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Home My WebLink About871720.tiff WARZYN -- Operations Report Eaton Landfill 50196 Weld Co., Colorado Prepared for: Mc Mill Inc. Greeley, Colorado Prepared by: Warzyn Engineering Inc. Greeley, Colorado August 1987 PL 01 14 8 PL0114 WARZYN -- Engineers 8 Scientists Environmental Services Waste Management Water Resources Site Development Special Structures Geotechnical Analysis August 6, 1987 50196.00 Mr. Steve Orzynski Colorado Department of Health Hazardous Material and Waste Management Division 4210 East 11th Avenue Denver, CO 80220 • • Re: Operations Report Eaton Landfill Weld County, Colorado Dear Mr. Orzynski : Enclosed are three copies of the operations report for Eaton Landfill . This report revises the May 1987 report based on discussions with you and the need for more detailed operating information. Please contact us if you have any further questions on this operations report. Respectfully submitted, WARZYN ENGINEERING INC. / Bruce E. Rome Project Engineer BER/sss/JAS/DWH [sss 600-44L] Triplicate Encl : Operations Report cc: McMill , Inc. (3) Thomas Hellerich (3) Wes Potter, Weld Co. Heatlh Dept (3) Warzyn Engineering Inc. One Science Court University Research Park P.O.Box 5385 Madison.Wisconsin 53705 16081 273-0440 WARZYN -- Operations Report Eaton Landfill 50196 Weld Co., Colorado Prepared for Mc Mill Inc. Greeley, Colorado Prepared by: Warzyn Engineering Inc. Greeley, Colorado Bruce E. Rome Project Engineer Douglas A. Wierman Project Hydrogeologist John A. Spooner Project Manager August 1987 Table of Contents INTRODUCTION 1-1 SECTION 1 - SITE OPERATION 1-1 A. Control Measures 1-1 1. Hours of Operation 1-1 2. Waste Type 1-1 3. Traffic Routing 1-1 4. Lines and Grades 1-2 5. Nuisance Factors 1-2 a. Odors 1-2 b. Dust 1-2 c. Site Appearance • 1-2 d. Noise 1-3 e. Litter and Windblown Debris 1-3 f. Disease Vectors 1-3 6. Police and Fire Protection 1-3 7. Recordkeeping 1-3 8. Surface Water Control 1-4 9. Regulatory Requirements 1-4 10. Adverse Weather Conditions 1-4 a. Wet Weather 1-4 b. Cold Weather 1-5 c. Windy Weather 1-5 d. Dry Weather 1-5 11. Personnel 1-5 12. Equipment 1-5 B. Refuse Filling Procedures 1-6 1. General 1-6 2. Placement and Compaction of Wastes 1-6 3. Coordination of Filling Sequence 1-7 4. Refuse Filling Sequence 1-7 D. Site Monitoring 1-7 E. Site Closure 1-7 F. Post-Closure Care 1-8 WARZYN Table of Contents (Cont.) SECTION 2 - COMPLIANCE WITH REGULATORY REQUIREMENTS 2-1 1. - Regulations Applicable To All Facilities, Existing or New 2-1 2.1 - Minimum Standards 2-1 2.2 - Operations Standards 2-1 2.3 - Inspections of Approved Sites and Facilities 2-1 2.4 - Closure of Approved Sites and Facilities 2-1 3.1 - Application Procedure 2-1 4.1 - Site Standards 2-2 _ 4.2 - Engineering Design Standards 2-2 4.3 - General Data 2-2 4.4 - Geologic Data 2-2 4.5 - Hydrologic Data 2-3 4.6 - Engineering Data . .. 2-3 4.7 - Operational Data 2-4 4.8 - Closure Data 2-5 5.1 - Issuance of the Certificate of Designation 2-6 6. - Waste Impoundments Regulations 2-6 7. - Application Review Fee 2-6 List of Drawings 50196-1 Base and Final Grades List of Appendices Appendix A - Regulations Pertaining to Solid Waste Disposal Sites and Facilities (Effective: October 30, 1985) Appendix B - Hydrogeologic Assessment (Report Prepared by Warzyn Engineering Inc.) Appendix C - Quarterly Groundwater Quality March 1986 to March 1987 Appendix D - Volume Calculations Appendix E - Surface Water Drainage Calculations [sss 600-44a] WARZYN OPERATIONS REPORT EATON LANDFILL WELD COUNTY, COLORADO INTRODUCTION This operations report presents details to assist the site operator in the operation and management of the Eaton Landfill , Weld County, Colorado. The report provides descriptions of site control measures, general refuse filling procedures, refuse filling sequence, site monitoring functions and compliance with regulatory requirements. Drawings are included which illustrate the site conditions, area of refuse filling and proposed final grade conditions. SECTION 1 - SITE OPERATION A. Control Measures 1. Hours of Operation The Eaton Landfill will be open only when the operators are on duty. The landfill will be open Monday through Friday excluding holidays from 8 a.m. to 5 p.m. and Saturday from 8 a.m. to 12 p.m. 2. Waste Type The landfill will accept non-hazardous solid waste such as refuse, noncombustibles, demolition debris, wood matter, brush and garbage. Incoming waste loads are checked in at the landfill office and directed to the disposal area. If unauthorized wastes are observed, the driver is instructed not to deposit them. If a question arises as to waste acceptability, consult the site manager. No hazardous wastes are acceptable at this site. 3. Traffic Routing The landfill manager and site operator are responsible for the routing of traffic. Use pylons, barricades and traffic signs to direct traffic to the disposal area. Where practical , relocate secondary access roads within the active refuse area over the in-place refuse to improve compaction. WA1191Pr August 1987 1-2 50196 4. Lines and Grades Maintain the horizontal and vertical control system as shown on the accompanying drawings. The site manager will provide intermediate lines and grades necessary to assist operations during project development and filling. 5. Nuisance Factors Control of nuisance factors depends on landfill maintenance throughout the site life. Various factors that affect nuisance-free operations are: odors, dust, site appearance, noise, litter, blown debris and disease vectors. The following describe measures to aid in control of these nuisance factors: a. Odors A properly operated sanitary landfill minimizes the presence of odors. Steps to aid in the control of odors include: 1. Covering the waste routinely; 2. Covering odorous wastes immediately after deposition; and 3. Eliminating surface water ponding. b. Dust Dust generation at the landfill and excavation borrow areas can occur from operations such as cover material excavation and placement, refuse compaction and vehicular traffic on access roads. Dust control will limit excessive wear of equipment and nuisance to people in the vicinity of the site and site personnel . Dust raised from vehicular movement can be controlled by wetting roads with water or commercially available compounds. c. Site Appearance Keep the landfill entrance in good repair, including clear visibility of the landfill entrance sign. Maintain vegetative cover along the entrance roads and on other areas outside the fill area that are undisturbed for periods of over one year. Overall site appearance is a public acceptance factor and can be strongly affected by the presence of windblown debris. For that reason, collect litter from the perimeter of the site, along the entrance road, from fences and within the landfill itself. WARZYN August 1987 1-3 50196 d. Noise Control noise from on-site equipment by equipment maintenance, particularly equipment mufflers. Maintaining the landfill operation within the excavation trench area will aid to deflect sound upward. e. Litter and Windblown Debris One of the most important aspects of periodic landfill maintenance is litter control . Minimize blowing debris by: 1. Maintaining a small working face; 2. Covering portion of the active area as they are filled; 3. Taking advantage of prevailing wind directions and orienting daily landfill operations accordingly; 4. Cleaning up litter on a routine basis; and 5. Positioning temporary fences around the working area to intercept blowing debris. f. Disease Vectors Control insects and rodents by placing cover to deny them food and harborage. Maintain drainage to eliminate mosquito breeding in ponded surface water areas. 6. Police and Fire Protection Police and fire protection and emergency care services currently available to the landfill are located in the Town of Ault Fire District. The source of water to be used on-site for fire protection is the irrigation reclaiming pond located at the edge of the landfill . Lone Tree Creek, located east of the landfill , is a possible source for water. Maintain fire extinguishers on all on-site vehicles and heavy equipment. No solid waste is burned at the landfill . Dump hot loads arriving at the landfill away from the active fill are and smother them with earth. 7. Recordkeepinq The system for maintaining records of incoming waste loads will consist of the office employee making tickets on every load received, which are recorded weekly according to categories 1, 2 and 3 for county and state reporting. Water quality is reported quarterly to the county health department. August 1987 1-4 50196 8. Surface Water Control The control of surface water is necessary to assist in providing all weather access around the site, to minimize infiltration, and to reduce potential erosion problems. Current surface water drainage is in a southeasterly direction across the site and easterly toward Lone Tree Creek, located east of the landfill , see Appendix E for surface water drainage calculations. Keep off-site surface water from entering the landfill by maintaining perimeter drainage swales. Route on-site surface water away from the active fill area. Maintain a good vegetative cover on all areas except those areas required for landfill operation or sand and gravel mining operations to prevent erosion. Inspect drainage swales and culverts for the deposition of sediment or other debris that would hinder the flow of water. Remove such material , if found. 9. Regulatory Requirements Comply with all governing Colorado Department of Health, local , county, state and federal regulations at the Eaton Landfill . Keep this operations report and any pertinent correspondence on-site for reference purposes. 10. Adverse Weather Conditions a. Wet Weather Keep properly maintained drainage swales and access roads to minimize operational disruptions due to periods of wet weather. Keep roads leading to the active area passable in all weather conditions. Should the access road become impassable, utilize a disposal area closer to the active area entrance for the duration of the wet weather. Reserve an area in each landfilling area for such operations. If no such areas are available, vehicles must reach the designated working face. Vehicular movement within the landfill during wet conditions can cause rutting and disruption of the cover layers. This promotes ponding and infiltration of surface water. As soon as weather permits, regrade all areas disturbed during wet weather. WARZYN August 1987 1-5 50196 b. Cold Weather The main difficulties during cold weather are maintaining site access and obtaining cover soils. Utilize a snow plow or dozer to clear onsite access roads, and protect cover materials during winter to prevent freezing. c. Windy Weather Take advantage of prevailing wind directions and orient landfill operations to minimize the effect of windy conditions. Keep the area of exposed waste to a minimum by partial placement of cover material during the course of that day. Keep the fence surrounding the landfill free of paper to prevent the wind from blowing debris over the fences. Refer to the section entitled "Litter and Windblown Debris" under "Nuisance Factors" for additional details. Temporarily cease refuse filling operations during periods of high winds warnings, when the winds sustain 40 mph or greater velocities or gusts of 55 mph or greater for one hour or longer. Wind velocity information is attainable from the local National Weather Service office (Denver Weather Service 639-1212) . d. Dry Weather Dry weather will generate the problems primarily associated with dust. Reference the section entitled "Dust" under "Nuisance Factors" for additional details. 11. Personnel The existing landfill employs one office worker and one landfill equipment operator. The equipment operators are key personnel at landfills, because they perform the actual compaction and covering operation. Inform the equipment operator of the objectives of this plan and the specific goals of the project. 12. Equipment There are three functions that are performed by the various pieces of equipment at a sanitary landfill operation, including: 1) handling waste, 2) providing and handling cover materials and 3) support functions. The landfill currently utilizes a D7 caterpillar which is used to spread and compact the WARZYN 'V August 1987 1-6 50196 waste and one John Deere Loader that is used to excavate and apply daily cover. Utilize existing on-site equipment to perform support functions. Some support functions include access road construction, snow removal , dust control and fire protection. B. Refuse Filling Procedures 1. General Refuse filling at the landfill is to occur in two locations as shown on the accompaning drawing (50196-1) . One location in the southern area is the current active filling area. The other location is in the northeast corner, east of the access road. 2. Placement and Compaction of Wastes There are three major elements in the operation of a sanitary landfill , including: 1. Proper placement of refuse; 2. Effective waste compaction; and 3. Placement of adequate cover. Control solid waste disposal so waste loads are placed in the proper locations. The operator at the site is responsible for the proper placement of all refuse, waste, bulk items, etc. No toxic and hazardous waste is acceptable at this site. Refuse densities in excess of 1,000 lb/cu yd are desirable for achieving good refuse placement and compaction effort. Spread solid waste evenly in shallow lifts and compact the refuse with three or four passes with the compaction equipment. Construct cells of refuse daily and cover with six inches of earth material at the end of each working day. Obtain cover soil from the adjacent excavation of subsequent refuse filling areas. Maintain a minimum slope over the top of the completed cells to promote surface water drainage. The size of the disposal cells are approximately 50 ft x 100 ft x 8 ft. WARZYN August 1987 1-7 50196 3. Coordination of Filling Sequence During filling operations, it is the responsibility of the site manager and equipment operator to monitor proper refuse placement, cover placement and daily cover use. The operator must also identify future construction activities such as the preparation of the adjacent refuse filling area. These items should be completed in a timely manner with consideration to completion of excavation. The operator should review the refuse filling sequence drawing and general development information as filling progresses. 4. Refuse Filling Sequence Drawing 50196-1 illustrates the areas for refuse filling and the current area of active filling. Refuse filling in the southern landfill area will progress to the south and east, filling the area to the final grade level . The sand and gravel operation will mine the soils concurrent with the refuse filling scheme in a southly and easterly direction. Refuse filling in. the northern section will progress from north to south, completing the area to final grade as filling progressess. D. Site Monitoring The monitoring of the Eaton Landfill will consist of monitoring of groundwater levels and quality at wells EMW-1, EMW-2, and EMW-3. This monitoring will be performed on a quarterly basis. Water quality testing of the water samples will include the parameters of nitrate-nitrate as N, pH, Total Hardness as CAC03, calcium as CAC03, magnesium, sodium, chloride, sulfate, total alkalinity, dissolved solids, potassium, iron, manganese and ammonia as N. Report water quality results quarterly to the Weld County Health Department. Monitoring for methane gas is currently not performed at this site. Due to the remote location and the existence of agricultural land surrounding the landfill , future monitoring is not proposed. E. Site Closure As final grades are obtained, place 1 foot thick intermediate cover over the refuse. In approximately one year, the remaining final cover will be placed. Placing cover one year after the subfinal grade is reached provides time to experience refuse settlement before final landfill grading. The final WARZYN ARZYN August 1987 1-8 50196 material will consist of the siltier sand and gravel from the site which is the surficial deposit of the unmined areas. This material is salvaged as new areas are developed for mining of the clean sand and gravel below. Place the remaining material required for the three foot final cover. The final cover will then be seeded and fertilized. The areas currently closed at the landfill have been seeded with alfalfa, which will also be used on the remaining landfill areas. Final closure of the site will included notifying the Colorado Health Department and Weld County Commissioners in writing at least sixty (60) days in advance of the site closure date. Provide notification to the public by posting signs 60 days in advance of the closure date at the site entrance. F. Post-Closure Care Following completion and closure of the landfill area, the site will be inspected semiannually for five years for areas of refuse settlement and lack of vegetation. Appropriate measures will be taken to correct these areas which would include regrading and revegetation of the landfill surface. Erosion to drainage swales and buildup of sediment will also be repaired. Groundwater quality monitoring will continue on a quarterly basis for two years following closure, then reduced to annual for the following three years. After the fifth year of post-closure care, an assessment will be made as to the necessary post-closure care activities. Decisions will be made as to maintaining site inspections and monitoring, reducing frequencies, or discontinuing long term care activities. Monitoring for methane gas will not be performed due to its remote location and the agricultural land use surrounding the landfill . A record will be maintained of the semiannual inspections. Site monitoring records will be maintained and sent to the Weld County Health Department. WARZYN SECTION 2 - COMPLIANCE WITH REGULATORY REQUIREMENTS The following discussion reviews the regulatory requirements pertaining to solid waste disposal sites and facilities. A copy of the regulations, effective October 30, 1985, are included in Appendix A. 1. - Regulations Applicable To All Facilities. Existing or New The items presented in Section 1 are general regulatory requirements for which no response or activity is required. The facility is in compliance with the items presented in this Section. 