maintenance guidelines. SILT FENCE Is the fence damaged, collapsed, un-entrenched, or ineffective? Has sediment been removed from behind the fence? Is the silt fence properly positioned? STRAW BALE BARRIER Are the straw bales damaged, ineffective, or un-entrenched? Has sediment been removed from behind the bales? Are the bales installed and positioned correctly? EROSION CONTROL BLANKET Is fabric damaged, loose, or in need of repair? INLET PROTECTION Is the inlet protection damaged, ineffective, or in need of repair? Has sediment been removed? EARTH DIKES/BERMS Are dikes or berms in good condition, without gaps or damaged areas? Are dikes or berms installed in areas of soil stockpiles? CHECK DAM Has accumulated sediment and debris been removed from behind the dam? Have the removed materials been disposed of properly? TEMPORARY SWALES Has any sediment or debris been deposited within the swales? Have the slopes of the swale eroded or has damage occurred to the lining? SURFACE ROUGHENING Are there any vehicle tracks evident on roughened slopes? Is there any evidence of erosion? VEHICLE TRACKING AT ENTRANCE/EXITS Is the gravel surface clogged with mud or sediment? Is the gravel surface sinking into the ground? Has sediment been tracked onto public roads; if so, has it been cleaned up? CONCRETE WASHOUT STRUCTURE Is structure more than two-thirds full? Is the structure performing properly? Is liner in adequate condition? PERMANENT SEEDING Are the seedbeds protected by mulch? Has any erosion occurred in the seeded area? Is there any evidence of vehicle tracking on seeded areas? TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.4 Example BMP Maintenance Guidelines SWMP(s) may reference/include these and/or other inspection and maintenance guidelines. SOD STABILIZATION Is sod properly installed? Are there gaps or areas of exposed soil between sod sheets? Is sod stressed or dead? MULCHING Is mulch distributed uniformly on all disturbed areas? Is there any evidence of mulch being blown or washed away? Has the mulched area been seeded? VEGETATIVE BUFFER STRIPS Are vegetative buffer strips installed or maintained? Are areas of vegetative buffer strips appropriately protected or designated to minimize damage? Are vegetative buffer strips covered or filled with debris or sediment? FURROW CONTOURING Is furrow contouring implemented on final slopes, as practicable? Is erosion visible cross -cutting furrow contours? GEOTEXTILES Is fabric damaged, loose, or in need of repair? TABLE C.2.c-3.5 Example Groundwater BMPs Possible Control Measure Description of Control Measure Trench Plug Mitigates a decline in groundwater levels due to draining of groundwater through the pipeline bedding material. Install periodically along and perpendicular to the pipeline at locations determined by designer. Draining Mechanism Mitigates groundwater rising due to pipeline installation. Bedding Allows for increased water flow through the pipe zone to account for the impervious area caused by the pipe. Groundwater Disposal Disposal in accordance with CDPHE regulations and the requirements of the construction dewatering permits. Temporary retention ponds, land application, and routing to storm drains are options for groundwater disposal. Reduction in Impervious Materials Minimizes impervious materials to maximize groundwater recharge TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-9 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-3.6 Example Other Areas or Procedures BMPs Possible Control Measure Description of Control Measure Bentonite Containment/Disposal Appropriate Backfill Technique Street Sweeping Includes proper pit containment and removal/disposal once operations are complete or as necessary. Bentonite associated with trenchless installation methods may present a potential site pollutant. Minimizes the effects of subsurface drainage. BMPs such as appropriate trench materials, compaction techniques, and proper compaction with the correct equipment can be utilized. Reduces the potential of sediment transport and tracking. Sweeping operations involve scraping and/or sweeping large quantities of sediment from pavement, via hand or mechanical means, to remove as much deposited sediment as possible. Streets within and immediately surrounding a construction site would be cleaned of earth material when sediment has been deposited on the roadway and is being tracked off site. Scraped or swept material would not be deposited in the storm sewer. Sweeping and vacuuming may not be effective when soil is wet or muddy. TWP USR PA -1 SECTION 11 DRAINAGE REPORT 11-10 Thornton Water Project INNIA MONT JR205 cq Thornton PLATTEVILLE' FIRESTONE SC FIRES`TON5 ,- DR x ELM ST SAGE Ave Z MAPLE PINE CONE AVE rr � 1FREDERICK DACONO NORTHGLENN CITY OF THORNTON COLORADO '2450 WASHINGTON ST THORNTON, CO 80241 2405 12/20/2018 ' mcn = 1 2 miles ac RWt irif. um; Wain% ( uu?I1T' TWP PA-* Route In Un•ncorporated Weld County - and Current or Future Road Right -of -Way TWPPA-1 Route in - Unincorporated Weld County TWP F. 1 Route outside Unincorporated Weld County Miles —• County Boundary Ra.lroed CR 32 50 7 CR30.5 FORT LUPT.N ( BRIGHTON, — R.ver/St'earrvCanallD tcn LaKe/Reserw;r Soil Erodibility (K Factor) No Va.re Low (<0 20) Medium (0 20 0 40) Hign (>0 40) S" ST BRIDGE ST Figure C.2.c-3.2 Soil Erodibility THORN ION WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Approximately 70% of the TWP PA -1 is located within the low -to -medium soil erodibility range. A low -to -medium soil erodibility factor indicates that slight to moderate erosion is likely and that erosion -control measures may be needed. Approximately 30% of the TWP PA -1 is located within the high soil erodibility range. High soil erodibility indicates that erosion is very likely and that erosion - control measures are advised, including revegetation of bare areas. Disturbed areas will be restored to pre -construction grades and revegetated after construction. Certified weed -free seed mix consisting of drought -tolerant native grasses will be specified as appropriate in the SWMP for the revegetation of disturbed areas to meet property owner and regulatory requirements. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. BMPs will be maintained and inspected. Failed BMPs will be replaced as required. After work is complete and final stabilization has been achieved, temporary BMPs will be removed. Final stabilization will be reached as defined in the Weld County Grading Permit and Stormwater Discharge Associated with Construction Activity - General Permit. Water pipeline crossings of jurisdictional waters, including wetlands, will be constructed using trenchless construction methods. Irrigation ditches will be crossed using trenchless construction methods as required by ditch owner. Existing ditches, streams, and natural drainages will be preserved and no permanent effects on area drainage are anticipated. Within urbanized areas subject to National Pollutant Discharge Elimination System (NPDES) and Colorado Discharge Permit System (CDPS) municipal separate storm sewer system (MS4) regulations, project components will be designed to comply with applicable requirements of the local MS4. Weld County staff indicated in the Pre -Application meetings that the TWP PA -1 is located within the boundaries of MS4 permitted areas in Weld County. TWP PA -1 designers will coordinate with Weld County Public Works staff during the design phase so that requirements are indicated in the construction documents as appropriate. The TWP PA -1 designers will reference appropriate technical manuals at the time of development of the SWMPs, and select and indicate appropriate locations for BMPs. Example descriptions of common construction BMPs that could be used during construction are provided for reference purposes below. These lists are not all inclusive. Items listed below, and/or other construction BMPs, will be selected as appropriate during design. Post -Construction Stormwater Runoff The TWP PA -1 will be restored following construction to pre -construction grades and vegetation conditions as appropriate with few exceptions. An example of an exception would be minor grading necessary following construction to restore a stable slope. In general, following TWP PA -1 construction, the restored TWP PA -1 site will drain in the same manner and at generally the same rate as it did before construction. To mitigate impacts caused by erosion, restoration activities for the TWP PA -1 will consist of vegetation restoration and maintenance of areas disturbed by the TWP PA -1. Effects to vegetation along the easement areas will be temporary and mostly associated with construction. Potential future repairs and maintenance could affect discrete areas of vegetation so that the water pipeline and appurtenances may be accessed in a particular location. Any vegetated areas disturbed during maintenance or any required repairs will be restored by the methods used during construction. TWP USR PA -1 SECTION 11 DRAINAGE REPORT Section 12 Traffic Study This section addresses WCC Section 23-2-510 C.2.c, 23-2-510 C.2.k, and 23-2-510 C.2.I, USR Procedural Guide Checklist, and the USR Questionnaire, Engineering Questions 1 through 5, and the criteria described in WCC Sections 23-2-480 A.2, 23-2-480 A.5, 23-2-490 B, and 23-2-490 E. Guidance from Weld County Public Works staff indicated that a traffic study was not required and that general information in the form of a traffic narrative would meet the USR permit application requirements and that an Improvements Agreement will be required for the construction of the TWP. General Transportation Information The TWP PA -1 preferred route, shown in Figure C.2.c-7.1, has been developed based on information obtained from surveys, easement holders, and property owner discussions. The TWP PA -1 generally runs in a north/south direction paralleling County Road 17 and extends for approximately 13.3 miles in unincorporated Weld County from just north of the Saint Vrain Creek to 168' Avenue. Portions of the TWP PA -1 include approximately 2.8 miles in incorporated areas of Platteville, Firestone, Frederick, and Dacono including roads that have been annexed by local governments. The TWP PA -1 transitions from one side of the road to the other at multiple locations to minimize impacts to property owners, existing structures, including buildings, irrigation ditches, oil and gas facilities, other utilities, and other infrastructure. The existing road network has adequate capacity to serve anticipated construction traffic needs, and no new roads or improvements to existing roads are anticipated to be necessary in unincorporated Weld County. After construction, the water pipeline and appurtenances could operate year-round, 24 hours a day; however, the water pipeline and appurtenances will be unmanned. The existing road network has adequate capacity to serve anticipated TWP PA -1 operation traffic needs. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. Thornton understands that, if the TWP PA -1 is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. To accommodate property owner preferences and to minimize impacts to property owners, the water pipeline is proposed to be located in Weld County future ROW at one location and in Weld County ROW at three locations. Other local governments have variously indicated preferences for the water pipeline to be inside or outside of ROW in their GMA; however, Weld County's preference in unincorporated Weld County takes precedence. Thornton reviewed GMA boundaries and transportation master plans for Dacono, Frederick, and Firestone, and coordinated with these local governments to determine the extent of future ROW within GMA boundaries. Thornton will coordinate the location of the water pipeline with these municipalities and Weld County as appropriate. TWP USR PA 1 SECTION 12 TRAFFIC STUDY Thornton Water Project ZINNIA AVE n rr ::k 56 NGMONT) I J JR205 I W 2 < CR145 ADAMS AVE FIRES( ONE �- jH DR gr. CR 8.75 ERIE-RnyV CR6 ERIE , TI 160TH AVE Ma Lake/Reservoir os CA CA 2 7 Thornton DACON BROOMFIELD NORTHGLENN THORNTON CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 80241-2405 0 S 0.6 I:IRESTONE BD c ELM ST MAPLE PINECONE AVE 1.2 12120/2018 1 inch = 1.2 miles Mlles I-. U w W TWP PA -1 Route in Unincorporated Weld Ccunty 41.1 and Current or Future Road Right -d -Way TWP PA -1 Route in Unincorporated Weld County TWP PA.1 Route outside i i S F Unincorporated Weld County ---- Railroad — Rrver/Strearn/Canal/Oitch LATTEVILLE t68TH AVE CRla5 FO'TLUPTON l d 6 V BRIGHTON 9TH ST a W 2 W CR8 ?.ZSELINE RD Figure C.2.c-7.1 TWP PA -1 Route .7,DGE. ST G A1 NG91'EHN,•+a01fV WA4[_04OFR _sti PERYirlM1G,G6WAPFli.EE•WE_J_SafSO,Mk-YApssEG110NF,IWAAAi RGNTE YID I,EWPOSt • a•Niii •!4045 PN Sanau Mn0 COF14 aim C am_C➢Ot 12 2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Table C.2.c-7.1 presents the multiple roads that the TWP PA -1 route parallels, intersects, or where it is proposed to be located in Weld County ROW and the Annual Average Daily Traffic (AADT) of those roads. The basis for the AADT data was developed using the Weld County Traffic Volumes Map in the Weld County 2035 Transportation Plan, (Weld County, 2011) and the Road Functional Classifications & Highway User Tax Fund (HUTF) GIS data provided on the Weld County website, (Weld County, 2017); City of Dacono Transportation Plan, (Felsburg Holt & Ullevig, 2003); City of Dacono Field Inventory, Regional Transportation and Drainage Impact Fee Analysis, (Trait & Associates, 2014); Frederick 2015 Comprehensive Plan (town of Frederick); Firestone Master Plan, (town of Firestone, 2013); and the Online Transportation Information System, (Colorado Department of Transportation) as applicable. TABLE C.2.c-7.1 Roadway Classifications and AADT Roadway Limits Classification AADT Impact County Road 2/168th Avenue County Road 17 Future ROW County Road 17 County Road 17 County Road 4 County Road 6 County Road 17 County Road 17 County Road 8 County Road 17 County Road 17 County Road 10 At County Road 17.5 Paved, Arterial Service County Road 2 to N/A 2,510 feet north of County Road 2 2,510 feet north of County Road 2 to 2,760 feet north of County Road 2 2,760 feet north of County Road 2 to 130 feet south of County Road 6 At County Road 17 At County Road 17 130 feet south of County Road 6 to 1,300 feet north of County Road 6 1,300 feet north of County Road 6 to 650 feet north of County Road 8 At County Road 17 650 feet north of County Road 8 to 950 feet north of County Road 8 950 feet north of County Road 8 to County Road 12 Gravel, Local Service Gravel, Local Service Gravel, Local Service Paved, Collector Gravel, Local Service Gravel, Local Service Gravel, Local Service Gravel, Local Service Gravel, Local Service At County Road 17 Gravel, Local Service 0-200 1501-10000 Intersects TWP PA -1 N/A TWP PA -1 proposed in future ROW' for 2,510 feet 0-200 TWP PA -1 proposed in ROW for 250 feet 0-200 Is parallel to TWP PA -1 0-200 Intersects TWP PA -1 1001-1500 Intersects TWP PA -1 0-200 0-200 TWP PA -1 proposed in ROW for 1,430 feet Is parallel to TWP PA -1 0-200 Intersects TWP PA -1 0-200 TWP PA -1 proposed in ROW for 300 feet 0-200 Is parallel to TWP PA -1 Intersects TWP PA -1 TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-3 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-7.1 Roadway Classifications and AADT Roadway Limits Classification AADT Impact County Road 12 County Road 17 State Highway 52 County Road 14 County Road 17 County Road 16 County Road 15 to County Road 17 County Road 12 to County Road 14 At County Road 17 At County Road 17 County Road 14 to County Road 16 At County Road 17 County Road 17 County Road 16 to County Road 18 County Road 18 County Road 17 to County Road 19 County Road 20 At County Road 19 County Road 22 County Road 17 County Road 24 At County Road 17 County Road 17 County Road 26 At County Road 17 County Road 17 County Road 28 County Road 15 to County Road 17.5 County Road 22 to County Road 24 County Road 24 to County Road 26 County Road 26 to County Road 28 At County Road 17 Gravel, Local Gravel Rural, within the municipal boundary of Dacono Gravel, Local Gravel (Rural), within the municipal boundary of Dacono Paved, Principal Arterial - Other, owned and maintained by CDOT Gravel, Arterial, within the municipal boundary of Frederick Gravel, Arterial, within the municipal boundary of Frederick Gravel, Arterial, within the municipal boundary of Frederick Gravel, Local Service Gravel, Arterial, within the municipal boundary of Frederick Paved, Collector Gravel, Local Service Gravel, Local Service Paved, Not defined, within the municipal boundary of Firestone Gravel, Not defined, within the municipal boundary of Firestone Gravel, Not defined, within the municipal boundary of Firestone Gravel, Local Service Gravel, Local Services 400 Intersects TWP PA -1 160 Is parallel to TWP PA -1 12,000 Intersects TWP PA -1 Not Available Not available Not Available Intersects TWP PA -1 Is parallel to TWP PA -1 Intersects TWP PA -1 0-200 Is parallel to TWP PA -1 Not Intersects TWP PA -1 Available 501-1000 Intersects TWP PA -1 0-200 Intersects TWP PA -1 0-200 Is parallel to TWP PA -1 Not Intersects TWP PA -1 Available Not Available Not Available Is parallel to TWP PA -1 Intersects TWP PA -1 0-200 TWP PA -1 proposed in ROW 201-501 Intersects TWP PA -1 TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-4 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-7.1 Roadway Classifications and AADT Roadway Limits Classification AADT Impact County Road 17 County Road 28 to Gravel, Local Service N/A TWP PA -1 proposed in State Highway 66 ROW State Highway 66 County Road 13 to County Road 19 Paved, Principal Arterial - Other, owned and maintained by CDOT 9,800 Intersects and is parallel to TWP PA -1 County Road 17 State Highway 66 Paved, Arterial Service 501-1000 Is parallel to TWP PA -1 to County Road 32 Notes: 1. Future ROW based on Weld/Adams County Line Crossroads Alignment Study (Felsburg Holt & Ullevig, 2008 October). 2. Lengths indicated in table are approximate. The TWP PA -1 route will not cross any active railroads. Weld County 2035 Transportation Plan The TWP PA -1 was reviewed in conjunction with the area goals and transportation improvement plans outlined in the Weld County 2035 Transportation Plan, (Weld County, 2011). The Weld County 2035 Transportation Plan identifies multiple short range improvement needs within the TWP PA -1 area. Thornton will coordinate design efforts with Weld County projects to minimize conflicts with future plans. If these improvement projects occur within the timeframe of the construction of the TWP PA -1, Thornton will work with Weld County and other involved parties to coordinate construction and minimize disruption. Short range improvement projects identified in the Weld County 2035 Transportation Plan that overlap the TWP PA -1 include the following: • County Wide Low Volume Road Paving Program • County Wide Recycled Asphalt Program • County Wide Full Depth Program • County Wide Gravel Plan • State Highway 66 Access Control Plan • State Highway 52 Access Control Plan No mid -range or long range transportation improvement projects were identified in the Weld County 2035 Transportation Plan that overlap the TWP PA -1. Weld/Adams County Line Crossroads Alignment Study, (Felsburg Holt & Ullevig, 2008 October) was adopted by the Weld County Board of County Commissioners in November 2008. The study includes conceptually how best to realign County Road 17 and Quebec Street to provide a smooth transition across County Road 2. At the request of the property owner, Thornton requests approval to install approximately %-mile of the water pipeline and fiber optic cable within the future County Road 17 ROW between County Road 2 and County Road 2.5 as indicated in the study. No specific schedule or specific location for the construction of the road realignment improvement is identified. The road construction schedule will be dependent on the growth and development that occurs within the area. TWP USR PA -1 SECTION 12 TRAFFIC STUDY THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Other Considerations Traffic impacts due to construction and post -construction operation of the water pipeline and appurtenances have been considered. Thornton places a high priority on safety during construction. TWP PA -1 contractors will implement traffic management plans based upon local traffic control requirements and general safe operating practices. Any areas impacted during construction will be restored to pre -construction conditions upon completion of the TWP PA -1. Traffic impacts after completion of the construction of the TWP PA -1 are expected to be limited as the water pipeline and appurtenances will be unmanned and operations will require minimal traffic. Therefore, no level -of -service calculations or traffic modeling have been performed; however, the following elements are discussed in this attachment: • Trip Generation • Project Access • Possible Haul, Delivery, and Commuting Routes • Material Storage • Parking and Vehicle Storage • Construction in ROW • Permits Trip Generation During the construction phase of the TWP PA -1, trip generation will be primarily related to construction activities, including delivery of materials and equipment, worker transport, and water pipeline and appurtenances installation. Types of construction vehicles accessing the construction area will likely include those presented in Table C.2.c-7.2. TABLE C.2.c-7.2 Anticipated Construction Vehicles Construction Phase Vehicle Preparing the TWP PA -1 Easements for Construction Pipeline Trenching and Installation Equipment Transport Truck Dump Truck Loader Track Excavator Motor Grader Crew Truck Service Truck Inspection Vehicle Pipe/Material Hauling Truck Equipment Transport Truck Pipe Installation Crew Truck Inspection Truck Concrete Truck Track Excavator Loader Dump Truck Welding Truck TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.c-7.2 Anticipated Construction Vehicles Construction Phase Vehicle Water Truck Backfilling Re-grading/Reseeding Equipment Transport Truck Dump Truck Loader Track Excavator Crew Truck Inspection Truck Concrete Truck Water Truck Compaction Equipment Equipment Transport Truck Motor Grader Reclamation Vehicle Crew Truck Inspection Vehicle Water Truck Construction activities for TWP PA -1 are proposed to begin in 2021 with operation of the TWP system scheduled to begin in 2025 after construction of all TWP packages are complete. Construction of each mile of water pipeline is expected to last between 4 and 10 weeks not including revegetation activities. Trip generation will vary according to the phase and location of construction. On average, five trips per day to the site are expected for each type of construction vehicle: pickup trucks, welding trucks, pipe/material hauling trucks, water trucks, and equipment transport trucks for each construction package. Construction work hours will typically be from 7 a.m. to 7 p.m. Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case basis. For example, some construction activities, such as hydrostatic testing, require 24/7 operation, and shift work may be required. Construction of multiple water pipeline construction packages and trenchless pipeline packages may occur concurrently with multiple crews of 10 to 55 workers each. At the peak of construction, approximately 80 to 100 workers could be required at multiple sites along the TWP PA -1. Post -construction trip generation will be primarily related to the operation and maintenance of the TWP PA -1. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. 1 WP USR PA -1 SECTION 12 TRAFFIC STUDY THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Project Access Access along the TWP PA -1 route will be along roadways, at existing access locations when practicable. Possible existing and new proposed access locations for permanent and temporary use along the water pipeline are identified on Figure C.2.c-7.2. As discussed with Weld County Public Works staff, locations are subject to change based on TWP PA -1 contractors' needs. Thornton will obtain individual Weld County, CDOT, and other municipal access permits for any necessary temporary and permanent access locations as applicable. If access is needed using private roads or drives, Thornton or the TWP PA -1 contractors will negotiate use with owners. Stabilized construction entrances/exits will be installed, as necessary, at access locations from paved roads. Permanent access locations will be designed per Weld County and municipal standards based on location of access. Temporary access will be unpaved and used primarily for transport of materials, equipment, and construction workers. Temporary and permanent access locations will be closed to the public. Temporary access locations could include warning signs, flaggers, and controlled access, as necessary. Additionally, gates or other approved barriers on temporary access roads may be utilized when construction workers are not present to control unauthorized access. Temporary access locations will be restored to pre -construction conditions upon the completion of construction. It is anticipated that access to the TWP PA -1 route will be required along State Highway 66 and 52 and County Roads 2, 10, 12, 17, 18 and 20. Possible Haul, Delivery and Commuting Routes it is anticipated that access to the TWP PA -1 alignment will be required along Interstate 25, Interstate 25 frontage roads, State Highways, County Roads and other local roads. Construction equipment will be transported utilizing semi -tractor and flatbed trailers, or comparable equipment, with gross vehicle weights estimated between 40,000 - 80,000 lbs. Construction personnel are anticipated to utilize 1 -ton pickup trucks and comparable sized vehicles. The expected haul routes include both CDOT highways and Weld County roads. Upon review of the Weld County Restricted Bridge Locations Map, dated August 2012, it was determined that the project area does not incorporate any restricted bridges. Truck haul routes for material deliveries from off -site locations will be chosen to facilitate safe and expedient delivery while minimizing traffic impacts. It is expected that the daily commuting route for construction workers would also follow the same roads as the truck haul routes to the construction site or temporary staging areas for parking. The major roads and highways within Weld County that could be utilized for delivery of construction materials and construction worker trips as part of construction operations are presented in Table C.2.c-7.3. TABLE C.2.c-7.3 Possible Delivery and Commuting Routes County or Major Roads State Highways Federal Highways County Road 2 (168th Ave), County Road 8, State Highway 52, State Highway Interstate 25, Interstate 25 County Road 9, County Road 10, County 66 Northeast Frontage Road Road 17, County Road 18, County Road 19, County Road 20, County Road 24, County Road 26, County Road 28 TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12 S Thornton Water Project ZINNIA AVE ADAMS AVE '--� CR 32 MEAD R18- `r r A FIRESTONE r DACONO ri .r- •ERNE\ L. "i / 3.1 ``••v / : L : N. BRO & MFIELD ill _ NORTHGLENN e° f Q�J 160TH AVE Cr Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 80241 2405 0 S 06 FIRESTONE BO 12 Miles LATTEVILLE CRa N TWP PA.1 Route in Unincorporated Weld County and Current or Future Road R ignt-ar. W ay TWP PA Route n Unincorporated Weld County TWP PA. 1 Route outside Unincorporated Weld County --•— County Boundary River/Stream/Canal/NO :61TM 4:i Laxe/Reservor Existing Access • Location • new Access Location 2 1Zo,U a GRANO A a CR 22 CR 185 T L UPTFN CR *-6 1179 S' CR '2 Pia CR 2 CR 25 / BASELWSF S. I •r i .r 1 ,_ c _ BRIGHTON CBS" S* praocE Figure C.2.c-7.2 Possible TWP PA -1 Access Locations G •APR IAA 04‘l \f:i!- as '<C. 12O0/20'8 1 inch = 1 2 miles AS( Ca'> 4 a!, 0.4L4.VAa SLIP 5C;.FC7, W ,MCTO444C. SS OCAT'CK VD hi SAY" 7'A•T'SOT AV "WS cl+.a rrre w*. Cr.' THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Bridges in the area and along the haul routes listed as structurally deficient or functionally obsolete in the Federal Highway Administration's 2016 National Bridge Inventory are presented in Table C.2.c-7.4. TWP PA -1 contractors will follow applicable laws and load restrictions as required. TABLE C.2.c-7.4 Structurally Deficient or Functionally Obsolete Bridges Near TWP PA -1 Roadway Location Structure Number* Rating Impact County Road 17 0.3 miles north of County Road 4 County Road 19 0.9 miles north of County Road 4 State Highway 52 5.3 miles east of Interstate 25 WEL017.0-004.0A Structurally Deficient Parallel to TWP PA -1 WEL019.0-004.0B Structurally Deficient Near TWP PA -1 D -17 -BU Functionally Obsolete Near TWP PA -1 *Notes: Structure number designation from Federal Highway Administration's 2016 National Bridge Inventory. Anticipated delivery and commuting routes are shown in Figure C.2.c-7.3. It is not expected that any road improvements or closures would be required to facilitate the transport of materials. In the event that a closure is necessary, the duration of the closure will be minimized, and Weld County standards and procedures will be followed. Material Storage The water pipe and other materials are expected to be transported via truck haul routes to the temporary and permanent easement or temporary staging areas. When possible, Thornton plans to off-load and string pipe along the easements as it is delivered to reduce the number of trips required for material delivery. Thornton will comply with Weld County regulations regarding material storage, transport, and land use. Parking and Vehicle Storage Parking and vehicle storage during construction will be primarily on property within the permanent or temporary easement or at temporary staging areas. When additional parking is required, Thornton will negotiate with landowners and commercial businesses for available parking to avoid parking in the public ROW. Temporary staging areas for parking and worker buses or shuttles to transport workers to the active work site may also be implemented to reduce traffic when practicable. Construction workers will be instructed to abide by applicable laws and regulations both while commuting to and working at the TWP PA -1 site. Construction in ROW The criteria for developing the water pipeline alignment included locating the water pipeline and appurtenances outside existing and future Weld County ROW. Thornton understands that, if the TWP PA -1 crosses Weld County ROW or is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. The TWP PA -1 transitions from one side of the road to the other at multiple locations to minimize impacts to property owners, existing structures, including buildings, irrigation ditches, oil and gas facilities, other utilities, and other infrastructure. Other than road crossings, the water pipeline is proposed to be located in Weld County future ROW at one location and in Weld County ROW at three locations. TWP USR PA -1 SECTION 12 TRAFFIC STUDY C Thornton Water Project ZINNIA AVE In. N U CR5.6/� L!NGMON GR205 m' TIPPLE W C a c7 <CR145 FREDERICK CR875 ERIE•PvW CR6 ERIE L. a; LPINE. t. . tl • JO 3 rn IA c CR 1 BROOMFIELD 7 4; sr U) PJ 2 yatx_ 160TH AVE I Lake/Reservoir ♦� Possible Haul Route (4- Thornton ADAMS AVE -tAESTONE BD I. -. ^. 7ELM ST PINE CONE AVE CR 16 TST ST 8TH ST :65TH HORNTON NORTHGLENN CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 80241.2405 S 0 0.6 1.2 MIbs ..••• County Boundary PLATTEVILLE TWP PA -1 Route in Unincorporated Weld County a and Current or Future Road R.ght-or-Way TWP PA -1 Route in Unincorporated Weld County TWP PA -1 Route outside Unincorporated Weld County 1Q8TH AVE TLUPT CR22 CR 18.5 N CR 16 4TH ST •:s9TH ST 7TH ST 1c - rL S 1 c C z CR •• CR4 CR25 BRIGHTON BUSH ST BRIDGE ST Figure C.2.c-7.3 Possible Haul Routes 12/20/2018 1 inch = 1 2 miles - Rrver/Strearn/Canal/Ditch O 4 'tees T..04NTW %Oatfre. ?gat CT' TASK OQOE4 se •>£4MYTwOKIM6tMt £* 2Sift0010E V CnONieOiltE St idiot 4EliCO ICC) AESPO*T •blO'lD.E tMflM +-J qna nee Carr. Ca9 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION Full or partial road closures could be required for TWP PA -1 installation in unincorporated County ROW. Weld County standards will be followed and permits will be obtained for any required closures. ROW will be restored to pre -construction conditions and in accordance with Weld County standards. Road Crossings Unless required otherwise by Weld County, water pipeline road crossings, including the appurtenant buried fiber optic cable, in unincorporated Weld County will be constructed using open -cut construction. Road closures with detour routes or partial road closures could be required. Weld County standards will be followed, and permits will be obtained for any required closures. ROW will be restored to pre -construction conditions and in accordance with Weld County standards. Weld County Public Works staff has indicated a preference that crossings of paved roads utilize trenchless construction methods. The TWP PA -1 construction will utilize trenchless construction methods to cross Weld County roads where required by Weld County. Additional temporary construction easements could be required to accommodate trenchless construction methods. Where trenchless construction methods are used, shafts will be located on either side of the road for launching and receiving the water pipeline and the fiber optic cable. These shafts are expected to be located outside the ROW, if feasible. Equipment, pipe/materials, and temporarily stockpiled excavated material from the trenchless installation operation are expected to be stored on either side of the road. Weld County standards will be followed, and permits will be obtained as required. Shafts will be backfilled and compacted, and affected areas will be restored to pre -construction conditions. Preferred Route in Weld County Future ROW Weld/Adams County Line Crossroads Alignment Study, (Felsburg Holt & Ullevig, 2008 October) includes conceptually how best to realign County Road 17 and Quebec Street to provide a smooth transition across County Road 2. This area is within Thornton's GMA, and County Road 17 realignment would likely be completed with or after annexation of the area by Thornton. Parcel number 146933000019, the property east of County Road 17 north of County Road 2 would be affected by the realignment. At the request of the property owner, Thornton requests approval to install approximately %2 -mile of the water pipeline and fiber optic cable within the future County Road 17 ROW and 250 -feet within existing County Road 17 ROW between County Road 2 and County Road 2.5 as show in Figure C.2.c-7.4. A letter from the property owner supporting Thornton's request is included in Exhibit C.2.c.-7.1. Traffic impacts at this location will be minimal during construction because no road currently exists for the majority of the alignment. Impacts to traffic will be limited to access locations to the construction area at County Road 2 and County Road 17 and the transition location from future to proposed ROW where 250 feet of the water pipeline is proposed within Weld County ROW but outside of the travel lane. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. Required access permits from Weld County will be obtained for access from any Weld County road prior to start of construction. TWP USR PA 1 SECTION 12 TRAFFIC STUDY THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION :1469J24(Y061T•- -JACOBLCCt1JONN J (10'. INY)" v4 S 146972460003 SCNREINER LOISIITAE 146432401001. 