2.1 - Minimum Standards The facility will be in compliance with the standards required in subsections 2.1.1 through 2.1.8; see the previous Section 1 for descriptions of site operational tasks. 2.2 - Operations Standards The facility will be in compliance with the standards required in subsections 2.2.1 through 2.2.13; see the previous Section 1 for description of site operational tasks. 2.3 - Inspections of Approved Sites and Facilities The facility will conform to the requirements of subsections 2.3.1 through 2.3.4, as appropriate, to allow the Colorado Department of Health to inspect the site. 2.4 - Closure of Approved Sites and Facilities The facility will conform to the requirements of subsections 2.4.1 through 2.4.6, as appropriate; see discussion in Sections 1.E. & 1.F. 3.1 - Application Procedure Eaton Landfill is an existing facility and is operating under Certificate of Designation No. 17 (amended) . WARZYN August, 1987 2-2 12750.00 4.1 - Site Standards Eaton Landfill is an existing facility operating under Certificate of Designation No. 17 (amended) . 4.2 - Engineering Design Standards Eaton Landfill is an existing solid waste disposal site operating under Certificate of Designation No. 17 (amended). The facility will comply with subsections 4.2.1 through 4.2.7, as appropriate; see discussion in Section 1 - Site Operations. 4.3 - General Data 4.3.1 The mailing address for the facility is 20701 Weld County Road 78, Eaton, Colorado, 80615. The legal description of the site is the SE 1/4 Section 21, T7N, R65W, Weld County, Colorado. 4.3.2 The area of the site is approximately 32.7 acres, of which 10 acres remain unfilled. 4.3.3 The type of facility for solid waste disposal is trench filling in an excavated gravel pit. 4.3.4 The facility service area is HWY 392 north of Greeley to the Pierce - Nunn area (roughly 15 miles) , east to the Galeton area and west to the Severance area (roughly 15 miles) . The total service area of approximately 225 square miles includes the towns of Eaton, Ault, Pierce, Nunn, Lucerne, Galeton and Severance. Paved roads in the service area are WCR 39, 43, 74, and State Highway 14. Also, gravel road WCR 78 is in the service area. 4.4 - Geologic Data Information pertaining to subsections 4.4.1 through 4.4.4 are covered in the Hydrogeologic Assessment report prepared by Warzyn Engineering, Inc. (project no. C400005) for Colorado Landfill , Inc. This report is presented in Appendix B. August, 1987 2-3 12750.00 4.5 - Hydrologic Data Information pertinent to subsections 4.5.1 through 4.5.7 are presented in the Hydrogeologic Assessment report prepared by Warzyn Engineering Inc. and presented in Appendix B. Quarterly groundwater quality from March 1986 to March 1987 is presented in Appendix C. 4.6 - Engineering Data Calculations for the following subsections 4.6.1 through 4.6.4 are presented in Appendices D and E. 4.6.1 The daily cover material consists of the siltier sand and gravel deposits unsuitable for sale in the sand and gravel operation. These soils are the surficial deposits at the site and are availabe in the southern fill area remaining to be encountered and to the east and north of the landfill in areas of future sand and gravel mining. The quantity of daily cover needed for the life of the site is approximately 8500 yards. 77 4.6.2 Existing site operations do not require the placement of a liner. The type and quantity of material used for the final cover consists of the onsite silty sand and sandy silt deposits for which approximately 49,150 cubic yards are required to complete the site. This material is placed to a compaction density of 85-90% of standard Proctor at approximately 3-5% above optimum moisture content. This material is expected to have a permeability of approximately 10-5 cm/s and is available on-site or from adjacent areas scheduled for future sand and gravel mining. 4.6.3 Drawing 50196-1 has been prepared to show items A through J as appropriate. 4.6.4 The facility is an existing facility, therefore, no proposed details for monitoring points for surface water and groundwater quality and explosive gases are included. WARZYN August, 1987 2-4 12750.00 4.7 - Operational Data 4.7.1 The persons operating the site are Mc Mill Inc. , Paul E. McClure, President, Donald Miller, Secretary-Treasurer, and Alfred Miller, Landfill Manager. Qualifications: Paul E. McClure - Civilian Rank of Captain, 1942- Fort Carson Landfill Supervisor, 1966 Owner and Operator Eaton Landfill . 4.7.2 The hours of operation are 8:00 a.m. to 5:00 p.m. Monday through Friday and 8:00 a.m. to 12:00 p.m. Saturday. 4.7.3 The types of waste are non-hazardous solid wastes at a rate of 100 yards per day, with an estimated annual increase of 25 yards per day. No salvage or liquids are received. Based on the current filling rate, projected refuse filling rate increase and remaining air space, the site has an expected life of 4.5 years. 4.7.4 The personnel required to operate the facility consists of 2 employees, 1 office worker and 1 landfill equipment operator. 4.7.5 The equipment used at the site consists of a D7 caterpillar which is used to spread and compact the waste and 1 John Deere loader that is used to excavate and apply daily cover. 4.7.6 The system for maintaining records of incoming waste volumes consists of the office employee making tickets on every load received, which are recorded weekly according to categories 1, 2 and 3 for County and State reporting. Water quality is reported quarterly to the County Health Department. Explosive gas monitoring is currently not performed at the site. 4.7.7 The size of the disposal cells is approximately 50 ft by 100 ft by 8 ft, with a partial slope continuously covered with material from the adjacent soil trenching operation. 4.7.8 The refuse is compacted daily, if an adequate amount is received. It is covered when the compacted area is large enough to work on, usually 30 ft by 20 ft to 30 ft by 30 ft. Regardless of the amount received, the refuse is covered at least weekly. WAVir August, 1987 2-5 12750.00 4.7.9 The site is surrounded by 6 ft high fine mesh fencing. The fencing on the east and south sides is double to triple fences. 4.7.10 Control to minimize nuisance conditions consist of maintaining the area of active disposal and daily policing of on-site fences and off site areas for blown debris. 4.7.11 No open burning is permitted at this site. If a fire at the site occurs, the site is in the Town of Ault Fire Protection district. 4.7.12 The site and surrounding off site areas are policed daily for retrieval of windblown solid waste. 4.7.13 The conceptual plan to be implemented, if contamination of surface waters or ground waters occur is revealed in water quality testing, will consist of notifying the County and State Health Departments immediately. Specific actions will be to first recheck the water quality test for error in reducing data or transposing data. If this information appears correct, the water quality tests will be rerun on new samples for the area identified for comparison to the original test results. If test results confirm the earlier indications, additional site investigation for the cause of the contamination will be performed to assess a method for implementing appropriate environmental improvement activities. Other nuisance conditions beyond the site boundary will be corrected when they are encountered. 4.7.14 The source of water to be used on site for fire protection is the Ault Fire District Irrigation reclaiming pond located at the edge of the landfill . Lone Tree Creek, located east of the landfill , is a possible source for water to control nuisance conditions or to be used during construction activities. Bottled water is available in the office for personnel use. 4.8 - Closure Data 4.8.1 Provisions for the maintenance of the facility after closure include semi-annual review of the landfill for five years to identify areas of refuse settlement and lack of vegetation. Appropriate measures to correct these areas will be taken, which include regrading and revegetation of the areas. WARZYN August, 1987 2-6 12750.00 4.8.2 Provisions for monitoring of groundwater and surface water quality after closure will be performed at the on-site wells on a quarterly basis for two years and then annually for the following three years. Monitoring of explosive gases will not be performed due to the remote location and presents of agricultural land use surrounding the site. 4.8.3 Plans for final closure of the facility consist of filling the area continually to 3 ft below final grade. Final cover is placed 1 year after the subfinal grade has had time to experience refuse settlement. The landfill area has been filled to maintain a 0.4% to 1.0% grade, sloping to the south- southeast similar to the original ground surface contours. 5.1 - Issuance of the Certificate of Designation The facility is an existing solid waste disposal facility with Certificate of Designation No. 17 (amended) . 6. - Waste Impoundments Regulations The facility is a waste disposal site and the regulations under this section are not applicable. 7. - Application Review Fee The site operators will comply with the Department charges for review of this engineering design and operations report with payment through the Colorado Department of Health. Review fee charges will be based on a Class A site. BER/sss/JAS/DWH [sss-600-44] APPENDIX A REGULATIONS PERTAINING TO SOLID WASTE DISPOSAL SITES AND FACILITIES (EFFECTIVE: OCTOBER 30, 1985) • REGULATIONS PERTAINING TO SOLID WASTE DISPOSAL SITES AND FACILITIES EFFECTIVE DATE: October 30, 1985 Table of Contents Section 1 — Applicable to all facilities , existing or new: 1.1 Authority • 1.2 Definitions 1.3 Scope 1.4 Exemptions Section 2 — Applicable to all facilities, existing or new: 2.1 Minimum Standards 2.2 Operations Standards 2.3 Inspections • 2.4 Closure Standards Section 3 — Applicable to all new facilities: 3.1 Application Procedure Section 4 — Applicable to all new facilities: 4.1 Site Standards 4.2 Engineering Design Standards 4. 3 General Data 4.4 Geologic Data • 4.5 Hydrologic Data 4.6 Engineering Data 4.7 Operational Data 4.8 Closure Data Section 5 — Applicable to all new facilities: 5.1 Issuance of Certificate of Designation Section 6 — Applicable to all Waste Impoundments, existing or new: 6.0 Regulated Facilities 6.1 Impoundment Classification 6.2 Class Design Standards 6.3 Liner Data 6.4 General Design Standards 6.5 Liner Installation 6.6 Operation Standards 6.7 Monitoring 6.8 Recordkeeping and Calculations 6.9 Closure Section 7 — Application Review Fee 7.1 Authorization 7.2 Classification 7.3 Payments ,/, . - 2 I • I , Regulations Solid Wastes Disposal Sites and Facilities 1.1 - Authority These regulations are promulgated pursuant to the Solid Wastes Disposal Sites and Facilities Act , Title 30-20-Part 1, C.R.S. 1973, as amended. These regulations replace and supersede the Solid Wastes Disposal Sites and — Facilities regulations adopted February 16, 1972; effective April 1, 1972. 1.2 - Definitions - as used in these regulations, unless the context otherwise requires: a. "Act" means the Solid Wastes Disposal Sites and Facilities Act, Title 30-20-Part 1, C.R.S. 1973, as amended. • - b. "Adequate cover" means: - 1. at least six inches of soil or other suitable material over the working face at the end of each operating day , or at such frequencies as to prevent or minimize the creation of nuisance conditions , and 2. at.;,least one foot of soil or other suitable.material over _ - disposed-solid wastes-in-areas left temporarily unused for at "least one month, but not finally closed; and 3. at least two feet of soil over the entire fill surface at final closure. c. "Agricultural wastes" means all solid wastes resulting from the _ raising of crops or animals , including animal manures, that are returned to the soils as fertilizer or soil conditioners, on land zoned agricultural by local requirements. d. "Airport" means an airport open to the public without prior permission and without restriction, within the physical capabilities of the facility. e. "Air pollution" means any concentration of one or more air pollutants in the ambient air that has caused , is causing, or if unabated may cause iniury to human, plant or animal life, or injury to property, 4 or which unreasonably interferes with the comfortable enjoyment of 1L / life or property. f . "Amended Application" - means a document which proposes modifications to an existing site or facility that constitutes a substantial change in operations. • g. "Approved site or facility" means a site or facility for which a iicertificate of designation has been obtained , pursuant to the Act . It ' • - 3 - h. "Aquifer" means any geologic formation, group of formations or portion of a formation capable of yielding significant and useable quantities of groundwater to wells and springs. i. "Base flood" means a flood that has a one percent chance of recurring in any year, or a flood of a magnitude equalled or exceeded once in 100 years, on the average over a significantly long period. j. "Bird Hazard" means an increase in the likelihood of bird/aircraft collisions that may cause damage to the aircraft or injuries to its occupants. k. "Certificate of designation" means a document issued by the County Board of Commissioners , upon favorable recommendation of the Department, to a person authorizing their operation of a facility for solid waste disposal, pursant to the Act . 1. "Certificate of designation application" means a document containing all local requirements and an engineering design and operations report prepared in accordance with Section 3. 1 through 4.8 of these Department regulations , that: 1. establishes the site , design, construction, and operational suitability of a proposed type of solid waste disposal , and 2. demonstrates that the implementation of proposed designs will result in complianae with the Act , these regulations, and all other applicable Department regulations during construction, operations, and post closure. m. "Commercial wastes" means all solid wastes generated by stores, hotels, markets, offices , restaurants , and other nonmanufacturing activities, excluding community and industrial wastes. n. "Community wastes" means all solid wastes generated by the noncommercial and nonindustrial activities of private individuals of a community, including solid wastes from streets , sidewalks and alleys. o. "Department" means the Colorado Department of Health. p. "Disease vector" means any animal , bacterium or virus capable of transmitting disease, illness or harm to humans. q. "Explosive gas" means methane or other combustible gases , generated by decomposition in a facility for solid wastes disposal. - 4 - r. "Facility structures" means any building, structure , or utility services trenches, temporary or permanent, at a facility for solid wastes disposal. _ s. "Floodplain" means lowland areas adjacent to inland surface waters that are inundated by the base flood . t. "Groundwater" means any water below the land surface in a zone of saturation. u. "Hazardous waste" means any material, alone or mixed with other materials , which has no commercial use or value, or which is discarded or is to be discarded by the possessor thereof, either of which because of its quantity, concentration, or, physical , chemical , — or infectious characteristics may cause or significantly contribute to an increase in motrality or an increase in serious irreversible or incapacitating reversible illness; or pose a substantial present or potential hazard to human health or to the environment when improperly treated, stored, transported, disposed of, or otherwise managed. The term does not include : (i) discharges which are point souces subject to permits under section 402 of the "Federal Water Pollution Control Act" , as amended; (ii) source , special nuclear, or byproduct material as defined by the Federal "Atomic Engergy Act of 1954", as amended; (iii) agricultural waste from the raising of crops or animals, including animal manures, which are returned to the soils as fertilizers or soil' conditioners; (iv) domestic sewage; (v) irrigation return flows; (vi) inert materials deposited for construction for fill or topsoil placement in connection with acutal or contemplated construction at such location or for changes in land contour for agricultural and mining purposes; or (vii) any waste or other materials exempted or otherwise not regulated as a hazardous waste under the federal act . v. "Health Departments" means the Colorado Department of Health and a local Health Department if such entity exists. w. "High wind warning" means that sustained winds of 40 mph or greater, or gust of 55 mph or greater, are expected to persist for one hour or longer, as defined by the National Weather Service. x. "Incineration" means the combustion of solid wastes in such a way as to: 1. control the air mixture to maintain adequate temperature for efficient combustion, and - 5 - 2. contain the combustion reaction in an enclosed device to provide sufficient residence time and mixing for complete combustion, and 3. control the emission of combustion byproducts consistent with the standards , rules and regulations promulgated by the Department's Air Quality Control Commission. Y. "Incompatible wastes" means wastes which, when mixed, produce heat, pressure, fire , explosion, violent reaction, toxic mist , fumes or gases, or flammable fumes or gases. z. Incorporated into the soil" means the insertion of solid waste beneath the surface of soil or the mixing of solid wastes with the surface soil. aa. "Industrial wastes" means all solid wastes, including mill tailings and mining wastes , resulting from the manufacture of products or goods by mechanical or chemical processes. bb. "Inert material" means nonwatersoluble and nonputrescible solids together with such minor amounts and types of other materials as will not significantly affect the inert nature of such solids according to the rules and regulations of the board. The term includes , but is not limited to, earth, sand , gravel rock, concrete which has been in a hardened state for at least sixty days , masonry, asphalt paving fragments , and other inert solids including those the Board of Health may identify by regulation. cc. "Leachate" means liquid that has passed through and emerged from solid wastes, containing soluble, miscible , or suspended constituents removed from the wastes. dd. "Liner" means a continuous layer of natural or man—made materials beneath and on the sides of a waste impoundment which restricts or prevents the downward or lateral escape of solid waste, its constituents , or leachate. ee. "Local requirements" means all laws, resolutions or ordinances related to solid waste disposal promulgated by counties , municipalities, or other political subdivisions of the State. ff. "Mill tailings" means an industrial solid waste generated by the mechancial or chemical processing of minerals for subsequent conversion into useable forms as a metal , a metallic compound , an energy source , or raw material for manufacture. — 6 — gg. "Minimal quantities of hazardous wastes" means a quantity of less than 1,000 kilograms (2, 200 pounds) of hazardous waste containing no acutely hazardous waste as defined by 40 Code of Federal Regulations , Subpart 261.5(e) which is produced only by small quantity generators as defined by 40 Code of Federal Regulations, Subpart 261 .5(a) and which is received by a solid waste facility for processing or disposal in any calendar month. hh. "Mining waste" means overburden to be discarded and other industrial wastes directly related to the preparation, development and operation of mineral extraction facilities. ii. "Noise pollution" means sound levels radiating from the site boundary at a distance of twenty—five feet or more therefrom, in excess of standards established in Sections 101 and 103 of. the Colorado Noise Abatement Act, Title 25-12—Part 1, C. R.S. 1973, as amended. jj. "Noncommercial burning of trash" means the combustion of solid wastes in accordance with Subsections (2) and (3) Section 110 of the Act. kk. "Nuisance conditions" are those which may result from explosive gas , bird hazards, disease vectors, odors, windblown solid wastes or cover materials , open burning , water pollution, air pollution, noise pollution and traffic congestion. 11. "Open burning" means the uncontrolled or unconfined combustion of solid wastes at a facility for solid waste disposal. mm. "Person" means an individual, partnership, private or municipal corporation, firm, or other association of persons. nn. "Processing" means performing a type of solid waste disposal, including but not limited to sanitary landfilling, incineration, and composting. oo. "Putrescible wastes" means those solid wastes that contain organic matter capable of being decomposed by microorganisms, and of such a _ character and proportion as to be capable of attracting or providing food for birds or disease vectors. pp. "Recyclable materials" means a type of material that is subject to reuse or recycling. qq. "Recycling operation" means that part of a solid wastes disposal facility, or a part of a general disposal facility at which recyclable materials may be separated from other materials for further processing. - 7 - rr. "Residual sludge" means solids , semi-solids or liquids remaining in a waste impoundment after final evaporative or other treatment or storage of the waste is completed , or which may be dredged out during the active life. ss. "Significant" means in the context of differentiating between liquid or semisold waste streams , a difference of one order of magnitude in the concentration of any constituent. uu. "Site boundary" means the outermost perimeter of a facility for solid wastes disposal in plan, as designated pursuant to the Act. vv. "Site" means a location for a facility for solid waste disposal, chosen based upon reasonably available geologic, hydrologic and operational data considerations. ww. "Sludge" means any solid or semi-solid waste generated by municipal, commercial, or industrial wastewater treatment plant , water supply treatment plant, or air pollution control facility, that has been treated to obtain pathogen destruction, odor control, or putrescibility control. xx. "Solid waste" means any garbage , refuse, sludge from a waste treatment plant , water supply treatment plant , or Air pollution Control Facility, and other discarded material, including solid, liquid , semisolid, or contained gaseous material resulting from industrial or commercial operations or from community activities. "Solid Waste" does not include any solid or dissolved materials in domestic sewage, or agricultural wastes , or solid or dissolved materials in irrigation return flows , or industrial discharges which are point sources subject to permits under the provisions of the "Colorado Water Quality Control Act", Article 8 of Title 25, C.R.S. 1973, or materials handled at facilities licensed pursuant to the provisions on Radiation Control in Article 11 of Title 25, C.R.S. 1973. yy. "Solid wastes disposal" means the collection, storage, treatment, utilization, processing , or final disposal of solid wastes. zz. "Solid wastes disposal sites and facility" means the location and/or facility at which the deposit and final treatment of solid wastes occur. — s — aaa. "Substantial change in operations" means any redesign or planned construction which would significantly change the planned design — performance of a facility for solid waste disposal as originally designated, the addition of a category of wastes or other waste handling processes that have not been previously reviewed and accepted as complying with these regulations, or the selling or transferring of the certificate of designation to a new operator. bbb. "Surface water" means water that flows on the land surface, or is tributary to such water. ccc. "Transfer station" means a facility at which refuse awaiting transportion to disposal site is transferred from one type of collection vehicle to another. . ddd. "Treatment" means performing a type of solid waste disposal, including but not limited to shredding, baling, liquid evaporation, and nonbeneficial sludge landspreading. eee. "Underground source of drinking water" means an aquifer or its portion: A. which supplies any public water system, or which contains a sufficient quantity of groundwater to supply a public water system, and B. currently supplies drinking water for human consumption, or contains fewer than 10,000 mg/1 total dissolved solids. fff. "Waste impoundment" means any pit , pond, lagoon, trench or basin used for storage , treatment or disposal of solid waste. ggg. Waste stream" means a relativey uniform solid waste, produced by the same or a similar process or generator over time. Different waste streams are distinguished by significantly larger or smaller concentrations of one or more constituents as determined by standard test methods or inspection. hhh. "Water pollution" means the manmade or man-induced alternation of the background physical , chemical , biological or radiological integrity of groundwater or surface water. iii. "Working face" means that portion of a facility for solid wastes disposal where solid wastes are actively unloaded, placed, compacted and covered , at any time of operation. jjj. "Yards per day" means the cubic yardage of material a facility receives at the gate, for each 24 hour period . II 1 - 9 - 1. 3 Scope 1.3.1 No person shall operate a facility for solid waste disposal, where processing, treatment , or final disposal is performed, at a site located in the unincorporated portion of any county without a certificate of designation obtained from the Commissioners of the county. 1. 3.2 Sites for new sanitary landfills shall comply with standards of Sections 4.1 and 4. 2 unless compliance with the standards is waived by the Department in accordance with Section 1.3.8 of these regulations. 1.3.3 The construction, operation and closure of all new facilities for solid waste disposal shall comply with designs, specifications and procedures outlined in the certificate of designation application, as amended by Department review and local requirements; and with the standards in Sections 2. 1 through 2.4 and 3.1 through 4.8 of these Department regulations . 1.3.4 The construction, operation and closure of all approved facilties for solid waste disposal that were granted a certificate of designation before there were requirements for an engineering design and operations report , or that are in operation on the effective date of these Department regulations, shall comply with standards in Section 2.1 through 2.4 of these Department regulations. 1.3.5 Approved facilities for solid wastes disposal that are exempted from certificate of designation requirements under provisions of Section 1.4 of these Department regulations shall comply with standards in Section 2.1 through 2.4 of these regulations , unless permitted or operated in compliance with regulations pursuant to the Colorado Mined Land Reclamation Act, Title 34-32, 101 et seq. CRS 1973 as amended: or the Hazardous Waste Act, Title 25-15 Parts 1, 2, and 3, CRS 1973 as amended . 1.3.6 Technical guidelines , including specific technical factors, may be developed and issued by the Department to assist applicants , local governments, and the public. 1. 3.7 An amended application shall be made for a substantial change in operations as defined in Section 1.2 of these regulations, and shall be referred to the County Board of Commissioners and the Department for review and approval before such change shall become effective . - 10 - 1.3.8 In its consideration of an application, and in the exercise of its regulatory authority to assure compliance with these regulations, the Department may waive compliance with any standard in Section 2. 2, 2. 4, 4. 1, 4. 2 and section 6 provided that: A. The benefits derived from meeting a standard do not bear a reasonable relationship to the economic environmental , and energy impacts or other factors which are particular to the facility, or B. 1. Such waiver is consistent with the purposes of the Act and these regulations , and 2. Such waiver is not deemed to, constitute a material variation from the requirements of these regulations, and 3. The waiver will not cause or allow the violation of any air or water quality standard . 1 .3.9 A concise general statement of the Basis and Purpose for these regulations has been prepared and adopted by the Board of Health, and hereby incorporated into these Department regulations by reference , pursuant to the Colorado Administrative Procedures Act, Title 24-4.103, CRS 1973 as amended. _ 1.4 Exemptions: Notwithstanding the provisions in any subsection in Section 1.3 of these regulations , the following facilities for solid wastes disposal shall be approved sites and/or facilities for which obtaining a certificate of designation under provisions of Section 105 of the Act shall be unnecessary: 1.4.1 Those facilities at which any person, other than a governmental unit , disposes of his own solid wastes on his own property; provided that the Department has determined, based upon review of an engineering design and operations report prepared and submitted by the operator in accordance with Sections 2.1 , 2. 2, 4.1, and 4.2 of these regulations , that the disposal operation will comply with the Act and the applicable regulations of the Department . 1 .4. 2 Those facilities for solid waste disposal at which any person engaged in mining operations permitted by the Colorado Mined Land Reclamation Board, pursuant to the Colorado Mined Land Reclamation Act , Title 34-32, 101 et . seq. CRS 1973 as amended , and its regulations, performs solid waste disposal of mining or other solid wastes generated by such operations within the permitted area for such operations. - 11 - 1.4.3 Those solid wastes disposal sites and/or facilities, including processing facilities , operated to reclaim or recylcle metallic , glass, or cloth solid wastes, unless operated on the site or landfill or incinerator operation. 1.4. 4 Those sites where sludge is used beneficially as a fertilizer, soil conditioner, fuel or livestock feed , provided the sludge is certified to have met all applicable regulations of the Department and the Department of Agriculture. 1.4.5 Those facilities for hazardous waste disposal that have been issued a certificate of designation pursuant to Title 25-15 Parts 1, 2, and 3, C.R.S. 1973 as amended, and its regulations. 2.1 Minimum Standards. All facilities for solid waste disposal shall comply with the following minimum standards of the Act: • 2.1.1 Such sites and facilities shall be located, operated , and 17 i maintained in a manner so as to control obnoxious odors and ,)1! , prevent rodent and insect breeding and infestation, and they shall be kept adequately covered during their use. 2.1.2 Such sites and facilities shall comply with the health laws , ^ t;; standards , rules, and regulations, of the Department, the Slater Quality Control Commission, the Air Quality Control Commission, and all applicable.zoning laws and ordinances. _ 2.1.3 No radioactive materials or materials contaminted by radioactive substances shall be disposed of in sites or facilities not ' specifically designated for that purpose . 