'LACNANCE OAVIdW 7;-' t • 1469J24u 1c'.;'• iu BONS JEFFREY J 146972401004 SIUUONS JEFFREY J 168th Aveh" e !Approximately 2,510 in proposed Weld,CC '4GG 3130G'1; CR2 2 LLC 14t 937361411 KORBE JEFFRY M FIGURE C.2.c-7.4 TWP PA -1 Proposed Location in Weld County Future and Current ROW TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-13 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION October 12, 2018 Weld Board of County Commissioners 915 10th St Greeley, CO 80631 Subject: Thornton Water Project Pipeline Location Dear Commissioners: The city of Thornton (Thornton) has contacted us requesting easement for the Thornton Water Project (TWP) pipeline across property we own along Weld County Road (CR) 17 between CR 2 and CR 4. Thornton has informed us that Weld County has directed them to keep the TWP pipeline outside of Weld County rights -of -way (ROW) and to pursue easements with private property owners. In 2008 Weld County adopted a plan for realignment of Quebec Ave/CR 17 that would place the realigned section of the road on our property. The study can be found at: http://www.adcogov.org/sites/default/files/482_0.pdf. The relevant page is attached. Thornton's representatives have met with me on several occasions to determine a routing that will least affect the future of the property, and it is our desire to minimize encumbrances to maintain maximum flexibility. Thornton has proposed several alternatives for routing the pipeline, including purchase of an existing unused easement. Drawings are attached. We believe it is in our best interest to pursue the route across our property that places the waterline in the east side of the realigned ROW of Quebec Ave/CR 17. This will allow the greatest flexibility by maximizing useable land along the east side of CR 17. Please consider committing to follow the Recommended Alternative road plan and allow Thornton to install their pipeline in the future CR 17 ROW. It meets Thornton's needs and is in our best interest as Weld County residents and property owners. Thank you for your consideration. For questions please contact us at Respectfully, William R. Wycoff Attachments et- in 'fat- • .a...._l�ie4p0 Adriann C. Wycoff I EXHIBIT C.2.c-7.1a Parcel Number 146933200024 Property Owner Letter to Weld County TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-14 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION oink i>.cta$ COtNT1 - fo+ City of Thornton Weld/Adams County Line Crossroads Alignment Study Weld Count) Road 1;/Quebec Street & Weld County Road 2/East 168th Avenue Intersection Kc\rsmtnr-nd,sd Alter - ally c EXHIBIT C.2.c-7.1b Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 1 �,_ sue_ _�- I •1 • • hit ji Nor S EXHIBIT C.2.c-7.1c Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 2 TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-15 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION • 'rob sew ateli•V Sill— s —I c IIIFCSISTS:01 aXL$C x:iCTIC • w w ^ • —a drior. — -! £:F .VV.. M 'a n, .•OT PED4DYOFDENENIPTION 1444‘13.344E a. s SN'M SEC 33 RSLIN s;..7 •iw - - V • .. . F 4..24 - a v—♦ -- 4 - - --- *O, :aar - q - W It L w ..— q I EXHIBIT C.2.c-7.1d Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 3 11; Ili 1 l • sec.A • , h 4!7.17 PQ0PERTr INFORIM la =acts D I I il_,.. 4� li 41 t Is. . e, r r' _ > � . � 467 a I / i M4 , � i S... d PN i♦OfaR600 1!1.70 ' PECD1401D EISWMP1 116!1114* J 7r3 a r. SEC 13 3. ;5 jainill -.wr s..r.1r it it• s. ..... . EXHIBIT C.2.c-7.1e Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 4 TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-16 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION I w-4_ r ew•_ • Et%% RC r 1.144 RP.a it, II MCON0CO EZEw1IIT 'en-,- a. 4SI - I'. •+IEn00EE•S •v wr e-• �..—�vi �� r.-. ;O*A DEL OftDEC EXEMPTION se.o.141E 2451 a r.. A. N883MMI4 -4. 1 Ml • 1 ~$ • • f -- ' " swam- - r a .11SM V lion • s. —+—F-- --3Nr— 'A4tD CON,. RCAD l t .. _tar 1 PP. I4M332Oai2. ..l 1011a -' 'CI A laFLOIWO E.E1A•IO.. X.1.2 Of ter• 7TA NECDIGF}nne y. •.r)Ai.7E+w.Ye• sS. 40 Z.40064.1 �.•.Ir�a.n� .M IeLt0004 ..71E MOCRO®El5DJOtom 1. 4.A.1.]!1£ - V 0052 MM NW4i. SEC JJ 1' 141.86141 z- I t• 'I Fineisra; =PA i...a.ata I'!I Pat taMSZXIMI LOI A NEaoOODLaAPTE7. '.HJJ•JNE 4"• PIN .S a aesfi• as k EXHIBIT C.2.c-7.1f Parcel Number 146933200024 Property Owner Letter to Weld County Attachment S Preferred Route in Weld County ROW Location 1 New development along the west side of County Road 17 and existing homes on the east side of County Road 17 north of County Road 6 significantly restrict available space outside Weld County ROW. The property owner on the west side of County Road 17, parcel number 146920400011, has received approval and started construction on a recreational vehicle and self -storage facility, including improvements, fencing, and grading up to the future ROW line. To limit disturbance to existing homes and the new development, Thornton requests approval to locate the water pipeline and fiber optic cable in Weld County ROW for approximately 1,430 feet of County Road 17 from just south to north of County Road 6 as shown in Figure C.2.c-7.5. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION 12 TRAFFIC STUDY THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION Approximatelyr(430Ieet proposed ji Weld County Location 2 s a POGGENSEE D NNIS L 2 D&CFARMS LLP (5/12 !NTH) FIGURE C.2.c-7.5 TWP PA -1 Proposed Location 1 in Weld County ROW Efforts to locate the TWP PA -1 outside of a pond to minimize agricultural operations and to minimize disturbance to private property frontage of existing residential homes, require locating approximately 300 feet of the water pipeline and fiber optic cable in Weld County ROW. This proposed location is approximately 650 feet north of the intersection of County Road 17 and County Road 8 as shown in Figure C.2.c-7.6. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION 12 TRAFFIC STUDY THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION k� rf:d 1;,112' i_. Fr.i.: ^ �91; =r--UNDERHILL4• .r. • t '• , •- JOHNIE--ca3/4 146920000019_ Location 3 RICHARD FIGURE C.2.c-7.6 TWP PA -1 Proposed Location 2 in Weld County ROW Extensive gravel mining along County Road 17 between County Road 26 and State Highway 66 limits the location of the TWP PA -1 to areas outside gravel pit limits. Thornton worked extensively with Varra Companies (primary owners of gravel mines in the area) to find a suitable location for the water pipeline. Varra Companies indicated that any easement acquired by Thornton would result in loss of minable minerals and future water storage when the gravel pits are reclaimed. Varra Companies requested that the water pipeline be located within Weld County ROW where possible to limit loss of access to the gravel resource. Thornton approached Weld County staff with this request and met on -site with Weld County staff and a representative of Varra Companies. Weld County staff requested confirmation that the water pipeline could be located within the County Road 17 and County Road 28 ROWs without interference to existing and future utility needs. Based on field survey, the water pipeline can be located in the ROW without interference, and Thornton requests approval for approximately 1.9 miles of water pipeline and fiber optic cable be located in Weld County ROW as shown in Figure C.2.c-7.7. A letter from the property owner supporting Thornton's request is included as Exhibit C.2.c-7.2. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION 12 TRAFFIC STUDY 1? 19 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION VC9:9i OOC!v _..r �1fEYl�lt j �AiRtl��lti , H1FG't)h - 1152-13 'YC7, tri Approximately 1335 feet proposed in Weld County ROW 0 455 930 Sr Fee' 1 inch =930 feet ,'...}31 mama a •b,,}}ilf) emirs Trwrqsri i'LL LIZ .S!'iti-kialati 112 Approximately 4,953 feet . proposed in Weld County ROW to %or aLr !t,i.rnr ..HIA LL FIGURE C.2.c-7.7 TWP PA -1 Proposed Location 3 in Weld County ROW TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-20 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION November 30, 2018 Weld County Commissioners 1150 O Street P.O. Box 758 Greeley, CO 80631 **Sent Via Email to Diana Aungst--daungst@weldgov.com** Subject: Thornton Water Project Pipeline Location Comments Dear Commissioners: The city of Thornton (Thornton) has contacted me requesting easement for the Thornton Water Project (TWP) pipeline across property owned and operated by Varra Companies, Inc. and Pasquale Varra along Weld County Road (WCR) 17 between WCR 26 and State Highway 66. Thornton has informed me that Weld County has directed them to keep the TWP pipeline outside of Weld County rights - of -way (ROW) and to pursue easements with private property owners. It is my understanding that the intent of this requirement is to benefit private property owners in the form of compensation for the easement. Properties owned by Varra Companies potentially affected by the TWP are either being actively mined or will be mined in the near future. Mining and reclamation plans have been developed and approved or are in the process of development for all these properties. Thornton's representatives have met with Varra Companies on several occasions to determine routing that will least affect mining operations; however, any permanent easements on these properties will result in significant loss of gravel resources and water storage volume after reclamation. Loss of these resources cannot be recovered by the value of the easement. I met with Thornton representatives and Weld County staff on site May 17, 2018 to discuss these issues and potential alternatives, including whether Weld County would allow the TWP in WCR 17 and WCR 28 ROWs. At that meeting, staff indicated that this would be considered, subject to Thornton providing sufficient survey to show that the TWP pipeline could be in ROW without conflict to existing and planned utilities and road maintenance. Thornton has obtained that survey and shown that the pipeline can be installed without conflict. Gravel mining is a significantly different land use than most of the rest of the TWP alignment. In agricultural areas, the pipeline can be in an easement without long term effect on land use after construction. Farming and ranching can continue on the property encumbered by the easement once construction is complete. In areas planned for development, the easement can be located in required setbacks from the county road, which does not affect area available for development. Conversely, gravel mining makes use of the property to the highest degree, so any easement would have a long-term negative impact to the use of the property. Permanent easements on the existing and proposed gravel mines owned by Varra Companies would have a detrimental impact to our business that cannot be compensated in the cost of the easements. Varra Companies strongly requests the Commissioners allow Thornton to install the TWP pipeline in the WCR 17 and WCR 28 ROWs adjacent to our properties. Thank you. If you have any questions, please contact me at Respectfully, enne-K,‘, Garrett Varra Varra Companies, Inc. EXHIBIT C.2.c-7.2 Location 3 Property Owner Letter to Weld County TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-21 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION Permits Required access permits from Weld County will be obtained for access from any Weld County road prior to start of construction. Access permit application(s) will be submitted to the Public Works Department (Engineering). The TWP PA -1 will abide by the Weld County Access Policy (WCC, Chapter 12, Article V) as applicable. Weld County ROW permits will be obtained for road crossings and to construct the water pipeline within Weld County ROW. Requirements and stipulations of the permits will be followed. As part of the permit applications mentioned above, Thornton or its contractors will develop detailed traffic control plans that include adequate levels of service and safety measures for construction. Sample road closure types that may be implemented, as required, are shown in Figure C.2.c-7.8. Access will be maintained to local area residents. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders. 1 t (A) 4 I i 1 I 1 t 1 1 t (B) (C) FIGURE C.2.c-7.8 Sample Road Closure Types (A) Road Closure with Diversion, (B) Partial Road Closure with Flaggers, (C) Road Closure with Diversion TWP USR PA -1 SECTION 12 TRAFFIC STUDY 12-22 THORNTON WATER PROJECT WELD COUNTY PERMIT APPLICATION Mitigation Measures Thornton and/or the TWP PA -1 contractors will implement traffic strategies to minimize or mitigate traffic disruption from construction activities that could include the following: • To minimize impacts to public roads or bridges directly affected by the TWP PA -1, Thornton may provide maintenance as needed. • To minimize conflicts between TWP PA -1 traffic and local traffic, transport of materials could occur during off-peak hours when practicable. Movements of normal heavy trucks (not oversized) could also be minimized during peak hours to the extent possible. Delivery truck personnel and construction workers may be notified of potential height restrictions and overhead obstructions. If at any time vehicles of excess size or weight are required on Weld County roads or bridges, the Weld County Public Works Department will be consulted and a Special Transport Permit will be obtained. Further detailed delivery routes and concerns will be addressed during the detailed design phase of the TWP PA -1, including verification that bridge crossings on the delivery route have adequate strength and capacity. • Thornton will adhere to Weld County limitations on road closures and construction during peak traffic hours, requirements regarding end -of -day conditions, and mandatory inspections. Whenever possible, the existing number of lanes will be maintained during construction. Temporary road closures or traffic control flaggers will be coordinated with Weld County and local law enforcement. If speed limit reduction is required, such reduction will be in accordance with CDOT Form 586, Authorization and Declaration of Temporary Speed Limits. Traffic control measures such as traffic control flaggers, warning signs, lights, and/or barriers will be implemented to provide safety and efficient progression of traffic. • To minimize the impacts of construction on the local community, Thornton will coordinate with Valley RE -1, Saint Vrain Valley, and Fort Lupton RE -8 School Districts regarding construction and haul routes and school bus traffic. • Construction within Weld County ROW will conform to the Weld County Right -of -Way Use Permit Policy in the WCC, Chapter 12, Article IV. • TWP PA -1 contractors will use water trucks to control dust as necessary and will implement required dust control mitigation treatments. Post -construction, disturbed areas will be restored to their pre -construction condition and further dust control mitigation is not expected to be necessary. • Stabilized construction entrances/exits will be installed, as necessary, at the intersections of the TWP PA -1 temporary access locations with paved roads. Significant soil transferred onto paved roads will be removed as necessary to maintain the quality of Weld County roads and state highways. • Access will be maintained to local area residents. • Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. TWP USR PA -1 SECTION 12 TRAFFIC STUDY Section 13 Community Meeting This section addresses USR Procedural Guide Checklist, community meeting and WCC Section 23-2-510 C.2.e. Public outreach is not required by Weld County's USR permit application process. However, to introduce the public, potentially affected property owners, and stakeholders to the TWP, Thornton implemented and conducted the following: • TWP website (www.ThorntonWaterProject.com) • TWP e-mail address (info@ThorntonWaterProject.com) • TWP phone line (720-977-6700) • Open Houses • Stakeholder outreach meetings and coordination activities Section 3 Summary Statement, C.2.e provides a summary of public and stakeholder outreach. See Appendix C for additional information on public outreach and Appendix D for additional information on stakeholder outreach. TWP USR PA -1 SECTION 13 COMMUNITY MEETING 13-1 Section 14 Electronic Submission This section addresses USR Procedural Guide Checklist, electronic submission. Electronic copies of required documents in Adobe Acrobat © portable document format (PDF) are included on a thumb drive. TWP USR PA -1 SECTION 14 ELECTRONIC SUBMISSION 14-1 Section 15 Application Fee This section addresses USR Procedural Guide Checklist, application fee. A check for $2,500 payable to WCPD is included with this Application for the Weld County Planning Fee required for Use by Special Review — All other Use by Special Review permits. TWP USR PA -1 SECTION 15 APPLICATION FEE 15-1 Section A Applicant's Name and Telephone Number This section addresses WCC Section 23-2-510 A. A. The applicant's name and telephone number. Applicant City of Thornton Brett E. Henry, Executive Director — Infrastructure Department Phone: (720) 977-6700 E-mail: Brett.henry@cityofthornton.net TWP USR PA -1 SECTION A APPLICANTS NAME AND TELEPHONE NUMBER A-1 Section B Address of the Applicant This section addresses WCC Section 23-2-510 8. B. Address of the applicant and general OFFICE. City of Thornton Brett E. Henry, Executive Director — Infrastructure Department 12450 Washington Street Thornton, Colorado 80241 TWP USR PA -1 SECTION B ADDRESS OF THE APPLICANT B-1 Section C Summary Statement This section addresses WCC Section 23-2-510 C. C.1 Source, capacity, size destination and type of facilities, support STRUCTURES, lines, etc., involved. This section addresses WCC Section 23-2-510 C.1, and the USR Questionnaire, Planning 1. Thornton is proposing to construct, operate, and maintain the TWP, which is a water delivery system that will convey domestic water Thornton purchased in the mid -1980's from the Water Supply and Storage Company system, located in Larimer County, to Thornton. The TWP includes approximately 60 miles of pipeline through Larimer and Weld Counties to Thornton. This Application requests approval of a location to construct, operate and maintain a segment of the TWP, TWP PA -1, which includes up to approximately 13.3 miles of a buried 48 -inch diameter water pipeline capable of conveying 40 million gallons per day (mgd) and associated appurtenances in unincorporated Weld County, Colorado. The TWP PA -1 appurtenances include buried fiber optic cable and various buried water pipeline structures and valve vaults including access manways, blow - off assemblies, air release vaults, and isolation valve vaults. Additional information is included in Section C.2.a. C.2. A detailed report shall be submitted which includes information on the following Items: C.2.a. A description of the PIPELINE — DOMESTIC WATER. This section addresses WCC Section 23-2-510 C.2.a, and the USR Questionnaire, Planning 1 and Building 1, 3. TWP PA -1 Components in Unincorporated Weld County The TWP PA -1 components in unincorporated Weld County include the following: • Water pipeline. Up to approximately 13.3 miles of a buried, 48 -inch diameter water pipeline capable of conveying 40 mgd of water will be constructed in unincorporated Weld County. The water pipeline will be buried at a minimum depth of 4 feet below grade. The depth of bury will vary based on existing utility crossings, road crossings, water crossings, other existing or proposed features, and property owner preferences. Typically, a 50 -foot permanent easement for the water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners except where the TWP PA -1 is proposed to be constructed in road right-of-way (ROW). Thornton understands that, if the TWP PA -1 crosses Weld County ROW or is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. • Appurtenances. Communications. Up to approximately 13.3 miles of buried fiber optic cable, including buried manholes, test stations, and other fiber optic cable appurtenances will generally parallel the water pipeline in unincorporated Weld County. The fiber optic cable will be installed in close proximity to the water pipeline. The fiber optic cable will allow Thornton to remotely operate the TWP. The cable will be buried at a minimum depth of 3 feet below grade. The depth of bury will vary based on existing utility crossings, road crossings, water crossings, or other existing or proposed features, and property owner preferences. c� Other appurtenances. Various buried water pipeline appurtenances and structures, including access manways, blow off assemblies (used to drain the water pipeline), TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 combination air release valve vaults (used to exhaust air when filling the water pipeline and admitting air during draining operations), and isolation valve vaults will be constructed. Photographs of example appurtenances and structures are shown in Figure C.2.a. The size of structures and interior components of manholes and vaults will be designed specifically for the TWP PA -1 and could vary from the description. Additional permanent and temporary easements could be obtained for these appurtenances. Combination Air Release Valve Vault. Photo of combination air release valve vault after construction. Vault is a concrete vault, buried below grade. Vault houses air release valves and an access manway. Visible features include the air vent, access hatch, and valve box markers. Isolation Valve Vault. Photo of isolation vault after construction. Vault is a concrete vault, buried below grade. Vault houses an isolation valve, air release/vacuum valves, and miscellaneous piping. Visible features include the air vent, access hatches, and valve box markers. Blow -off Assembly with Discharge Structure. Photo of blow -off manhole, pump well manhole, and dissipation structure after construction. The blow -off manhole is a concrete manhole that houses a blow - off drain valve. The pump well manhole is a concrete manhole that houses a pump out pipeline. The dissipation structure is a concrete structure located at grade. Visible features include the air vent, dissipation structure, manhole covers, and valve box markers. Blow -off Assembly with Pump Out. Photo of blow -off manhole and pump well manhole after construction. The blow -off manhole is a concrete manhole that houses a blow -off drain valve. The pump well manhole is a concrete manhole that houses a pump out pipeline. Visible features include the air vent, manhole covers, and valve box markers. FIGURE C.2.a Example Buried Appurtenances TWP USR PA -1 SECTION C SUMMARY STATEMENT C-2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TWP PA -1 Components in Incorporated Weld County Portions of the TWP PA -1 are located in incorporated areas of Weld County in Platteville, Firestone, Frederick, and Dacono. Thornton understands that approval and permits will be required with these government agencies for the portions of the TWP PA -1 located within incorporated areas as appropriate. Information provided in this Application on the TWP PA -1 components located within incorporated areas is of a general nature and is included to present a more complete scope of the TWP PA -1. Approximately 2.8 miles of water pipeline is located in incorporated areas of Platteville, Firestone, Frederick, and Dacono. Appurtenances will be as described above in this section. In addition, the TWP PA -1 appurtenances include an approximate 40-mgd booster pump station proposed to be located near the intersection of County Road 17 and County Road 20 in Firestone. To date no design has been completed for the booster pump station and Thornton will seek approvals and obtain permits as appropriate with Firestone for this appurtenant facility. Land Acquisition Thornton will purchase easements through good -faith negotiations with property owners and will only use eminent domain when all other reasonable options have been explored. Typically non- exclusive permanent easements will be or have been acquired for installation, operation, and maintenance of the water pipeline and appurtenances. The typical permanent easement width is 50 -feet wide, and the typical temporary construction easement is an additional 40 -feet in width. The TWP PA -1 is developed in a manner that is respectful of private property rights. As part of the process to negotiate the purchase of easements where needed, Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain water pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. Easements are negotiated based on fair market value. The easements will grant Thornton an area to construct, operate, and maintain the water pipeline, and property owners will maintain fee title to the land. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The predominant land use in the TWP PA -1 area, agricultural use, is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. Table C.2.a presents the properties crossed, including parcel number, property owner name, number of contacts with property owner, and status of land acquisition. Initial offers have been made to most property owners. For those initial offers that are not accepted, the next step will be to present the property owner with a notice of intent, continue good faith negotiations to the extent practicable and then present a final offer. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.a TWP PA -1 Land Acquisition Status as of December 19, 2018 No. Parcel Number Property Owner Name Number of Contacts Made Date of Last Contact Right of Entry Initial Offer Notice of Intent Final Offer Executed Easement 1 146933000019 Wycoff William R and Adriann C 19 7/27/17 A 2 146933200004 Weld Farm Holdings LLC 18 9/11/18 A I 3 146932000015 D and C Farms LLLP 7 5/1/18 A N 4 146932000014 Howard Christopher and Virginia 20 5/30/18 A N 5 146929000045 D and C Farms LLLP 7 5/1/18 A N 6 146928200002 D and C Farms LLLP 7 5/1/18 A N 7 146929200040 ERN Ltd Partnership 16 8/30/18 A 8 146920400011 Roos Richard J Sr and Betty L 10 9/7/18 A I 9 146920400009 Cha Yingtse and Ntzia Thoa 22 9/12/18 A I 10 146921000007 Stevens Robert A Claudia L 12 5/7/18 A A N/A N/A C 11 146921000006 Road 17 LLC 17 9/5/18 A 12 146920000018 Gaspar John N 18 9/7/18 A 13 146921200016 Olson Richard and Betty 23 8/24/18 A I 14 146920000019 Auker Patrick S and Kelly K 17 5/11/18 A N 15 146916300083 Eskildsen Sandra 25 10/29/18 A N 16 146917000025 Underhill John E et al 20 7/19/18 A N 17 146917400041 Underhill John E et al 20 7/19/18 A N 18 146914400040 Underhill John E et al 20 7/19/18 A N 19 146917400039 Dolan Mathew C and Tammy D 40 8/20/18 A A N/A N/A C TWP USR PA -1 SECTION C SUMMARY STATEMENT C-4 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.a TWP PA -1 Land Acquisition Status as of December 19, 2018 No. Parcel Number Property Owner Name Number of Contacts Made Date of Last Contact Right of Entry Initial Offer Notice of Intent Final Offer Executed Easement 20 146917100057 Underhill John E et al 20 7/19/18 A N 21 146916000001 McFee John L Jr Et al 17 6/28/18 A A N/A N/A C 22 146909000003 NRC Co 1 LLC 11 5/16/18 N N 23 146908000017 NRC Co 1 LLC 11 5/16/18 N N 24 146905000017 Johnson Farms LLP 14 9/13/18 A N 25 146905100011 Columbine Jersey Farms Inc 16 11/26/18 I N N/A A C 26 146904200008 Pham Vinh Q and Vuong Nga 23 7/2/18 A A N/A N/A C 27 131133319001 Johnson Farms LLP 14 9/13/18 A N 28 131133318002 Town of Frederick 11 9/14/18 I 29 131133318001 PSCO 25 12/10/18 A 30 131133200057 I Heart Media Tower Co 23 9/12/18 A I 31 131133000007 PSCO 25 12/10/18 A I 32 131132000034 Farmers Reservoir and Irrigation Co 20 8/2/18 A 33 131132000032 Smith Brett R and Sweet Carol 15 11/7/18 A N N/A A C 34 131129000031 Mallory David E 15 6/25/18 A N 35 131129000011 Camenisch Charitable Trust 21 8/28/18 A I 36 131120400005 Dixie Water LLC 18 11/26/18 A I 37 131120400034 Dixie Water LLC 18 11/26/18 A I 38 131120000017 Anadarko Eand P Onshore LLC 23 8/14/18 A I TWP USR PA -1 SECTION C SUMMARY STATEMENT C -S THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.a TWP PA -1 Land Acquisition Status as of December 19, 2018 No. Parcel Number Property Owner Name Number of Contacts Made Date of Last Contact Right of Entry Initial Offer Notice of Intent Final Offer Executed Easement 39 131117000006 Sanders Raymond E and Barbara 13 9/12/18 A A N/A N/A C 40 131116000002 State of Colorado 10 Ongoing A 41 131109000006 Martin Ruth M 8 8/31/18 A 42 131109000005 Martin Donald L and Ruth M 8 8/31/18 A 43 131109000004 Martin Donald L 8 8/31/18 A I 44 131109000001 Martin Ruth M 8 8/31/18 A 45 131109000002 Sprague Mindy 3 8/24/18 I N 46 131108100057 Sater Family Interests LP 7 8/24/18 N I 47 131109000003 Gardner Estate LLC 12 9/18/18 N I 48 131104000073 HuffakerNormanJ 18 9/12/18 A 49 120932401002 Varra Pasquale and Jacqueline 20 11/9/18 A 50 120932101003 Varra Pasquale and Jacqueline 20 11/9/18 A 51 120929100052 Varra Companies Inc 20 11/9/18 A 52 120928200017 Town of Firestone 8 4/18/17 I 53 120928000002 Varra Companies Inc 20 11/9/18 A 54 120920100041 Dixie Water LLC 16 11/26/18 A I Notes: A = Accepted; I = In Progress; N = Not Accepted; C = Complete; N/A = Not Applicable. List is numbered south (No. 1) to north. TWP USR PA -1 SECTION C SUMMARY STATEMENT C_6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 C.2.b. A description of the preferred route or location of the PIPELINE — DOMESTIC WATER and reasons for its selection. This section addresses WCC Section 23-2-510 C.2.b and the criteria described in WCC Sections 23-2-480 A.1, 23-2-480 A.3, 23-2-480 A.5, 23-2-480 A.6, 23-2-480 A.7, 23-2-490 A, 23-2-490 C, 23-2-490 E, 23-2-490 F, and 23-2-490 G. Preferred Route Description The preferred route of the water pipeline for the TWP PA -1 includes up to approximately 13.3 miles of a buried 48 -inch water pipeline and associated appurtenances in unincorporated Weld County, Colorado. The water pipeline generally parallels County Road 17 and extends from just north of Saint Vrain Creek to 168th Avenue. Guidance from Weld County staff indicated that the preferred route be located outside future planned road ROW. The preferred route is located parallel to but outside of the future planned Weld County road ROW where practicable. Typically, a 50 -foot permanent easement for the water pipeline and an additional 40 -foot temporary easement for construction has been or is in the process of being purchased from property owners. Figure C.2.b.1 shows the preferred route for the TWP PA -1. Portions of the TWP PA -1 include approximately 2.8 miles in incorporated areas of Platteville, Firestone, Frederick, and Dacono including roads that have been annexed by these local governments. Areas shown as a dashed line on Figure C.2.b.1 show the TWP PA -1 route outside of unincorporated Weld County. Thornton understands that, if the TWP PA -1 crosses Weld County ROW or is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. The water pipeline is proposed to be located in Weld County future ROW at one location and in Weld County ROW at three locations. TWP USR PA -1 SECTION C SUMMARY STATEMENT C-7 Thornton Water Project ZINNIA AVE n CR 20 Cr?.. {17 W 0 11PPMAP? WV> W a CR 14.5 CR 8.75 ERIE' KWr yR6 ERIE BROOMFIELD 160TH AVE C Z 7 ( Thornton DACONO NORTHGLENN THORNTON CITY OF THORNTON COLORADO *2450 WASHINGTON ST THORNTON, CO 80 24 1-24 05 12120/2018 FIRESTONE 80 PINE CONE AVE ci . � --72; 0 S 0.6 CR 14 62 12 1 Inch = 12 miles Miles N J W W J LATTEVILLE 168TH AVE O Lake/Reservor i yt TWP PA -1 Route in Unincorporated Weld County a and Current or Future Road Rpnt-ot-Way TWP PA -1 Route in Unincorporated Weld County TWP PA.1 Route outside u Unincorporated Weld County --- Railroad - Rtver/Strearn/CanaUDitch N U BRIGHTON CR 18.5 TLUPT•N 14TH ST CR'2 CR8 CR4 CR25 EUNE RD BRIDGE 5T' Figure C.2.b.1 TWP PA -1 Route C SUIt 1. t•Ckthtp'CfT..r.4 P4CufCT,TA.Sit 040E{. MNOwQSWAPrn E�'rE_ D.b7riffOtACF MAPll3EC11OM IW*_i1.• 4 jTE tan MSPCl1 •Y'Mf0•' •f f04f PY vv.= Cret9_Weis Gash= �8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Preferred Route in Weld County Future ROW Weld/Adams County Line Crossroads Alignment Study, (Felsburg Holt & Ullevig, 2008 October) was adopted by the Weld County Board of County Commissioners in November 2008. The study includes conceptually how best to realign County Road 17 and Quebec Street to provide a smooth transition across County Road 2. This area is within Thornton's Growth Management Area (GMA), and County Road 17 realignment would likely be completed with or after annexation of the area by Thornton. Parcel number 146933000019, the property east of County Road 17 north of County Road would be affected by the realignment. At the request of the property owner, Thornton requests approval to install approximately 1/2 -mile of the water pipeline and fiber optic cable within the future County Road 17 ROW and 250 -feet within existing County Road 17 ROW between County Road 2 and County Road 2.5 as show in Figure C.2.b.2. A letter with attachments from the property owner supporting Thornton's request is included in Exhibits C.2.b.la through C.2.b.lf. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. Appr ,irnatelr 2,5 I a I2 ): setl.Wild oun Eti(168TA a un`G ue We d ounty=Road 2 FIGURE C.2.b.2 Preferred Route in Weld County Future and Current ROW TWP USR PA -1 SECTION C SUMMARY STATEMENT C-9 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 October 12, 2018 Weld Board of County Commissioners 915 10th St Greeley, CO 80631 Subject: Thornton Water Project Pipeline Location Dear Commissioners: The city of Thornton (Thornton) has contacted us requesting easement for the Thornton Water Project (TWP) pipeline across property we own along Weld County Road (CR) 17 between CR 2 and CR 4. Thornton has informed us that Weld County has directed them to keep the TWP pipeline outside of Weld County rights -of -way (ROW) and to pursue easements with private property owners. In 2008 Weld County adopted a plan for realignment of Quebec Ave/CR 17 that would place the realigned section of the road on our property. The study can be found at: http://www.adcogov.org/sites/default/files/482_0.pdf. The relevant page is attached. Thornton's representatives have met with me on several occasions to determine a routing that will least affect the future of the property, and it is our desire to minimize encumbrances to maintain maximum flexibility. Thornton has proposed several alternatives for routing the pipeline, including purchase of an existing unused easement. Drawings are attached. We believe it is in our best interest to pursue the route across our property that places the waterline in the east side of the realigned ROW of Quebec Ave/CR 17. This will allow the greatest flexibility by maximizing useable land along the east side of CR 17. Please consider committing to follow the Recommended Alternative road plan and allow Thornton to install their pipeline in the future CR 17 ROW. It meets Thornton's needs and is in our best interest as Weld County residents and property owners. Thank you for your consideration. For questions please contact us at Respectfully, W William R. Wycoff Attachments Adriann C. Wycoff,d14- • 4‘.