2.1.4 A site and facility operated as a sanitary landfill shall provide means of finally disposing of solid wastes on land in a manner to minimize nuisance conditions such as odors, windblown - debris, insects , rodents , and smoke; shall provide compacted �<< to' fill material; shall provide ad quote cover with suitable t 16 \ material and s_,irfacdrainage desi e_d to prevent ponding of J `a!`water and wind erosion and prevent and air pollution; and, r)' ;e` ,.,l upon being filled , shall be left in a condition of orderliness ,'' %' Z and good esthetic appearance and capable of blending with the _,1 ' ) 2, surrgan,ding area. In the operation of such a site and facility, '1 a ')'‘'' .)` the solid wastes shall be distributed in the smallest area V consistent with handling traffic to be unloaded; shall be placed '1 in the most dense volume practicable using moisture and --- compaction or other method approved by the Department; shall be fire, insect, and rodent resistant through the application of an ii . adequate layer or inert material at regular intervals; and shall have a minimum of-windblown debris which shall be collected regularly and placed into the fill . - 12 - r��N` ." g2.1.5 Sites and facilities shall be adequately fenced so as to prevent N 1p j waste material and debris from escaping therefrom, and material and debris shall not be allowed to accumulate along the fence / line. Vti' 1 - ) 2.1.6 Solid wastes deposited at any site/or facility shall not be burned, other than by incineration in accordance with a l9 certificate of designation issued pursuant to section 30-20-105; Outf' ) except that , in extreme emergencies resulting in the generation of large quantities of combustible materials, authoriztion for 1 � ✓ burning under controlled conditions may be given by the Department. 2.1.7 Any provision of the Air Pollution Control Act, Title 25-7-108, C.R.S. 1973 as amended, to the contrary notwithstanding, the Board of County Commissioners in any county with less than twenty-five thousand population, according to the latest federal census , is authorized to develop regulations, by resolution, permitting the noncommercial burning of trash in the unincorporated area of said county; except that no permit shall be issued which shall allow the county to exceed primary and secondary ambient air quality standards as prescribed by federal laws and regulations adopted pursuant thereto. 2. 1.8 As used in subsection 1.5.7 of this section, "noncommercial t..k- r burning of trash" includes the burning of wood waste in wigwam wood waste burners. 2.2 Operations Standards: All facilities for solid waste disposal shall be operated in accordance with the following standards , where applicable, unless said standards are waived in accordance with Section 1.3.8 of these Department regulations: 2. 2.1 Facilities for solid waste disposal shall be kept adequately rP fenced to prevent unauthorized public access without operator supervision. f7U% 1,.. 2. 2. 2 Surface waters shall be diverted from, or around, the disposal site and facility and its working face. '1 2. 2. 3 Groundwater quality shall be monitored upgradient and ,ln• downgradient of facilities for solid waste disposal where final 'disposal or liquid evaporative treatment is performed. 2.2.4 All groundwater and explosive gas monitoring points shall be installed in accordance with applicable rules and regulations of the Water Well and Pump Installation Contractor's Act , Title 37-91 Part 1, CRS• 1973 as amended, and the water quality and gas concentrations of samples taken from the wells shall be determined by the facility operator. 2. 2.5 - Groundwater quality and explosive gas concentrations shall be monitored regularly, as deemed necessary by the Department and the operator on a site specific basis. - 13 - 2. 2.6 The concentration of explosive gases generated by the facility for solid waste disposal shall not exceed: 1) One percent by volume in air within facility structures (excluding gas control or recovery systems), or 2) Five percent by volume in air at the site boundary, unless geologic or other conditions are such that no explosive gas hazard exists beyond the site boundary. 2. 2.7 Disposal sites and/or facilities that accept putrescible wastes - that may attract birds , and which occur within 10,000 feet (3048 meters) of any airport runway used by turbojet, or within 5,000 feet (1 ,523 meters) of any airport runway used only by , piston-type aircraft shall not pose a bird hazard to aircarft . 2. 2.8 Facilities for solid wastes disposal where final disposal is performed shall cease operations during periods when high wind warnings as defined in Section 1.2 are verified on-site. If the facility has no wind velocity measuring device, closure decisions shall be based on readings obtained hourly by the facility operator from the nearest National Weather Service Office or other location approved by the Department. 2. 2.9 No facilities for solid wastes disposal shall knowingly receive any waste classified as acutely hazardous , per 40 Code of Federal Regulations 261.33. 2. 2.10 No facility for solid waste disposal shall knowingly receive any quantity of hazardous waste defined in Section 1.2 of these Department Regulations in any calendar month, unless authorized by the Department, the County Board of Commissioners, and the facility operator. 2. 2.11 No sanitary landfills shall accept raw sludges from wastewater treatment plants , septic tank pumpings , or chemical toilet wastes, without approval from the County Board of Commissioners and the Department . 2. 2.12 Sludges shall not be codisposed with other solid wastes at the working face of sanitary landfills without approval from the County Board of Commissioners and the Department." 2. 2.13 All operating records shall be made available to the County Board of Commissioners and the Department upon their request. 2.3 Inspections of Annroved Sites and Facilities 2. 3.1 Approved facilities for solid wastes disposal may be inspected by the Department to evaluate their compliance with the Act , these Department regulations, and the certificate of designation appplication as amended by the Department. No prior notification of said inspection shall be required. - 14 - L 2.3. 2 Approved facilities for solid waste disposal which were (1) granted a certificate of designation before there was a requirement for an engineering design and operations report with a certificate of designation application, or (2) which are exempt from certificate of designation requirements under Section 1.4 of these regulations, may be inspected to evaluate compliance with the Act and these regulations , if no other Colorado Law and regulations apply, in accordance with Section 1. 3.5 of these Department regulations. No prior notification of said inspection shall be required. 2.3.3 If an approved facility for solid wastes disposal is determined by inspection to be noncompliant with the Act, these Department ILL regulations , or the certificate of designation application, as amended, the facility operator and the County Board of Commissioners shall be notified of the violation by certified mail sent by the Department. 2.3.4 If the facility operator fails to respond to the Department violation notice within thirty days , said operator may become subject to statutory and other remedies as appropriate including: 1) Fines, imprisonment , or both, under Section 114 of the Act, IL 2) Temporary suspension or revocation of the certificate of designation, under Section 112, o.f the Act, or 3) If a facility is deemed a public nuisance for violation of the Act or these Department regulations, the violation may be enjoined by a District Court under Section 113 of the Act . 2.4 Closure of Approved Sites and Facilities 2.4.1 No person shall close an approved facility for solid wastes disposal without notifying the Department and the County Commissioners in writing at least sixty days in advance of the closure date. 2. 4. 2 The operator of an approved facility for solid wastes disposal shall notify the general public at least sixty days in advance of the proposed closure date by placing signs of suitable size at the entrance to the site and facility. 2.4. 3 Approved facilities for solid wastes disposal shall be closed in accordance with the Act , these Department regulations , and in the manner specified in the certificate of designation application as amended. Precautions shall be taken to prevent further use of the site and facility for unauthorized disposal. - 15 - 2. 4.4 The concentration of explosive gas generated by the facility for solid waste disposal shall not exceed five percent in the air at the site boundary after closure. 2.4.5 Water pollution shall not occur at or beyond the site boundary after closure. 2. 4.6 Nuisance conditions shall not exist at or beyond the site boundary after closure. 3.1 Application for a certificate of designation for new facilities for solid waste disposal 3. 1.1 Any person proposing to operate a facility for solid wastes disposal within the unincorporated portion of any county shall apply to the Commissioners of the County in which the site is to be located for a certificate of designation. 3.1.2 The application shall include a nonrefundable three hundred dollar fee and at least five copies or as many additional copies as specified by local requirements , of an engineering design and operations report prepared in accordance with Sections 3.1 through 4.8. The application shall also include all other documents specified by local requirements . 3.1.3 After receipt of an application, the Commissioners shall forward copies of the application and at least four copies of the engineering design and operations report to the Department for review and a recommendation for approval or disapproval. 3.1.4 Recommendations on certificate of designation applications, including the engineering design and operations report , shall be based upon compliance with the Act and these Department regulations. 4.1 Site Standards: All new facilities for solid waste disposal shall comply with the following standards , unless said standards are waived in accordance with Section 1.3.8 of these Department Regulations: 4.1.1 The topography of the site shall maximize protection against prevailing winds on—site and minimize the amount of precipitation catchment area upgradient of the site . 4. 1.2 Facilities for solid waste disposal shall not be located in floodplains • 4. 1.3 No significant aquifer recharge areas , as may be designated by the Colorado State Engineer's Office or the Department 's Water Quality Control Commission, shall be adversely impacted by solid waste disposal . - 16 - 4.1.4 Facilities for solid waste disposal shall be sited no closer to domestic wells or springs shown to tap the uppermost aquifer downgradient of the site , than that distance groundwater beneath the site would flow during the facilities ' operating life , unless adequate groundwater protection is provided. 4.1.5 Facilities for sold waste disposal shall isolate wastes from the public and environment by emphasizing favorable geologic conditions over engineered improvements of marginal geologic conditions. 4.1.6 Facilities for solid waste disposal shall not place wastes below or into surface water or groundwater that has a potential or existing beneficial use or that is in direct communication with surface water or an aquifer. 4. 2 Engineering Design Standards: The engineering designs of all facilities for solid waste disposal shall comply with the following standards , unless said standards are waived in accordance with Section 1.3.8 of these Department regulations: 4. 2.1 Groundwater shall be protected from water pollution by leachate from the facility for solid waste disposal. 4. 2. 2 Permanent surface water diversion structures remaining after closure shall control runon and runoff from the 100 year event . 4.2. 3 Geologic hazards, or conditions including but not limited to slope stability, faulting , folding , rockfall, subsidence or erosion potential, shall not prevent the disposal site and/or facility from complying with the Act and these Department regulations. 4. 2.4 Groundwater monitoring wells are designed in accordance with applicable rules and regulations pursuant to the Water Well and Pump Installation Contractor's Act , Title 37-91—Part 1, C.R.S. 1973 as amended. 4. 2.6 Demonstrate that two feet of final cover is sufficient for the establishment of vegetative protection against erosion, and is able to maintain the waste's isolation after closure. 4. 2.7 Adequate amounts of water are available for construction purposes and to minimize nuisance conditions, as necessary. 4.3 The engineering design and operations report shall include , as a minimum, the following general data: 4. 3.1 Mailing address, county and legal description of the facility for solid wastes disposal , township, section and range; - 17 - 4. 3. 2 Area site , in acres; 4. 3.3 Type of facility for solid waste disposal proposed for the site; 4.3.4 Discussion of facilitiy's service area, including transporation corridors and surrounding access. 4.4 The engineering design and operations report shall include, as a minimum, th following geologic data: 4. 4.1 Types and regional thickness of unconsolidated soils materials; 4.4.2 Types and regional thickness of consolidated bedrock materials; 4.4.3 Regional and local geologic structure, including bedrock strike and dip, and fracture patterns; 4. 4.4. Geologic hazards , including but not limited to slope stability, faulting, folding, rockfall, landslides, subsidence or erosion potential, that may affect the design and operation of the facility for solid wastes disposal. 4.5 The engineering design and operations report shall include, as a minimum, the following hydrological data: 4.5.1 Lakes, rivers, streams, springs , or bogs , on site or within two miles of the site boundary; 4.5.2 Depth to and thickness of uppermost aquifers; 4.5.3 Domestic wells within one mile of the site boundary, including well depth, depth to water, screened intervals, yields and the aquifers tapped; 4.5.4 Hydrologic properties of the uppermost aquifer, including flow directions , flow rates, porosity , coefficient of storage, permeability, and potentiometric surface; 4.5.5 Site location in relation to the base floodplain of nearby drainages; 4. 5.6 An evaluation of the potential for impacts to existing surface water and groundwater quality from the proposed facility for solid waste disposal; 4.5.7 The existing quality of groundwater beneath the proposed facility. 4.6 The engineering design and operations report shall contain, as a minimum, the following engineering data: r4. 6.1 The type and quantity of material that will be required for use as a daily or intermediate cover over the life of the site and facility, - 18 - 4.6. 2 The type and quantity of material that will be required for use as liner material or final cover, including its compaction density and moisture content specifications , and the design permeability, 4.6.3 Maps and plans, drawn to a convenient common scale, that show: )a7.) a. the location and depth of cut for liners; and daily or intermediate cover, and final cover; '->4 b. the location and depths of proposed fill or processing areas; c. the location, dimensions, and grades of all surface water diversion structures; d. the location and dimensions of all surface water containment structures, including those designed to impound contaminated runoff leachate, sludge, or liquids for evaporative treatment ; e. spatial distribution of engineering, geologic and hydrologic data, and relationship to proposed facility; f. the location of all proposed facility structures and access roads; g . the location of all proposed monitoring points for surface water and groundwater quality and explosive gases; ' 'h. the final contours and grades of the fill surface after closure; `-i. the location of fencing to be placed on-site; 'j. the locaton of each discrete phase of development; 4.6.4 Construction details for all proposed monitoring points for surface water and groundwater quality and explosive gases. 