---t 1 e4O EXHIBIT C.2.b.la Parcel Number 146933200024 Property Owner Letter to Weld County TWP USR PA -1 SECTION C SUMMARY STATEMENT C-10 Recommended Alter .at:ve THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 e Gtti or TnorMOn 41 Willi Weld/Adams County Line Crossroads Alignment Study Weld e_ount% Road 17/Quebec Street & Weld taunts- Road 2ft-ast 168th Avenue Intersection Weld County Road 17 17 Lb I obey &WI EXHIBIT C.2.b.lb Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 1 EXHIBIT C.2.b.lc Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 2 TWP USR PA -1 SECTION C SUMMARY STATEMENT C-11 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 i • ifff �aN r __w •ter go. zsarreerrs. 4 : ir — � - •••••••r- ;flee uc x 1.M1.,Nflw me owno!•ro. SNre INrae ar.Ic*to - -.. r .. i S i _ 7- P airT; -- —� r• •--, �- 1' H i 7•r I.• j - - U 1M - et1I— _ AEIX7RDED . fPM 710 1yJ1E III S w IPS OND I SWIM BEM 1-141. Rd� 1.YY M A. M r ! r- 4 .� • N • I 3 1 tf r. r i w&s io M� WISPS Mart IP•r. SLIP ..• w. EXHIBIT C.2.b.ld Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 3 •••••-.. Ps. NM eta EXHIBIT C.2.b.le Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 4 TWP USR PA -1 SECTION C SUMMARY STATEMENT C-12 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 • a tAEA1S:IMO. LCI A t+ECOCFD Eal.1OM Mgit>"7 AE Lro• 'C's SEC. J: I•y AsaW to, II RE 001®lltWTf. 1Ut n -t -I 1<1t f Nab. oN. WS12:000+S e' "Mr . • ..fine.. . • J c • 1 -;.- rt<.•r 4--1 't i� •_aima. ' IMTJ \'• ..1T. N .�• t M. Ali --a TM '401340000,1 .Qt A %CAROM iT101• . A -1 thin =atdH ROW it • • s_ ;wtwt . rH.ra.,.-n Mt I 48903110004 LOT RECORDED 4A lArinl• p •A}1ACaUJ011 • rr Ward MC U -,x.awr.W A 'wallet s kt I aHlirGrer IOTA RE:'Onett E0ere; •I1 1W31.Om14 I 41 • _r�er•r- • •••••••.._ ,i a let till Rs'. CEO EXFSP'R111 t•il710NIf n'A If rF 110<018114.11,1 t t SA IS EXHIBIT C.2.b.lf Parcel Number 146933200024 Property Owner Letter to Weld County Attachment 5 Preferred Route in Weld County ROW Location 1 New development along the west side of County Road 17 and existing homes on the east side of County Road 17 north of County Road 6 significantly restrict available space outside Weld County ROW. The property owner on the west side of County Road 17, parcel number 146920400011, has received approval and started construction on a recreational vehicle and self -storage facility, including improvements, fencing, and grading up to the future ROW line. To limit disturbance to existing homes and the new development, Thornton requests approval to locate the water pipeline and fiber optic cable in Weld County ROW for approximately 1,430 feet of County Road 17 from just south to north of County Road 6 as shown in Figure C.2.b.3. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 0 200 400 Fee: 2 D & C FARMS LLLP (5/12 INT)) FIGURE C.2.b.3 TWP PA -1 Proposed Location 1 in Weld County ROW Location 2 To locate the TWP PA -1 outside of a pond to minimize agricultural operations and to minimize disturbance to private property frontage of existing residential homes, Thornton requests approval for locating approximately 300 feet of the water pipeline and fiber optic cable in Weld County ROW. This proposed location is approximately 650 feet north of the intersection of County Road 17 and County Road 8 as shown in Figure C.2.b.4. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 16300082. ETZMAYER Appro imately 30 proposed in Weld 146917400O4 . UNDERHICL FIGURE C.2.b.4 TWP PA -1 Proposed Location 2 in Weld County ROW Location 3 Extensive gravel mining along County Road 17 between County Road 26 and State Highway 66 limits the location of the TWP PA -1 to areas outside gravel pit limits. Thornton worked extensively with Varra Companies (primary owners of gravel mines in the area) to find a suitable location for the water pipeline. Varra Companies indicated that any easement acquired by Thornton would result in loss of minable minerals and future water storage when the gravel pits are reclaimed. Varra Companies requested that the water pipeline be located within Weld County ROW where possible to limit loss of access to the gravel resource. Thornton approached Weld County staff with this request and met on -site with Weld County staff and a representative of Varra Companies. Weld County staff requested confirmation that the water pipeline could be located within the County Road 17 and County Road 28 ROWs without interference to existing and future utility needs. Based on field survey, the water pipeline can be located in the ROW without interference, and Thornton requests approval for approximately 1.9 miles of water pipeline and fiber optic cable be located in Weld County ROW as shown in Figure C.2.b.5. A letter from the property owner supporting Thornton's request is included as Exhibit C.2.b.2. Unless required otherwise by Weld County, the water pipeline and the appurtenant buried fiber optic cable will be constructed using open -cut construction. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 0 Ta r a HWY 66 •li,� ";'17 2692900003 209 940005 ,. .•.nom rrnn: �7'.yw1.I�l� ! T O VY W.NYJ Approximatel41.335 feet proposed ii Welci County ROW ts tt•r':TT•1 ACoaol•,1, 'n '?E?1."3.1M� .11, La.isa ,& t3 S 46S 930 1 inch = 93C feet Fe- '� f Z•r !'/ •'.•ail AGORDtY !S2, , r'R 26 �3 LG •1Dcataan VARRA a Q;ti 1PANIES VIM • PAP NIES Approximately 4,953 feet proposed in Weld County ROW 12092800000 READY MXE CONCRETE COMPAN 0933200048 T:s3'riT ;331) rtEassird 12a933.JC014u ()OD"! Rr.) DA K 1299281000 I CONCRE•4E FARMS [y3 120'13A00:',13 !XLPAY Li\ 46• LL r_ FIGURE C.2.b.5 TWP PA -1 Proposed Location 3 in Weld County ROW TWP USR PA -1 SECTION C SUMMARY STATEMENT C-16 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 November 30, 2018 Weld County Commissioners 1150 O Street P.O. Box 758 Greeley, CO 80631 **Sent Via Email to Diana Aungst--daungst@weldgov.com** Subject: Thornton Water Project Pipeline Location Comments Dear Commissioners: The city of Thornton (Thornton) has contacted me requesting easement for the Thornton Water Project (TWP) pipeline across property owned and operated by Varra Companies, Inc. and Pasquale Varra along Weld County Road (WCR) 17 between WCR 26 and State Highway 66. Thornton has informed me that Weld County has directed them to keep the TWP pipeline outside of Weld County rights - of -way (ROW) and to pursue easements with private property owners. It is my understanding that the intent of this requirement is to benefit private property owners in the form of compensation for the easement. Properties owned by Varra Companies potentially affected by the TWP are either being actively mined or will be mined in the near future. Mining and reclamation plans have been developed and approved or are in the process of development for all these properties. Thornton's representatives have met with Varra Companies on several occasions to determine routing that will least affect mining operations; however, any permanent easements on these properties will result in significant loss of gravel resources and water storage volume after reclamation. Loss of these resources cannot be recovered by the value of the easement. I met with Thornton representatives and Weld County staff on site May 17, 2018 to discuss these issues and potential alternatives, including whether Weld County would allow the TWP in WCR 17 and WCR 28 ROWs. At that meeting, staff indicated that this would be considered, subject to Thornton providing sufficient survey to show that the TWP pipeline could be in ROW without conflict to existing and planned utilities and road maintenance. Thornton has obtained that survey and shown that the pipeline can be installed without conflict. Gravel mining is a significantly different land use than most of the rest of the TWP alignment. In agricultural areas, the pipeline can be in an easement without long term effect on land use after construction. Farming and ranching can continue on the property encumbered by the easement once construction is complete. In areas planned for development, the easement can be located in required setbacks from the county road, which does not affect area available for development. Conversely, gravel mining makes use of the property to the highest degree, so any easement would have a long-term negative impact to the use of the property. Permanent easements on the existing and proposed gravel mines owned by Varra Companies would have a detrimental impact to our business that cannot be compensated in the cost of the easements. Varra Companies strongly requests the Commissioners allow Thornton to install the TWP pipeline in the WCR 17 and WCR 28 ROWs adjacent to our properties. Thank you. If you have any questions, please contact me at Respectfully, Garrett Varra Varra Companies, Inc. EXHIBIT C.2.b.2 Location 3 Property Owner Letter to Weld County TWP USR PA -1 SECTION C SUMMARY STATEMENT C-17 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Preferred Route Selection A series of evaluations were conducted to develop the preferred route for the TWP PA -1. A multi- step process was used with considerable thought and consideration to minimize impacts to local communities and future development. A three -tiered evaluation program was implemented: First, alternative conceptual project configurations were evaluated and a preferred delivery concept was selected based on meeting the project purpose and need. See Purpose and Need section. Second, alternative project corridors consistent with the preferred delivery concept and within a broader evaluation area were evaluated with input from potentially impacted communities to determine a preferred corridor. Lastly, with input from potentially impacted property owners within the preferred corridor, route configurations were evaluated within the preferred corridor from step two. Evaluations are summarized below: • Concept Evaluation - High-level evaluation of four alternative conceptual project configurations to determine the preferred TWP delivery concept. • Preferred Corridor Evaluation- Evaluation of four corridor alternatives within a broader evaluation area utilizing the preferred TWP delivery concept to determine a preferred corridor. • Preferred Route Development — Evaluation of possible locations for the water pipeline within the preferred corridor for suitability to determine a preferred route. Concept Evaluation A high-level evaluation of four (4) alternative conceptual project configurations was conducted to determine the preferred TWP delivery concept. The configuration alternatives included: • Concept 1: Pipeline from WSSC reservoirs to Thornton • Concept 2: Pipeline from lower on the Cache la Poudre River to Thornton • Concept 3: Colorado Big Thompson System Exchange/Deliveries • Concept 4: River Exchange up the South Platte River Criteria used to evaluate the relative probability of success at meeting TWP purpose and need for each conceptual project configuration included: • Water quality as related to meeting the need for a higher quality water source for Thornton's water portfolio; • Water quantity as related to meeting the annual volumetric water need over the project planning period; • Permitting requirements as related to meeting the required in-service date for the TWP; and • Intergovernmental constraints as related to meeting the required in-service date for the TWP. Table C.2.b presents a summary of the implementation considerations for each alternative conceptual project configuration, and a probability of success ranking with a ranking of 1 having the highest probability of success in meeting the TWP purpose and need. Concept 1 had the best probability of success. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.b Concept Evaluation Implementation Considerations Concept Alternative Implementation Considerations Probability of Success Ranking (1 = Best) Concept 1 Concept 2 Concept 3 Concept 4 Sufficient volume of higher quality water can be obtained; access to storage provides more reliable delivery and allows reduced facility (pump station and pipeline) sizing; subject to Larimer County 1041 regulations; subject to Weld County Use by Special Review regulations; water pipeline crossings of jurisdictional waters will utilize trenchless construction methods. Sufficient volume of water likely, but less than Concept 1 due to stream losses assessed by State Engineer's Office; water quality is low, at greater risk for contamination events, and likely to further degrade over time; lack of storage results in less reliability and flexibility and requires larger facility (pump station and pipeline) sizing; connections to the Cache Ia Poudre River will require Federal permitting; flow measuring structures required at river dry -up points will require Federal permitting; subject to Weld County Use by Special Review regulations. Diversions at County Line Road at the Cache la Poudre River would require more pumping head, resulting in more energy - intensive, less sustainable operation as compared to Concept 1. Production of sufficient volume of water to meet projected water needs over the project planning period is highly unlikely because of declining potential for exchange; does not provide highest water quality source; use of facilities requires admission to Northern Colorado Water Conservancy District (NCWCD); Thornton's application to become a member of NCWCD would require a Federal permit; pipeline to Thornton would be subject to Boulder County 1041 regulations. Produces inadequate supply to meet projected water needs over the project planning period, even with addition of new storage and favorable hydrologic conditions; poorest water quality relative to other conceptual project configurations; uncertainty of future river administration reduces reliability; new diversions and storage facilities will require a Federal permit. 1 2 4 3 The result of the concept evaluation determined that Concept 1, a pipeline from the WSSC reservoirs, is the only alternative that can deliver the needed quality and quantity of water in the required timeframe. It should be noted that Concept 1 does not alter the pattern of historic water diversions. Diversions began from the Cache Ia Poudre River into the WSSC system in 1882. Preferred Corridor Evaluation Before conducting public outreach, which is not required by Weld County's USR permit application process, and to determine the alternative corridor least impactful to local communities, Thornton conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. Input from local governments and agencies was utilized in developing alternative corridors and identifying the preferred corridor. TWP USR PA -1 SECTION C SUMMARY STATEMENT C-19 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 An evaluation area was established for developing alternative corridors. The evaluation area consists of a 3- to 51/2 -mile wide path from WSSC Reservoir No. 4 to Thornton. The evaluation area limits are described as follows: • The east/west portion of the evaluation area is approximately 3 miles wide, centered near WSSC Reservoir No. 4. The evaluation area extends from Larimer County Road 19 east to Weld County Road 17 V2. The southern extent of the evaluation area is bounded by Douglas Road and the northern extent by Larimer County Road 60/Weld County Road 96. • The north/south portion of the evaluation area is approximately 4 to 5 %z miles wide. It extends from Larimer County Road 60/Weld County Road 96 south to 168th Avenue. The evaluation area is bounded by I-25 on the west and Weld County road 171/2 on the east. Alternative corridors within the evaluation area were identified using readily and publicly available geographic information system (GIS) data. Guidelines used to identify the alternative corridors include the following: • Input from potentially affected local governments • Minimizing impacts to ROW • Minimizing impacts to water bodies and wetlands • Bypassing geological hazardous areas • Minimizing impacts to environmentally sensitive areas such as open space or conservation areas • Minimize impacts to congested areas, typically in developed, densely populated areas • Utilizing Thornton -owned property • Following ROW/easements/property lines Four 1/4 -mile wide alternative corridors were initially developed based on input received from local government outreach. These four alternative corridors were analyzed using non -economic data to determine the preferred corridor. The non -economic criteria and method of measurement used in the evaluation of alternative corridors included the following: • Local Government Preference - Rating based on compliance with local government preferences • Geologic Hazards - Estimated length within areas identified as having mine subsidence • Community Impact- Number of local governments crossed • Wetland/Riparian Crossing - Estimated length of wetland/riparian areas crossed • Floodplain Crossings - Estimated length of floodplain areas crossed • Parcel Owners - Number of unique parcel owners crossed • ROW - Estimated possible length of water pipeline in ROW Information regarding the preferred corridor alternative analysis and selection process is included in Technical Report, Thornton Water Project, Reach 2 Alternative Corridors Analysis, September 2016 (see Appendix A). The location of the preferred corridor was based on the TWP purpose and need, as well as information and guidance received from Weld County Public Works and Planning staff, Firestone, Frederick, Dacono, and others. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Preferred Route Development After the preferred corridor was established, specific alignments within the preferred corridor were identified to determine the preferred route. Thornton established criteria, reviewed existing infrastructure and encumbrances, and considered input from property owners, Weld County Public Works staff, and local governments to determine the preferred route. Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. Thornton understands that, if the TWP PA -1 is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. Other local governments have variously indicated preferences for the water pipeline to be inside or outside of ROW in their GMA; however, Weld County's preference in unincorporated Weld County takes precedence. Thornton reviewed GMA boundaries and transportation master plans for Dacono, Frederick, and Firestone, and coordinated with these local governments to determine the extent of future ROW within GMA boundaries. Thornton will coordinate the location of the water pipeline with these municipalities and Weld County as appropriate. Where practicable, the criteria for developing the preferred route in unincorporated Weld County included: • Be outside current and future planned road ROW. • Be adjacent to roads, current or future road ROW, existing utility easements, and property lines. • Minimize impacts to agricultural use. • Consider property owner preference. • Minimize impacts to existing structures. • Cross waters, irrigation ditches, roads, and railroads perpendicular to the feature. • Minimize road crossings. • Minimize impacts to environmental and cultural resources. • Minimize impacts to open lands/conservation easements. • Provide a sound engineering solution. Thornton reviewed aerial photography and performed site reconnaissance of the preferred corridor to develop a draft route based on the criteria listed above. Title records were reviewed and rights of entry were requested for properties crossed by the draft route to determine existing encumbrances on these properties. Next, Thornton began discussions with property owners and conducted environmental surveys and planimetric survey of property boundaries, existing infrastructure, and utilities on the properties for which written right of entry was granted to Thornton by the property owner. As part of the surveys, existing easement locations and easement restrictions were identified. Thornton approached easement holders without exclusive rights to discuss opportunities for shared and/or overlapping easements. During discussions with property owners, Thornton reviewed possible water pipeline locations to minimize impacts. Based on information obtained from surveys, easement holders, and property owner discussions, the draft route was revised and refined to reflect the preferred route for the TWP PA -1 as presented in this Application and shown in Figure C.2.b.1. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 C.2.c. Procedures to be employed in mitigating any adverse impacts of the proposed routes or sites. This section addresses WCC Section 23-2-510 C.2.c and the criteria described in WCC Sections 23-2-480 A.3, 23-2-480 A.4, 23-2-480 A.5, 23-2-480 A. 7, 23-2-480 A.8, 23-2-290 C, 23-2-290 D, 23-2-290 E, 23-2-290 G, and 23-2-290 H. The criteria used for developing the preferred route described in Section C.2.b was implemented to minimize impacts to Weld County's future plans, property owners, agricultural use, traffic, irrigation ditches, existing infrastructure, and environmental and cultural resources. Mitigation measures for resources are presented throughout this Application as indicated in Table C.2.c. TABLE C.2.c Impacted Existing Condition Reference to Mitigation Measures Location in Application Impacted Existing Condition Impact Application Section Reference Private Property 100 -Year Floodplains Air Quality Cultural Drainage and Erosion Geological Hazards Groundwater Jurisdictional Waters Noise Public Health and Safety Special Status Species Transportation Vegetation Wildlife Mitigable Mitigable Mitigable No Significant Impact Mitigable Mitigable Mitigable No Significant Impact Mitigable Mitigable Mitigable Mitigable Mitigable Mitigable Section C.2.a, Land Acquisition; Section C.2.b, Preferred Route in Weld County Future ROW and Preferred Route in Weld County ROW; C.2.d, Construction Activities Attachment C.2.c-1, Floodplain Information Attachment C.2.c-2, Air Quality Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-3, Drainage and Erosion Control Information Attachment C.2.c-4, Geologic Hazards Information Attachment C.2.c-5, Groundwater Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-6, Noise Information Section C.2.f Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-7, Traffic Narrative Appendix B, Natural and Cultural Resources Assessment Appendix B, Natural and Cultural Resources Assessment TWP USR PA -1 SECTION C SUMMARY STATEMENT C-22 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Private Property Thornton's land services representatives negotiate the purchase of easements where needed based on fair market value. As part of the process to negotiate the purchase of easements where needed, Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain water pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. In some cases, routing the water pipeline in current or future ROW is proposed to minimize impacts to development, gravel mining operations, or other activities. Additional information regarding these locations is included in Section C.2.b. The area disturbed for constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, thus minimizing long-term impacts. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. Property owners will be compensated for compensable damages, as well as receiving fair market value for easements. C.2.d. An outline of the planned construction, including startup and commissioning schedule, to include the number of stages and timing of each. This section addresses WCC Section 23-2-510 C.2.d, and the USR Questionnaire, Planning 5, 6, 7, 8. A final schedule for construction of the TWP PA -1 has not yet been developed. It is anticipated that construction of the TWP PA -1 will take approximately 33 months, weather permitting. Design activities of the TWP PA -1, including procurement of a design consultant, will commence after approval of the Application and are anticipated to start in 2019. Conditions of approval will be implemented into the design documents as required. Contractors will be selected after design activities are complete. The bid phase to procure contractors for the TWP PA -1 is anticipated to be complete by 2021 The TWP PA -1 contractors will be required to prepare a detailed schedule for their respective packages and this can be provided to Weld County. The timeline for the TWP PA -1 extends from 2016 for permitting development to 2025 for startup operations. Figure C.2.d.1 presents the general timeline for major activities. Prmtt,nk •nd land AcAtqvnit mon Desten Centtrumen Restorat.on and Sl.wardthip 2016 2017 2018 2019 TWP PA -1 TIMELINE 2020 2021 2022 2023 2024 2025 Project Startup Project Operational FIGURE C.2.d.1 TWP Timeline TWP USR PA -1 SECTION C SUMMARY STATEMENT C23 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Construction Activities The TWP PA -1 may be constructed in multiple construction packages. Construction activities for TWP PA -1 are proposed to begin in 2021 and end in 2023, and operation of the TWP system is scheduled to begin in 2025 after construction of all TWP packages are complete. Work on multiple construction packages may occur concurrently with multiple crews of 10 to 55 workers each. At the peak of construction, approximately 80 to 100 workers could be required at multiple sites along the TWP PA -1. Construction work hours will typically be from 7 a.m. to 7 p.m. Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities, such as hydrostatic testing, require 24/7 operation, and shift work may be required. However, shifts are not anticipated for construction on a day-to-day basis. The following are major activities involved in construction in typical sequence: • Traffic control installation • Survey • Stormwater best management practice (BMP) and access installation • Site clearing • Stage materials/staging area setup • Excavate the water pipeline trench/bore pit • Water pipeline installation • Backfill the trench/bore pit • Conduct pressure testing • Clean up • Restore ground surface • Road restoration • Revegetation • Ongoing stewardship Figure C.2.d.2 shows some of the typical construction activities that occur within the work limits. Work limits include the permanent and temporary construction easements and the Weld County approved ROW. TWP USR PA 1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 - r r "'�'daeice tiLnTe Stage Construction Clear & Grub • Pipe Segments 45'-S0' Typical Topsoil Stockpile Excavated Material Excavate & Place Pipe Bedding Material Insta I Pipe in Trench Final Grade. Backfill 8 Compact Restore to Pre -construction Conditions C Work Limits FIGURE C.2.d.2 Construction Activities Traffic Control Installation This section addresses the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. Where the water pipeline location is in ROW, as approved by Weld County, traffic control measures will be implemented before work starts in the ROW. Thornton places a high priority on safety during construction. The TWP PA -1 contractors will implement traffic management plans based upon local traffic control requirements and general safe operating practices. Thornton and/or the TWP PA -1 contractors will develop traffic control plans that include adequate levels of service and safety measures for construction. Proper signage, flaggers, lighting, speed limits, work hours, postings, notifications, and other precautionary safety measures will be taken to protect the residents of Weld County and the TWP PA -1 contractors' employees. Access will be maintained to local area residents. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders and school districts as necessary. Survey The water pipeline location will be surveyed and staked to ensure that the water pipeline will be installed as indicated in the contract documents. Work limits will also be surveyed to establish the boundaries that the TWP PA -1 contractors are allowed to work in. Work limits include the permanent and temporary construction easements and the Weld County approved ROW. Stormwater BMP and Access Installation This section addresses the criteria described in WCC Sections 23-2-480 A.8 and 23-2-490 H. Surface drainage stormwater BMPs will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and Colorado Department of Public Health and Environment (CDPHE) construction stormwater permits and stormwater management plans (SWMPs) will include detailed descriptions of BMPs that will be used to protect surface hydrology and water quality. Thornton has met with Weld County Public Works staff to coordinate access locations from existing Weld County roads. Thornton's TWP PA -1 contractors will obtain access permits from Weld County TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 or other agencies for any necessary temporary or permanent access locations as applicable. Stabilized construction entrances/exits will be installed for access from existing roads. Site Clearing After stormwater BMPs are in place, ground disturbing activities will commence. This includes clearing and grubbing the site. As applicable, pavement and vegetation will be removed from the site and will be properly disposed of. If top soil exists, it will be removed and stockpiled separately away from other excavated material. Surface disturbance will be limited to the ROW approved by Weld County, and the permanent and temporary easements. Stage Materials/Staging Area Setup At this time, Thornton anticipates using up to 6 temporary staging areas within unincorporated Weld County during construction of the TWP PA -1. Each staging area will occupy approximately 2 acres of land. Staging areas will be used for material storage, parking, equipment storage, field offices, and storage of excavated materials. Parking and vehicle storage during construction will be primarily on property within the permanent or temporary easement or at temporary staging areas. Thornton plans to off-load and temporarily store the water pipe along the easement as it is delivered when possible to reduce the number of trips required for material delivery until the water pipe is placed in its permanent buried location. If needed, stockpiling of water pipe could take place within the temporary and permanent easement or at temporary staging areas. Stockpiling in lieu of stringing the water pipe will only be conducted where additional space is required. Preliminary anticipated staging locations in unincorporated Weld County are shown on Figure C.2.d.3. Some of these areas could be used for stringing water pipe or as temporary staging areas. Thornton will negotiate with property owners or agencies for the short-term use of temporary staging areas. The TWP PA -1 contractors could negotiate agreements with property owners for additional staging areas if additional area is required for construction operations as determined by the TWP PA -1 contractors. Excavate the Water Pipeline Trench/Bore Pit It is anticipated that excavated material will be temporarily stored within the permanent or temporary easement adjacent to the trench. Topsoil will be stripped and stored separately from excavated trench materials. If additional space is required, excavated materials could be stored in temporary staging areas. Water Pipeline Installation This section addresses the criteria described in WCC Sections 23-2-480 A.7 and 23-2-490 G. It is anticipated that both open -cut and trenchless construction methods will be used for water pipeline installation. Whether employing open -cut or trenchless construction methods, the installation and construction methods employed will follow standard industry practices designed to produce a safe, environmentally sound, and quality operation. TWP USR PA -1 SECTION C SUMMARY STATEMENT Thornton Water Project ZINNIA AVE a CR 8 73 ERIE -HY CC ERIE, L. H' ..1P,1ntb Dp CSR 4 1N,• `1 /Fe io 5 160TH AVE cr4Thornton AUAN.S AVE CR16 . CR 12 DACONO rr THbRNTO CITY OF THORNTON COLORADO '2450 WASHINGTON ST THORNTON. CO 80241 2405 '2/20/2018 0 FIRES TONE 80 'HD ELM Si NAPLE PINE CONE AYE • 6H: CUJRE AVE '5751 4T.4 ST SIM5r Jws 52 CR 8 BROOMFIELD NORTHGLENN S 06 • nch = 1 2 miles 12 5 CR28 CR 16 CR14 CR4 171 y CR22 CR20 CR 18 PLATTEVILLE CR 24 TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Rght-al-Way TWP RA -1 Route n Unincorporated Weed County TWP PA -1 Route outside Unincorporated Weld County Miles —••— County Boundary R ver/Stream/Canal/Ditcn NTH Ay CR2 a _Q GRAND AV FORT LUPT ...�. •-••-•• j Lace/Resen or r Potenta: Stagging LOCat Or1 — t gi CR22 CR185 N art !6 CR 12 CRa CR42 CR 2.5 .. SASkUU1€ RR BRIGHTON / scs+4s' `$RODE s J Figure C.2.d.3 Potential Staging Locations x-... c w4 tn.< Cane cJo1 is u'S9OS T+CA'.1on %CR4% aaCa=C ASS OcOn SO' RV,t1 \GGi$A/A>< t•W.] .Sa lCNACE VA -?t C$C %aStAG.`C. 0G1O`d VD lst-r 2-vt,-- USAW THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 For open -cut construction, the water pipeline trench is anticipated to be a minimum of 8 V2 feet deep with an approximate top width of approximately 19 feet. The water pipeline will sit at least 4 feet below the final grade. A typical trench profile and easement section abutting future road ROW is shown in Figure C.2.d.4. 100' (MAJOR COLLECTOR) 120' (ARTERIAL) FUTURE PLANNED ROW 60' (ARTERIAL) 50' (MAJOR COLLECTOR) CL TO FUTURE ROW 60' CURRENT ROW (TYP) 30' CL TO CURRENT ROW TYP CENTERLINE (CL) ROAD / PROPERTY LINE - w I- 50' PERMANENT EASEMENT 40' TEMPORARY CONSTRUCTION EASEMENT 25' 15'-17' PIPE STAGING 2T 28'-30' 16'-20' EXCAVATED ONSTRUCTION VARIES PIPE CL MATERIAL OPERATIONS I'm w CI_ 4'- 5' PIPELINE BURY DEPTH, MIN TRENCH SLOPE 11 TO 15.1 WATER PIPELINE i _ H8'TYP 9'-6" TYP FIGURE C.2.d.4 Example Open -Cut Construction Section Trenchless construction methods could include methods such as tunneling or auger boring techniques to install the water pipeline. This means of construction is used to minimize ground disturbance at locations such as environmentally sensitive areas including Waters of the United States (WOTUS) (jurisdictional waters), irrigation ditches and at road crossings not allowed by Weld County to be open cut. After BMP installation, clearing and grubbing, and delivery of materials to the tunneled location, a bore pit will be excavated on one side of the area to be tunneled and a receiving pit will be excavated on the opposite side. The water pipeline will be tunneled from the bore pit to the receiving pit. It is anticipated that the water pipeline will typically be installed inside a steel casing pipe that is itself installed using trenchless construction methods. The casing pipe will be approximately 12 to 18 inches larger in diameter than the water pipeline and will normally be buried at a depth approximately 2 times the diameter of the casing, which will be approximately 10 to 11 feet below the lowest final grade elevation. Settlement monitoring will be conducted along the trenchless route to confirm that settlement has not occurred. Thornton will consult with affected property owners, Weld County, and applicable agencies such as the U.S. Army Corps of Engineers (USACE) to determine where trenchless construction methods are needed. Table C.2.d presents the probable water pipeline installation construction methods that are expected to be utilized at existing features. 