4.7 The engineering design and operations report shall include, as a minimum, the following operational data: 4.7.1 The qualifications , names , and addresses of the persons operating the facility and having the authority to take corrective action in the event of noncompliance; 4.7.2 The hours of the day and days of the week that the facility will be operating; 4.7.3 The types and daily volumes in yards per day and/or gallons per month of wastes to be received , expected life of site. If sludge is to be received, its quality should be determined in accordance with Department technical guidelines. - 19 - 4.7.4 The number, classification, and job descriptions of personnel projected to be employed at the facility when operating at full capacity; 4.7.5 Number, description, and uses of all equipment projected to be employed at the facility when operating at full capacity; 4.7.6 Systems of records to be maintained, including incoming waste volumes, water quality monitoring results, explosive gas monitoring results, as-built construction details, and variations from approved operations procedures; 4.7.7 The size and types of disposal cells or processing areas to be constructed; 4.7.8 The frequency of the application of adequate cover; 4.7.9 The types and heights of fencing to be placed on-site; 4.7.10 Provisions to minimize nuisance conditions on-site; i , 4.7.11 Provisions for fire protection to eliminate open burning on-site, and to prevent the spread of open burning to adjoining property; 4.7.12 Provisions for the retrieval of windblown solid wastes , on or off-site; 4.7.13 Conceptual plans to be implemented if the contamination of surface waters or groundwaters occur, or if nuisance conditions are confirmed beyond the site boundary; 4.7.14 The amounts and sources of water to be used on site for the control of nuisance conditions, fire protection, construction purposes and personnel use. 4.8 Closure Data: The engineering design and operations report shall include, as a minimum, the following closure data: 4.8.1 Provisions for the maintenance of the facility after closure, to prevent or minimize nuisance conditions; 4.8.2 Provisions for the monitoring of explosive gas and groundwater wells or surface water after closure; t),� 4.8.3 Plans for final closure of the facility, including planned final contours of fill surface after closure. i - 20 - I . 5.1 Issuance of certificates of designation for new facilities for solid I waste disposal: Certificates of designation are issued by Boards of County Commissioners in accordance with the requirements for the i .consideration of applications contained in Sections 30-20-104 and 30-20-105 of the Act. 5.1.1 Factors to be considered (1) In considering an application for a certificate of designation, the board of county commissioners shall take into account: (a) The effect that the solid wastes disposal site and facility will have on the surrounding property, taking into consideration the types of processing to be used, surrounding property uses and values, and wind and climatic conditions; t[ (b) The convenience and accessibility of the solid wastes disposal site and facility to potential users; (c) The ability of the applicant to comply with the health standards and operating procedures provided for in the Act and such rules and regulations as may be prescribed by the Department; a 4 St (d) Recommendations by local health departments. (2) Except as provided in the Act, designation of approved solid wastes disposal sites and facilities shall be discretionary with i: . the Board of County Commissioners, subject to judicial review by i the district court of appropriate jurisdiction. f (3) Prior to the issuance of a certificate of designation, the board of county commissioners shall require that the report which shall be submitted by the applicant under section 30-20-103 of the Act be reviewed and a recommendation as to approval or disapproval made by the Department and shall be satisfied that the proposed 7 solid waste disposal site and facility conforms to the II comprehensive county land use plan, if any. The application, report of the Department , comprehensive land use plan, and other pertinent information shall be presented to the board of county commissiners at a public hearing to be held after notice. Such notice shall contain the time and place of the hearing and shall 11 state that the matter to be considered is the applicant 's proposal for a solid waste disposal site and facility. The notice shall be published in a newspaper having general circulation in the county in which the proposed solid waste disposal site and facility is located at least but not more than thirty days prior to the date of the hearing. 5.1.2 If the board of county comissioners deems that a certificate of 6 designation should be granted to the applicant , it shall issue the certificate, and such certificate shall be displayed in a prominent place at the site and facility. The board of county commissioners shall not issue a certificate of designation if the Department has recommended disapproval pursuant to section 30-20-103 of the Act. i - 21 - 5.1.3 The county Board of Commissioners shall forward a copy of the certificate of designation to the Department . 6.0 These regulations apply to waste impoundments that store, treat or dispose of liquid , semisolid or solid wastes , except as provied in 6.0.4 for facilities in operation prior to adoption of these regulations. 6.0.1 These regulations do not apply to wastes which; A. Are subject to a permit issued pursuant to the Colorado Mined Land Reclamation Act , CRS 1973, 34-32-101, et seq. as amended; or B. Are subject to license issued pursuant to the Radiation Control Act, CRS 1973, 25-11-101, et seq. as amended; or C. Are subject to a Certificate of Designation or permit issued pursuant to the Hazardous Waste Act , CRS 1973, 250150191, et sea. as amended; or D. Are industrial discharges which are point sources subject to permits under the provisions of the Colorado Water Quality Control Act , CRS 1973, 25-8-101, et sea . as amended; or E. Are subject to: a Consent Order, Decree or Agreement; or a Written Cooperative Agreement issued pursuant to the Solid Waste Disposal Sites and Facilities Act, CRS 1973, 30-20-101, et sea . as amended, to the extent that the treatment, storage or disposal of such wastes in a waste impoundment is approved by the Department pursuant to such consent order, decree, agreement, or written cooperative agreement; 3i F. Are subject to: an uncontested Order; a Consent Order, Decree or Agreement; or a Written Cooperative Agreement issued pursuant to the Federal Comprehensive Environmental Response Compensation and Liablity Act of 1980, as amended , to which the Department is a signatory party; to the extent that the treatment , storage or disposal of such wastes in a waste impoundment is approved by the Department pursuant to such uncontested order, consent order, decree , agreement , or written cooperative agreement; G. Will be beneficially reused , or; H. Are agricultural wastes. - 22 - 6.0. 2 The Department of Health will consider on-site oil and gas liquid waste impoundments to be in compliance with these regulations if: A. The disposal facilities are regulated by the Oil and Gas Conservation Commission, B. There is no imminent or substantial endangerment to public health or the environment from the disposal facilities, and C. Compliance with the Certificate of Designation requirement is not required by the County within which the site is located (for central disposal facilities only). 6.0.3 The following listed parts of Section 6 of these regulations do not apply to the noted classes of waste impoundments. Class I : 6.1.3, 6.1.4, 6. 2.2 Class II: 6.1.2, 6.1.4, 6.2. 1, 6.7.5 Class III: 6.1. 2, 6.1.3, 6.2.1, 6. 2. 2, 6. 3.0, 6. 3.1 , 6.3.2, 6.4.3, 6.5.0, 6.5.1, 6.5.2, 6.5.3, 6.6.3, 6.7.5, 6.7.8, 6.8. 2, 6.8.3 6.0.4 Those sites and facilities in operation prior to adoption of these regulations may be required to come into compliance with these regulations upon a determination by the Department that such sites and facilities are causing impairment of existing or future use of surface water or'groundwater. 6.0.5 Surface and groundwater monitoring may be required by the Department at existing sites where seepage from an impoundment and impairment of existing or future use of surface or groundwater are determined to be probable. 6.1 In addition to applicable requirements in the preceding sections of these regulations, sections 6.0 through 6.9 shall apply to waste impoundments which are regulated under the Solid Waste Disposal Sites and Facilities Act. 6.1.1 To determine whether an impoundment is in Class I, II or III as described in sections 6.1.2, 6.1.3 and 6.1.4 herein, the following criteria shall be utilized: A. The potential of the site as an aquifer recharge area , I - 23 - L B. The quality of the water in the highest aquifer according to the following parameters: Total Dissolved Solids Chloride Total Organic Carbon . . Iron Total Organic Halogen Lead Phenolic Compounds Potassium pH Sodium _ Calcium Sulfate t and all other known or probable constitutents of the wastes which will be contained in the impoundment, C. Existing or future uses of any surface or groundwater which could be imparied by seepage from the impoundment, D. The constituents of the waste , their toxicity, mobility and persistence, E. The geologic and hydrologic characteristics of the site. 6.1.2 An impoundment shall be in Class I (no seepage allowed beyond liner) if it: . 1 A. Is located in a recharge area for an underground souce of drinking water or over any unconfined aquifer and B. Seepage of waste or constituents from the impoundment would '?'! I impair existing or future use of groundwater if allowed to reach that groundwater. 1 6.1.3 An impoundment shall be in Class II (Controlled seepage) if it: A. Is located in a recharge area for an underground source of drinking water or over any unconfined aquifer, or in an area where no saturated zone exists between the surface and bedrock but the Class III criteria are not met , and 1 B. Seepage of waste or constituents from the impoundment would impair existing or future use of groundwater, if 1 constructed without a liner. 6.1.4 An impoundment shall be in Class III (unrestricted seepage) if 1 it: A. Is located outside a recharge area for an underground source of drinking water or in an area where no saturated zone exists between the surface and continuous strata of competent bedrock with an in—situ permeability of 10-6 m/sec or less , and minimum thickness of 50 feet , or I I - 24 - B. Is located above an aquifer where impairment of existing or future use of groundwater will not occur due to unrestricted seepage of the waste or constituents intended for storage or disposal in the impoundment. 6. 2.1 Class I impoundments shall incorporate; A. Double liners with a highly permeable collection layer between, and B. Sump and access piping to allow detection and collection of any leakage through the upper liner. C. Class I impoundment operation plans must contain a contingency plan for action to be taken if leakage is detected in .the liner sump, requiring written notification within fifteen working days of the Health Departments , and either: 1. Closure and emptying of the impoundment to repair leaks , or 2. Institution of daily removal of liquid from the sump, measurement and recording of volume removed , and a monitoring program to detect any leakage through the second liner. If such leakage is detected , the impoundment shall be immediately closed and the contents removed to another approved impoundment. A '• detailed written assessment of the impact of escaped waste or constituents shall then be required of the operator within forty five days, or less, as required by the Health. Departments. If this option is specified in the original application, the monitoring system must be installed when the impoundment is constructed. 6. 2.2 Class II impoundments shall incorporate: A. Single layer liners designed and constructed to prevent or restrict seepage from the impoundment to a rate which will not cause impairment of existing or future use of groundwater beneath the site , and B. Monitoring systems such as underdrainage and sump, cutoff trench or wells located to enable detection and assessment of the controlled seepage impact on the receiving aquifer. C. Class II impoundment operation plans must contain: • - 25 - 1 . Methods for assessing the impact of seepage on the receiving aquifer based on a schedule of periodic sampling of groundwater which is or may be impacted , and 2. A contingency plan for action to be taken if the quantity or quality of seepage escaping from the impoundment exceeds the approved design limits. The plan shall include the requirement that the operator notify the Health Departments in writing within • fifteen working days of the detection of exceedance of the design seepage rate or allowable seepage quality and within forty five days submit a detailed written assessment of the impact of the seegage on the receiving aquifer and proposed remedial action. 6.3 Lining material for waste impoundments shall be compatible with wastes to be received, to be determined by manufacturer test data for synthetic material or laboratory testing of any clays or other material proposed as liners. 6.3.1 Minimum testing of clay or other material shall include: A. Test for dispersive reaction in the waste to be impounded , B. Moisture-density relations (ASTM D698) C. Elevated pressure permeability testingof clay or other material compacted to 95% of optimum, first with one hundredth Normal (0.01N) calcium sulfate solution until constant permeability values are obtained, followed by passage of at least two pore volumes of liquid from the waste to be impounded, at least one other sample compacted to 90% of optimum, and D. Atterberg limits (ASTM D423 and D424) . 6. 3.2 Uniformity of composition of a clay or other soil deposit proposed for use as liner shall be demonstrated by determination of engineering properties for samples representative of the total volume of the deposit to be used. 6.4 Waste impoundments shall be designed to perform as classified. 6.4.1 All impoundments shall be equipped with a fixed clearly visible gauge to indicate the depth of waste to the nearest five hundreds (0.05) of a foot. The elevation of the floor of the impoundment and a permanently fixed bench mark on the site shall be indicated on the plans, to enable checking of gauge setting. — 26 — 6.4.2 Embankments shall be designed to minimize erosion and to withstand all forces from impounded wastes. 6.4.3 Clay soil liners shall be protected from erosion, desiccation or drying by soils or synthetic covers and influent energy dissipation devices or pads. 6.4.4 The maximum design depth of waste shall be controlled by the permeability of the liner, class design and operation requirements, consideration of the efficiency of evaporation and allowance for a minimum two feet of free board. 6.4.5 Monitoring wells or sump access pipes shall be lockable, and be constructed with materials which will not interface with monitoring of the facility. 6.4.6 All waste impoundment facilities which use evaporative treatment shall acquire standard Class A pan evaporation and precipitation data from the nearest National Weather Service station or other reliable source of data, to be used in the calculations specified in section 6.8.1. Differences expected in precipitation or evaporation between the data collection station and the impoundment shall be clearly indicated in the facility engineering report and operation plan. The operator shall maintain a precipitation gauge on—site, to check the applicability of data from other sources. 6.4.7 All waste impoundment facilities shall be provided with a means of quickly and accurately determining the total volume of wastes in each impoundment and the exposed surface area by correlation with the depth of wastes. The preferred means is a table listing depths from zero in five hundredths of a foot graduations up to the total design depth, with the correlated volume impounded and the surface area at each depth. 6.4.8 All impoundment facilities shall have upgradient and downgradient monitoring wells completed to an appropriate impervious layer or to bedrock which underlies either the unsaturated zone or saturated receiving acquifer to confirm the permeability of bedrock or quality of aquifer water and to allow sampling of recharge or seepage from the impoundment . 6.4.9 Facilities which include tanks must include plans and specfications for the tanks and associated piping in the facility engineering report. 6.5 Waste impoundments shall be constructed according to detailed plans and using quality control measures specified in the facility engineering report to ensure attainment of design permeability and prevent mechanical or chemical degradation of liners during construction and active life . USEPA publication SW-870 (1983) is recommended for general construction guidelines. - 27 - 6.5.1 Syntetic liners shall be installed according to the manufacturer's instructions, which shall be submitted as part of the facility engineering report . 