1WP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE C.2.d Probable Water Pipeline Construction Method at Defined Existing Features Existing Feature Crossing Probable Water Pipeline Installation Construction Method Comment Jurisdictional Waters Federal Interstates and State Highways Irrigation Ditches Weld County Paved Roads Weld County Gravel Roads Driveways within Property Existing Utilities Floodplains Trenchless Construction Trenchless Construction Open -Cut or Trenchless as Directed by the Ditch Company or Other Requirements Trenchless as Required by Weld County Open -Cut Construction Open -Cut or Trenchless as Negotiated with Property Owner Open -Cut Construction Open -Cut Outside Jurisdictional Waters and Trenchless within Jurisdictional Waters USACE will be consulted before construction, and concurrence with USACE will be obtained that no permit is required for crossing. A Colorado Department of Transportation Utility/Special Use Permit will be obtained before construction. Crossing agreements will be obtained from the ditch company. Coordination with the ditch owner will take place to minimize impacts to ditch operations. Weld County approval and permits will be obtained before construction. The TWP will adhere to Weld County standards. Weld County approval and permits will be obtained before construction. The TWP will adhere to Weld County standards. Timing of constructing driveway crossings will be coordinated with property owner. License agreements/permits will be obtained as required from utility owner. Minimum clearance requirements will be determined during final design. Floodplains typically extend outside the jurisdictional water (ordinary high water mark). Areas outside the jurisdictional water could be constructed using open -cut construction methods. Backfill the Trench/Bore Pit After the water pipeline is installed, the trench/bore pit will be backfilled using appropriate backfill materials and compaction techniques, including use of a backhoe and vibration equipment to obtain proper soil compaction. TWP USR PA -1 SECTION C SUMMARY STATEMENT C-29 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Conduct Pressure Testing Hydrostatic pressure testing will be completed to verify that the water pipeline is capable of withstanding the designed maximum allowable operating pressure. It is anticipated that the water pipeline will be tested in sections. Where feasible, hydrostatic test water will be routed from one section of the water pipeline to another to recycle that water. Clean Up Clean up of areas disturbed during construction will be conducted before final grading and revegetation. Clean up includes removing: • BMPs not needed for revegetation activities • Excess materials • Temporary fencing, if used • Temporary facilities • Large stones and other debris Restore Ground Surface Land will be restored to pre -construction grades. Road Restoration ROW will be restored to pre -construction conditions and in accordance with Weld County standards or other standards as applicable. Revegetation Disturbed areas will be revegetated after construction where appropriate. Restored vegetation will be comparable to existing vegetation. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner preferences or regulatory requirements will be specified in the SWMP for the revegetation of disturbed areas. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. Ongoing Stewardship Surface areas disturbed by construction will be monitored after construction and Thornton will continue to maintain the site until the area is restored to meet property owner preferences and regulatory requirements. C.2.e. Information of any public meeting conducted, to include the location, date, time, attendance and method of advertising. This section addresses WCC Sections 23-2-470 B.4 and 23-2-510 C.2.e and USR Procedural Guide Checklist, a community meeting is encouraged. Public Outreach Public outreach includes a TWP website, TWP e-mail address, and TWP phone line, Open Houses, and stakeholder outreach. See Appendix C for additional information on public outreach and Appendix D for additional information on stakeholder outreach. TWP USR PA -1 SECTION C SUMMARY STATEMENT ;;1 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TWP Website, TWP E-mail, and TWP Phone Line Public outreach is not required by Weld County's USR permit application process. However, to introduce the public and potentially affected property owners to the TWP, the TWP website, TWP e- mail address, and TWP phone line (www.ThorntonWaterProject.com, info@ThorntonWaterProject.com, and 720-977-6700) launched on October 28, 2016. The website, e-mail, and phone line provide opportunities for questions and the collection of input from the public and potentially affected property owners. Open Houses Public outreach is not required by Weld County's USR permit application process. However, to introduce the public and potentially affected property owners to the TWP, respond to questions, and to collect input from the public and potentially affected property owners, the following Open Houses were held in Larimer and Weld Counties: • November 14, 2016 at Southwest Weld Services Complex, 4209 Weld County Road 24 %2, Longmont • November 16, 2016 at Poudre Valley REA, 7649 REA Parkway, Fort Collins • December 6, 2016 at Larimer County Courthouse, 200 West Oak Street, Fort Collins • December 8, 2016 at Johnstown Senior Center, 101 Charlotte Street, Johnstown A total of 1,270 invitations to the Open Houses were sent to Weld County and Larimer County property owners within the initial proposed corridor and within Weld and Larimer County's major land use permit notification areas. Of the invitations sent, a total of 423 Weld County property owners within the initial proposed corridor and within 150 feet of the initial proposed corridor were mailed invitations analogous to WCC Section 23-2-470 B.5, notice of application to surrounding property owners within 150 feet. Invitations were also sent to local municipality representatives. After the first two Open House events, a second invitation was sent to remind invitees that two Open Houses were still forthcoming. A total of 146 attendees signed in and provided addresses at one or more of the four Open Houses. Display boards and maps that included information on the following topics were exhibited at the Open Houses: • Overview • Purpose and Need • History • Timeline • Permitting • Land Acquisition • Construction • Corridor Maps Frequently asked questions and land acquisition brochures were available. Open House attendees were offered comment forms to provide feedback regarding route alternatives, project concerns and suggestions, and general comments. Attendees were given the opportunity to sign up for TWP updates. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The majority of attendees were interested in reviewing the initial proposed corridor. Large maps were exhibited by the TWP Team so that attendees could closely identify where the initial proposed corridor was located in proximity to their property and how the TWP could affect them. It was explained that the final alignment has not yet been developed and that one of the objectives of the Open Houses was to obtain feedback from attendees. Open House documents can be found in Appendix C. Stakeholder Outreach In an effort to determine the alternative corridor least impactful to local communities in Northern Colorado, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the initial outreach meeting with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. For information on the TWP corridor development process, see Appendix A. Secondary outreach meetings were conducted with local governments and agencies that had incorporated areas or GMAs overlapping alternative corridor locations to present the initial three alternative corridors. During this second round of outreach, additional feedback was collected from the local governments and agencies and, as a result, a fourth alternative corridor, was developed as the local government's preferred corridor. Outreach meetings were conducted with the following local governments: • Berthoud • Dacono • Firestone • Fort Collins • Frederick • Greeley • Johnstown • Larimer County • Loveland • Mead • Milliken • Timnath • Weld County • Wellington • Windsor Thornton has been in discussions with USACE beginning in 2014 to provide information on the TWP to USACE staff. Thornton will continue consulting with USACE and plans to submit a jurisdictional determination request to USACE before initiating design activities to determine which areas in preferred route are jurisdictional waters. Design will include trenchless construction methods at jurisdictional water crossings. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Additional outreach and coordination activities included: • Meetings with local major utility providers. • Meeting with the CDOT. • Meeting with Colorado Parks and Wildlife (CPW). • Presenting the TWP at the Energy Industry Working Group (Weld County oil and gas companies) on December 15, 2016. • Sending letters to initiate coordination activities to local irrigation and ditch companies, utility providers, wildlife agency outreach (CPW and U.S. Fish and Wildlife Service [USFWS]), Natural Resources Conservation Service (NRCS), and local fire districts. Stakeholder outreach information is included in Appendix D. C.2.f. A description of the hazards, if any, of fire, explosion and other dangers to the health, safety and welfare of employees and the general PUBLIC. This section addresses WCC Section 23-2-510 C.2.f and the USR Questionnaire, Environmental Health 2, 4, 5, and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. Environmental Hazards Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Construction, operation, and maintenance activities will follow best management practices for the management of wastes to avoid and minimize impacts from potential spills or other releases to the environment. These practices are discussed in greater detail below. Adverse impacts from the release of construction or operations wastes are not expected. Hazardous Materials and Waste Management Mitigation Measures Construction, operation, and maintenance activities involving Thornton or the TWP PA -1 contractors bringing any hazardous materials onto the site will comply with applicable federal, state, and local laws and regulations regarding the handling, storage, disposal, transportation, and use of hazardous substances. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws. If trenching activities uncover previously unknown areas of contamination that are apparent, work will be stopped until the party responsible for such contamination has properly managed and/or disposed of such contamination. Construction staging areas will be located and arranged in a manner to preserve trees and vegetation to the extent feasible. Excavated material or other construction materials will not be stockpiled or deposited near or on stream banks or other watercourse perimeters where they could be washed away by high water or storm runoff, or could encroach upon stream banks. Best management practices will be implemented for stormwater management. A summary of BMPs to TWP USR PA -1 SECTION C SUMMARY STATEMENT ` 3 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 protect water resources from potential contamination is provided in Attachment C.2.c-3, Drainage and Erosion Control Information. Fueling Mitigation and Safety Measures If possible, fueling requirements will be met before arrival at the construction site. Heavy equipment left on site for construction activities will require onsite fueling at staging areas or the construction site. No bulk fuel storage is anticipated to occur on site. Fueling vehicles will be equipped with spill kits and fire extinguishers, and personnel will be properly trained in spill prevention, control, and countermeasures. To minimize the potential for a spill during fuel transfers and be prepared in the event of a spill, the following measures, as provided in the Code of Colorado Regulations (CCRJ and Code of Federal Regulations [CFR], will be followed during loading/unloading of fuel: • Keep fire away while loading/unloading. Persons in the vicinity are forbidden to smoke, light matches, or carry any flame or lighted cigar, pipe, or cigarette. 49CFR 177.834(c, d). • Fuel will not be loaded/unloaded from any motor vehicle while the engine is running. The exception is when the engine of the vehicle is to be used in the operation of the pump. 49CFR 177.837(a). • The fuel tank records will be reviewed to determine the theoretical fuel tank level. 7CCR 1101- 14 S2-3-1 and 52-4-2(a)(2.) • The fuel tank level gauge will be inspected to determine the actual fuel tank level before u nloading takes place. (Note: Any fuel tank level discrepancies will be resolved before hooking u p to the fuel tank.) 7CCR 1101-14 S2-3-1 & S2 -4-2(a)(2). • The supply truck driver will observe the transfer during the entire operation. 49CFR 177.834(i)(2). • Once the truck is in position, its emergency brake will be applied and reasonable precautions will be taken to prevent motion of the truck during unloading (example: utilize wheel chocks when parked on an incline). 49CFR 177.834(e). • Signs must be posted that remind drivers not to pull away before detaching hoses. 40CFR 112.7(h)(3). • Containers and cargo tanks will be grounded before and during transfer. 49CFR 177.837(b) & (c). • The transfer line must be properly disengaged, and the valves and piping of both the fuel tank and truck must be checked for leaks before allowing the truck to leave the site. (40CFR 112.7 h(4) for trucks). Traffic and Roads and Mitigation Measures Impacts caused by construction equipment and activity on Weld County roads will be short term during construction. Access will be maintained for local area residents. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. Thornton places a high priority on safety during construction. Thornton will coordinate with local school districts regarding construction and haul routes and school bus traffic. The TWP PA -1 contractors will implement traffic management plans based upon local traffic control requirements and general safe operating practices. Proper signage, flaggers, lighting, speed limits, work hours, postings, notifications, and other precautionary safety measures will be taken to protect the residents of Weld County and the TWP PA -1 contractors' employees. Emergency vehicle access needs will be TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. The water pipeline construction will utilize trench less construction methods under Weld County roads where required by Weld County, resulting in little to no disruption to traffic at those locations. Temporary traffic delays and detours will be needed where the water pipeline is installed by open - cut construction across existing roads. Traffic disruption will be temporary, and will cease after construction. Traffic control plans will be implemented before construction, subject to approval and acquisition of permits from Weld County Engineering. Additional information and mitigation measures are presented in Attachment C.2.c-7, Traffic Narrative. Operations One of the greatest risks to buried pipelines is excavation by individuals unaware of the location of a pipeline. Pipeline markers will be installed in the pipeline permanent easement to indicate that a water pipeline is buried nearby. The markers will identify the water pipeline, Thornton as the pipeline operator, the operator's 24 -hour emergency contact number, and the area's utility notification number. Marking tape indicating that a water pipeline is buried in the location will also be installed above the water pipeline for the entire length of the water pipeline. The majority of the water pipeline in unincorporated Weld County will be located within permanent easements. This approach reduces the probability that individuals could damage the water pipeline with ground - disturbing activities. The water pipeline will be designed and constructed to be water tight. Pipe materials will be required to undergo shop testing before installation as well as hydrostatic field testing after installation. The water pipeline and appurtenances will be coated and lined to prevent corrosion. As an additional safety measure, project components will be installed with cathodic protection, which will control the corrosion of a metal surface. Cathodic protection systems are commonly used to protect metallic water pipelines. C.2.g. A description of emergency procedures to be followed in case of a reported failure or accident involving the proposed PIPELINE — DOMESTIC WATER. Such outline shall include actions, if any, required of PUBLIC officials, including fire and police officials, and the names and telephone numbers of appropriate Company officials to notify in an accident or failure should occur. This section addresses WCC Sections 23-2-510 C.2.g and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. Thornton owns and operates an extensive network of water pipelines that deliver raw and finished water to Thornton facilities and customers in residential and business areas. Providing reliable water requires that Thornton have quick access to parts and equipment to maintain or repair pipelines and related facilities, and the same will apply to the TWP. The TWP pump stations will include emergency automatic shutdown control. Pump stations will undergo automatic controlled shutdown if a sudden pressure drop or increase occurs or sudden changes in water tank levels occur that indicate a water pipeline break, valve closure, or blockage. Pipeline markers will be installed in the pipeline permanent easement to indicate that a water pipeline is buried nearby. The markers will identify the water pipeline, Thornton as the pipeline operator, the operator's 24 -hour emergency contact number, and the area's utility notification TWP USR PA -1 SECTION C SUMMARY STATEMENT H THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 number. Marking tape indicating that a water pipeline is buried in the location will also be installed above the water pipeline for the entire length of the water pipeline. The operator at Thornton's Wes Brown Treatment Plant will be the emergency point of contact. The Wes Brown Treatment Plant is manned 24 hours a day, 7 days a week, 365 days a year and the telemetry for the TWP will be monitored at this location. Wes Brown Treatment Plant 3651 East 86th Avenue. Thornton, CO 80229-5201 Phone: 303-255-7720 The operator will be trained, qualified in day to day operation of the water pipeline and associated facilities, and in emergency response procedures. Administration of system shutdown will be feasible from the Wes Brown Treatment Plant and at the TWP pump stations. The operator will be able to monitor the operation of the water pipeline, pump stations, and other infrastructure. Monitoring of key parameters including pressures, flow rates, and water levels will occur. If these parameters, or other critically identified criteria fall outside of pre -determined normal operating allowances, warnings will be raised of potential operational upsets or pending emergency conditions, providing the operator with time to make corrections, if possible, to the system operation to clear the warning. If specified parameters, or critically identified criteria reach pre- determined set points within the system operation, automatic shutdown will occur. Dispatch of trained personnel to the site of the emergency will occur as needed and depending on the nature of the emergency, local emergency responders will be notified. If required, the water pipeline will be drained at blow -off assemblies and system repairs will be made as soon as feasible. Any vegetated areas disturbed during required repairs will be restored by the methods used during construction. The TWP PA -1 contractors will develop a safety plan that will include an emergency response plan for the construction phase of the TWP PA -1. The plan will be written to include identification of emergency response departments near the TWP PA -1 area, including how and when to communicate with emergency responders as applicable. C.2.h. A description of the method or procedures to be employed to avoid or minimize the impacts on irrigated agricultural land. This section addresses WCC Section 23-2-510C.2.h and the criteria described in WCC Sections 23-2-480 A.1 and 23-2-490 A. Criteria used for developing the water pipeline location included minimizing impacts to agricultural use. Thornton's land services representatives have worked with property owners along the TWP PA - 1 route to explain pipeline construction, operations, and maintenance activities and to determine the best location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize affecting the operation of irrigation equipment. The process to develop the water pipeline route was iterative, and are a result of negotiations with individual property owners or detailed land, utility, or resource surveys that revealed engineering or environmental constraints. Thornton's land services representatives negotiate the purchase of easements where needed based on fair market value. The easements will grant Thornton an area to construct, operate, and maintain the water pipeline, and property owners will maintain fee title to the land. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The predominant land use in the TWP PA -1 area, agricultural use, is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. Additional measures that will be implemented to minimize impacts to irrigated agricultural land include: • Stripping and storing topsoil separately from excavated trench materials • Seeding or leaving land fallow in accordance with the individual property owner's agreed -upon reclamation procedures following construction of the water pipeline. The TWP PA -1 will cross multiple irrigation ditches along the water pipeline route within unincorporated Weld County as presented in Table C.2.h. Thornton has begun outreach to each irrigation ditch company to begin coordination activities. Thornton will obtain appropriate agreements for each crossing before construction. No direct effects on water flow, quantity, quality, or timing in the irrigation ditches are anticipated. Crossings will be constructed using either trenchless or open -cut methods as required by the irrigation ditch company and during off season if required. TABLE C.2.h TWP PA -1 Irrigation Ditch Crossings Irrigation Ditch Name Irrigation Ditch Owner Last Chance Ditch and Inlet Ditch Lupton Bottom Ditch/Lupton Meadows Ditch Coal Ridge Ditch Standley Ditch and Standley Lateral Ditch Bull Canal/Bull Ditch Thompson Ditch Yoxall Ditch Elwood Ditch Laramie Seepage and Drainage Ditch Hanks Waste Ditch Last Chance Ditch and Reservoir Company Lupton Bottom Ditch Company New Coal Ridge Ditch Company Farmers Reservoir and Irrigation Company (FRICO) FRICO Big Dry Creek Ditch and Reservoir Company Howard Family No information; Historical structure only — no longer exists or has records, but has historical data (Elwood Ditch, Weld County Colorado, 2013. Retrieved from http://www.colorado- water.com/weld-county/ditches/elwood- d itch/0200814) Unknown Unknown TWP USR PA -1 SECTION C SUMMARY STATEMENT Cl! THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 C.2.i. A discussion of how the proposal conforms with the guidelines of Chapter 22 of this code and any other applicable code provision or ordinance in effect. This section addresses WCC Section 23-2-510 C.2.i, and the USR Questionnaire, Planning 2, 3, 4, 5, 6, Environmental Health 1, 2, 8, and the criteria described in WCC Sections 23-2-480 A.1 through 23-2-480 A.8 and 23-2-490 A through 23-2-490 H. The water pipeline and appurtenances will be buried with minimal above ground equipment. There will be minimal effects to the rural character of Weld County. Thornton will construct operate, and maintain the TWP PA -1 in a manner consistent with existing and planned land uses in Weld County. Thornton is committed to cooperating and coordinating with the agricultural community and industrial and municipal land owners in the vicinity. Guiding Principles WCC, Chapter 22, Comprehensive Plan (Comprehensive Plan), is intended to be used for the general purpose of guiding and accomplishing the coordinated, adjusted and harmonious development of Weld County. Thornton intends to comply with the guiding principles of the Comprehensive Plan relevant to the TWP PA -1. Private Property Rights Thornton will purchase easements through good -faith negotiations with property owners and will only use eminent domain when all other reasonable options have been explored Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. The process to develop the water pipeline route was iterative, and is a result of negotiations with individual property owners, or is a result of detailed land, utility, or resource surveys that revealed engineering or environmental constraints. Thornton is committed to working with property owners to determine the best location for the water pipeline. The TWP PA -1 is developed in a manner that is respectful of private property rights. Respect for Agriculture Tradition The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The agricultural land use in the TWP PA -1 area is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line, see Figure C.2.i.1 for a map of the zoning within TWP PA -1 within Weld County that is associated with this permit application. Fairness in the Land Use Change Procedure and Regulations Addressing Land Use Changes The TWP PA -1 will not require any land use or zone changes unincorporated Weld County. TWP USR PA -1 SECTION C SUMMARY STATEMENT Thornton Water Project ZINNIA AVE ;v. ih'56 ALPINE rfr 160TH AVE Z C TIPPLE PKWY ((mor1toi BROOMFIELD FIRESONE DA CON fis . ...- THORNT0N NORTHGLENN IRESTONE PINE to "•VE 16 1STSI CITY OF THORNTON COLORADO '2450 WASHINGTON ST THORNTON, CO 802412405 \1 0 0.6 1 s 2 Miles —. N w 11) `-'BRIGHT Tn°rnt°" TWP PA -1 Route 'I Unincorporated Wed County and Current or Future Road Rgnt-ot Way TWP PA -1 Route •n Unincorporated Weld County TWP PA 1 Route outside Unincorporated Weld County County Boundary TUC — R venStreani/Canal/Ditch Lake/Reserwr Weld County Zoning Agr'outture Commercial Estate Industrial Q PUD Res.denval CR 12 Corporate Boundary Brigntan Broomteld Dacono Erie Firestone Fort Lupton Fredenck Lorgnant Mead Northglenn Platteville Figure C.2.i.1 Zoning within TWP PA -1 9411 1.04\rC SO4 rwc4M '2120/2018 1 inch = 1.2 miles Ratroad >4G> cr TALC 040E4 M• ,PE 4l4rt1VGC4MA09 E*Nt:J AM* 90 /iG< %Colaet.o'ajo..G v<34 SL`4r'sp3 •!9 $c.<w .•J C.999 oft Cam CJo THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Recognition of Weld County's Diversity The TWP PA -1 represents a low -intensity land use that will be compatible with existing agricultural land use, low density residential development, open space, and other uses, and is otherwise compatible with Weld County's geographic, demographic, cultural, social and economic diversity. To determine the alternative corridor least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the initial outreach meeting with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems, including planned developments, for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. Outreach meetings were conducted with the following local governments: • Berthoud • Dacono • Firestone • Fort Collins • Frederick • Greeley • Johnstown • Larimer County • Loveland • Mead • Milliken • Timnath • Weld County • Wellington • Windsor Figure C.2.i.2 shows municipal and GMA boundaries within the TWP PA -1 route. Boundaries shown are based on GIS data collected in May 2018 from municipalities. Thornton recognizes that the energy industry is an essential industry in Weld County. As part of the coordination process for the TWP and to help minimize impacts to the energy industry, Thornton has presented the TWP at the Energy Industry Working Group (Weld County oil and gas companies) on December 15, 2016. In addition, outreach letters have been sent to initiate coordination of activities to oil and gas companies. Economic Growth The TWP PA -1 will not have a negative effect on local government or any other existing public facilities and services. The construction, operation, and maintenance of the underground water pipeline and associated facilities will not require any new public facilities or impact existing services such as police, fire, waste water, and healthcare. TWP USR PA -1 SECTION C SUMMARY STATEMENT Thornton Water Project ZINNIA AVE LR56.�` 119 L•NGMON 1 aR205 CR 8 75 ERIElaKieN CR 6 ERIE ALPINC a 160TH AVE v ADAMS AVE FIRESTONE GMA FIRES`TONE•�,F�REST0NE 80 * P DR S*ABLF AVE FREDERICK GMA FREDERICK BROOMFIELD 7/ DACONO NORTHGLENN •6.3TH A`.E THORNTON SAGE AVE 2ND ST r ELM Si I MAPLE PiNE CONE AVE DACONO GM4 a x N U W n CR 32 50 PLATTEVILLE ¶68TH AVE t • Q CR 145 CR 30 5 440 V) L' BRIGHTON \ CR185 FO'TLUPT.N q3mb, CITY OF THORNTON COLORADO 1.2450 WASHINGTON ST THORNTON. CO 80241-2405 1220/2018 0 N S 0.6 1 inch = 1 2 miles 12 Miles TWP PA. I Route in Unincorporated Weld County and Current or Future Road R,gnt-of-Way TWP PA ' Route .T1 a Unincorporated Weld County TWP PA -1 Route outside Ili� Unincorporated Weld County Railroad Rrver/St•eam/Canal/Ditch E i takeiueservor /14iH ST 9TH ST CR 25 SEUNE 4D BRIDGE ST Figure C.2.i.2 Town and GMA Boundaries within TWP PA -1 Rout -on .-3 _ 1*k .r.c Caen Cl i?*$M .-dihf ON.:\CiT.4as >CACt mein.()rat 4 56'-•E 0.M TT PorACASWAS>.n.E-J StiVIOlICE UOV SECT>ON iWG 04• CMAW)C) AEVOSJT • i'nn. •O Y)>AY THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The TWP PA -1 construction contractors will provide crews that are not anticipated to exceed approximately 100 workers at any one time. Some workers may reside outside of the local areas and will require lodging or temporary housing. The number of construction workers on site will depend on the contractors and the construction activity occurring during a particular time. Thornton will endorse hiring local workers. TWP PA -1 contractors and construction workers will likely support local businesses to meet a need for durable and nondurable goods and services. Goals and Policies The Comprehensive Plan contains policies to guide land use within unincorporated areas of Weld County. Many of the policies are directed toward industrial development, commercial development, or other areas not directly related to the TWP PA -1. For this reason, the following discussion addresses only those land use and other policies relevant to the TWP PA -1. The information provided herein demonstrates that the TWP PA -1 is consistent with the goals and policies of the Comprehensive Plan. A.Goal 1. Respect and encourage the continuation of agricultural land uses and agricultural operations for purposes which enhance the economic health and sustainability of agriculture. The TWP PA -1, within unincorporated Weld County is located in rural land use areas designated as agricultural zoning. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. Agricultural use within the permanent easement will be able to continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. Figure C.2.i.1 shows the zoning within the TWP PA -1 route within Weld County that is associated with this permit application. A.Goal 2. Continue the commitment to viable agriculture in Weld County through mitigated protection of established (and potentially expanding) agricultural uses from other proposed new uses that would hinder the operations of the agricultural enterprises. The TWP PA -1, within unincorporated Weld County is located in rural land use areas designated as agricultural zoning. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. Agricultural use within the permanent easement will be able to continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. A.Goal 3 County land use regulations recognize and respect the rights afforded by the State Constitution and associated statues of individually decreed water rights. Water rights are considered real property and should be protected as any other private property right. The TWP PA -1 will not impact water rights. The TWP is a water delivery system that will convey domestic water from the WSSC system, purchased by Thornton in the mid -1980's, from unincorporated Larimer County to Thornton. Water from the WSSC system purchased by Thornton from willing sellers has been decreed in Water Court for use in Thornton. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 A.Goal 4. Promote a quality environment which is free of derelict vehicles, refuse, litter and other unsightly materials. A.Policy 4.1. Property owners should demonstrate responsibility of ownership by minimizing safety and health hazards resulting from, but not limited to, unsafe or dangerous structures and noncommercial junkyards. Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Noxious weeds within the TWP PA -1 construction limits will be controlled using the Integrated Pest Management (IPM) methods as described by the Colorado Department of Agriculture (CDOA). Additional information on noxious weed management is included in Appendix B. A.Goal 8. A.Policy 8.1. Ensure that adequate services and facilities are currently available or reasonably obtainable to accommodate the requested new land use change for more intensive development. The land use applicants should demonstrate that adequate sanitary sewage and water systems are available for the intensity of the development. During construction, water may be purchased from local water providers for construction activities such as watering the construction site to minimize fugitive dust or hydrotesting the water pipeline. Contractors will provide bottled water, water cooler service, or other temporary source of drinking water during construction. Portable toilets will be used during construction. No additional level of service is anticipated to be required. A.Policy 8.3. The land use applicants should demonstrate that the roadway facilities associated with the proposed development are adequate in width, classification and structural capacity to serve the proposed land use change. The existing road network has adequate capacity to serve anticipated construction traffic needs, and no new roads or improvements to existing roads are anticipated to be necessary in unincorporated Weld County. After construction, the water pipeline and appurtenances could operate year-round, 24 hours a day; however, the water pipeline and appurtenances will be unmanned. The existing road network has adequate capacity to serve anticipated TWP PA -1 operation traffic needs. It is anticipated that normal operations could include up to two TWP operators traveling in one pickup truck daily along the water pipeline route for a visual inspection and maintenance activities during the hours of 8 a.m. to 5 p.m. Up to twice per year, it is anticipated that TWP operators will enter vault and manhole appurtenances to exercise valves and conduct routine maintenance of equipment. To the extent practicable, visual inspections could be from public roads to minimize impacts to property owners. In case of emergency, the operators may be on -site outside of the normal operating hours. Consequently, there will be minimal effects on the volume of traffic on local streets. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 A.Policy 8.4. The land use applicants should demonstrate that drainage providing storm water management for the proposed land use change is adequate for the type and style of development and meets the requirements of county, state and federal rules and regulations. Construction of the water pipeline will be via open cut and trenchless methods. In areas where open cut methods will be employed, the ground will be restored to pre -construction elevations restoring the historical drainage paths across the permanent easement. In the areas where trenchless methods will be employed the historical drainage paths will be undisturbed. Surface drainage BMPs implemented during construction will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and CDPHE construction stormwater permits will be obtained before construction, and the associated SWMPs will include detailed descriptions of BMPs that will be used to control erosion. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. A.Policy 8.5. The land use applicants should demonstrate that public service providers, such as but not limited to schools, emergency services and fire protection, are informed of the proposed development and are given adequate opportunity to comment on the proposal. No additional level of service from Weld County public service providers is anticipated to be required. To minimize the impacts of construction on the local community, Thornton will coordinate with Valley RE -1, Saint Vrain Valley School District, and Fort Lupton RE -8 School District regarding construction and haul routes and school bus traffic. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. A.Policy 9.4. Consider conservation of natural site features such as topography, vegetation and water courses, in conjunction with the conversion of land uses. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize effects to natural resources such as jurisdictional waters, including streams, rivers, lakes, and wetland areas. The area disturbed for constructing the water pipeline will be restored to pre - construction conditions, including grade and vegetation, thus minimizing long-term impacts. The majority of the impacts on vegetation will be temporary during construction of the water pipeline and long-term impacts to native vegetation communities are not expected. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. Restored vegetation will be comparable to existing vegetation. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner's preferences and regulatory requirements will be specified in the SWMP for the revegetation of disturbed areas. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Based on site visits conducted in 2016 and 2017 along publicly accessible areas and using Google Earth imagery, six broad vegetation communities within the TWP PA -1 were identified and are as follows: • Mixed upland • Nonnative upland • Riparian • Wetlands • Agricultural lands • Developed/disturbed areas Water pipeline crossings of high -quality vegetation such as wetlands or riparian communities will be constructed using trenchless construction methods. Additional information on existing vegetation is included in Appendix B. A.Policy 9.5. Applications for a change of land use in the agricultural areas should be reviewed in accordance with all potential impacts to surrounding properties and referral agencies. Encourage applicants to communicate with those affected by the proposed land use change through the referral process. The water pipeline and fiber optic cable will be compatible with adjacent land uses because they will be buried at a depth sufficient to prevent interference with anticipated land uses. The TWP PA -1 is located in and adjacent to agricultural land use areas. Agricultural use within the permanent easement can continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The TWP PA -1 is not anticipated to impact standard agricultural practices once the water pipeline is installed. Thornton will coordinate placement of the water pipeline and appurtenances, including bury depth, with individual property owners to minimize impacts to property operations. To introduce the public and potentially affected property owners to the TWP, respond to questions, and to collect input from the public and potentially affected property owners, Thornton conducted a series of Open Houses in November and December 2016. To introduce the public and potentially affected property owners to the TWP, the TWP website, TWP e-mail address, and TWP phone line (www.ThorntonWaterProject.com, info@ThorntonWaterProject.com, and 720-977-6700) launched on October 28, 2016. The website, e-mail, and phone line provide opportunities for questions and the collection of input from the public and potentially affected property owners. To determine the alternative corridor least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the outreach meetings with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. Outreach meetings were conducted with the following local governments: • Berthoud • Dacono • Firestone TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 • Fort Collins • Frederick • Greeley • Johnstown • Larimer County • Loveland • Mead • Milliken • Timnath • Weld County • Wellington • Windsor Thornton has been in discussions with USACE beginning in 2014 to provide information on the TWP to USACE staff. Thornton will continue consulting with USACE and plans to submit a jurisdictional determination request to USACE before initiating design activities to determine which areas in the TWP PA -1 route are jurisdictional waters. Design will include trenchless construction methods at jurisdictional water crossings. Additional outreach and coordination activities included: • Meetings with local major utility providers. • Meeting with CDOT. • Meeting with CPW. • Presenting the TWP at the Energy Industry Working Group (Weld County oil and gas companies) on December 15, 2016. • Sending letters to initiate coordination activities to local irrigation and ditch companies, utility providers, wildlife agency outreach (CPW and USFWS), NRCS, and local fire districts. UD.Goal 5. The County and municipalities should strive to coordinate urban land use planning in cooperative planning areas, including such items as development policies and standards, zoning, street and highway construction, open space, public infrastructure and other matters associated with urban development. To determine the alternative corridor least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the outreach meetings with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. Thornton understands that, if the TWP PA -1 is located parallel to and within the Weld County ROW, then use of that ROW will required Weld County approval. Other local governments have variously indicated preferences for the water pipeline to be inside or outside of ROW in their GMA; however, Weld TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 County's preference in unincorporated Weld County takes precedence. Thornton reviewed GMA boundaries and transportation master plans for Dacono, Frederick, and Firestone, and coordinated with these local governments to determine the extent of future ROW within GMA boundaries. Thornton will coordinate the location of the water pipeline within these municipalities and Weld County as appropriate. UC.Goal 2. Maintain the rural character of the unincorporated communities. The water pipeline and fiber optic cable will be compatible with adjacent land uses because they will be buried at a depth sufficient to prevent interference with anticipated land uses. The TWP PA -1 is located in and adjacent to agricultural land use areas. Agricultural use within the permanent easement can continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The TWP PA -1 is not anticipated to impact standard agricultural practices once the water pipeline is installed. Thornton will coordinate placement of the water pipeline and appurtenances, including bury depth, with individual property owners to minimize impacts to property operations. UC.Goal 4. Promote a quality environment which is free of unsightly materials, including but not limited to derelict vehicles, refuse, and litter. UC.Policy 4.1. Property owners should demonstrate responsibility of ownership by minimizing safety and health hazards resulting from, but not limited to, derelict structures, derelict vehicles and noncommercial junkyards. Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Noxious weeds within the TWP PA -1 construction limits will be controlled using the IPM methods as described by the CDOA. Additional information on noxious weed management is included in Appendix B. RUA. Goal 2. The County, property owners, municipalities and other jurisdictions should coordinate urban land use planning within the Regional Urbanization Areas, concerning but not limited to development policies and standards, zoning, street and highway construction, open space and trails, public infrastructure and other matters associated with urban development. Approximately 1,000 feet of the water pipeline is located within the Dry Creek Regional Urbanization Area (RUA). Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. The TWP PA -1 route crossing of the Dry Creek RUA is located outside ROW and outside future planned ROW. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 RUA.Goal 3. Development within Regional Urbanization Areas should occur in a manner that results in an attractive and functional working and living environment. Thornton will construct operate, and maintain the TWP PA -1 in a manner consistent with existing and planned land uses in Weld County. The water pipeline and appurtenances will be buried with minimal above ground equipment. There will be minimal effects to the rural character of Weld County. RUA.Policy 3.1. Consider the compatibility with surrounding land uses and natural site features. The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be compatible with adjacent land uses because they will be buried at a depth sufficient to prevent interference with anticipated land uses. The TWP PA -1 route is located in and adjacent to agricultural land use areas. Agricultural use within the permanent easement can continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The TWP PA -1 is not anticipated to impact standard agricultural practices once the water pipeline is installed. Thornton will coordinate placement of the water pipeline and appurtenances, including bury depth, with individual property owners to minimize impacts to property operations. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. RUA.Policy 3.6. Development should conserve and/or enhance natural resources and features. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. RUA.Goal 7. Promote a quality environment within the Regional Urbanization Area that is free of unsightly materials, including but not limited to derelict vehicles, refuse and litter. RUA.Policy 7.2. Property owners should demonstrate responsibility of ownership by minimizing safety and health hazards resulting from, but not limited to, derelict structures, derelict vehicles and noncommercial junkyards. Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Noxious weeds within the TWP PA -1 construction limits will be controlled using the IPM methods as described by the CDOA. Additional information on noxious weed management is included in Appendix B. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 P.Goal 1. Promote efficient and cost-effective delivery of public facilities and services P.Policy 1.1. Encourage consolidation of public facilities or services and coordination between providers, to avoid duplication of costs and promote efficiency. Thornton will coordinate design efforts with Weld County improvement projects to minimize conflicts with future plans. If Weld County's improvement projects occur within the timeframe of the construction of the TWP PA -1, Thornton will work with Weld County and other involved parties to coordinate construction and minimize disruption, avoid duplication of costs, and promote efficiency. WA.Goal 1. Support the development of water that is put to beneficial use, along with associated infrastructure. WA.Policy 1.1. Acknowledge a water right as real property that is held by the individual or entity that has developed or maintained the water decree. The TWP PA -1 will not impact water rights. The TWP is a water delivery system that will convey domestic water from the WSSC system, purchased by Thornton in the mid -1980's, from unincorporated Larimer County to Thornton. Water from the WSSC system purchased by Thornton from willing sellers has been decreed in Water Court for use in Thornton. WA. Goal 2. Strive to maintain and protect water supply storage facilities, conveyances and infrastructure adequate to sustain continued water use. Impacts to existing facilities will be managed and mitigated. The TWP PA -1 route was located to minimize impacts to water supply storage facilities. The TWP PA -1 will cross water supply conveyances and infrastructure, such as pipelines conveying raw and domestic water service and irrigation ditches. As part of the stakeholder outreach effort, Thornton has met with local major water providers and sent letters to water providers to begin coordination activities regarding possible conflicts with existing and proposed future utilities. The water pipeline and appurtenances will be designed and constructed in accordance with accepted standards of practice. The design will incorporate criteria for crossing existing utilities, such as minimum clearance requirements between pipelines. Subsurface utility engineering will be completed during the design and construction phases of the TWP PA -1 and will include surface geophysical methods and test holes to determine the locations of existing utilities. The depth of bury will vary based on existing utility crossings, road crossings, water crossings, other existing or proposed features, and property owner preferences. See Appendix D for additional information on stakeholder outreach. During construction of the water pipeline short-term disruptions could occur to domestic water service if a utility requires relocation. Area residents will be notified in advance of any service disruptions. The TWP PA -1 will cross multiple irrigation ditches within unincorporated Weld County. Thornton has begun outreach to each irrigation ditch company to begin coordination activities. Thornton will obtain appropriate agreements for each crossing prior to construction. Crossings will be constructed using either open -cut or trenchless construction methods as directed by the irrigation ditch company and during off season, if required. TWP USR PA -1 SECTION C SUMMARY STATEMENT -'.�) THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 WA.Goal 4. Strive to address the quality of all water bodies as outlined in the State and Federal Water Quality Standards. Development of the TWP PA -1 route considered pipeline construction locations that minimize impacts to historical surface and subsurface water flows in the project area. Pipeline crossings of jurisdictional waters, including wetlands, will be constructed utilizing trenchless construction methods. This construction method will eliminate surface disturbance to the waterbody and effects on water quality. The TWP PA -1 will cross multiple open waters, riparian areas, and wetlands, additional information can be found the Natural and Cultural Resources Assessment in Appendix B. Prior to construction, Thornton and/or the TWP contractors will obtain the required Weld County grading permit and Stormwater Discharge Associated with Construction Activity — General Permit from CDPHE. SWMPs will be developed under the general permit to protect the quality of stormwater runoff during construction in accordance with the Construction Stormwater Discharge Permit requirements. Construction wastewater associated with the potential dewatering of trenches would be handled in accordance with CDPHE permit discharge requirements. Prior to construction, Thornton and/or the TWP contractors will obtain a General Permit for Construction Dewatering Activities from CDPHE and specify the management measures to be used to capture and manage any generated discharge. Construction, operation, and maintenance activities will comply with applicable federal, state, and local laws and regulation regarding the use of hazardous substances as described in Section C.2.f. WA.Policy 4.2. Applications for new development should include provisions for adequately handling drainage and for controlling surface erosion or sedimentation within the site itself. Surface drainage stormwater BMPs will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and CDPHE construction stormwater permits and SWMPs will include detailed descriptions of BMPs that will be used to protect surface hydrology and water quality. WA. Goal 6. Development should occur in areas where adequate water quantity and quality is currently available or reasonably obtainable. No water utility services will be required after construction. During construction, water may be purchased from local water providers for construction activities such as watering the construction site to minimize fugitive dust or hydrotesting the pipeline. Contractors will provide bottled water, water cooler service, or other temporary source of drinking water during construction. AIR.Goal 1. Maintain National Air Quality Standards and, where practicable, improve air quality in the County. AR.Policy 1.1. If applicable, land use applications should demonstrate future impacts on current air quality. The amount of surface clearing required for construction will exceed 25 acres; therefore, Thornton and/or the TWP PA -1 contractors will develop a fugitive dust control plan, submit an air pollution emissions notice, and obtain a permit from CDPHE before construction activities in accordance with state air quality regulations. The TWP PA -1 may be constructed under multiple packages; therefore, multiple permits may be obtained as required. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Construction activities, such as vehicles driven over cleared ground, general disturbance to vegetated areas, or soil stockpiles susceptible to winds, can cause fugitive dust. During construction, dust control measures will be implemented. Examples of these mitigation measures that may be used on the TWP PA -1 include: • Speed limits for construction vehicles within the work area • Water application to disturbed areas, dirt access roads, and stockpiles • Erosion control techniques and best management practices listed in Attachment C.2.c-3. • Revegetation of disturbed areas where appropriate following construction activities Water will be used as needed for dust suppression during construction. Water sources could be nearby fire hydrants, water pipelines, and water trucks. Water may be purchased from local water providers for construction activities. Once operational, the water pipeline will not impact air quality. N.Goal 1. Minimize the impact of noise on County residents. During construction of the TWP PA -1, the TWP PA -1 will comply with Weld County's then -existing maximum permissible noise levels (currently WCC Section 14-9-40). Noise from construction equipment will be of short duration during construction. Noise levels from equipment will be controlled through the use of standard maintenance procedures and the use of appropriate mufflers. Construction hours will typically be from 7:00 a.m. to 7:00 p.m., Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities may be required to complete uninterruptible tasks, meet an in-service date, or minimize short-term impacts to traffic. No noises related to the water pipeline operation are anticipated. TPD. Goal 1. The County expects businesses, residents and landowners to prevent negative impacts on human health and the environment from waste processing or disposal. TPD.Policy 1.1. Land use applications should be required to characterize the waste stream associated with the proposed land use. Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every 1 to 2 weeks. After construction the TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Construction, operation, and maintenance activities will follow best management practices for the management of wastes to avoid and minimize impacts from potential spills or other releases to the environment. These practices are discussed in greater detail in Section C.2.f. Adverse impacts from the release of construction or operations wastes are not expected. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 H.Goal 1. Encourage the minimization and careful collection of hazardous waste. Require the proper disposal of hazardous components, products and waste. Construction, operation, and maintenance activities involving Thornton or the TWP PA -1 contractors bringing any hazardous materials onto the site will comply with applicable federal, state, and local laws and regulations regarding the handling, storage, disposal, transportation, and use of hazardous substances. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws. Additional information is included in Section C.2.f. H.Policy 1.1. All producers of regulated hazardous waste and users of regulated hazardous materials within the County should comply with federal, state and County statutes, regulations and ordinances regarding use, reporting, storage and disposal of regulated hazardous waste or products. Construction, operation, and maintenance activities involving Thornton or the TWP PA -1 contractors bringing any hazardous materials onto the site will comply with applicable federal, state, and local laws and regulations regarding the handling, storage, disposal, transportation, and use of hazardous substances. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws. Additional information is included in Section C.2.f. NW. Goal 1. Support efforts to eradicate noxious weeds throughout the County in compliance with state and federal laws. NW.Policy 1.2. Attempt to control noxious weeds on County property and in County maintained rights -of -way. Noxious weeds within the TWP PA -1 construction limits, including within Weld County ROW, will be controlled using the following IPM methods as described by the CDOA. The following methods have been developed to control noxious weeds in a manner that prevents harm to human health and to environmentally sensitive areas such as waterways and desirable vegetation including native trees. • Major equipment (e.g. truck equipment and backhoes) will be cleaned by high pressure air or water spray before being delivered to the project area to avoid introducing undesirable plants and noxious weeds. • If practicable, topsoil should not be salvaged in any area densely infested with noxious weeds. • For areas where removal is not practicable or only a small area of noxious weeds is present, pre- treat all noxious weed populations in the topsoil. • Fertilizer or other soil amendments will not be used unless recommended by a revegetation specialist based on site -specific conditions. The use of fertilizers will be restricted because they can promote noxious weeds and can be detrimental to native species in the revegetation mix. • After construction is complete, all disturbed areas will be properly revegetated as quickly as possible. Prompt revegetation with appropriate species is essential for preventing the spread of noxious weeds. • Certified weed -free seed and mulch will be used for revegetation. Weed -free straw bales will be used for sediment barriers. • If stands of noxious weeds become established, weed control would be implemented following an integrated approach specific to the weed species present. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 • Because new control methods are continually being developed, particularly for herbicide applications, any control methods used will follow the CDOA and Weld County recommendations at the time of implementation. W. Goal 1. New development should be located and designed to conserve critical ecosystem components, including wetlands, significant wildlife habitats and migration corridors. Significant wildlife habitat is defined as a geographical area containing existing or migrating wildlife and a combination of the essential elements of food, water, cover and space in quantities sufficient to support appropriate wildlife. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. The TWP PA -1 was assessed for potential jurisdictional waters and wildlife habitat using publicly available mapping and aerial photographs, and by conducting a windshield survey of areas that could be publicly accessed. Information on terrestrial and aquatic animals was obtained from various sources including Colorado Parks and Wildlife, Colorado Natural Diversity Information System, Colorado Natural Heritage Program, U.S. Fish and Wildlife Service, published literature, and field surveys. Site surveys will be performed to aid in the determination of jurisdictional waters and wildlife habitat. Information from the assessment and survey information will be used to develop final design. Mitigation methods to minimize impacts to these areas will be incorporated into the design and construction as appropriate. Jurisdictional water crossings will be constructed using trenchless construction methods. An assessment was conducted for potential habitat of federally threatened, endangered, and candidate species protected under the Endangered Species Act. The TWP PA -1 will have no effect on federally listed threatened, endangered, or candidate wildlife or plant species. Mitigation measures such as restricting construction during nesting seasons may be implemented as appropriate. Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. Impacts to these areas will be temporary and only occur while the water pipeline construction is taking place. After construction is completed, the area will be restored to pre -construction grades and vegetation. Additional information including mitigation measures to minimize impacts to wildlife can be found in the Natural and Cultural Resources Assessment in Appendix B. W.Policy 1.1. Development and design of land uses which require drainage, excessive removal of riparian vegetation and alterations of river or stream banks should be discouraged in order to protect river or stream quality and to protect key wildlife habitat. The water pipeline will not require drainage and no alterations of river or stream banks will occur. Site surveys will be performed to aid in the determination of jurisdictional waters and wildlife habitat associated with those areas. Information from the assessment and survey information will be used to develop final design. Mitigation methods to minimize impacts to these areas will be incorporated into the design and construction as appropriate. Jurisdictional water crossings will be constructed using trenchless construction methods. Open waters and wetlands determined to be non -jurisdictional and any riparian areas would be temporarily impacted by open cut trenching activities. During construction, the trench would be as narrow as safely practicable when crossing non -jurisdictional waters and wetlands or any riparian TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation. Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. W.Policy 1.2. Conflicts with fish and wildlife habitats and migration routes should be considered in land development. Developments adjacent to rivers and streams, waterfowl areas and important or critical wildlife areas should incorporate reduced densities, adequate setbacks and buffered areas. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. The TWP PA -1 was assessed for potential jurisdictional waters and wildlife habitat using publicly available mapping and aerial photographs, and by conducting a windshield survey of areas that could be publicly accessed. Information on terrestrial and aquatic animals was obtained from various sources including Colorado Parks and Wildlife, Colorado Natural Diversity Information System, Colorado Natural Heritage Program, U.S. Fish and Wildlife Service, published literature, and field surveys. Site surveys will be performed to aid in the determination of jurisdictional waters and wildlife habitat. Information from the assessment and survey information will be used to develop final design. Mitigation methods to minimize impacts to these areas will be incorporated into the design and construction as appropriate. Jurisdictional water crossings will be constructed using trenchless construction methods. An assessment of the TWP PA -1 was conducted for wildlife habitat and migration corridors. A description of the ways that wildlife use the area within and near the TWP PA -1 and the species involved with proposed setbacks and other potential mitigation measures can be found in the Natural and Cultural Resources Assessment in Appendix B. The TWP PA -1 could temporarily impede movement of wildlife and result in the displacement of some individuals during construction activities. During construction, wildlife crossovers (trench plugs) with ramps on each side of the trench could be installed at well-defined game trails. The water pipeline would not provide a barrier to wildlife movement over the long term because the water pipeline would be buried. W.Policy 1.3. Identify and attempt to protect critical or unique habitat areas of high public value, such as habitats of endangered or unique species, significant viewing areas and breeding and spawning areas. An assessment was conducted for potential habitat of federally threatened, endangered, and candidate species protected under the Endangered Species Act. The TWP PA -1 will have no effect on federally listed threatened, endangered, or candidate wildlife or plant species. Mitigation measures such as restricting construction during nesting seasons may be implemented as appropriate. Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. Impacts to these areas will be temporary and only occur while the water pipeline construction is taking place. After construction is completed, the area will be restored to pre -construction grades and vegetation. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 W.Goal 2. Traditional wildlife uses, such as hunting, trapping, and fishing in agricultural and non -developed portions of the County, are beneficial. Support the maintenance of these wildlife uses. The water pipeline is located in and adjacent to agricultural land use areas and non -developed portions of Weld County. The water pipeline and fiber optic cable will be compatible with existing agricultural uses and agricultural use within the permanent easement can continue after construction so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The TWP PA -1 is not anticipated to impact wildlife uses, such as hunting, trapping, and fishing practices once the water pipeline and fiber optic cable are installed. W.Policy 2.1. The effect of proposed development upon wildlife and habitat should be evaluated. Loss of critical habitat should be mitigated. The County will maintain maps of known critical wildlife habitats. An assessment of the TWP -PA-1 was conducted for wildlife and wildlife habitat. Information on terrestrial and aquatic animals was obtained from various sources including Colorado Parks and Wildlife, Colorado Natural Diversity Information System, Colorado Natural Heritage Program, U.S. Fish and Wildlife Service, published literature, and field surveys. Wildlife, including habitat and special status species, and associated mitigation measures that could be implemented to minimize impacts to wildlife are discussed in the Natural and Cultural Resources Assessment in Appendix B. An assessment was conducted for potential habitat of federally threatened, endangered, and candidate species protected under the Endangered Species Act. The TWP PA -1 will have no effect on federally listed threatened, endangered, or candidate wildlife or plant species. Mitigation measures such as restricting construction during nesting seasons may be implemented as appropriate. Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. Impacts to these areas will be temporary and only occur while the water pipeline construction is taking place. After construction is completed, the area will be restored to pre -construction grades and vegetation. W.Policy 2.2. The integrity of movement in wildlife corridors should be conserved. An assessment of the TWP PA -1 was conducted for wildlife habitat and migration corridors. A description of the ways that wildlife use the area within and near the TWP PA -1 and the species involved with proposed setbacks and other potential mitigation measures can be found in the Natural and Cultural Resources Assessment in Appendix B. The TWP PA -1 could temporarily impede movement of wildlife and result in the displacement of some individuals during construction activities. During construction, wildlife crossovers (trench plugs) with ramps on each side of the trench could be installed at well-defined game trails. The water pipeline would not provide a barrier to wildlife movement over the long term because the water pipeline would be buried. W.Policy 2.3. Destruction of wetlands or riparian areas will be strongly discouraged, and mitigation for loss of wetlands and riparian habitat will be encouraged. Site surveys will be performed to aid in the determination of jurisdictional waters and wildlife habitat associated with those areas. Information from the assessment and survey information will be used to develop final design. Mitigation methods to minimize impacts to these areas will be TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 incorporated into the design and construction as appropriate. Jurisdictional water crossings will be constructed using trench less construction methods. Open waters and wetlands determined to be non -jurisdictional and any riparian areas would be temporarily impacted by open cut trenching activities. During construction, the trench would be as narrow as safely practicable when crossing non -jurisdictional waters and wetlands or any riparian areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation. Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. W.Goal 3. Coordinate with local, state and federal agencies to identify, conserve, protect or enhance critical fish and wildlife habitat by attempting to implement measures for the protection or enhancement of such areas. Thornton has attended initial coordination meetings with CPW and will continue coordination with CPW as the TWP PA -1 is developed and implemented. CPW has published recommended buffer zones and seasonal restrictions for raptors in Colorado to minimize the effects of disturbance. Thornton will review the CPW raptor nest data and perform nest surveys for raptors before the nesting season to identify potential active raptor nests before construction. Thornton will coordinate with CPW regarding any potential conflicts between scheduled construction and potential raptor nests and develop measures acceptable to CPW to minimize impacts on nesting raptors. Thornton has sent letters to CPW and USFWS to initiate coordination activities. See Appendix D for additional information on stakeholder outreach. O.Goal 4. Encourage the preservation, enhancement and/or maintenance of significant natural land features during the land use process. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. O.Policy 4.3. Encourage compatible, drought -tolerant landscaping in land use proposals and ensure the integration of new landscaping with the existing natural landscape. The majority of the impacts on vegetation will be temporary during construction of the water pipeline and long-term impacts to native vegetation communities are not expected. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. Restored vegetation will be comparable to existing vegetation. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner preferences or regulatory requirements will be specified in the SWMP for the revegetation of disturbed areas. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. TWP USR PA -1 SECTION C SUMMARY STATEMENT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 NR.Goal 3. Recognize Weld County soils as a natural resource that is important to support the Weld County economy. Surface drainage BMPs implemented during construction will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and CDPHE construction stormwater permits will be obtained before construction, and the associated SWMPs will include detailed descriptions of BMPs that will be used to control erosion. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. See Attachment C.2.c-3, Drainage and Erosion Control Information for additional information on BMPs. Topsoil will be stripped and stored separately from excavated trench materials. NR.Policy 3.1. Support efforts to limit the loss of soil through wind and water erosion. Surface drainage BMPs implemented during construction will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and CDPHE construction stormwater permits will be obtained before construction, and the associated SWMPs will include detailed descriptions of BMPs that will be used to control erosion. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. See Attachment C.2.c-3, Drainage and Erosion Control Information for additional information on BMPs. NR.Policy 3.2. Recognize and consult soil classifications during the land use review process. An understanding of the general soil conditions assists in the design and construction of the site, although only hazard conditions should be considered an actual constraint to development. Figure C.2.i.3 shows soil types per the NRCS, Soil Survey Geographic database, 2017. The TWP PA -1 will be buried and is not expected to affect geologic conditions in the area. A subsurface geotechnical investigation of geologic conditions utilizing soil and rock borings will be completed during design to further determine the subsurface soil conditions and associated geological hazards along the TWP PA -1 route. Mitigation measures will be further refined during design to meet site - specific geological hazards and BMPs will be implemented under the SWMP to minimize or mitigate soil erosion. Colorado Geological Survey publishes information about geologic hazards such as abandoned mine lands, avalanches, collapsible soils, corrosive soils, debris flows/mudslides, earthquakes, subsidence, heaving bedrock, landslides, rockfall, and swelling soils. Available maps were reviewed for indications of known geologic hazards along the water pipeline route. In addition, Weld County's GIS Digital Database, which includes identified geological hazards, was evaluated during the review. Based on this review, the majority of the TWP PA -1 route has no identified geological hazards. However, at the southwest portion of Weld County, the water pipeline crosses through a historical coal mining region (the Boulder -Weld Coal Field) with faulting and abandoned coal mines identified as geological hazards in the area. Based upon mapping conducted by the Colorado Geological Survey (Morgan, 2013), the mapped faults identified in Weld County's GIS Data are not identified as quaternary faults (i.e. faults which have been active in the past 1.8 million years) and as such are generally not considered "active". Due to the inactivity of the faults and the lack of recorded earthquakes in the area, the risk of shallow earthquakes and ground movements is considered low. Construction risks therefore are TWP USR PA -1 SECTION C SUMMARY STATEMENT L Thornton Water Project ADAMS AVE ZINNIA AV£ ;R 5.8 U ¶19. GMONT) rtl'fl Soils Crossed by TWP PA -1 Altyan loam. 0 to 1 percent slopes Aquolls and Aquents. gravelly substratum Aquolls and Aquepts. flooded Bankard sandy loam. 0 to 3 percent slopes. frequently flooded Heldt silty day. 1 to 3 percent slopes MI Kim loam. 5 to 9 percent slopes Loup-Boel loamy sands. 0 to 3 percent slopes Nunn clay loam. 0 to 1 percent slopes Nunn day loam. 1 to 3 percent slopes Nunn loam. 0 to 1 percent slopes Nunn loam. 1 to 3 percent slopes Olney fine sandy loam 1 to 3 percent slopes Olney fine sandy loam. 3 to 5 percent slopes Olney loamy sand. 1 to 3 percent slopes Renonill clay loam. 3 to 9 percent slopes Tassel fine sandy Cain. 5 to 20 percent slopes am Ulm day loam 3 to 5 percent scopes Valent sand. 3 to 9 percent slopes Vona loamy sand. 0 to 3 percent slopes 1 Vona loamy sand. 3 to 5 percent slopes Vona sandy loam / to 3 percent slopes Vona sandy loam 3 to 5 percent slopes 1 Water Weld loam. 0 to 1 percent slopes Weld loam. 1 to 3 percent slopes Wiley -Colby complex. 1 to 3 percent slopes Wiley•Colby complex. 3 to 5 percent slopes (3/4(4- Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON. CO 80241-2405 Figure C.2.i.3 Soils 8TH ST S 0 FIREST :t PINE CONE A 0.6 1 ••�••a••S••�•• T A N W r ^2 tntz o a _ a. _ 2 miles —• County Boundary Ratroad t N CR 24.5 FO TLUPT Q CR 16 . t4T11H ST t W 2 s CR8 C.Rai CR25 lBASRINE RD •• ••as•••••�•• L__ •••=•• 4.7 J J tn a.. a USN S r BRIDGE ST l j BRIGHTON, TWP PA -1 Route in — Rver/StreanvCanal/Dttch Unincorporated Weld County n Lake/Rese-cr a and Current or Future Road Right -of -Way TWP PA -1 Route in a Unincorporated Weld County TWP PA -1 Route outside r '6' Unincorporated Weld County G vit .T*0 1220/20/8 1 Inch = 1 2 miles ton sc*v-r . Mb/EC7.t ItSt.oa9ia S'8 •PE RWrtAGKLSMW'Kr.ESV•EtS..61RF 504.14ff,IMPSWGGOT.ofmlt S WD A$&OST •N•t.D'• •• )• D `V So-ncw +,-O cwt An Cater COOT THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 limited to poor rock conditions (i.e. fault breccia and gouge), spatially rapid changes in ground conditions across fault zones, and the potential for perched water conditions. A map of inactive coal mine and subsidence information in Weld County (Turney and Murray - Williams, 1983) was reviewed for records of undermined areas and mine shafts along the water pipeline alignment. The map does not indicate undermined areas along the TWP PA -1 water pipeline. Based on previous studies of the area, the risk of subsidence in areas above mapped shallow mine workings are appreciable to severe. Additional information and mitigation measures are presented in Attachment C.2.c-3, Drainage and Erosion Control Information and Attachment C.2.c-4, Geologic Hazards Information. NR. Goal 4 Support the health, preservation and uses of the grassland areas of the County. NR.Policy 4.1. Support the responsible use of dryland grass areas of the County for ranching, farming, mineral extraction and other beneficial uses. The easements needed for the water pipeline will grant Thornton an area to construct, operate, and maintain the water pipeline, and property owners will maintain fee title to the land. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, ranching or other beneficial uses, so long as such uses do not interfere with or endanger the operation of the TWP PA -1. The majority of the impacts on vegetation will be temporary during construction of the water pipeline and long-term impacts to native vegetation communities are not expected. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. Restored vegetation will be comparable to existing vegetation. Certified weed -free seed mix consisting of drought -tolerant native grasses and other types of vegetation as appropriate to meet property owner preferences or regulatory requirements will be specified in the SWMP for the revegetation of disturbed. Disturbed mature vegetation will be replaced, per a property owner's reasonable request, with a like species. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. NR. Goal 6. Support efforts to record and preserve archeological, cultural and historic resources. A Class I File Search and Literature Review for cultural resources was conducted. Based on that review, there are no cultural sites or structures that are listed on the State and National Register of Historic places within the TWP PA -1 within unincorporated Weld County. Additional information on natural and cultural resources within the TWP PA -1 is presented in Appendix B, Natural and Cultural Resource Assessment. Information provided there includes mitigation measures that could be implemented for the TWP PA -1. ECON.Goal 1. Encourage the expansion of existing businesses and the location of new industries that will provide employment opportunities in the County. The TWP PA -1 contractors will provide construction crews that are not anticipated to exceed approximately 100 workers at any one time. Some workers may reside outside of the local areas and will require lodging or temporary housing. The number of construction workers on site will depend on the contractors and the construction activity occurring during a particular time. Thornton will endorse hiring local workers. TWP USR PA -1 SECTION C SUMMARY STATEMENT C `,o1 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TWP contractors and construction workers will likely support local businesses to meet a need for durable and nondurable goods and services. ECON.Policy 1.3. Promote the preservation and enhancement of the major assets in the County - lower costs of doing business, safe communities, a qualified and available workforce and access to agricultural and natural resources - to retain current employers and attract new ones. Maintain and improve basic County services and infrastructure, in order to ensure that the County is a viable candidate for attracting businesses, labor and capital. The TWP PA -1 is a low impact, passive use that complements the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The predominant land use in the TWP PA -1 area, agricultural use, is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. C.2.j. A Decommissioning Plan. This section addresses WCC Section 23-2-510 C.2.j. Currently, there is no intent to decommission the water pipeline. The water pipeline will be maintained, monitored, and repaired/replaced as needed. C.2.k. A traffic narrative describing construction traffic and permanent or temporary access points. This section addresses WCC Section 23-2-510 C.2.k and the USR Questionnaire, Engineering 1, 2, 4, and 5. Traffic information is provided in Attachment C.2.c-7, Traffic Narrative. The following elements are discussed in Attachment C.2.c-7: • General Transportation Information • Weld County 2035 Transportation Plan • Other Considerations o Trip Generation o Project Access o Possible Haul, Delivery, and Commuting Routes o Material Storage o Parking and Vehicle Storage Construction in ROW o Permits • Mitigation Measures iWP USR PA -1 SECTION C SUMMARY STATEMENT C-60 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APP( (CATION 1 C.2.l. A description of any haul routes to be used during construction, identifying roads and bridges involved and the weight of the loads. This section addresses WCC Section 23-2-510 C.2.I and the USR Questionnaire, Engineering 1 and 2. It is anticipated that access to the final water pipeline alignment will be required along Interstate 25, Interstate 25 frontage roads, State Highways, County Roads and other local roads. A more detailed description of the possible haul routes and impacts to roads and the traveling public can be found in the Attachment C.2.c-7, Traffic Narrative. Construction equipment will be transported utilizing semi -tractor and flatbed trailers, or comparable equipment, with gross vehicle weights estimated between 40,000 - 80,000 lbs. Construction personnel are anticipated to utilize 1 -ton pickup trucks and comparable sized vehicles. The expected haul routes include both CDOT highways and Weld County roads. Upon review of the Weld County Restricted Bridge Locations Map, dated August 2012, it was determined that the project area does not incorporate any restricted bridges. Truck haul routes for material deliveries from off -site locations will be chosen to facilitate safe and expedient delivery while minimizing traffic impacts. It is expected that the daily commuting route for construction workers would also follow the same roads as the truck haul routes to the construction site or temporary staging areas for parking. The major roads and highways within unincorporated Weld County that could be utilized for delivery of construction materials and construction worker trips as part of construction operations are presented in Table C.2.I. Anticipated delivery and commuting routes are shown in Figure C.2.I. It is not expected that any road improvements or closures would be required to facilitate the transport of materials. In the event that a closure is necessary, the duration of the closure will be minimized, and Weld County standards and procedures will be followed. TABLE C.2.I Possible Delivery and Commuting Routes County or Major Roads State Highways Federal Highways County Road 2 (168th Ave), County Road 8, State Highway 52, State Highway Interstate 25, Interstate 25 County Road 9, County Road 10, County 66 Northeast Frontage Road Road 17, County Road 18, County Road 19, County Road 20, County Road 24, County Road 26, County Road 28 Trip generation will vary according to the phase and location of construction. On average, five trips per day to the site are expected for each type of construction vehicle: pickup trucks, welding trucks, pipe/material hauling trucks, water trucks, and equipment transport trucks for each construction package. TWP USR PA -1 SECTION C SUMMARY STATEMENT Thornton Water Project ZINNIA AVE r. r f. n 5.6 L • NGMON 1 ERIE CR 28-- aR 2`50 FIRESTONE1HDR 5'ABLE AVE CR 250 LATTEVILLE FIRESTONE SO CR 24 SAGE AVE Z MAPLE DEL CR 20 5 O , CR 20 PINE CONE AVE CR 20 6 TIPPLE PKWY1 w 2 U O < CR145 FREDERICK CR 8.75 CR6 ..r ERIE‘ AV''IN$ ?al A'.S tin BROOMFIELD 0 160TH AVE 7 -THORNTON NORTHGLENN CR 16 1ST S7 8TH ST DACONO CR4 (4. Thornton 12450 WASHINGTON ST THORNTON. CO 80241-2405 0 0.6 1.2 Miles —•• County Boundary 12/2O/2O18 1 inch = 1.2 miles — Rtver/SVeamlCanel/Oltch r I CR a I I Lake/Reservodr ♦► Possjble Haul Route h W r CITY OF THORNTON COLORADO TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Rtgnt-of-Way TWP PA -1 Route in Unincorporated Weld County TWPPA-1 Route outside Unincorporated Weld County N CR 4.5 m a U, N s U CR 2 .5 CR22 CR 185 T LUPTON CR 16 4Th ST ST CR '2 CR8 :R 4 CR 2.5 ELINE RD BRIGHTON sa ST BRIDGE ST Figure C.2.I Possible Haul Routes So,ww..moo =MkSec Cate CJO• 41MM r..ca*.r0 War..t a% at C11 r►pt otljE iE0.Virr V.(potetWAiri, titbit t 7.,.skJ1E 40cACE VM9ut CIKINIw04.t ti Y1.1 ?Jul 3.s>)WIi n19P09t 'N2&?O'A 7i►A AV THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 C.2.m. Soils reports required for pipeline crossings or any pipeline encroaching in public right- of-way, if required by the Department of Public Works. Thornton has met multiple times with staff from the Weld County Planning and Public Works Departments regarding the TWP PA -1, the USR permit application process and permit requirements. The Pre -Application meetings held on May 27, 2016 and August 25, 2016 along with follow-up meetings provided Thornton with guidance and recommendations from Weld County staff to help ensure a complete permit application submittal. Thornton has continued to consult with the Weld County Planning and Public Works Departments throughout the development of this Application, including periodic telephone and e-mail communications. Public Works staff has not indicated that a soils report would be required. Figure C.2.i.3 shows soil types per the NRCS, Soil Survey Geographic database, 2017. The TWP PA -1 will be buried and is not expected to affect geologic conditions in the area. A subsurface geotechnical investigation of geologic conditions utilizing soil and rock borings will be completed during design to further determine the subsurface soil conditions and associated geological hazards along the TWP PA -1 route. Mitigation measures will be further refined during design to meet site - specific geological hazards and BMPs will be implemented under the SWMP to minimize or mitigate soil erosion. Colorado Geological Survey publishes information about geologic hazards such as abandoned mine lands, avalanches, collapsible soils, corrosive soils, debris flows/mudslides, earthquakes, subsidence, heaving bedrock, landslides, rockfall, and swelling soils. Available maps were reviewed for indications of known geologic hazards along the water pipeline route. In addition, Weld County's GIS Digital Database, which includes identified geological hazards, was evaluated during the review. Based on this review, the majority of the TWP PA -1 route has no identified geological hazards. However, at the southwest portion of Weld County, the water pipeline crosses through a historical coal mining region (the Boulder -Weld Coal Field) with faulting and abandoned coal mines identified as geological hazards in the area. Based upon mapping conducted by the Colorado Geological Survey (Morgan, 2013), the mapped faults identified in Weld County's GIS Data are not identified as quaternary faults (i.e. faults which have been active in the past 1.8 million years) and as such are generally not considered "active". Due to the inactivity of the faults and the lack of recorded earthquakes in the area, the risk of shallow earthquakes and ground movements is considered low. Construction risks therefore are limited to poor rock conditions (i.e. fault breccia and gouge), spatially rapid changes in ground conditions across fault zones, and the potential for perched water conditions. A map of inactive coal mine and subsidence information in Weld County (Turney and Murray - Williams, 1983) was reviewed for records of undermined areas and mine shafts along the water pipeline alignment. The map does not indicate undermined areas along the TWP PA -1 water pipeline. Based on previous studies of the area, the risk of subsidence in areas above mapped shallow mine workings are appreciable to severe. Additional information and mitigation measures are presented in Attachment C.2.c-3, Drainage and Erosion Control Information and Attachment C.2.c-4, Geologic Hazards Information. TWP USR PA -1 SECTION C SUMMARY STATEMENT Attachment C.2.c-1 Floodplain Information This attachment addresses WCC Section 23-2-510 C.2.c and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. The TWP PA -1 crosses several designated 100 -year floodplains as described herein and as shown on Figure C.2.c-1, 100 -Year Floodplains. The TWP PA -1 will not alter floodplains. The water pipeline will utilize trenchless construction methods under waterbody crossings such as Waters of the United States (WOTUS) (jurisdictional waters), including streams, rivers, lakes, and wetland areas. Work conducted within the floodplain fringe areas will be restored to pre -construction conditions. Therefore, the TWP PA -1 will mitigate impacts on the hydraulic and hydrology of the floodplain. Because impacts will be mitigated, no modeling has been conducted for this attachment. Thornton will obtain Floodplain Development permits and other approvals as required for floodplain crossings from Weld County after design has progressed. Information will be provided to Weld County as required to obtain permits. The TWP PA -1 crosses three designated 100 -year floodplains in southern Weld County. Floodplain crossings information listed in this attachment were obtained from Weld County GIS data collected on May 31, 2018 from the online Weld County Downloadable Data repository. Floodplain crossings are shown on Figure C.2.c-1, 100 -Year Floodplains and identified below: • Big Dry Creek near CR 17 • Little Dry Creek near CR 17 • St Vrain Creek near Highway 66 Floodplain crossings will utilize open -cut construction in the fringe area of the floodplain and trenchless construction methods under the ordinary high water mark and associated wetlands so that there will be no impact to jurisdictional waters. Spoils from trench excavations, construction - related equipment, materials, and supplies will be stored outside of the 100 -year floodplain per local floodplain regulations. Fringe areas using open -cut construction will be restored to pre - construction grades and vegetation after construction. Trenchless construction methods could include methods such as tunneling or auger boring techniques. Where trenchless construction methods are used, shafts will be located on either side of the water resource for launching and receiving the water pipeline and the fiber optic cable and will be located outside of the normal high water mark and associated wetlands. Shafts will be backfilled and compacted, and affected areas will be restored to pre -construction conditions. A geotechnical investigation of geologic conditions near crossing locations will be completed during design. Currently, no areas have been identified that may pose a risk to trenchless construction methods; however, should any such locations be identified throughout the geotechnical investigation, Thornton will consult with applicable parties as required, including the affected property owners, Weld County, and other agencies to develop an alternative approach that will minimize impacts. The general standards required per WCC Chapter 23 that are applicable to the TWP PA -1 will be met and include: • WCC Section 23-11-270 - A Floodplain Development Permit shall be required for all uses occurring within the FEMA mapped 100 -year floodplain to ensure conformance with the provisions of this ordinance and federal and state regulations. Thornton will obtain a Floodplain Development Permit for floodplain crossings as required. TWP USR PA -1 ATTACHMENT C.2.C-1 FLOODPLAIN INFORIVIA HON ERIE*WY Thornton Water Project ADAMS AVE MEAD htc- ZINNIA AVE tit 56�r,l oN MO T Ch 10 CR 8.75 DACONO cR,2 FIRESTONE 80 ELM ST PINE CONE AVE 1ST Si 8TH ST riga CR6 r„ cc: ERIE` L. Al1'INe • a BROOMFIELD 53) 160TH AVE 2 Z II � j (INORTHGLENN CR8 *1FOf�NTON .7) ) (4. Thornton CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON, CO 8024 1-24 05 12/2012018 0 v S 06 12 1 inch = 1 2 miles CR6 Miles S nI • CR4 •-.•-•• N W LATTEVIL •..�.. 168TH AVE W `t 4,7 TWP R0.-1 Route in Unincorporated Weld County and Current or Future Road Right -of -Way TWP PA -1 Route in Unincorporated Weld County TWPPA-1 Route outside Unincorporated Weld County County Boundary Railroad S — RiveriStrearnICanai/Clitch Q Lake/Reservar MI 100-yr Flood Fnnge 100-yr Floodway 4.5 N U U .9TH ST (TNST FOR TLUPTON_ .�•• CR8 CR2.5 EUNE RD BRIGHTO ,? I LONGS PEAK ST WALNUT ST BR.r.GE s- - ' B.:S^, ST Figure C.2.c-1 Floodplain Schema F EV& \N GOYOFI Wee Cart. CJOT GAMISS_ rwORarov-WRT.ERh4443.en! ASK O4OF4SS'PERMlT1P.G.O*AFAP/.;tSMF_J.bkAEIOJICE,WPtSrt11OMl1OOZPM6MNAESPOStIfl&O'! .1 ItAM ` 2 CI? Attachment C.2.c-2 Air Quality Information This attachment addresses WCC Section 23-2-510 C.2.c and USR Questionnaire, Environmental Health Question 8 and the criteria described in WCC Sections 23-2-480 A.4, 23-2-480 A.5, 23-2-490 D, and 23-2-490 E. Colorado requires that fugitive dust emissions be controlled during construction. The amount of surface clearing required for construction will exceed 25 acres; therefore, Thornton and/or the TWP PA -1 contractors will develop a fugitive dust control plan, submit an air pollution emissions notice, and obtain a permit from CDPHE before construction activities in accordance with state air quality regulations. The TWP PA -1 might be constructed under multiple packages, and if so, multiple permits will be obtained as required. Construction activities, such as vehicles driven over cleared ground, general disturbance to vegetated areas, or soil stockpiles susceptible to winds, can cause fugitive dust. During construction, dust control measures will be implemented. Examples of these mitigation measures that may be used on the TWP PA -1 include: • Speed limits for construction vehicles within the work area • Water application to disturbed areas, dirt access roads, and stockpiles • Erosion control techniques and best management practices listed in Attachment C.2.c-3. • Revegetation of disturbed areas following construction activities Water will be used as needed for dust suppression during construction. Water sources could be nearby fire hydrants, water pipelines, and water trucks. Water may be purchased from local water providers for construction activities. During conduction painting activities are anticipated to occur to appurtenance piping inside manholes and vaults to protect facilities from corrosion. TWP PA -1 contractors will be required to meet federal, state, and local requirements limiting emission of volatile organic compounds. The water pipeline and appurtenances will not have emission sources; therefore, will not require a Colorado Air Emissions Permit. TWP USR PA -1 ATTACHMENT C.2.C-2 AIR QUALITY INFORMATION C.2.C-2-1 Attachment C.2.c-3 Drainage and Erosion Control Information This attachment addresses WCC Section 23-2-510 C.2.c, USR Procedural Guide Checklist, and the USR Questionnaire, Engineering Question 6 and the criteria described in WCCSections 23-2-480 A.4, 23-2-480 A.5, 23-2-480 A.8, 23-2-490 D, 23-2-490 E, and 23-2-490 H. As discussed during the Pre -Application meetings with Weld County staff on May 25, 2016 and on August 25, 2016 and as indicated in Memorandum Pre -Application Meeting prior to submitting USR for water transmission lines (PRE16-0083; Case File, pre -application) provided by Weld County staff dated August 25, 2016, submission of a drainage report for a water pipeline project is not required. The water pipeline itself will meet Weld County's pipeline exception. Drainage and erosion control information is provided in Section 11. Information provided presents a description of existing conditions and proposed mitigation measures that could be used for stormwater drainage and erosion control. TWP USR PA -1 ATTACHMENT C.2.C-3 DRAINAGE AND EROSION CONTROL INFORMATION C.2.C-3-1 Attachment C.2.c-4 Geologic Hazards Information This attachment addresses WCC Section 23-2-510 C.2.c and 23-2-510 C.2.m and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. Colorado Geological Survey publishes information about geologic hazards such as abandoned mine lands, avalanches, collapsible soils, corrosive soils, debris flows/mudslides, earthquakes, subsidence, heaving bedrock, landslides, rockfall, and swelling soils. Available maps were reviewed for indications of known geologic hazards along the water pipeline route. In addition, Weld County's GIS Digital Database, which includes identified geological hazards, was evaluated during the review, with information shown in Figure C.2.c-4. Based on this review, the majority of the TWP PA -1 route has no identified geological hazards. However, at the southwest portion of Weld County, the water pipeline crosses through a historical coal mining region (the Boulder -Weld Coal Field) with faulting and abandoned coal mines identified as geological hazards in the area. Based upon mapping conducted by the Colorado Geological Survey (Colorado Earthquake Hazards Mitigation Council, 2013), the mapped faults identified in Weld County's GIS Data are not identified as quaternary faults (i.e. faults which have been active in the past 1.8 million years) and as such are generally not considered "active". Due to the inactivity of the faults and the lack of recorded earthquakes in the area, the risk of shallow earthquakes and ground movements is considered low. Construction risks therefore are limited to poor rock conditions (i.e. fault breccia and gouge), spatially rapid changes in ground conditions across fault zones, and the potential for perched water conditions. Mitigation measures in this area include: • Limiting the vertical alignment of the TWP PA -1 in this region to the surficial soils, where sufficient cover exists. • Open -cut construction methods. • Additional dewatering capacity in the case of rapid increases of water inflows. The TWP PA -1 route crosses the historical Boulder -Weld coal field with abandoned mine workings identified at a range of depths, with subsidence features having been reported in regions of relatively shallow mining. A map of inactive coal mine and subsidence information in Weld County (Turney and Murray -Williams, 1983) was reviewed for records of undermined areas and mine shafts along the water pipeline alignment. The map does not indicate undermined areas along the TWP PA -1 water pipeline. Based on previous studies of the area, the risk of subsidence in areas above mapped shallow mine workings are appreciable to severe. Mitigation measures that could be implemented along the TWP PA -1 route in regions of mapped shallow mines include, but are not limited to, the following: • Geophysical surveys of the TWP PA -1 to identify shallow voids. • Implementing ground improvement measures along the TWP PA -1 in shallow mine areas (e.g. foundation grouting, void filling, etc.). • Thickening of the water pipeline walls in areas of higher risk of subsidence. The Colorado Landslide Inventory Map Viewer, (Colorado Geological Survey) was evaluated to view records regarding landslides in Colorado. The viewer contains polygon records of landslides and unstable slope areas digitized from multiple sources and multiple scales by the Colorado Geologic Survey. The viewer does not indicate records of landslides nor unstable slope areas along the TWP PA -1 water pipeline. TWP USR PA -1 ATTACHMENT C.2.C-4 GEOLOGIC HAZARD INFORMATION Thornton Water Project MEAD .o FIRES, DACONO Herdic mum. THORNTON Ida In: (-rolr/fft' CITY OF THORNTON COLORADO 12450 WASHINGTON ST THORNTON CO 80211-2105 '4. is :.0 PLATTEVILLE rI4ESTnNE BO CR : a CLM ST •c.Nt :.... CR20 TWP PA -1 Route in Unincorporated Weld County and Current or Future Road Right -of -Way TWP PA -1 Route in Unincorporated Weld County TWP PA -1 Route outside Unincorporated Weld County 0.6 1.2 --s..-. County Boundary ■ aa� Miles 12/202018 1 inch 1 2 miles 44( V ,r 4 '.O• 5(44 Depth of Cover above Abandoned Coal Mines I 0 -19 50 - 99 t00-149 150 - 199 Railroad RiveriStrearntanal/Ditch 0 Lake/Resrsvor Fault Line r, Mine Extent FORT. L PTON 200 - 249 250 - 299 MIMI 300 - 349 350 - 399 100 - 9999 Figure C.2.c-4 Geologic Hazards C2C-c.2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The TWP PA -1 may encounter areas generally described as marshy with wetlands. A mitigation measure that could be implemented at those locations include installing the water pipeline using trenchless construction methods. In areas with sandy soils and increased sloughing, mitigation measures in those area may include, but are not limited to, the following: • Stream and bank stabilization methods such as riprap protection or concrete mats. • Imported backfill material such as low -strength concrete. • Revegetation. • Soil erosion blankets during construction. • Trench less construction methods. Mitigation measures will be implemented in areas outside of any jurisdictional waters. A subsurface geotechnical investigation of geologic conditions utilizing soil and rock borings will be completed during design to further determine the subsurface soil conditions and associated geological hazards along the TWP PA -1 route. Mitigation measures will be further refined during design to meet site -specific geological hazards. IWP USR PA -1 ATTACHMENT C.2.C-4 GEOLOGIC HAZARD INFORMATION C.2.C-4-3 Attachment C.2.c-5 Groundwater Information This attachment addresses WCC Section 23-2-510 C.2.c and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. Overview of Groundwater Aquifers The TWP PA -1 is located within the Lower South Platte River Basin, which comprises the northeastern quarter of Colorado, east of the Front Range urban corridor, as shown in Figure C.2.c-5. The major aquifers in the Lower South Platte River Basin are unconsolidated alluvial aquifers associated with the South Platte River and its tributaries, the Denver Basin aquifer system and the Dakota -Cheyenne aquifer. The TWP PA -1 crosses through the Lower South Platte River Alluvium, which is specifically associated with the Lower South Platte River and its tributaries including St Vrain Creek, Little Dry Creek and Big Dry Creek. Groundwater levels vary along the TWP PA -1 within Weld County with groundwater levels being higher around surface water sources such as unlined ditches, canals, reservoirs, lakes, and rivers and lower in areas farther away from surface water sources. In general, along the Interstate 25 corridor, which includes the TWP PA -1, where the TWP PA -1 crosses the Lower South Platte River alluvium and other surface water sources, groundwater is anticipated to be less than approximately 20 feet below ground surface as identified in the Groundwater Atlas of Colorado, Special Publication 53 (Topper, Spray, Bellis, Hamilton, & Barkmann, 2003). Along the other stretches of the TWP PA -1, groundwater is generally expected to be found at depths greater than 20 feet below ground surface, although, as mentioned previously, higher groundwater levels may exist near surface water sources. The typical depth of bury for the water pipeline will be a minimum of 4 feet below grade. During the design phase, the depth to groundwater along the TWP PA -1 will be further identified and monitored through geotechnical investigations. TWP USR PA -1 ATTACHMENT C.2.C-5 GROUNDWATER INFORMATION c.2.c-5-1 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 105 WYOMING v. ualaa Irt+, ass Con.4 ni ltd WO+ hesoacdatOMR; eltlu I, > Ciecogial War IGSGS) 1% /wait Gent Eiwa a Mated WUMr Y Pd - `a Gamete Savoy NOTE Waist ot4. Ines win wde.td wet rant tacttd OWA WWI AlpitcNton. .tu h't dated It undid atlantic 1roet M. acts .iMt.covs fElagOiAIIp1E0ataaspa IMP n NEBRASKA 104' EXPLANATION Water Division Office Water Division 1 Boundary Quaternary alluvium South Platte Rivet basin SCALE 1.1,250,000 + Wells of record in DWR permit database toa _sort er.1'^r ... t'. 103' • 1NO Mlles 1r -t —.--w' 41 a'1" 313 TWP USR PA -1 ATTACHMENT C.2.C-5 GROUNDWATER INFORMATION FIGURE C.2.c-5 South Platte River Basin and Associated Alluvial Aquifers C.2.C-5-2 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Construction and Long Term Mitigation Measures Mitigation measures that could be implemented with the TWP PA -1 to minimize impacts to groundwater include the following: • Installation of trench plugs constructed of impervious materials such as bentonite, other clays, or controlled low -strength material within the water pipeline trench. Trench plugs serve as dams that mitigate groundwater flow paths that could develop through typical water pipeline bedding material. Trench plugs could be installed periodically along and perpendicular to the water pipeline to deflect flow into native ground to maintain the natural hydrology. • Installation of an impervious water pipeline trench backfill material such as bentonite, other clays, or controlled low -strength material to mitigate groundwater levels and groundwater flow paths. • Compacting backfill material and soil disturbed during trenching. Compact with a backhoe, vibration machine, rollers, or other equipment. Compaction requirements and testing would be specified in accordance with standards of practice. • Installation of porous backfill material to allow natural groundwater flow paths to flow around the water pipeline. • Dewatering groundwater in trench excavation prior to water pipeline installation. Groundwater encountered in the excavations will be addressed in accordance with CDPHE regulations and the requirements of the construction dewatering permits. Groundwater is likely to be collected and pumped into either temporary retention ponds, land applied, or routed to appropriate storm drains in accordance with the dewatering permits. Additional example BMPs and descriptions that could be used on the TWP PA -1 are provided for reference in Attachment C.2.c-3. The mitigation measures to be implemented will be specified in the construction documents and will be developed as part of the design process, including evaluation of geotechnical investigations. TWP USR PA -1 ATTACHMENT C.2.C-5 GROUNDWATER INFORMATION C.2.C-S-3 Attachment C.2.c-6 Noise Information This attachment addresses WCC Section 23-2-510 C.2.c and the criteria described in WCC Sections 23-2-480 A.5 and 23-2-490 E. During construction of the TWP PA -1, the TWP PA -1 will comply with Weld County's then -existing maximum permissible noise levels (currently WCC Section 14-9-40). Noise from construction equipment will be of short duration during construction. Noise levels from equipment will be controlled through the use of standard maintenance procedures and the use of appropriate mufflers. Construction hours will typically be from 7:00 a.m. to 7:00 p.m., Monday through Saturday unless otherwise approved by Weld County. Construction may extend beyond these hours on an as - required and case -by -case approved basis. For example, some construction activities may be required to complete uninterruptible tasks, meet an in-service date, or minimize short-term impacts to traffic. No noises related to the water pipeline operation are anticipated. TWP USR PA -1 ATTACHMENT C.2.C-6 NOISE INFORMATION C.2 C-6-1 Attachment C.2.c-7 Traffic Narrative This attachment addresses WCC Section 23-2-510 C.2.c, 23-2-510 C.2.k, and 23-2-510 C.2.I, USR Procedural Guide Checklist, and the USR Questionnaire, Engineering Questions 1 through 5, and the criteria described in WCC Sections 23-2-480A.2, 23-2-480A.5, 23-2-490 8, and 23-2-490 E. Guidance from Weld County Public Works staff indicated that a traffic study was not required and that general information in the form of a traffic narrative would meet the USR permit application requirements and that an Improvements Agreement will be required for the construction of the TWP. Traffic information is provided in Section 12, Traffic Study. The following elements are discussed in Section 12: • General Transportation Information • Weld County 2035 Transportation Plan • Other Considerations o Trip Generation o Project Access o Possible Haul, Delivery, and Commuting Routes o Material Storage o Parking and Vehicle Storage o Construction in ROW o Permits • Mitigation Measures TWP USR PA -1 ATTACHMENT C.2.C-7 TRAFFIC NARRATIVE C.2.C-7-1 Section D WCC Approval Standards and Application Requirements This section addresses applicable standards and requirements of WCC Sections 23-2-480 A, 23-2-490, 23-2-510, 23-2-520, and consistency with WCC Chapter 22. WCC Approval Standards WCC Sections 23-2-480 A.1 and WCC 23-2-490 A All reasonable efforts have been made to avoid irrigated cropland or to minimize the negative impacts on agricultural USES and lands. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.1 and 23-2-490A are met as presented in Section C.2.b, Section C.2.c, Section C.2.d, Section C.2.h, Section C.2.i, Questionnaire, Planning, and Appendix A. Where practicable, the criteria for developing the preferred route in unincorporated Weld County included minimizing impacts to agricultural use. Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment. The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The agricultural land use in the TWP PA -1 area is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. Additional measures that will be implemented to minimize impacts to irrigated agricultural land include: • Stripping and storing topsoil separately from excavated trench materials. • Seeding or leaving land fallow in accordance with the individual property owner's agreed -upon reclamation procedures following construction of the water pipeline. The TWP PA -1 will cross multiple irrigation ditches along the water pipeline route within unincorporated Weld County. Thornton has begun outreach to each irrigation ditch company to begin coordination activities. Thornton will obtain appropriate agreements for each crossing before construction. No direct effects on water flow, quantity, quality or timing in the irrigation ditches are anticipated. Crossings will be constructed using either trenchless or open -cut methods as required by the irrigation ditch company and during off season if required. Thornton is committed to cooperating and coordinating with the agricultural community in the vicinity of TWP PA -1. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 WCC Sections 23-2-480 A.2 and 23-2-490 B The PIPELINE - DOMESTIC WATER will not have an undue adverse effect on existing and future development of the surrounding area, as set forth in applicable MASTER PLANS. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.2 and 23-2-490 B are met and that the Application is consistent with WCC Chapter 22 as presented in Section C.2.b, Section C.2.c, Section C.2.e, Section C.2.i, Attachment C.2.c-7, Questionnaire, Planning and Engineering, and Appendix B. The water pipeline and appurtenances will be buried with minimal above ground equipment. There will be minimal effects to the rural character of Weld County. Thornton will construct, operate, and maintain the TWP PA -1 in a manner consistent with existing and planned land uses in Weld County. Thornton is committed to cooperating and coordinating with the agricultural community and industrial and municipal land owners in the vicinity. WCC Chapter 22 - Comprehensive Plan Guiding Principles The Comprehensive Plan, is intended to be used for the general purpose of guiding and accomplishing the coordinated, adjusted and harmonious development of Weld County. Thornton intends to comply with the guiding principles of the Comprehensive Plan relevant to the TWP PA -1. Private Property Rights Thornton will purchase easements through good -faith negotiations with property owners and will only use eminent domain when all other reasonable options have been explored. Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. The process to develop the water pipeline route was iterative, and is a result of negotiations with individual property owners, or is a result of detailed land, utility, or resource surveys that revealed engineering or environmental constraints. Thornton is committed to working with property owners to determine the best location for the water pipeline. The TWP PA -1 is developed in a manner that is respectful of private property rights. Respect for Agriculture Tradition The TWP PA -1 is a low impact, passive use that is consistent with the agricultural setting and zone designation. The water pipeline and fiber optic cable will be buried, and land use effects on agricultural and other similar use will be temporary during construction and are anticipated to be minimal after construction. The water pipeline route is generally located parallel to property lines and adjacent to Weld County future ROW minimizing the effects to agriculture. Agricultural use within the permanent easement can continue after construction. Property owners who grant a permanent easement to Thornton can continue to use the land within the easement area for purposes such as farming, grazing, or access, so long as such uses do not interfere with or endanger the operation of the TWP. The agricultural land use in the TWP PA -1 area is compatible with operation of the TWP PA -1 because the water pipeline and fiber optic cable will be buried below the plow line. Fairness in the Land Use Change Procedure and Regulations Addressing Land Use Changes The TWP PA -1 will not require any land use or zone changes in unincorporated Weld County. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Recognition of Weld County's Diversity The TWP PA -1 represents a low -intensity land use that will be compatible with existing agricultural land use, low density residential development, open space, and other uses, and is otherwise compatible with Weld County's geographic, demographic, cultural, social and economic diversity. To determine the alternative corridor least impactful to local communities, Thornton, in 2015, conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. During the initial outreach meeting with each local government and agency, feedback was collected to determine preference(s) and/or determine potential problems, including planned developments, for the location of the water pipeline within the local government or agency's jurisdictional and/or GMA boundaries. Goals and Policies The Comprehensive Plan contains policies to guide land use within unincorporated areas of Weld County. Many of the policies are directed toward industrial development, commercial development, or other areas not directly related to the TWP PA -1. For this reason, the discussion presented in Section C.2.i addresses only those land use and other policies relevant to the TWP PA -1. The information provided demonstrates that the TWP PA -1 is consistent with the goals and policies of the Comprehensive Plan. Weld County 2035 Transportation Plan The TWP PA -1 was reviewed in conjunction with the area goals and transportation improvement plans outlined in the Weld County 2035 Transportation Plan, (Weld County, 2011). The Weld County 2035 Transportation Plan identifies multiple short range improvement needs within the TWP PA -1 area. Thornton will coordinate design efforts with Weld County projects to minimize conflicts with future plans. If these improvement projects occur within the timeframe of the construction of the TWP PA -1, Thornton will work with Weld County and other involved parties to coordinate construction and minimize disruption. Short range improvement projects identified in the Weld County 2035 Transportation Plan that overlap the TWP PA -1 include the following: • County Wide Low Volume Road Paving Program • County Wide Recycled Asphalt Program • County Wide Full Depth Program • County Wide Gravel Plan • State Highway 66 Access Control Plan • State Highway 52 Access Control Plan No mid -range or long range transportation improvement projects were identified in the Weld County 2035 Transportation Plan that overlap the TWP PA -1. Weld/Adams County Line Crossroads Alignment Study, (Felsburg Holt & Ullevig, 2008 October) was adopted by the Weld County Board of County Commissioners in November 2008. The study includes conceptually how best to realign County Road 17 and Quebec Street to provide a smooth transition across County Road 2. At the request of the property owner, Thornton requests approval to install approximately %2 -mile of the water pipeline and fiber optic cable within the future County Road 17 ROW between County Road 2 and County Road 2.5 as indicated in the study. No specific schedule or specific location for the construction of the road realignment improvement is identified. The road TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 construction schedule will be dependent on the growth and development that occurs within the area Other Applicable Master Plans Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. Thornton understands that, if the TWP PA -1 is located parallel to and within the Weld County ROW, then use of that ROW will require Weld County approval. To accommodate property owner preferences and to minimize impacts to property owners, the water pipeline is proposed to be located in Weld County future ROW at one location and in Weld County ROW at three locations. Other local governments have variously indicated preferences for the water pipeline to be inside or outside of ROW in their GMA; however, Weld County's preference in unincorporated Weld County takes precedence. Thornton reviewed GMA boundaries and transportation master plans for Dacono, Frederick, and Firestone, and coordinated with these local governments to determine the extent of future ROW within GMA boundaries. Thornton will coordinate the location of the water pipeline with these municipalities and Weld County as appropriate. WCC Sections 23-2-480 A.3 and 23-2-490 C The design of the proposed PIPELINE - DOMESTIC WATER mitigates negative impacts on the surrounding area to the greatest extent feasible. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.3 and 23-2-490 C are met as presented in Section C.2.b, Section C.2.c, Section C.2.d, Section C.2.e through Section C.2.i, Section C.2.m, Attachment C.2.c-1 through Attachment C.2.c-7, Questionnaire, Planning and Environmental Health,and Appendix B. Where practicable, the criteria for developing the preferred route in unincorporated Weld County was implemented to minimize impacts to Weld County and included: • Be outside current and future planned road ROW. • Be adjacent to roads, current or future road ROW, existing utility easements, and property lines. • Minimize impacts to agricultural use. • Minimize impacts to existing structures. • Cross waters, irrigation ditches, roads, and railroads perpendicular to the feature. • Minimize road crossings. • Minimize impacts to environmental and cultural resources. • Minimize impacts to open lands/conservation easements. • Provide a sound engineering solution. • Consider property owner preference. Thornton reviewed aerial photography and performed site reconnaissance of the preferred corridor to develop a draft route based on the criteria listed above. Title records were reviewed and rights of entry were requested for properties crossed by the draft route to determine existing encumbrances on these properties. Next, Thornton began discussions with property owners and conducted environmental surveys and planimetric survey of property boundaries, existing infrastructure, and utilities on the properties for which written right of entry was granted to Thornton by the property owner. As part of the surveys, existing easement locations and easement restrictions were identified. Thornton approached TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS i �i THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 easement holders without exclusive rights to discuss opportunities for shared and/or overlapping easements. During discussions with property owners, Thornton reviewed possible water pipeline locations to minimize impacts. Based on information obtained from surveys, easement holders, and property owner discussions, the draft route was revised and refined to reflect the preferred route for the TWP PA -1 as presented in this Application. Mitigation measures for resources are presented throughout this Application as indicated in Table Di: TABLE D.1 Impacted Existing Condition Reference to Mitigation Measures Location in Application Impacted Existing Condition Impact Application Section Reference Private Property 100 -Year Floodplains Air Quality Cultural Drainage and Erosion Geological Hazards Groundwater Jurisdictional Waters Noise Public Health and Safety Special Status Species Transportation Vegetation Wildlife Mitigable Mitigable Mitigable No Significant Impact Mitigable Mitigable Mitigable No Significant Impact Mitigable Mitigable Mitigable Mitigable Mitigable Mitigable Section C.2.a, Land Acquisition; Section C.2.b, Prefei Route in Weld County Future ROW and Preferred Rc Weld County ROW; C.2.d, Construction Activities Attachment C.2.c-1, Floodplain Information Attachment C.2.c-2, Air Quality Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-3, Drainage and Erosion Control Information Attachment C.2.c-4, Geologic Hazards Information Attachment C.2.c-5, Groundwater Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-6, Noise Information Section C.2.f Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-7, Traffic Narrative Appendix B, Natural and Cultural Resources Assessment Appendix B, Natural and Cultural Resources Assessment Private Property Thornton's land services representatives negotiate the purchase of easements where needed based on fair market value. As part of the process to negotiate the purchase of easements where needed, Thornton's land services representatives have worked with property owners along the TWP PA -1 TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS D-5 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 route to explain water pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. In some cases, routing the water pipeline in current or future ROW is proposed to minimize impacts to development, gravel mining operations, or other activities. Additional information regarding these locations is included in Section C.2.b. The area disturbed for constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, thus minimizing long-term impacts. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. Property owners will be compensated for compensable damages, as well as receiving fair market value for easements. WCC Sections 23-2-480 A.4 and 23-2-490 D The site shall be maintained in such a manner so as to control soil erosion, dust and the growth of NOXIOUS WEEDS. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.4 and 23-2-490 D are met as presented in Section C.2.c, Section C.2.d, Section C.2.f, Section C.2.i, Section C.2.m, Attachment C.2.c-3, Attachment C.2.c-4, Questionnaire, Environmental Health and Appendix B. Soil Erosion Surface drainage stormwater BMPs will include application of erosion control techniques and the successful revegetation of disturbed areas. The required Weld County grading permit and CDPHE construction stormwater permits and SWMPs will include detailed descriptions of BMPs that will be used to protect surface hydrology and water quality. BMPs will be implemented under the SWMP to minimize or mitigate soil erosion and revegetate disturbed areas. Soil erodibility determined by the NRCS K factor values represent the susceptibility of soil erosion, transportability of the sediment, and the amount and rate of runoff given a particular rainfall event. Approximately 70% of the TWP PA -1 is located within the low -to -medium soil erodibility range. A low -to -medium soil erodibility factor indicates that slight to moderate erosion is likely and that erosion -control measures may be needed. Approximately 30% of the TWP PA -1 is located within the high soil erodibility range. High soil erodibility indicates that erosion is very likely and that erosion -control measures are advised, including revegetation of bare areas. BMPs will be maintained and inspected. Failed BMPs will be replaced as required. After work is complete and final stabilization has been achieved, temporary BMPs will be removed. Final stabilization will be reached as defined in the Weld County Grading Permit and Stormwater Discharge Associated with Construction Activity - General Permit. In areas with sandy soils and increased sloughing, mitigation measures in those area may include, but are not limited to, the following: • Stream and bank stabilization methods such as riprap protection or concrete mats • Imported backfill material such as low -strength concrete • Revegetation • Soil erosion blankets during construction • Trenchiess construction methods Mitigation measures will be implemented in areas outside of any jurisdictional waters. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS ?6 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 A subsurface geotechnical investigation of geologic conditions utilizing soil and rock borings will be completed during design to further determine the subsurface soil conditions and associated geological hazards along the TWP PA -1 route. Mitigation measures will be further refined during design to meet site -specific geological hazards Dust The amount of surface clearing required for construction will exceed 25 acres; therefore, Thornton and/or the TWP PA -1 contractors will develop a fugitive dust control plan, submit an air pollution emissions notice, and obtain a permit from CDPHE before construction activities in accordance with state air quality regulations. Construction is anticipated to be constructed under multiple packages; therefore, multiple permits will be obtained as required. Construction activities, such as vehicles driven over cleared ground, general disturbance to vegetated areas, or soil stockpiles susceptible to winds, can cause fugitive dust. During construction, dust control measures will be implemented. Examples of these mitigation measures that may be used on the TWP PA -1 include: • Speed limits for construction vehicles within the work area • Water application to disturbed areas, dirt access roads, and stockpiles • Erosion control techniques and BMPs • Revegetation of disturbed areas where appropriate following construction activities Noxious Weeds Noxious weeds within the TWP PA -1 construction limits, including within Weld County ROW, will be controlled using the following IPM methods as described by the CDOA. The following methods have been developed to control noxious weeds in a manner that prevents harm to human health and to environmentally sensitive areas such as waterways and desirable vegetation including native trees. • Major equipment (e.g. truck equipment and backhoes) will be cleaned by high pressure air or water spray before being delivered to the project area to avoid introducing undesirable plants and noxious weeds. • If practicable, topsoil should not be salvaged in any area densely infested with noxious weeds. • For areas where removal is not practicable or only a small area of noxious weeds is present, pre- treat all noxious weed populations in the topsoil. • Fertilizer or other soil amendments will not be used unless recommended by a revegetation specialist based on site -specific conditions. The use of fertilizers will be restricted because they can promote noxious weeds and can be detrimental to native species in the revegetation mix. • After construction is complete, all disturbed areas will be properly revegetated as quickly as possible. Prompt revegetation with appropriate species is essential for preventing the spread of noxious weeds. • Certified weed -free seed and mulch will be used for revegetation. Weed -free straw bales will be used for sediment barriers. • If stands of noxious weeds become established, weed control would be implemented following an integrated approach specific to the weed species present. • Because new control methods are continually being developed, particularly for herbicide applications, any control methods used will follow the CDOA and Weld County recommendations at the time of implementation. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMI i APPLICATION 1 WCC Sections 23-2-480 A.5 and 23-2-490 E The applicant has agreed to implement any reasonable measures deemed necessary by the Board of County Commissioners to ensure that the health, safety and welfare of the inhabitants of the COUNTY will be protected, and to mitigate or minimize any potential adverse impacts from the proposed PIPELINE - DOMESTIC WATER. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.5 and 23-2- 490 E are met as presented in Section C.2.b, Section C.2.c, Section C.2.d, Section C.2.f, Section C.2.g, Section C.2.i, Section C.2.m, Attachment C.2.c-1 through Attachment C.2.c-7, Questionnaire, Environmental Health, Appendix A, and Appendix B. Reasonable measures to ensure that the health, safety, and welfare of the inhabitants of Weld County will be protected, and to mitigate or minimize potential adverse impacts from the TWP PA -1 are included in the Application. Environmental Hazards Thornton and the TWP PA -1 contractors will provide and maintain sanitary accommodations for the use of their employees during construction of the TWP PA -1 in a manner that complies with the requirements and regulations of health departments and other governmental bodies. These accommodations, including trash dumpsters and portable toilets, will be located in several locations along the TWP PA -1 route based on the general plan for construction. Construction waste will be stockpiled in construction staging areas and removed from the construction site during the construction process. Trash dumpsters will be emptied approximately every Ito 2 weeks. The TWP PA -1 will not include the need for permanent dumpsters or sanitary facilities. Construction, operation, and maintenance activities will follow best management practices for the management of wastes to avoid and minimize impacts from potential spills or other releases to the environment. These practices are discussed in greater detail below. Adverse impacts from the release of construction or operations wastes are not expected. Hazardous Materials and Waste Management Mitigation Measures Construction, operation, and maintenance activities involving Thornton or the TWP PA -1 contractors bringing any hazardous materials onto the site will comply with applicable federal, state, and local laws and regulations regarding the handling, storage, disposal, transportation, and use of hazardous substances. In its contract with the TWP PA -1 contractors, Thornton will require that the TWP PA -1 contractors comply with applicable laws. If trenching activities uncover previously unknown areas of contamination that are apparent, work will be stopped until the party responsible for such contamination has properly managed and/or disposed of such contamination. Construction staging areas will be located and arranged in a manner to preserve trees and vegetation to the extent feasible. Excavated material or other construction materials will not be stockpiled or deposited near or on stream banks or other watercourse perimeters where they could be washed away by high water or storm runoff, or could encroach upon stream banks. Best management practices will be implemented for stormwater management. A summary of BMPs to protect water resources from potential contamination is provided in Attachment C.2.c-3, Drainage and Erosion Control Information. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS ) 8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Fueling Mitigation and Safety Measures If possible, fueling requirements will be met before arrival at the construction site. Heavy equipment left on site for construction activities will require onsite fueling at staging areas or the construction site. No bulk fuel storage is anticipated to occur on site. Fueling vehicles will be equipped with spill kits and fire extinguishers, and personnel will be properly trained in spill prevention, control, and countermeasures. To minimize the potential for a spill during fuel transfers and be prepared in the event of a spill, the following measures, as provided in the Code of Colorado Regulations [CCR] and Code of Federal Regulations [CFR], will be followed during loading/unloading of fuel: • Keep fire away while loading/unloading. Persons in the vicinity are forbidden to smoke, light matches, or carry any flame or lighted cigar, pipe, or cigarette. 49CFR 177.834(c, d) • Fuel will not be loaded/unloaded from any motor vehicle while the engine is running. The exception is when the engine of the vehicle is to be used in the operation of the pump. 49CFR 177.837(a) • The fuel tank records will be reviewed to determine the theoretical fuel tank level. 7CCR 1101- 14 S2-3-1 and 52-4-2(a)(2) • The fuel tank level gauge will be inspected to determine the actual fuel tank level before u nloading takes place. (Note: Any fuel tank level discrepancies will be resolved before hooking u p to the fuel tank.) 7CCR 1101-14 S2-3-1 & S2 -4-2(a)(2) • The supply truck driver will observe the transfer during the entire operation. 49CFR 177.834(i)(2) • Once the truck is in position, its emergency brake will be applied and reasonable precautions will be taken to prevent motion of the truck during unloading (example: utilize wheel chocks when parked on an incline). 49CFR 177.834(e) • Signs must be posted that remind drivers not to pull away before detaching hoses. 40CFR 112.7(h)(3) • Containers and cargo tanks will be grounded before and during transfer. 49CFR 177.837(b) & (c) • The transfer line must be properly disengaged, and the valves and piping of both the fuel tank and truck must be checked for leaks before allowing the truck to leave the site. (40CFR 112.7 h(4) for trucks) Traffic and Roads and Mitigation Measures Impacts caused by construction equipment and activity on Weld County roads will be short term during construction. Access will be maintained for local area residents. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. Thornton places a high priority on safety during construction. Thornton will coordinate with local school districts regarding construction and haul routes and school bus traffic. The TWP PA -1 contractors will implement traffic management plans based upon local traffic control requirements and general safe operating practices. Proper signage, flaggers, lighting, speed limits, work hours, postings, notifications, and other precautionary safety measures will be taken to protect the residents of Weld County and the TWP PA -1 contractors' employees. Emergency vehicle access needs will be maintained and construction activities coordinated with local fire departments, police departments, ambulance services, and other emergency responders as necessary. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The water pipeline construction will utilize trenchless construction methods under Weld County roads where required by Weld County, resulting in little to no disruption to traffic at those locations. Temporary traffic delays and detours will be needed where the water pipeline is installed by open - cut construction across existing roads. Traffic disruption will be temporary, and will cease after construction. Traffic control plans will be implemented before construction, subject to approval and acquisition of permits from Weld County Engineering. Additional information and mitigation measures are presented in Attachment C.2.c-7, Traffic Narrative. Operations One of the greatest risks to buried pipelines is excavation by individuals unaware of the location of a pipeline. Pipeline markers will be installed in the pipeline permanent easement to indicate that a water pipeline is buried nearby. The markers will identify the water pipeline, Thornton as the pipeline operator, the operator's 24 -hour emergency contact number, and the area's utility notification number. Marking tape indicating that a water pipeline is buried in the location will also be installed above the water pipeline for the entire length of the water pipeline. The majority of the water pipeline in unincorporated Weld County will be located within permanent easements. This approach reduces the probability that individuals could damage the water pipeline with ground - disturbing activities. The water pipeline will be designed and constructed to be water tight. Pipe materials will be required to undergo shop testing before installation as well as hydrostatic field testing after installation. The water pipeline and appurtenances will be coated and lined to prevent corrosion. As an additional safety measure, project components will be installed with cathodic protection, which will control the corrosion of a metal surface. Cathodic protection systems are commonly used to protect steel water pipelines. Other Mitigation Measures Mitigation measures for resources are presented throughout this Application as indicated in Table D.2: TABLE D.2 Impacted Existing Condition Reference to Mitigation Measures Location in Application Impacted Existing Condition Impact Application Section Reference Private Property 100 -Year Floodplains Air Quality Cultural Drainage and Erosion Mitigable Mitigable Mitigable No Significant Impact Mitigable TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS Section C.2.a, Land Acquisition; Section C.2.b, Prefe' Route in Weld County Future ROW and Preferred II( Weld County ROW; C.2.d, Construction Activities Attachment C.2.c-1, Floodplain Information Attachment C.2.c-2, Air Quality Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-3, Drainage and Erosion Control Information D-10 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE D.2 Impacted Existing Condition Reference to Mitigation Measures Location in Application Impacted Existing Condition Impact Application Section Reference Geological Hazards Groundwater Jurisdictional Waters Noise Public Health and Safety Special Status Species Transportation Vegetation Wildlife Mitigable Mitigable No Significant Impact Mitigable Mitigable Mitigable Mitigable Mitigable Mitigable Attachment C.2.c-4, Geologic Hazards Information Attachment C.2.c-5, Groundwater Information Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-6, Noise Information Section C.2.f Appendix B, Natural and Cultural Resources Assessment Attachment C.2.c-7, Traffic Narrative Appendix B, Natural and Cultural Resources Assessment Appendix B, Natural and Cultural Resources Assessment Private Property Thornton's land services representatives negotiate the purchase of easements where needed based on fair market value. As part of the process to negotiate the purchase of easements where needed, Thornton's land services representatives have worked with property owners along the TWP PA -1 route to explain water pipeline construction, operations, and maintenance activities and to determine the location for the water pipeline that best meets property owners' preferences, including routing the water pipeline to minimize impacts to the operation of irrigation equipment, structures, trees, and other infrastructure. In some cases, routing the water pipeline in current or future ROW is proposed to minimize impacts to development, gravel mining operations, or other activities. Additional information regarding these locations is included in Section C.2.b. The area disturbed for constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, thus minimizing long-term impacts. Potential future repairs and maintenance could affect discrete areas of vegetation when the water pipeline is accessed in a particular location. Any vegetated areas disturbed during maintenance or required repairs will be restored by the methods used during construction. Property owners will be compensated for compensable damages, as well as receiving fair market value for easements. WCC Sections 23-2-480 A.6 and 23-2-490 F All reasonable alternatives to the proposal have been adequately assessed, and the proposed action is consistent with the best interests of the people of the COUNTY and represents a balanced use of resources in the affected area. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.6 and 23-2-490 F are met as presented in Section C.2.b, Section C.2.c, Section C.2.e, Section C.2.h, Section C.2.i, Questionnaire, Planning, and Appendix A. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS D-11 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Preferred Route Selection A series of evaluations were conducted to develop the preferred route for the TWP PA -1. A multi- step process was used with considerable thought and consideration to minimize impacts to local communities and future development. A three -tiered evaluation program was implemented: First, alternative conceptual project configurations were evaluated and a preferred delivery concept was selected based on meeting the project purpose and need. See Purpose and Need section. Second, alternative project corridors consistent with the preferred delivery concept and within a broader evaluation area were evaluated with input from potentially impacted communities to determine a preferred corridor. Lastly, with input from potentially impacted property owners within the preferred corridor, route configurations were evaluated within the preferred corridor from step two. Evaluations are summarized below: • Concept Evaluation - High-level evaluation of four alternative conceptual project configurations to determine the preferred TWP delivery concept. • Preferred Corridor Evaluation- Evaluation of four corridor alternatives within a broader evaluation area utilizing the preferred TWP delivery concept to determine a preferred corridor. • Preferred Route Development — Evaluation of possible locations for the water pipeline within the preferred corridor for suitability to determine a preferred route. Concept Evaluation A high-level evaluation of four (4) alternative conceptual project configurations was conducted to determine the preferred TWP delivery concept. The configuration alternatives included: • Concept 1: Pipeline from WSSC reservoirs to Thornton • Concept 2: Pipeline from lower on the Cache la Poudre River to Thornton • Concept 3: Colorado Big Thompson System Exchange/Deliveries • Concept 4: River Exchange up the South Platte River Criteria used to evaluate the relative probability of success at meeting TWP purpose and need for each conceptual project configuration included: • Water quality as related to meeting the need for a higher quality water source for Thornton's water portfolio; • Water quantity as related to meeting the annual volumetric water need over the project planning period; • Permitting requirements as related to meeting the required in-service date for the TWP; and • Intergovernmental constraints as related to meeting the required in-service date for the TWP. Table D.3 presents a summary of the implementation considerations for each alternative conceptual project configuration, and a probability of success ranking with a ranking of 1 having the highest probability of success in meeting the TWP purpose and need. Concept 1 had the best probability of success. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE D.3 Concept Evaluation Implementation Considerations Concept Alternative Implementation Considerations Probability of Success Ranking (1 = Best) Concept 1 Concept 2 Concept 3 Concept 4 Sufficient volume of higher quality water can be obtained; access to storage provides more reliable delivery and allows reduced facility (pump station and pipeline) sizing; subject to Larimer County 1041 regulations; subject to Weld County Use by Special Review regulations; water pipeline crossings of jurisdictional waters will utilize trenchless construction methods. Sufficient volume of water likely, but less than Concept 1 due to stream losses assessed by State Engineer's Office; water quality is low, at greater risk for contamination events, and likely to further degrade over time; lack of storage results in less reliability and flexibility and requires larger facility (pump station and pipeline) sizing; connections to the Cache la Poudre River will require Federal permitting; flow measuring structures required at river dry -up points will require Federal permitting; subject to Weld County Use by Special Review regulations. Diversions at County Line Road at the Cache la Poudre River would require more pumping head, resulting in more energy - intensive, less sustainable operation as compared to Concept 1. Production of sufficient volume of water to meet projected water needs over the project planning period is highly unlikely because of declining potential for exchange; does not provide highest water quality source; use of facilities requires admission to Northern Colorado Water Conservancy District (NCWCD); Thornton's application to become a member of NCWCD would require a Federal permit; pipeline to Thornton would be subject to Boulder County 1041 regulations. Produces inadequate supply to meet projected water needs over the project planning period, even with addition of new storage and favorable hydrologic conditions; poorest water quality relative to other conceptual project configurations; uncertainty of future river administration reduces reliability; new diversions and storage facilities will require a Federal permit. 1 2 4 3 The result of the concept evaluation determined that Concept 1, a pipeline from the WSSC reservoirs, is the only alternative that can deliver the needed quality and quantity of water in the required timeframe. It should be noted that Concept 1 does not alter the pattern of historic water diversions. Diversions began from the Cache la Poudre River into the WSSC system in 1882. Preferred Corridor Evaluation Before conducting public outreach, which is not required by Weld County's USR permit application process, and to determine the alternative corridor least impactful to local communities, Thornton conducted a series of outreach meetings with local governments and agencies that could be impacted by the TWP. Input from local governments and agencies was utilized in developing alternative corridors and identifying the preferred corridor. An evaluation area was established for developing alternative corridors. The evaluation area consists of a 3- to 51/2 -mile wide path from WSSC Reservoir No. 4 to Thornton. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS D-13 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The evaluation area limits are described as follows: • The east/west portion of the evaluation area is approximately 3 miles wide, centered near WSSC Reservoir No. 4. The evaluation area extends from Larimer County Road 19 east to Weld County Road 17 %. The southern extent of the evaluation area is bounded by Douglas Road and the northern extent by Larimer County Road 60/Weld County Road 96. • The north/south portion of the evaluation area is approximately 4 to 51/2 miles wide. It extends from Larimer County Road 60/Weld County Road 96 south to 168` Avenue. The evaluation area is bounded by 1-25 on the west and Weld County road 17 %2 on the east. Alternative corridors within the evaluation area were identified using readily and publicly available geographic information system (GIS) data. Guidelines used to identify the alternative corridors include the following: • Input from potentially affected local governments • Minimizing impacts to ROW • Minimizing impacts to water bodies and wetlands • Bypassing geological hazardous areas • Minimizing impacts to environmentally sensitive areas such as open space or conservation areas • Minimize impacts to congested areas, typically in developed, densely populated areas • Utilizing Thornton -owned property • Following ROW/easements/property lines Four 1 -mile wide alternative corridors were initially developed based on input received from local government outreach. These four alternative corridors were analyzed using non -economic data to determine the preferred corridor. The non -economic criteria and method of measurement used in the evaluation of alternative corridors included the following: • Local Government Preference - Rating based on compliance with local government preferences • Geologic Hazards - Estimated length within areas identified as having mine subsidence • Community Impact- Number of local governments crossed • Wetland/Riparian Crossing - Estimated length of wetland/riparian areas crossed • Floodplain Crossings - Estimated length of floodplain areas crossed • Parcel Owners - Number of unique parcel owners crossed • ROW - Estimated possible length of water pipeline in ROW Information regarding the preferred corridor alternative analysis and selection process is included in Technical Report, Thornton Water Project, Reach 2 Alternative Corridors Analysis, September 2016 (see Appendix A). The location of the preferred corridor was based on the TWP purpose and need, as well as information and guidance received from Weld County Public Works and Planning staff, Firestone, Frederick, Dacono, and others. Preferred Route Development After the preferred corridor was established, specific alignments within the preferred corridor were identified to determine the preferred route. Thornton established criteria, reviewed existing infrastructure and encumbrances, and considered input from property owners, Weld County Public Works staff, and local governments to determine the preferred route. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS D-14 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Weld County staff indicated a preference that the final water pipeline alignment be located outside ROW and outside future planned ROW unless approved by Weld County. Thornton met with Weld County Public Works staff to determine the location and extent of future planned ROW. Thornton understands that, if the TWP PA -1 is located parallel to and within Weld County ROW, then use of that ROW will require Weld County approval. Other local governments have variously indicated preferences for the water pipeline to be inside or outside of ROW in their GMA; however, Weld County's preference in unincorporated Weld County takes precedence. Thornton reviewed GMA boundaries and transportation master plans for Dacono, Frederick, and Firestone, and coordinated with these local governments to determine the extent of future ROW within GMA boundaries. Thornton will coordinate the location of the water pipeline with these municipalities and Weld County as appropriate. Where practicable, the criteria for developing the preferred route in unincorporated Weld County included: • Be outside current and future planned road ROW. • Be adjacent to roads, current or future road ROW, existing utility easements, and property lines. • Minimize impacts to agricultural use. • Consider property owner preference • Minimize impacts to existing structures. • Cross waters, irrigation ditches, roads, and railroads perpendicular to the feature. • Minimize road crossings. • Minimize impacts to environmental and cultural resources. • Minimize impacts to open lands/conservation easements. • Provide a sound engineering solution Thornton reviewed aerial photography and performed site reconnaissance of the preferred corridor to develop a draft route based on the criteria listed above. Title records were reviewed and rights of entry were requested for properties crossed by the draft route to determine existing encumbrances on these properties. Next, Thornton began discussions with property owners and conducted environmental surveys and planimetric survey of property boundaries, existing infrastructure, and utilities on the properties for which written right of entry was granted to Thornton by the property owner. As part of the surveys, existing easement locations and easement restrictions were identified. Thornton approached easement holders without exclusive rights to discuss opportunities for shared and/or overlapping easements. During discussions with property owners, Thornton reviewed possible water pipeline locations to minimize impacts. Based on information obtained from surveys, easement holders, and property owner discussions, the draft route was revised and refined to reflect the preferred route for the TWP PA -1 as presented in this Application. WCC Sections 23-2-480 A.7 and 23-2-490 G The nature and location or expansion of the PIPELINE — DOMESTIC WATER will not unreasonably interfere with any significant wildlife habitat and will not unreasonably affect any endangered wildlife species, unique natural resource, known historic landmark or archaeological site within the affected area. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.7 and 23-2-490 G are met as presented in Section C.2.b, Section C.2.c, Section C.2.d, Section C.2.f, Section TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 C.2.i, Attachment C.2.c-3, Questionnaire, Planning and Environmental Health, Appendix A, and Appendix B. The TWP PA -1 will utilize trenchless construction methods for water pipeline installation to minimize impacts to natural resources such as jurisdictional waters and wildlife habitat associated with those areas. The area disturbed in constructing the water pipeline will be restored to pre -construction conditions, including grade and vegetation, minimizing long-term impacts to wildlife. The TWP PA -1 was assessed for potential jurisdictional waters and wildlife habitat using publicly available mapping and aerial photographs, and by conducting a windshield survey of areas that could be publicly accessed. Information on terrestrial and aquatic animals was obtained from various sources including CPW, Colorado Natural Diversity Information System, Colorado Natural Heritage Program, USFWS, published literature, and field surveys. Site surveys will be performed to aid in the determination of jurisdictional waters and wildlife habitat. Information from the assessment and survey information will be used to develop final design. Mitigation methods to minimize impacts to these areas will be incorporated into the design and construction as appropriate. Jurisdictional water crossings will be constructed using trenchless construction methods. An assessment was conducted for potential habitat of federally threatened, endangered, and candidate species protected under the Endangered Species Act. The TWP PA -1 will have no effect on federally listed threatened, endangered, or candidate wildlife or plant species. Mitigation measures such as restricting construction during nesting seasons may be implemented as appropriate. An assessment of the TWP PA -1 was conducted for wildlife habitat and migration corridors. A description of the ways that wildlife use the area within and near the TWP PA -1 and the species involved with proposed setbacks and other potential mitigation measures can be found in the Natural and Cultural Resources Assessment in Appendix B. The TWP PA -1 could temporarily impede movement of wildlife and result in the displacement of some individuals during construction activities. During construction, wildlife crossovers (trench plugs) with ramps on each side of the trench could be installed at well-defined game trails. The water pipeline would not provide a barrier to wildlife movement over the long term because the water pipeline would be buried. Thornton has sent letters to CPW and USFWS to initiate coordination activities and Thornton has attended coordination meetings with CPW and will continue coordination with CPW as the TWP PA - 1 is developed and implemented. CPW has published recommended buffer zones and seasonal restrictions for raptors in Colorado to minimize the effects of disturbance. Thornton will review the CPW raptor nest data and perform nest surveys for raptors before the nesting season to identify potential active raptor nests before construction. Thornton will coordinate with CPW regarding any potential conflicts between scheduled construction and potential raptor nests and develop measures acceptable to CPW to minimize impacts on nesting raptors. Impacts to wildlife areas will be temporary and only occur while the water pipeline construction is taking place. After construction is completed, the area will be restored to pre -construction grades and vegetation. The water pipeline and fiber optic cable will be compatible with existing wildlife uses and wildlife use within the permanent easement can continue after construction. The TWP PA -1 is not anticipated to impact wildlife uses, such as hunting, trapping, and fishing practices once the water pipeline and fiber optic cable are installed. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 Additional information can be found in the Natural and Cultural Resources Assessment in Appendix B. WCC Sections 23-2-480 A.8 and 23-2-490 H No adverse impact, from stormwater runoff, to the public rights -of -way and/or surrounding properties as a result of the PIPELINE - DOMESTIC WATER. The Application demonstrates that the standards described in WCC Sections 23-2-480 A.8 and 23-2- 490 H are met as presented in Section C.2.c, Section C.2.d, Section C.2.f, Section C.2.i, Section C.2.m, Attachment C.2.c-3, Attachment C.2.c-4, and Questionnaire, Planning and Environmental Health. Prior to construction, Thornton and/or the TWP contractors will obtain the required Weld County grading permit and Stormwater Discharge Associated with Construction Activity — General Permit from CDPHE. SWMPs will be developed under the general permit to protect the quality of stormwater runoff during construction in accordance with the Construction Stormwater Discharge Permit requirements. Surface drainage BMPs implemented during construction will include application of erosion control techniques and the successful revegetation of disturbed areas. SWMPs will include detailed descriptions of BMPs that will be used to control erosion. Disturbed areas will be restored to pre -construction grades and revegetated where appropriate after construction. BMPs will be maintained and inspected. Failed BMPs will be replaced as required. After work is complete and final stabilization has been achieved, temporary BMPs will be removed. Final stabilization will be reached as defined in the Weld County Grading Permit and Stormwater Discharge Associated with Construction Activity - General Permit. Within urbanized areas subject to National Pollutant Discharge Elimination System (NPDES) and Colorado Discharge Permit System (CDPS) municipal separate storm sewer system (MS4) regulations, project components will be designed to comply with applicable requirements of the local MS4. Weld County staff indicated in the Pre -Application meetings that the TWP PA -1 is located within the boundaries of MS4 permitted areas in Weld County. TWP PA -1 designers will coordinate with Weld County Public Works staff during the design phase so that requirements are indicated in the construction documents as appropriate. The TWP PA -1 designers will reference appropriate technical manuals at the time of development of the SWMPs, and select and indicate appropriate locations for BMPs. Example descriptions of common construction BMPs that could be used during construction are provided for reference purposes in Section C.2.c-3. The TWP PA -1 will be restored following construction to pre -construction grades and vegetation conditions with few exceptions. An example of an exception would be minor grading necessary following construction to restore a stable slope. In general, following TWP PA -1 construction, the restored TWP PA -1 site will drain in the same manner and at generally the same rate as it did before construction. To mitigate impacts caused by erosion, restoration activities for the TWP PA -1 will consist of vegetation restoration and maintenance of areas disturbed by the TWP PA -1. Effects to vegetation along the easement areas will be temporary and mostly associated with construction. Potential future repairs and maintenance could affect discrete areas of vegetation so that the water pipeline and appurtenances may be accessed in a particular location. Any vegetated areas disturbed during maintenance or any required repairs will be restored by the methods used during construction. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 WCC Application Requirements 23-2-500 Application for use by special review permit. The Application demonstrates that the requirements described in WCC Section 23-2-500 are met as presented in USR Procedural Guide Checklist. The Application includes a complete USR Application form signed by city of Thornton; Brett E. Henry, Executive Director- Infrastructure Department. 23-2-510 Application Requirements The Application demonstrates that the requirements described in WCC Section 23-2-510 are met as presented in Section C.2.a through Section C.2.m, Attachment C.2.c-1 through Attachment C.2.c-7, Appendix A, Appendix B, Appendix C, Appendix D, and Volume 3, USR XX-XXXX Permit Maps. Section A presents the applicant's (Thornton's) name and telephone number as required by WCC Section 23-2-510 A. Section B presents the applicant's (Thornton's) address and general OFFICE as required by WCC Section 23-2-510 B. Section C presents a Summary Statement of the project (TWP PA -1) as required by WCC Section 23-2-510 C. Attachment C.2.c-1, Attachment C.2.c-2, Attachment C.2.c-3, Attachment C.2.c-4, Attachment C.2.c-5, Attachment C.2.c-6, Attachment C.2.c-7, and Appendix B presents procedures to mitigate any adverse impacts of the proposed route (TWP PA -1 preferred route) as required by WCC Section 23-2-510 C.2. c. 23-2-520 Drawing requirements for PIPELINE — DOMESTIC WATER maps. The Application demonstrates that the requirements described in WCC Sections 23-2-440 F, 23-2-520 3, 23-2-520 4, 23-2-520 5, 23-2-520 7, 23-2-520 8, 23-2-520 9 (1) through 23-2-520 (3) are met as presented in Volume 3, USR XX-XXXX Permit Maps. In accordance with WCC Section 23-2-440 F, the Application includes an electronic file (Adobe Acrobat © Portable Document Format, PDF; USB flash drive) of Volume 3, USR XX-XXXX Permit Maps for Weld County's preliminary approval. The USR number for the TWP PA -1 to be provided by Weld County will be included on final maps. Thornton has met multiple times with staff from the Weld County Planning and Public Works Departments regarding the TWP PA -1, the USR permit application process and permit requirements, including review of USR maps. The Pre -Application meetings held on May 27, 2016 and August 25, 2016 along with follow-up meetings provided Thornton with guidance and recommendations from Weld County staff to help ensure a complete permit application submittal. Thornton has continued to consult with the Weld County Planning and Public Works Departments throughout the development of this Application, including periodic telephone and e-mail communications. The USR maps provided are in accordance with guidance from Weld County Planning and Public Works staff. Maps include the following: • A vicinity map. • Detailed route maps. • Legend, title, scale, and north arrow. • Property owner names and parcel numbers of properties crossed by the TWP PA -1. • Quarter Section and Section, Township and Range of properties crossed by the TWP PA -1. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS :8 THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 The Volume 3, USR XX-XXXX Permit Maps will be finalized pending approval by Weld County Board of County Commissioners to include the following as required by WCC Sections 23-2-5201, 23-2-520 2, 23-2-520 6, and 23-2-520 9 (4): • 24 inches by 36 inches in size drafted in black drawing ink on mylar or other Weld County approved drafting media. • Development standards as directed by Weld County. • Certificates with Thornton's signature. • Reception number for the easements acquired by Thornton for the TWP PA -1. Approval Standards and Requirements Cross -Reference Table D.4 presents a cross-reference guide showing how this Application meets the WCC approval standards, application requirements, and drawing requirements, as well as consistency with the WCC Chapter 22. TWP USR PA -1 SECTION D APPROVAL STANDARDS AND REQUIREMENTS D-19 THORN TON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE D.4 WCC Standards and Application Requirements Cross Reference Guide Applicable WCC Standards and Application Requirements Volume 1 Cl,' O $ c A - Applicant Name and Phone B - Applicant Address Summary Statement USR Procedural Guide Checklist C.1 - Description of Appurtenant Facilities/Structures C.2.a • Description of Pipeline C.2.b • Description of Preferred Route and Selection Criteria C.2.c Procedures for Mitigating Adverse impacts C.2.d • Outline of Planned Construction Schedule C.2.e - Information on Public Meetings C.2.f - Description of HAZARDS C.2.g - Description of Emergency Procedures C.2.h Description of Procedures to Avoid Impacts to Irrigated Agricultural land I C.2.i - Conformance with Chapter 22 C.2.j - Decommissioning Plan C.2.k— Traffic Narrative C2.I - Description of Haul Routes C.2.m —Soils Report Attachment C.2.c-1- Floodplain Information Attachment C.2.c-2 - Air Quality Information Attachment C2.c-3 - Drainage and Erosion Control Information Attachment C.2.c-4 - Geologic Hazards Information Attachment C.2.c-5 - Groundwater Information Attachment C.2.c-6 - Noise Information Attachment C2.c-7 - Traffic Narrative Section 1 Pre -application Meeting Minutes Section 2 Application Form Section 3 Authorization Form Section 4 Questionnaire o. C 2 K M an 1 d N Section 6 Certificate of Conveyances Form Section 7 list of Property Owners Section 8 Evidence of Adequate Water Supply Section 9 Evidence of Adequate Sewage Disposal Section 10 Notice of Inquiry Section 11 Detention Design/Drainage Report Section 12 Traffic Study Section 13 Community Meeting Section 14 Electronic Copy Section 15 Application Fee Section 16 Investigation Fee Appendix A Alternatives Analysis Appendix 8 Natural and Cultural Resources Report Appendix C Public Outreach Information Appendix D Stakeholder Outreach Information USR Questionnaire - Planning USR Questionnaire • Engineering USR Questionnaire - Environmental Health USR Questionnaire — Building WCC Section 23-2-480 Duties of planning commission/WCC Section 23.2-490 Duties of Board of County Commissioners Consistency with WCC Chapter 22 ✓ S 1 V V f f S S V I V / f 480A1/232490A All reasonable efforts have been made to avoid irrigated cropland or to minimize the negative impacts on agricultural USES and lands ✓ V V V ✓ V f 23.2 480 A.2/23-2.-490 B - The PIPELINE • DOMESTIC WA1 ER will not have an undue adverse effect on existing and future development of the surrounding area, as set forth in applicable MASTER PLANS ✓ 1 V ✓ ' WP USR PA -I SECTION D APPROVAL STANDARDS AND REQUIREMENTS THORNTON WATER PROJECT WELD COUNTY USR PERMIT APPLICATION 1 TABLE D.4 WCC Standards and Application Requirements Cross•Reference Guide Applicable WCC Standards and Application Requirements Volume 1 Volume 2 Volume 3 USR XX-XXXX Permit Maps € 'g E A - Applicant Name and Phone B - Applicant Address Summary Statement USR Procedural Guide Checklist Appendices Cl- Description of Appurtenant Facilities/Structures C.2.a - Description of Pipeline C2.b - Description of Preferred Route and Selection Criteria C.2.c Procedures for Mitigating Adverse Impacts C.2.d - Outline of Planned Construction Schedule C.2.e - information on Public Meetings 2 8 • .� v [C.2.g - Description of Emergency Procedures C.2.h Description of Procedures to Avoid Impacts to Irrigated Agricultural Land C.2.1- Conformance with Chapter 22 C.2.1- Decommissioning Plan C.2.k — Traffic Narrative C.2.I - Description of Haul Routes g ..t►- i E ei a Attachment C.2.c-1- Floodplain Information Attachment C2.c-2 - Air Quality Information Attachment C.2.c-3 - Drainage and Erosion Control Information Attachment C.2.c-4 - Geologic Hazards • Information Attachment C.2.c-5 - Groundwater Information Attachment C.2.c-6 - Noise Information Attachment C.2.c-7 - Traffic Narrative Section 1 Pre -application Meeting Minutes Section 2 Application Form Section 3 Authorization Form Section 4 Questionnaire Section 5 USR Map Section 6 Certificate of Conveyances Form Section 7 List of Property Owners Section 8 Evidence of Adequate Water Supply Section 9 Evidence of Adequate Sewage Disposal Section 10 Notice of Inquiry Section 11 Detention Design/Drainage Report J E o I Section 14 Electronic Copy Section 15 Application Fee Section 16 Investigation Fee in 3 4 v y Zg Appendix B Natural and Cultural Resources Report Appendix C Public Outreach Information Appendix D Stakeholder Outreach Information USR Questionnaire - Planning USR Questionnaire - Engineering USR Questionnaire - Environmental Health USR Questionnaire —Building 23-2.480 0.3/23-2490 C - T he design of the proposed PIPELINEmitigates WATER mitigates negative impacts on the surrounding area to the greatest extent feasible ✓ ✓ I 1./ ✓ ✓ I ✓ ✓ ✓ ✓ ✓ I ✓ ✓ / ✓ ✓ ✓ 23 7480 A.4/23-2.-490 D The site shall be maintained in such a manner so as to control soil erosion, dust and the growth of NOXIOUS WEEDS. ✓ ✓ ✓ ✓ I ✓ I ✓ I 23-2.480 A.5/23-2-490 E The applicant has agreed to implement any reasonable measures deemed necessary by the Board of County Commissioners to ensure that the health, safety and welfare of the inhabitants of the COUNTY will be protected, and to mitigate or minimize any potential adverse impacts from the proposed PIPELINE - DOMESTIC WATER. I ✓ I ✓ ✓ I 11/1 ✓ 1 ✓ ✓ ✓ ✓ ✓ TWP USR PA I SECTION D APPROVM STANUARDSAND REQUIREMENTS THORNTON WATER PROJECT WELD COLIN TY USR PERMIT APPLICATION 1 TABLE D.4 WCC Standards and Application Requirements Cross -Reference Guide Applicable WCC Standards and Application Requirements Volume 1 Volume 2 4 Y y CO 'a 0. cyr G • Z e = $ a " V p� E. •n E as Summery Statement USR Procedural Guide Checklist Appendices i 11 pL . r V] 1 2 S c Z E ` y{,( jr 5 V3 D. V .!S 2 �, Q Y o p '₹1 a 0 5 9 a a NQ O 1� • ��(( X iC i ax IA 3 19+ > t c Y a a O �! C O — \ N N Y Y e; '1 q V i. yy a �Yr - a. cc 4 a w N V c Y « o rey� V V a. 4 2 _� V 8 8 .o N Y U N f a E aUi -o 00 « r i : Y 6 4 N V a r us O c t N O w c O -6 ? 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Y o �+ i{ r3 a N 3D Z L� i Y ..V. c tti U Y o a ar •w+ c t W E ti( % t a a Y J I m i Y L c 2 Tii Y a N D 23-2-480 A.6/23-2-490 F - All reasonable alternatives to the proposal have been adequately assessed, and the proposed action is consistent with the best interests of the people of the COUNTY and represents a balanced use of resources In the affected area. ✓ ✓ ✓ ✓ V V 23 2-480 A //23-2-490 G The nature and location or expansion of the PIPELINE DOMESTIC WATER will not unreasonably interfere with any significant wildlife habitat and will not unreasonably affect any endangered wildlife species, unique natural resource, known historic landmark or archaeological site within the affected areaI ✓ / ✓ ✓ V ✓ f ✓ ✓ ✓ f W P USR PA 1 SECTION ()APPROVAL STANDARDS AND REQUIREMENTS 1;2 THORNTON WATER PROJECT WELDCOUNTY USR PERMIT APPLICATION 1 TABLE D.4 WCC Standards and Application Requirements Cross -Reference Guide Applicable WCC Standards and Application Requirements Volume 1 Volume 2 Volume 3 USR XX-)0O01 Permit Maps Introduction A -Applicant Name and Phone 1 mu Summary Statement USR Procedural Guide Checklist Appendices C.1- Description of Appurtenant Facilities/Structum 4 r. ti w C.2.b - Description of Preferred Route and Selection Criteria C.2.c Procedures for Mitigating Adverse Impacts C.2.d - Outline of Planned Construction Schedule C.2.e- Information on Public Meetings Cl.,- Description of HAZARDS C.2.g - Description of Emergency Procedures C.2.h Description of Procedures to Avoid Impacts to Irrigated Agricultural Land C.2.1- Conformance with Chapter 22 C.24 - Decommissioning Plan C.2.k — Traffic Narrative C.2.1- Description of Haul Routes C.2.m — Soils Report Attachment C.2.c-1- Floodplain information Attachment C.2.c-2 - Air Quality Information LAttachment C.2.c-3 - Drainage and Erosion Control Information Attachment C.Lc-4 - Geologic Hazards Information Attachment C.2.c-5 - Groundwater Information Attachment C.2.c-6 - Noise Information Attachment C.2.c-7 - Traffic Narrative Section 1 Pre -application Meeting Minutes E I. N Section 3 Authorization Form Section 4 Questionnaire Section S USR Map Section 6 Certificate of Conveyances Form Section 7 List of Property Owners Section 8 Evidence of Adequate Water Supply Section 9 Evidence of Adequate Sewage Disposal Section 10 Notice of Inquiry Section 11 Detention Design/Drainage Report Section 12 Traffic Study Section 13 Community Meeting Section 14 Electronic Copy Section 15 Application Fee Section 16 Investigation Fee Appendix A Alternatives Analysis Appendix 8 Natural and Cultural Resources Report Appendix C Public Outreach Information {c, .is USR Questionnaire - Planning USR Questionnaire - Engineering USR Questionnaire - Environmental Health USR Questionnaire — Building 23.2-480 A.8/23-2-490 H - No adverse impact, from stormwater runoff, to the public rights -of way and/or surrounding properties as a result of the PIPELINE • DOMESTIC WATER, ✓ ✓ V ✓ ✓ ✓ ✓ ✓ ✓ WCC Section 23-2-500 Application for use by ' special review permit. V WCC Section 23.2-510 Application Requirements 73.7-510 - The applicant's name and telephone number, V 23 2-510 • Address of the applicant and general OFFICE. V 23-2-510 - Suitt:nap/ statement of the project ✓ ✓ I V VIII ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ Is ✓ ✓ ✓ VI V ✓ WCC Section 23-2-520 - Drawing Requirements PIPELINE - DOMESTIC ' WATER maps. „ V T ✓ TWP USR PA -1 SECTION DAPPROVAI S:lNUA c;. SAND REQUIREMENTS References City of Thornton, City Development Department. (2018, July 31). Second Quarter 2018, Quarterly Housing & Population Report. Thornton, CO. Colorado Earthquake Hazards Mitigation Council. (2013). Colorado Earthquake Hazards. Denver, CO: Colorado Geological Survey, Department of Natural Resources. Colorado Geological Survey. Colorado Landslide Inventory Map Viewer. Retrieved from Colorado Geological Survey website: http://coloradogeologicalsurvey.org/geologic-hazards/landslides/maps/. Colorado Department of Transportation. Online Transportation Information System, Retrieved from Colorado Department of Transportation website: http://dtdapps.coloradodot.info/otis. Felsburg Holt & Ullevig. (2003 June). City of Dacono Transportation. Retrieved from city of Dacono website: https://www.cityofdacono.com/DocumentCenter/View/413/Transportation-Master-Plan- 2003?bidld=. Felsburg Holt & Ullevig. (2008 October). Weld/Adams County Line Crossroads Alignment Study, October 2008. Retrieved from Weld County website: https://www.weldgov.com/UserFiles/Servers/Server 6/File/Departments/Public%20Works/Transpo rtation%20Planning/Transportation%20Planning/7670A683b2Ca2B8bacDB.pdf. Topper, ft, Spray, K. L., Bellis, W.H., Hamilton, J. L., & Barkmann, P. E. (2003). Ground Water Atlas of Colorado. Special Publications, SP -53. Denver, CO: Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources. Town of Firestone. (2013). Firestone Master Plan. Retrieved from town of Firestone website: http://www.firestoneco.gov/DocumentCenter/View/45/2O13-Firestone-Master-Plan?bidld=. Town of Frederick. 2015 Comprehensive Plan. Retrieved from town of Frederick website: http://www.frederickco.gov/352/Comprehensive-Plan. Trait & Associates. (2014 November). City of Dacono Field Inventory, Regional Transportation and Drainage Impact Fee Analysis. Retrieved from city of Dacono website: https://www.cityofdacono.com/DocumentCenter/View/2374/Dacono-Regional-Transportation- Impact-Fee-Study-2O15. Turney, J.E., and Murray -Williams, L. (1983). Colorado Front Range Inactive Coal Mine Data and Subsidence Information, Weld County. Denver, CO: Colorado Geological Survey, Department of Natural Resources. Weld County, Weld County Public Works Department. (2011, May 9). Weld County 2035 Transportation Plan. Retrieved from Weld County website: https://www.weldgov.com/departments/public works/transportation planning/2035 transportati on plan/. Weld County. (2017, July 13). GIS Data, Road Functional Classifications & HUTF. Retrieved from Weld County website: www.weldgov.com/departments/geographic information systems/gis data/. Weld County. Weld County Code, Version May 29, 2018. Retrieved from Weld County website: https://library.municode.com/co/weld county/codes/charter and county code. Urban Drainage and Flood Control District. (2010, November). Urban Storm Drainage Criteria Manual (USDCM) Volume 3. Denver, CO. Leonard Rice Engineers, Inc. (2008, August). Best Management Practices (BMPs) for Utility Planning and Construction Through Rural, Wetland, and Riparian Lands. Denver, CO. IWP USR PA -1 REFERENCES R I Hello