6.5.2 Clay or soil liners shall be installed according to the _ recommendations of a qualified and experienced engineer or geologist, which shall be submitted as part of the facility engineering report . 6.5.3 Construction of liners shall be inspected by an experienced soil technician, engineer or geologist whose report , including daily visual observations, moisture, density and permeability (if recommended) test results, shall be submitted to the Health Departments. 6.6 Operation of waste impoundments shall be in accordance with approved plans and the minimum standards of these regulations. 6.6.1 No incompatible wastes shall be commingled in the same impoundment. 6.6.2 Disposal of any waste streams significantly different from those orignially approved shall constitute a substantial change in operation. 6.6.3 The integrity of liners shall be maintained by prevention of I damage through uncontrolled or improper discharge of wastes into the impoundment, vehicle traffic, dredging of settled sludge, skimming of oil , maintenance of spray systems or other actions. 6.6.4 Waste impoundment facilities which are required to obtain a Certificate of Designation shall maintain at least one operator on the site and in charge of all activities during scheduled open hours. IL 6.6.5 All impoundments operated as evaporative treatment or disposal facilities shall be maintained as free as possible from oil or I other surface scum. 6.7 Monitoring plans and schedules for waste impoundment facilities shall be specified in the operation plan and adhered to throughout the active life it closure period. All chemical analyses shall be submitted to the Health l Departments within thirty days after receipt by the operator. r 6.7.1 Each waste stream entering a waste impoundment facility which is required to obtain a Certificate of Designation shall be tested at least annually by the operator to demonstrate conformance I_ with the orginial analyses by taking an unannounced grab sample from trucks entering the facility and conducting analyses for the original or approved amended list of parameters. If any waste is found to differ significantly from the original analysis , the Health Departments shall be notified in writing within fifteen working days. J 1 . - 28 - 6.7.2 Each truckload of waste entering a commercial waste impoundment facility which is required to obtain a Certificate of Designation shall be registered, with the following information • entered on a single receipt: Date and Time Receiving impoundment identification Quantity Type of Waste Location produced Owner and/or leasee where produced Hauler and truck number Driver's name and signature Individual load receipts shall be maintained for at least two years, monthly summaries for the life of the facility. Monthly summaries for each impoundment shall contain the following: Total volume of each waste stream disposed Waste stream identification(s) 6.7.3 At least one sample of the contents of each Class I or II impoundment shall be analyzed annually for the original or amended list (s) of characteristic parameters for all waste streams placed in the impoundment. Samples from Class III impoundments shall be taken and analyzed quarterly. If the impounded wastes are subject to stratification, a separate sample shall be taken from representative levels , including settled sludge and oil or other surface scum. Measurement of the thickness of each layer shall be performed as part of this analysis. 6.7.4 Records shall be maintained to fully document any damage and repairs to embankments or liners, personal injury accidents, spills, detection of liquids in sumps, fires or explosions. Written notification shall be submitted to the Health Departments within fifteen working days after discovery of such liner damage or other event which affects the operation of the facility. 6.7.5 Class I liner sumps shall be inspected weekly for presence of any liquids. If liquids are found , samples shall be analyzed immediately, and thereafter monthly samples shall be analyzed for the original or approved amended list (s) of parameters for all wastes in the impoundment. 6.7.6 Monitoring wells for Class I and II impoundments shall be sampled quarterly unless more frequent sampling is required by a remedial action or special investigation program. Monitoring wells for Class III impoundments , if required by the Department , shall be sampled at least annually. Analyses of well samples shall include indicator parameters determined as appropriate after initial waste and aquifer water analyses are submitted for review. - 29 - • 6.7.7 Frequent general inspection and written documentation of the _ condition of impoundment embankments and related piping or structures by the operator, shall be specified in the facility operation plan. The inspection plan shall include requirements to look for any ground movement , cracks, erosion, leaks , rodent burrows, vegetation growing on a liner soil cover, or other problems which may affect the integrity of an impoundment . 6.7.8 Clay or other soil liner material which has been continuously exposed to impounded wastes shall be sampled and tested for permeability as specified in section 6.3.1 at intervals of not more than five years. Sampling points shall be repaired as specified in the facility engineering report. 6.8 Monthly summary records shall be maintained until final closure of the facility (Section 6.9.1) documenting the origin, volume in storage, shipment to other facilities , and rate of disposal of all wastes. All records, including but not limited to facility inspection logs, daily depth readings, precipitation, waste and monitoring analyses, and load receipts shall be maintained available for inspection by representatives of the Health Departments at all times. 6.8.1 The operator of a facility employing evaporative treatment shall Ii- calculate and record on a quarterly basis: A. The total volume of wastes and precipitation added to each impoundment.- (Volume A) 1 B. The total pan evaporation during the quarter at the Weather II- Service or other station specified according to section 6.4.6, multiplied by the appropriate "Lake Evaporation 11- Coefficient" (as recommended by the consultant), then multiplied by the average surface area of each impoundment t during the quarter, to give the maximum possible volume of evaporate loss. (Volume B) 3 C. The total change in volume of wastes stored in each 1 impoundment by two methods: • 1. Volume on first day of quarter subtracted from the t volume on the last day of the quarter (from depth readings) , and 2 2. Maximum evaporative loss (volume B) subtracted from the total added (volume A). Seepage shall be neglected in this calculation. I 6.8. 2 If the volume change found according to depth readings is equal to or greater than the change calculated from the addition and evaporation data , the Health Departments shall be notified in 1 writing within fifteen working days. Class III impoundments area exempt from the notification requirements . 1 - 30 - 6.8.3 Observed volume losses more than twenty percent greater than that predicted from calculations performed in accordance with 6.8.1 for Class I and II impoundments indicate probable liner failure. In such instances, no wastes shall be added to the impoundment for a minimum one week observation period , even though monitoring wells or sumps may not indicate leakage or contamination. 6.9 In addition to the requirements of section 4.8 of these regulations, the facility closure plan shall contain provisions for testing residual sludge for hazardous characteristics and for final disposal of the sludge. 6.9.1 Operators of all impoundment facilities regulated under the Solid Waste Disposal Sites and Facilities Act (including exisiting facilities) shall submit a report to the Health Departments at the time of final closure which summarizes the total volume of each waste stream disposed in each impoundment and identifies the person(s) responsible for post closure control of the site. 7.1 The Department is authorized to collect a fee for the review of new or _ amended applications and for preoperation inspections of solid waste disposal sites and facilities. Payment shall be provided by the applicant prior to the issuance of a final recommendation on the application by the Department pursuant to Section 3. 1.3 of these regulations. • 7.2 The Department shall charge the following fees to review applications and to conduct preoperation inspections of solid waste applications . CLASS QUANTITY UNITS FEE CEILING A under 999 yards/day 350/hr $1 ,000 of waste B 1000 yards of waste $1000/1000 yds/day $5,000 or more/day C gallons of liquid waste $1000/20,000 gal/mo $10,000 7. 3 Payments shall be made through the Colorado Department of Health, payable to the Treasurer of the State of Colorado, such monies shall be credited to the Solid Waste Management Fund. A recommendation for approval or denial of a Certificate of Designation will not be made by the Department _ unless full payment of the application review fee is received by the Treasurer. APPENDIX B HYDROGEOLOGIC ASSESSMENT (REPORT PREPARED BY WARZYN ENGINEERING INC.) COLORADO LANDFILL INC.- EATON LANDFILL HYDROGEOLOGIC ASSESSMENT WELD COUNTY, COLORADO C 400005 C 400005 TABLE OF CONTENTS Page No. INTRODUCTION 1 A. Location and Background Information 1 FIELD INVESTIGATION 1 A. Scope of Work 1 1. Drilling and Soil Sampling 2 2. Monitoring Well Installation 3 3. Permeability Tests 3 4. Surface Water Monitoring Points 4 5. Water Sample Collection and Analysis 4 6. Surveying 5 7. Water Level Monitoring 5 REGIONAL SETTING 6 A. Regional Geology 6 B. Regional Topography 6 C. Regional Hydrogeology 6 RESULTS OF FIELD INVESTIGATION 6 A. Geology 6 B. Hydrogeology 7 C. Groundwater Quality 9 D. Surface Water Quality 11 SUMMARY 11 RECOMMENDATIONS 12 LIST OF TABLES Table 1 - Groundwater and Surface Water Elevations 8 Table 2 - Groundwater and Surface Water Quality Data 10 WARZYN ONOWUSOWO 1NC C 400005 Table of Contents Page 2 LIST OF APPENDIXES Appendix A - Subsurface Investigation - General Remarks Appendix B - Logs of Test Borings Appendix C - Monitoring Well Construction Details Appendix D - Baildown Permeability Test Results • • WARZYN [l a s-I7-7] tNOINY[PINO INC ___-T 7 ...___ ___ _ _._.._.._.__._.. _. C 400005 COLORADO LANDFILL INC.- EATON LANDFILL HYDROGEOLOGIC ASSESSMENT WELD COUNTY, COLORADO INTRODUCTION A. Location and Background Information This report presents the results of a hydrogeologic assessment of the Colorado Landfill Inc. (CLI) , Eaton Landfill facility. The investigation was completed in accordance with the May 1, 1984 Professional Services Agreement between Warzyn Engineering Inc. (WEI) and CLI. The Eaton facility covers approximately 25 acres and is located about three miles northeast of Eaton in the SE 1/4 of Section 21, T7N, R65W, Weld County, Colorado. The Eaton Landfill handles non-hazardous municipal refuse from the Town of Eaton and the surrounding area. The site is bounded on the north, west and east by irrigated farmland and on the south by a county road. The northern two-thirds of the site has been brought to final grades, covered and is under cultivation. The south one-third of the site currently is being filled. FIELD INVESTIGATION A. Scope of Work The hydrogeologic field investigation at the Eaton Landfill consisted of the — following activities: 1. Drilling and soil sampling at three monitoring well sites; 2. Installation of 3 two-inch diameter, threaded PVC monitoring wells • with sand pack, concrete surface seal and locking protective steel casing; WARZVN Moiwue wt 3. Performance of three short-term baildown permeability tests ; 4. Establishment of three surface water monitoring points; 5. Groundwater and surface water sample collection and analysis; 6. Surveying of monitoring well and surface water monitoring point elevations; and 7. Water level monitoring at monitoring wells and surface water monitoring point. 1. Drilling and Soil Sampling The drilling and sampling of the three boreholes for the monitoring wells occurred on May 15, 1984. Logs of the boreholes are included in Appendix B of this report. The three boreholes were advanced using a truck-mounted CME 55 drill rig with hollow stem augers and a center plug bit. Drilling fluids were not used. The drill rig and drilling crew were provided by Drilling Engineers Inc. with technical supervision provided by Warzyn Engineering Inc. Borehole depths ranged from 15 to 25 feet. • Split spoon samples were obtained at 2 1/2-foot intervals in the upper 10 feet of each borehole and at 5-foot intervals thereafter. The split spoon sampler was driven using a 140-pound hammer falling freely through a vertical drop of 30-inches in accordance with ASTM specifications. Blow counts were • recorded for each 6-inch increment or until refusal (50 blows) . Recovered samples were first classified as to texture by the drillers. The driller's classification was then reviewed in the laboratory by a soils engineer who examined each sample. Some general remarks on the subsurface , investigation are presented in Appendix A. • -2- WARZVN .tiew...wm,e tae 2. Monitoring Well Installation The three monitoring wells , EMW-1, EMW-2 and EMW-3 (EMW-Eaton Monitoring — Well ), were constructed of 2-inch diameter, flush joint, threaded PVC pipe and screen. Threaded end plugs were utilized at the bottom of each well screen. Each well string was threaded together and then installed into the borehole through the hollow stem augers to the desired depth. A temporary cap was placed on the top of each well to exclude foreign debris from entering the well as the augers were withdrawn from the borehole. The annular space around the well was backfilled with coarse sand from the • bottom of the hole to a level at least 1 foot above the top of the screened interval . The annular space was then backfilled to approximately 2 feet below the ground surface with a mixture of spoil , powdered bentonite and coarse sand. Protective steel casings with locking caps were then placed around the above-ground PVC pipes and cemented in place. Construction specifications for each of the monitoring wells are included in Appendix C. 3. Permeability Tests Bail down permeability tests were conducted by WEI at each of the three Eaton Landfill monitoring wells on May 16, 1984. The test methodology consisted of drawing down the water level in each well by bailing, then recording the gradual recovery of the water level to approximately 98% of the original static water level . WARZVN •NOINUONMC me -3- The test results were analyzed by a WEI computer program and checked by WEI personnel . The permeabilities calculated from the test results are presented in Appendix D and discussed in the RESULTS OF FIELD INVESTIGATION section of this report. 4. Surface Water Monitoring Points Two surface water sampling points (ESW-2 and ESW-3) (ESW-Eaton Surface Water) and one surface water level monitoring point (ESW-1) were established on Lone Tree Creek, east of the Eaton Landfill site. Sampling Point ESW-2 is located downstream from the landfill area where Lone Tree Creek turns east along the county road, south of the landfill property line. Sampling Point ESW-3 is located upstream of the landfill . Monitoring Point ESW-1 was established at the top of the orange I-beam on the southwest end of the bridge over Lone Tree Creek east of the landfill . The level of the creek was measured relative to point ESW-1. Monitoring point locations are shown on Drawing C 400005-2. 5. Water Sample Collection and Analysis Water samples were collected from each of the three monitoring wells on May 17, and June 19, 1984. The initial round of samples was collected by WEI personnel . The second round of samples was collected by CLI personnel . Samples were collected at surface water sampling points ESW-2 and ESW-3 by WEI on May 17 , 1984 only. Each of the samples was analyzed by Warzyn Analytical Laboratories in Madison, Wisconsin for the following constituents: alkalinity, COD, total hardness, nitrate-nitrogen, TOC, sulfate, ammonia nitrogen, calcium, magnesium, sodium WARZVN liNCSINOSPIONO INC and potassium. Conductivity and pH were measured in the field immediately after sampling. The results of the analyses are presented and discussed in the RESULTS OF FIELD INVESTIGATION section of this report. 6. Surveying A level survey was conducted at the Eaton Landfill on June 15, 1984 by McRae and Short, Inc. of Greeley, Colorado. The three monitoring wells were surveyed to the top of the PVC casing. Monitoring Point ESW-1 was surveyed at the top of the orange I-beam on the west side of the bridge over Lone Tree Creek, approximately 1,600 feet east of the southeast corner of the landfill . The survey results are presented in Table 1 of the RESULTS OF FIELD INVESTIGATION section of this report. 7. Water Level Monitoring Water levels were measured at the monitoring wells and surface water monitoring point during each sample collection round. The monitoring dates were May 17 and June 20, 1984 for each of the wells and May 17,1984 for ESW-1. Water level data are presented in Table 1 and discussed in the RESULTS OF FIELD INVES- TIGATION section of this report. The measured water levels provided sufficient data to produce a contour map of the potentiometric surface or water table of the shallow aquifer. The map is discussed in the RESULTS OF FIELD INVESTIGATION section and is included on Drawing C 400005-2. WARZVN •noInEIwMIo INC _5 W REGIONAL SETTING A. Regional Geology The Eaton Landfill is situated on the west flank of the structurally defined Denver basin. The geologic unit found within 25 feet of the surface at the Eaton Landfill is Quaternary-age eolium or windblown deposits. The eolium generally consists of windblown gravel , sand, silt and clay. B. Regional Topography The topography of the Colorado Piedmont is characterized by relatively flat uplands and broad valleys. The Eaton site is located in the flat floodplain of Lone Tree Creek. Ground surface elevations around the site range from Elevation 4,820 in the southeast corner of Section 21 to Elevation 4,840 northwest of the site. Surface water drainage is to the south-southeast via Lone Tree Creek. C. Regional Hydrogeology Hydrogeologic information for the area around the Eaton Landfill has not been documented. This assessment will provide the initial documentation of shallow groundwater flow directions, water quality and permeability data for the water- bearing Quaternary-age deposits in the Eaton Landfill area. RESULTS OF FIELD INVESTIGATION A. Geology The subsurface geology at the Eaton Landfill site consists primarily of Quater- nary-age wind and stream deposits of gravel , sand, silt and clay. Bedrock units were not encountered during the drilling program. Monitoring Well EMW-1 in the northwest corner of the site encountered 25 feet of sand with silt and gravel . Wells EMW-2 and EMW-3 were drilled to 15 feet and encountered sandy silt, sand, and gravel deposits. WARZYN ..,OIN..NI..o WC -6- W The Quaternary deposits consist of loose, brown, fine sandy silt to dense, pink coarse sand with little fine to coarse gravel . The soil classifications for the Quaternary deposits range from ML to SM to SP using the Unified Soil Classification System (USCS). Refer to Appendix B for summary of USCS. B. Hydrogeology Based on the first two rounds of water level monitoring by WEI and CLI, the depth to groundwater at the Eaton Landfill ranges from 8 to 10 feet at Wells EMW-2 and EMW-3 respectively, to nearly 20 feet at Well EMW-1 in the northwest corner. Groundwater flow beneath the Eaton Landfill is to the southeast based on ground- water elevations measured on June 20, 1984 (Table 1) . The average horizontal hydraulic gradient across the site is approximately 0.005 ft./ft. between upgradient Well EMW-1 and downgradient Well EMW-3. The hydraulic gradient generally corresponds to the topographic gradient across the site. Water levels in Lone Tree Creek are significantly higher than levels in the monitoring wells directly west of the stream. This indicates that one of the following conditions may exist at the site: 1. Lone Tree Creek is recharging the Quaternary deposits adjacent to the stream; or 2. The stream channel is sufficiently impermeable to isolate the stream from shallow groundwater flow. At this time, the existing data are insufficient to determine which of the above conditions exists at the Eaton Landfill . WARZYN •Hoow••.wo we -7 TABLE 1 GROUNDWATER AND SURFACE WATER ELEVATIONS EATON LANDFILL MAY-JUNE, 1984 Elevation of Elevation of Elevation of Measuring Point Water Level Water Level Monitoring Site (ft. MSL) (5/17/84) (6/19/84) EMW-1 4840.39* 4820.52 4821.0 EMW-2 4824.57* 4815.56 4816.9 EMW-3 4821.59* 4812.17 4811.9 ESW-1 4821.24** 4813.93 4813.3 * Measuring point for monitoring wells is the top of the PVC casing. ** Measuring point for ESW-1 is the top of the I-beam on the bridge over Lone Tree Creek. [las-17-9] WARZVN �r.owuwino W'C -8- Permeability of the Quaternary deposits was calculated from baildown tests at wells EMW-1, EMW-2 and EMW-3. Calculated permeabilities ranged from 5 x 10-4 centimeters per second (cm/s) at EMW-3 to 1 x 10-2 cm/s at EMW-2. The permeability at Well EMW-1 was 7 x 10-3 cm/s. Test results are presented in Appendix D. C. Groundwater Quality Groundwater samples were collected from Wells EMW-1, EMW-2 and EMW-3 on May 17 and June 19, 1984. Based on the southeastward direction of groundwater flow at the Eaton Landfill , background water quality is represented by Well EMW-1. Well EMW-2 is located along the eastern edge of the site and is down gradient from the northeast corner of the site. Well EMW-3 is located along the south property line of the landfill and is downgradient from the site. The results of two rounds of water quality sampling at the Eaton Landfill monitoring wells are presented in Table 2. Well EMW-2, shows slightly elevated conductivity and concentrations of alka- linity, chloride, total hardness and sodium relative to the upgradient Well EMW-1 and the down gradient Well EMW-3. The chloride concentration at Well EMW-2 also increased 79 milligrams per liter (mg/1 ) between the first and second sampling rounds. These data indicate that the landfill may have an effect on Well EMW-2. The part of the landfill upgradient from EMW-2 contains the oldest refuse on the site. The second round of analyses indicated slight increases in nitrate-nitrogen and magnesium as well as an increase in conductivity of 680 to 930 micromhos per WARZYN .P OWdUSSONo.c -9- -- TABLE 2 GROUNDWATER AND SURFACE WATER QUALITY DATA EATON LANDFILL MAY - JUNE, 1984 Samples Collected 5/17/84 Samples Collected 6/19/84 Constituent* EMW-1 EMW-2 EMW-3 ESW-2 ESW-3 EMW-1 EMW-2 EMW-3 pH 7.3 6.9 7.3 8.3 8.3 7.2 7.3 7.4 _ Conductivity 1890 2220 1940 720 705 2810 3150 2620 at 25° C Alkalinity 337 546 361 195 195 341 475 369 Chemical Oxygen - Demand 50 32 < 10 < 10 < 10 54 46 31 Chloride 48 140 70 25 29 50 219 69 Total Hardness 856 1210 913 278 319 858 1030 907 Nitrate Nitrogen 10.2 2.07 13.8 1.33 1.09 14.1 5.76 16.2 Total Organic Carbon 10.0 9.6 6.3 11.7 12.2 9.0 11.6 8.9 Sulfate 696 643 685 163 137 627 527 615 Ammonia Nitrogen < 0.10 0.23 < 0.10 < 0.10 < 0.10 < 0.10 < 0.10 < 0.10 Calcium 230 250 242 71 71 215 248 243 Magnesium 83 102 83 26 26 98 117 101 Sodium 117 153 115 50 48 120 160 110 Potassium 8.46 12.6 13.4 13.0 12.5 6.23 9.15 9.78 Calculated Hardness 916 1044 946 284 284 941 1100 1020 * Concentration in milligrams per liter (mg/1 ) unless noted otherwise. WARZYN .roox4...wnw me [las-17-10] -10- -- centimeter (umhos/cm) at all of the wells. Sulfate and potassium concentrations decreased at all of the wells over the same period. These fluctuations have no apparent cause and are thus considered to be seasonal in nature. The increase in nitrate-nitrogen may be a result of fertilizing nearby irrigated fields. D. Surface Water Quality Water quality data from surface water sampling points ESW-2 and ESW-3 are presented in Table 2. Only one round (May 17, 1984) of surface water samples was collected from the Lone Tree Creek sites. The water quality at both sites was very similar, indicating no impacts on the stream from the landfill . By comparing the surface water quality of Lone Tree Creek with the groundwater quality of the monitoring wells, it appears that each is quite distinct. Concentrations of the majority of the constituents measured in the groundwater samples greatly exceed those of the surface water samples. The significant difference in water quality between the shallow aquifer and the creek further supports the idea that the two systems are hydraulically separated. SUMMARY 1. The CLI Eaton Landfill site covers an area of approximately 25 acres in the SE 1/4 of Section 21, T7N, R65W, Weld County, Colorado. 2. Subsurface geology at the Eaton Landfill consists of Quaternary-age deposits of gravel , sand, silt and clay that are at least 15- to 25-feet thick. WARZVN •NOIN*UMNO INC _11 w 3. The depth to groundwater ranges from 8 to 20 feet below the ground surface. Groundwater flow is to the southeast at an average horizontal hydraulic gradient of 0.005 ft./ft. The permeability of the Quaternary deposits ranges from 5 x 10-4 cm/s to 1 x 10-2 cm/s. 4. As indicated by water level and water quality data, Lone Tree Creek and the three monitoring wells do not appear to be hydraulically connected. 5. Monitoring Well EMW-2 may be affected by past land filling activities, although only to a minor degree. Leachate has not affected downgradient Well EMW-3. 6. Surface water quality in Lone Tree Creek is consistent between upstream sampling point ESW-3 and downstream sampling point ESW-2. RECOMMENDATIONS Based on the information and conclusions developed during this Hydrogeology Assessment, WEI recommends : 1. Continued monitoring of the three existing monitoring wells on a quarterly basis. 2. Continued water level monitoring at surface water monitoring point ESW-1 on a quarterly basis. • [las-17-8] WARZVN •NOlNftMNO 1MC -12- / 1 APPENDIX "A" Subsurface Investigation GENERAL REMARKS We have endeavored to evaluate subsurface conditions and physical properties of the subsoil as revealed by the borings and laboratory testing. A problem inherent in this evaluation is the variability in engineering properties within soil strata involved, and specifically in any location variation in the soil which is located between borings. Due to natural or man-made causes, subsurface conditions may change with time. Conclusions drawn and recommendations given in this report are for a specific proposed use of this site. They are our opinions and are based upon conditions that existed at the boring locations and such para- meters as proposed site usage, soil loading, elevations, etc. _ Since subsurface conditions depend on seasonal moisture varia- tions, frost action, construction methods, and the inherent natural varia- tions, careful observations must be made during construction. These should be brought to our attention as it may be necessary to modify the conclusions and recommendations presented herein. • _- APPENDIX B - LOGS OF TEST BORINGS • WARZYN ENOINEEPINO INC w 7 / 1 LOG OF TEST BORING Symbols Nrilir General Notes DRILLING AND SAMPLING \ CS—Continuous Sampling _ RC—Rock Coring:Size AW,BW,NW,2'W / \ Rag—Rock Quality Designator RB—Rock Bit Descriptive Soil Classification FT—Fish Tail DC—Drove Casing C—Casing:Size 2h",NW,4",HW CW—Clear Water GRAIN SIZE TERMINOLOGY DM—Drilling Mod HSA—Hollow Stem Auger Soil Fraction Particle Size U.S.Standard Sieve Size FA—Flight Auger Boulders Larger than 12' larger than 12' HA—Hand Auger Cobbles 3"to 12" 3"to 12" COA—Clean-Oat Auger Gravel:Coarse 3'4"to 3" 3'4"to 3" SS-2"Diameter Split-Barrel Sample Fine 4 78 mm to 34" #4 to Y'4" 2ST-2"Diameter Thin-Walled Tube Sample Sand: Coarse 200 mm to 4.70 mm #10 to#4 35T-3"Diameter Thin-Walled Tube Sample Medium 0 42 mm to 2.00 mm #40 to #10 PT-3"Diameter Piston Tube Sample Fine 0 074 mm to 0.42 mm #200 to#40 AS—Auger Sample Silt 0 005 mm to 0.074 mm Smaller than #200 WS—Wash Sample Clay Smaller than 0.005 mm Smaller than #200 PTS—Put Sample Plasticity characteristics differentiate between silt and clay. PS—Pitcher Sample NR—No Recovery_ S—Sounding GENERAL TERMINOLOGY RELATIVE DENSITY PMT—Borehole VShear Test Pr VS—Vane Shear Test Physical Characteristics Term "N"Value WPT—Water Pressure Test Color,moisture,grain shape,fineness,etc. Very Loose 0-4 Mater Constituents Loose 4-10 Clay,silt,sand,gravel Medium Dense 10-30 Structure Dense 30-50 LABORATORY TESTS Laminated,varved,fibrous,stratified, Very Dense Over 50 q.—Penetrometer Reading,tons/sq.ft. cemented,fissured,etc. q.—Unconfined Strength,tons/sq.ft. Geologic Origin W—Moisture Content,% Glacial,alluvlal,eolian,residual,etc. LL—Liquid Limit,% PL—Plastic Limit,% RELATIVE PROPORTIONS SL—Loss SE—Shrinkage g Limit,% CONSISTENCY LI—Los on ignition,% OF COHESIONLESS SOILS 0—Dry Unit Weight,lbs./cu.ft. Term q.-toas/sq.ft. Proportional Defining Range By Very Soft 0 0 to 0.25 pH—Measure Term Percentage of WeightFS—Free Swell,% of Soil Alkalinity or Acidity S Soft 0.25 to 0.50 Trace 0%- 5% Medium 0 50 to 1.0 Little 5%-12% Stiff 1 0 to 2M Some 12%-35% Very Stiff 2 0 to 4.0 And 35%-50% Hard Over 4.0 WATER LEVEL MEASUREMENT ;7—Water Level at time shown ORGANIC CONTENT BY NW—No Water Encountered COMBUSTION METHOD PLASTICITY WD—While Drilling CR—Afters Casing Removal Soil Description Loss on Ignition Term Plastic Index ACR—After Casing Removal Non Organic Less than 4% None to Slight 0-4 CW—Caved and Wet Organic Silt/Clay 4-12% Slight 5-7 CM—Caved and Moist Sedimentary Peat 12-50% Medium 8-22 Fibrous and Woody Peat .... More than 50% High to Vary High Over 22 Note:Water level measurements shown on The penetration resistance.N,Is the summation of the number of blows required to effect two the boring logs represent conditions at the successive B"pentratlons of the 2"split-barrel sampler.The sampler is driven with a 140 lb.weight time indicated and may not reflect static falling 30'and is seated to a depth of 8'before commencing the standard penetration test. levels,especially in cohesive soils. 2 - " ' UNIFIED SOIL CLASSIFICATION SYSTEM COARSE-GRAINED SOILS LABORATORY CLASSIFICATION CRITERIA (More than half of material is larger than No. 200 solve size.) Clean Gravels(Little or no lines) De ID," GWWell-graded gravels, gravel-sand mix- GW Cu= -greater than 4;Cc= between 1 and 3 lures,little or no lines D„ 0„)D„ - GRAVELS More than halt Gp Poorly graded gravels, gravel-sand mix- Gp Not meeting all gradation requirements for GW of coarse • tures,little or no fines traction larger than No-4 Gravers with Finn(Appreciable amount of lines) _ sieve size d GM Atterberg limits below-A" Above "A" line with P.I. GM D Silty gravels,gravel-sand-silt mixtures line or P.I.less than 4 between 4 and 7 are borderline cases requiring Atterberg mits above"A" use of dual symbols GC Clayey gravels,gravel-sand-clay mixtures GC line with Pli.I.greater than 7 Clean Sande(Lillie or no fines) De 10„11 Well-graded sands,gravelly sands,little or SW Cu= --greater than 6;Cc= between 1 and 3 SW no lines D,e O„XD e SANDS Poorly graded sands,gravelly sands,little More than half Sp or no lines SP Not meeting all gradation requirements for SW of coarse fraction maller4 Sands with Fines(Appreciable amount of fines) than Ns o. sieve size d Atterberg limits below-'A" Limits plotting in hatched SM u Silty sands,sand-silt mixtures SM ne or P.I.less than t zone with P.I. between 4 and 7 are borderline cases requiring use of dual sym- Cla Clayey sands,sand-clay mixtures SC Atterberg limits above"A" bolt' $C Y Y line with P.I.greater than 7 FINE-GRAINED SOILS Determine percentages of sand and gravel from grain-size Curve. Depending on percentage of fines(fraction smaller than No. 200 sieve size),coarse-grained soils are classified as follows: (More than half of material is smaller than No.200 sieve.) Less than 5 per cent GW.GP,SW,SP More than 12 per cent GM,GC.SM.SC 5 to 12 per cent Borderline cases Inorganic silts and very fine sands, rock requiring dual symbols ML flour, silty or clayey fine sands or clayey 'silts with slight plasticity SILTS AND PLASTICITY CHART tCLAYS Inorganic av clays oflow y medium plastid- CL Liquid limit le gravelly clays,sandy clays,silty clays. 60 less than lean clays 50% OL Organi silts and organic silly clays of lowplasti 50 ■■� ■'. d 40 .. MH Inorganic silts, micaceous or diatoms- --- —��ceous fine sandy or silty soils,elastic silts — T SILTS AND a S _ �� '40 OH and MH CLAYS CL n Liquid limit CH Inorganic clays of high plasticity,fat clays 20 _ greater than 50% 10 I ...� OH Organic clays of medium to high plasticity. 7 •-ML and OL organic silts 4 _ .\\�' — 0 ' 0 10 20 30 40 50 60 70 80 90 100 Liquid Limit HIGHLY _ ORGANIC PT Peat and other highly organic soils FIN alneAss classification of line-grained soils and line fraction of coarse- SOILS Atterberg Limits plotting in hatched area are borderline classifica- tions requiring use of dual symbols. Equation of A-line:PI=0.73(LL-20) _ �WARZYN LOG OF TEST BORING Boring No. EM41-1 Colorado Landfill Inc. Project Surface Elevation ._ Job No. C 400005 Location Eaton Site Sheet 1 of 1 ENGINEERING INC 1409 !MIL STREET• P.O. SOX 0630. MADISON. WIS. 53715 • TEL. (SOS) 977-4S49 • SAMPLE SOIL PROPERTIES VISUAL CLASSIFICATION Recovery Moisten and Remarks 9• W U. Pt. 0 No. Type 1 N Depth TOPSOIL 1 SS X M 6 Loose, Brown Silty Fine to Coarse SAND (SM) 2 SS X , r 5_ 4 Dense, Pink, Fine to Coarse SAND, Little Fine to Coarse — 4 SS X M 29 10— Gravel (SP) • 5 SS X M 21 15- i 20— Dense, Brown Fine SAND, Trace Silt (SP-SM) 7 SS X tJ 21 25— End Boring at 25' • 30- 35— • 40' WATER LEVEL OBSERVATIONS GENERAL NOTES While Drilling 2n' Star₹/15/84Complet/15/84 Upon Completion of Drilling Crew Chief ES Rip CME 55 Drilling Method HSA 0-25' Time After Grilling Depth to Water Depth to Cave In w., LOG OF TEST BORING y r /WA R ZY N EMW-2 Boring No. r‘je Project Colorado Landfill Inc. Surface Elevation Job No. G 490005 Location Eaton Site Sheet 1 of 1 ENGINEERING INC 1409 EMIL • P.O. SOX 9535. MADISON. WIS. 03710 • TEL. (SOS) 357-4545 SAMPLE VISUAL CLASSIFICATION SOIL PROPERTIES Recovery Moisture and Remarks W LL PL No. Type l I N Depth D Firm, Brown Fine to Coarse - 1 SS X M 9 =- SAND, Some Silt, Little Fine to Coarse Gravel (SM) 2 SS X W 28 ^5_ Dense, Pink Coarse SAND, Little Fine to Coarse — Gravel (SP) 3 SS X w 1'2 t0_ Loose, Brown Fine Sandy SILT, 4 SS X W 6 - 15 Little Clay (ML) End Boring at 15' 20- • 25_ • J0_ • 35- 4o- WATER LEVEL OBSERVATIONS GENERAL NOTES • While Drilling 5 star-t/15/$4complet`jj15/B4 Upon Completion of Drilling Crew Chief ES Rig CME 55 Time After Drilling Drilling Method NSA 0-15' Depth to Water _ W\ DePth to Cave In • WARZYN LOG OF TEST BORING_ . EMW-3 Boring No. Project Colorado Landfill Inc. Surface Elevation Job No. C 400005 ENGINEERING INC Location Eaton Site Sheet 1 of 1 1400 [MIL STREET • P.O. BOX 0630, MADISON, WEE. 63716 • TEL. (0O[) 7e7-4S4S SAMPLE SOIL PROPERTIES VISUAL CLASSIFICATION Recovery Moisture and Remarks W PL D No. Type j N Depth 4' ll t0PS0IL 1 SS X M 6 Loose, Brown Fine Sandy SILT (ML) S X VM Thin Seams (Al") of Wet Brown 2 S 5_ _ S X VM Fine to Medium Sand 3 SS X W 71 Dense, Pink Coarse SAND, — 4 SS X W 18 10— Little Fine to Coarse Gravel (SP) (Running Sand) 5 SS X W 19 1S_ End Boring at 15' 20— *Loose, Pink Fine to Coarse • SAND, Little Fine Gravel (SP) 25— • 30- 35— 40- WATER LEVEL OBSERVATIONS GENERAL NOTES • While Drilling 5' StarC/15/84completV15/84 — Upon Completion of Drilling Crew Chief ES Rig GME 55 Time After Drilling Drilling Method HSA 0-15' Depth to Water _ Depth to Cave In rf, APPENDIX C MONITORING WELL CONSTRUCTION DETAILS WARZYN t"al'a[uwO..C w ELEV. MONITORING WELL CONSTRUCTION INFORMATION ELEV. 4840.39 QV O JOB NO. C 400005 BORING NO. EMW-1 ELEV. ≤!. ,s;!.!..6iI11=111 $: &q a•Q It 1 11= DATE 5/15/84 0 : 1 CHIEF/UNIT ES/CME 55 1. SCREEN TYPE PVC - O SLOTTED LENGTH 8.9 ft . _ - SLOT SIZE 0.010 in. 0 _ _ SCREEN DIAMETER 2 in. _ 2. SOLID PIPE TYPE PVC - - = OS SOLID PIPE LENGTH 17.55 ft . JOINT TYPE SLIP/GLUED GHREADED) — — 3. TYPE OF BACKFILL AROUND SCREEN Coarse SAND & Natural SAND — 4. TYPE OF LOWER SEAL (IF INSTALLED) DEPTH _ _ None ELEV. 5. TYPE OF BACKFILL Sand/Bentonite/Spoil DEPTH 12.0 i 4 HOW INSTALLED - TREMIE ELEV. 6. TYPE OF SURFACE SEAL (IF INSTALLED) = None O7. PROTECTIVE CASING YES NO 1 LOCKING YES NO c, _••• O _, , 8. CONCRETE SEAL YES NO DEPTH 25.0 9. DRILLING METHOD HSA ELEV. / 10. ADDITIVES USED ( IF ANY) None NOTES : PVC Stick-up = 1 .45' — WARZYN ®® WATER LEVEL 19.79 TOC DATE 5/16/84 `N'N""'"O INC *ALL DEPTHS MEASURED FROM GROUND SURFACE. _ ELEV. d . MONITORING WELL CONSTRUCTION INFORMATION ELEV. 4824.57 lb Q O JOB NO. C 400005 o, BORING NO. EMW-2 ELEV. ≤!oi a:o;o &III=111 'j?t �Ib,77; 11-=1iCyl- DATE 5/16/84 2.;•-- - 'eft o' CHIEF/UNIT ES/CME 55 — O 1. SCREEN TYPE PVC 6 SLOTTED LENGTH 8.9 - ft. _ = SLOT SIZE 0.010 in. __ _ O SCREEN DIAMETER 2 in . 2. SOLID PIPE TYPE PVC _ O5 SOLID PIPE LENGTH 7.65 ft . JOINT TYPE SLIP/GLUECCTHREADED) - • = 3. TYPE OF BACKFILL AROUND SCREEN Natural Sand — 4. TYPE OF LOWER SEAL ( IF INSTALLED) _ DEPTH .. None ELEV. • 5. TYPE OF BACKFILL Sand/Bentonite/Spoil �i— DEPTH 3,0 4 HOW INSTALLED - TREMIE ELEV. FROM SURFACE-) '' 6. TYPE OF SURFACE SEAL (IF INSTALLED) • • . None =' - .0`.--,.%,; O 7. PROTECTIVE CASING Cf!!) NO • ;'ti_il LOCKING YES NO c1 — O ,, 8. CONCRETE SEAL YES NO 1 ;', - t. HSA DEPTH 14. 1 \=i 9. DRILLING METHOD ELEV. / 10. ADDITIVES USED ( IF ANY) None NOTES : Hole Caved to 3' . PVC Stick-up = 2.45' - WARZYN ` ®® WATER LEVEL 8.75 TOC DATE 5/16/84 `" "°`"'"o" ALL DEPTHS MEASURED FROM GROUND SURFACE. ELEV. & MONITORING WELL CONSTRUCTION INFORMATION ELEV. 4821 .59 kO SI 7 O JOB N0. C 400005 o BORING NO. EMW-3 _ ELEV. ;b' a:.o &Itt III ',:;;;!...!:;.7 :!d•R- N ic = DATE 5/15/84 It- G. ,b.: II CHIEF/UNIT ES/CME 55 `:o • O 1. SCREEN TYPE PVC _ SLOTTED LENGTH 8.9 ft . _ SLOT SIZE 0.010 in. _ _ — O SCREEN DIAMETER 2 in. _ 2. SOLID PIPE TYPE PVC 05 SOLID PIPE LENGTH 7.55 ft . JOINT TYPE SLIP/GLUE THREADED — = 3. TYPE OF BACKFILL AROUND SCREEN Natural SAND & Coarse SAND — 4. TYPE OF LOWER SEAL (IF INSTALLED) DEPTH _ None ELEV. • 5. TYPE OF BACKFILL Sand/Bentonite/Spoil DEPTH 4.0 4 HOW INSTALLED - TREMIE cEROt4 SURFACED - ELEV. ��' 6. TYPE OF SURFACE SEAL ( IF INSTALLED) —;, None „ —" 7. PROTECTIVE CASING YES NO ; - 1 O '‘ LOCKING YES NO .. O 3 8. CONCRETE SEAL YES NO 15.2 HSA \'- 9. DRILLING METHOD DEPTH ELEV. / 10. ADDITIVES USED ( IF ANY) None NOTES: PVC Stick-up = 1 .25' WARZYN ® WATER LEVEL 9.31 TOC DATE 5/16/84 ""O'""`MNOI C *ALL DEPTHS MEASURED FROM GROUND SURFACE. APPENDIX D BAILDOWN PERMEABILITY TEST RESULTS WARZYN NO,NEEPINO INC w BAILDOWN PERMEABILITY TEST GENERAL PROCEDURjS The purpose of a baildown test is to measure the in-situ permeability of subsurface materials. Baildown tests measure the water bearing properties of undisturbed, in-place aquifer material whereas laboratory tests require removal of material from its natural environment. During the collection of samples for laboratory testing, the material is disturbed and a laboratory permeability test may not be representative of actual in-field permeability. The general procedure for a baildown test is to instantaneously remove water from a well by bailing or pumping and measure the rate at which the water in the well returns to its static level . The rate of water level rise and the physical dimensions of the well (screen length and diameter) are directly related to the permeability of the aquifer material . The greater the permeability, the faster the water in the well will return to the static, pre-test level . DATA REDUCTION ,.o The method of interpreting the water level vs. time data that arise from osN a baildown test is that of Hvorslev (1951 )1 , also in NAVFAC (1971 )2. A plot of field 0.2 recovery data shows an exponential decline of recovery rate with time. If the recovery 0.10 2 4 6 8 10 is normalized to HTn (Figure b) and ratios of unrecovered head differences are plotted (a) on a logarithmic scale, a straight line plot results (Figure a) . Faster recovery rates WARZYN are expressed as steeper slopes, implying ��•�-�^ ^� moms.~ —7 1 Warzyn Engineering has developed a computer method to efficiently reduce and analyze baildown test field data. Input field data are converted to values which can be used for graphical analysis. A statistical evaluation estimates the fit of data to a theoretical curve. With a screen shape L/R > 8, the expression for permeability K is: IC = RZ In ( L l In ( HTz ) 2L(t2 t,) \R / ` HT, / ! L I STATIC DT • t HTn H to o cc t=o J L R--►I k- (b) Where: R = Radius of well screen L = Length of well screen HT = Unrecovered head difference at time to STATIC = Measured depth to stabilized water level DT = Input data (measured depth to water at time tn) Time, input as hours, minutes and seconds, is converted to seconds of elapsed time. Measured depth to water at time to (DT) is converted to a ratio of head differences (HT/HO) , or percent drawdown. These values can be plotted on semi-cycle log paper with time on the abscissa. WARZYN _. • C' c'it'•i' t,'IT•. •-•• T.CT•.•-••.y'.r,. ,a-. I- . • . . . . • . u-t 2 ID CI t.CI.,t •--••-.i'.J.N{•'! 111111111 J Tr O . -- f t • .,t C' ..T-. •--• V-, 1 Q Z •.Tl 1- '�.J .T1 W = O • . - .T•. 1--- .�,C'tit.rn..j C'c.: !,t t ii tit.�_• • ,t N H i_i i 7-- -I- I I 1 I ! I I ! I 'mot ---. Q 1- I- I •-•.. WWWWWWWWWli I • W • •f 't I-- •i•I'._ r•.-tyt tom.1:'... r--,-.t.,t t-•t I:1) O Q • . A .r,'kr'kr*Cu tit cr t tQ.,'•i.r k7.-, I -I O. • • •-•�•.-'.it ti 'S r',t •-t..-e.-•.'n! 'U..,, p W • w J • 1-_:$ C.)C Ij,' C.in i •-t.n, ICI ID'j) F-1 •"4 U > • • . • W '•i' 1:."., 1..0li. ., .T•.V-Cr-. I— I— W W • CO . ..7...10 L) CO-r lit'.:.' 'Z Q W 1— • • WW s•-•t•••I Cr:t;- • t f.i, • '- tD • I _J • i_t r_r t• • •• Cr C'CI tit a, at0 a,a.CI =1 =F- • . . F- ID CI tit C C ty a.a.tom.CI r 1.•.1 - • C. t:' C.U,•t:•J 117.1 .. .•',ter • . ,-:,f.,J i'.J.--. .--.•-. . to t . .::.tat 0 CI', •I f! ....-.0 .tom. •-•at • • -1 rr ( 1 r• f 1 • •J W •••• •-• W ••Z) iii a,.,t i;t •fit ID 11:,:.1 ID a, t,,.r.,a.t,,ty..zt II II I I :•: • •L1 I-C.C'a.i•_•. tit rte. at a,a, a. II IIW w • • 'c.-.• c.-•11 70 1:'•J'i'u-., -1-t'1•-' ' 1 1' CI t_1 r • "tit(v., ins f i f 1 i_. •id . .: a'tom. in a' C' U! • . .}- , ' .=t Tat '-•' • • 1.1 ff. 1 to-)ii. I 1 t I I.7.1 tom.II") -•1••• CI'.t i C.U-t W • •'-.•J:, W . ':'J Tr C'•1 '1- •▪.� t-,-, a, •-• tyt '-r u-.. •.▪ t-•'T•. ••-. t,-cJ Cr" trt(•-.• cr.,n U1 VI i.•J .. I1• • • •0.T-. .--t •"':•.J•1 •Jr_Cr.. II II •iii CD .. .. .. •. .. .. .. .. .. • .. .. ' 'y..M. C .+t .�'. .tittit.�'-t . . fit ? .. ....r., ' • W _'� F- _•W...t:'.J 1- • CL •-• ,-,W •-• t-4 W 2 2 •--• • •ii. i . • .. J 1--f C.K. •- J• ►_,Cr _ t=f 1 I-•0.. ii=f1••••n.1 t--• .. ix '--.0iL fit 1--1-- 0 • �#-+ I_T W .Z 1= • •.-t ••:-.• LL •1-+J I• ▪ 4* 2 I W - •-I J • - ''-. i=i••-•f'.1 0't•r Ij-.'i-'I,-t i.'T`..-' I • ' ...0t Ce ti Ix • W . • 'Z ... 4C, U.1 W C. W • • Z 2 W LL CC!et- LI- et • - .W tit: Time (Sc) = Elapsed time in seconds HT/HO = Unrecovered head difference at time to Initial unrecovered head difference WAF1ZYN If the statistical correlation is good, the slope of the best fit, or least scatter, curve can be used to calculate a permeability value. The correlation coefficient ranges from 0 to -1 . A correlation coefficient of -1 indicates a perfect correlation, or no scatter of points around the best fit curve. Permeability may be evaluated also for various intervals of the recovery data by inputting parametric values of any two selected points. The slope of the line between these points is used to calculate a permeability value. 1 Hvorslev, M.J. 1951 , Time Lag and Soil Permeability in Groundwater Observations. U.S. Army Corps Engineers. Waterways Exp. Sta. Bull 36, Vicksburg, Miss. 2 United States Department of the Navy Design Manual : Soil Mechanics, Foundations, and Earth Structures NAVFAK DM-F, March 1971 , page 7-4-9. \A/ARZYN E:A I LDOWH PERMEABILITY TEST RESULTS 1- 4E+05 WELL #: £ MW 1 5/ :34/ STATIC : 19. 79 READING CLOCK TIME UT HT TIME(SEC) HT/HO LH(HT/HO) 1 0: 0: 0 23. 29 3.50 0 1 . 041E+00 0. 000 0: 0: 40 19. 80 0.01 40 2. 86E-03 -5. 858 CORRELATION -1 . 0u0 _LOPE -1 . 32E-01 FOR- RADIUS: 2. 540 CM = 1 .000 IN. SCREEN: 271 . 27'2 CM = 8.900 FT. E:EST FIT: PERMEABILITY = 7. 33E-03 CM/SEC • ENTER DECIMAL CODES FOR WELL NUMBER PRESCRIPT AND POSTSCRIPT 2 BLANK 66=B 77=M 87=W 80=P ADDITIONAL CODES IN MANUAL-TABLE F-2 E:R I LDOWN PERMEABILITY TEST RESULTS C- `1E+C15 WELL #: E t•1W 16 :14 STATIC: 2. 75 READING CLOCK TIME UT HT TIME(SEC ) HT/HO Lt•1(HT'HO) 1 0: 0: 0 12.25 3.50 0 1 .00E+U0 0.000 0: 0: ' O 8.76 0. 01 20 2.86E-03 -5.858 CORRELATION --1 . 0010 • SLOPE -2. 52E-01 FOR- RADIUS: 2. 540 CM = 1. 000 IN. SCREEN: 271 . 272 CM = 8. 900 FT. E:EST FIT: PERMEABILITY = 1 . 441E-02 CM/SEC ENTER DECIMAL CODES FOR WELL NUMBER PRESCRIPT PT AND POSTSCRIPT 32=6LANK r'6=E: 77=M 87=W 80=P ADDITIONAL CODES IN MANUAL-TABLE F-2 WARZYN SN0.N4 II/MN0 WIC ! c C- 4E+05E:A I LDOWN PERMEABILITY TEST RESULTS , • I1ELL #: E1114 - - 5/ 16/ 34 STATIC: 9. 31 i READING CLOCK TIME AT HT TIME<SEI_) HT/HO LH(HT/HO) 5 3: 25 15. ''3 0 5.99 25 6. 31E-n1 -0. 450 3 5: - 50 14. 40 5. 09 50 5. 35E-A1 -0. 523 - 4 4: 15 13. 70 4. 39 75 4. 63E-A1 -0.771 5i 54: - 5 1 9 95 S. 99E-A1 -0.918 : j.1 . t 3. 19 125 . 36E-U 1 -1 . 090 • 5: 5: 5 12. 50 J. '_ .�. r• _• _' =:t_1 12. 00 . 59 15►�s2. 83E-01 —1 . 251 4 h — o 5: c.5 11 . 50 2. 19 175 2. 31E-01 -1 . 66 • 5: •: :=:o 11 .0n 1 . e9 210 1 . 70E-01 -1 . 726 _: 15 10. 50 1 . 19 255 1 . 25E-01 -2. 075 11 5: R: 2n 10. 00 0. 59 :_ U 7. 27E-A 129: 25 9. 50 0. 19 '229 - . l OE-1:12 -3.911 I CORRELATION -0. 982 SLOPE -3. 76E-03 .., FOR- RADIUS: 2. 540 CM = 1 .000 I N. SCREEN: 271 . 272 CM = 8. 900.. FT. E:EST FIT: • sg ' PERMEABILITY = 4. 87E-04 CM/SEC - I II I I I • I i I J I 1 WARZYN 1 APPENDIX C QUARTERLY GROUNDWATER QUALITY MARCH 1986 TO MARCH 1987 CHEMICAL ANALYSIS OF t1ATLK ' WELD COUNTY HEALTH DEPARTMENT LABORATORY 86U`$ REF. NO. / .'✓/; ', . ' 1516 HOSPITAL ROAD SAMPLE N0. -- GREELEY, COLORADO 80631 1. li) WATER UTILITY: , COLLECTED BY:/-'y / (:_ii.,,,-,... , DATE TAKEN ..;.-,---/12 ?Ley. DESCRIPTION OF SAMPLE: ( Cr.Q.PO'L -1 _SITE LOCATION: pT . pT S T W WELL DEPTH AQUIFER • SAMPLE SOURCE AND CONDITIONS: !V,in...., , 11-.Oi thA,_{ils REASON FOR COLLECTION: Qt.f rt.Ck-A- -1 M o 4 1 JRECETVED Ii LABORATORY: ' DATE 3/24/86 ;TIME 13/p10 hrs. /BY J. Y.rau?e C (DATE COMPLETED 3/26/86 MAIL REPORT TO: A T' -1 4 tiri///��v- M /4,1/ C ANALYST J. KrauseADDRESS: 0.0 70 1 W C C . ' 7 t &/q�-on- /a Mandatory Mandatory Non-Mandatory Suggested parameters Limits Results Parameters Limits Results Turbidity 1.00 NTH 11.1:••. PH 6.5 - 8.5 7/a4 1 Arsenic 0.05 mg/1 Total Hardness as CaC03 mg/1 ^ �; Barium 1. mg/1 Calcium as CaC03 mg/1 .540 1. Cadmium 0.010 mg/1 Magnesium 125 mg/1 k, • — Chromium 0.05 mg/1 Sodium 20 mg/1 lie Fluoride 2.4 mg/1 Chloride 250 mg/1 - tl -I Lead 0.05 mg/1 lams than 0.01 Sulfate 250 mg/1 .590 , Mercury 0.002 mg/1 • Phenolphthalein Alkalinity mg/1 as CaC03 -_ 1111 Nitrate-Nitrate as N 10 �- mg/1 as CaC03 mg/1 Total Alkalinity' Selenium 0.0I' , wg/1' -.. - r _Y• "bisselvled•Solid. a h t'..'500 h/1'• " to Silver 0.05• mg/1 - - - Specific Condnctanca microwhos/cw .. Chlorinated Hydrocarbons Potassium II Pesticides _ Endrin ' 0.0002 mg/1 (ron 0.3 mg/1 0.64 Lindane - 0.004 mg/1 . ' Methoxychlor 0.1 : -,mg/1 - Manganese - - . 0.05 mg/1 - - , Toxaphene 0.005 mg/1 - . . Copper 1.0 mg/1 Herbicides Zinc 5.0 mg/1 0.1 mg/1 : Oa0' . 2.4.5, - TP 0.01 mg/1 - Ansonia as N mg/1 —I Radioactivity i :. .. Gross Alpha pCi/i _ Cross Beta pCi/1 _ - ' Radium 226 pC1/1 Strontium 90 pC1/I J Tritium pCi/1 �•••; CHEMICAL ANALYSIS OF WATER WELD COUNTY HEALTH DEPARTMENT LABORATORY REF. NO. E7t4 by #12 1516 HOSPITAL ROAD SAMPLE NO m)56 17C_115 GREELEY, COLORADO 8O631 WATER UTILITY: , COLLECTED BY:P.4`C/ure , DATE TAKEN y74/4,4 )ESCRIPTION OF SAMPLE: ( CMG SITE LOCATION: PT PTttf S T K W • I WELL DEPTH AQUIFER ≥AMPLE SOURCE AND CONDITIONS: /1401.4 jag" W,it,S7 • j REASON FOR COLLECTION: guyue filitnnut. a-e ,elt~) • "RECEIVED IN LABORATORY: DATE 3/244/8 6 , TIME 1310�1hrs. , /BY J. Krauss �],/ �/� DATE COMPLETED 3/26/86 MAIL REPORT TO: t4•�) Iii &d' - /'tc lid// C ANALYST J. Krause ADDRESS: 24.1)-10, W C` E_ _ 1 ob D . Mandatory Mandatory Non-Mandatory Suggested parameters Limits Results Parameters Limits Results Turbidity 1.00 MID ell' - 6.5 - 8.5 7.0 Arsenic 0.05 mg/1 Total Hardness as CaCO3 mg/1 690 Barium 1. mg/1 - Glclum CaCO3 mg/1 - Cadmium 0.010 mg/l. Magnesium 125 mg/1 Chromium 0.05 mg/1 - Sodium 20 mg/1 160 Fluoride 2.4 mg/1 Chlor •e 250 mg/1 130 -- 1---es"d 0.05 mg/1 Lees thin 0.01 Su fate 250 mg/1 730 Mercury 0.002 mg/1 Phenolphthalein-Alkalinity mg/1 as CaCO, Nitrate-Nitrate as N '10 H/1 .. - Total Alkalinity. mg/1 as CaCO3 I- Selenium 0.01 mg/1•: .• Clssolved.Sol1E •` 500 :g/1 1,930 : 111... Silver 0.05 lag/1 -- - Spee\tic Conductance . •icromhos/cm -- 1 Chlorinated tHvdrocarbom POtiseltsl myiL 17 _ Pesticides - Endrin •0.0002 mg/1 - FOCI - 0.3 mg/1 JUndone . 0.004 mg/1 lfethdsychlor 0.1 mg/1 Manganese 0.05 mg/1 - .Toaaphene 0.005 mg/1 - . __ Copper 1.0 mg/1 1 Herbicides Zinc 5.0 mg/1 2.4 - D 0.1 mg/1 0.31 4.4.5. - TP 0.01 - mg/1 _ Ammonia as N mg/1 • Radioactivity . -. Gross Alpha - pC1/1 fl.+: / Cross Beta pC1/1 - �'�'at� _ . lRadium 226 pC1/1. Strontium 90 pC1/I Tritium pCi/1 CHEMICAL ANALYSIS OF WATER • _:.��_,,,, WELD COUNTY HEALTH DEPARTMENT LABORATORY _REF. NO.4- /V-7W > 3 1516 HOSPITAL ROAD SAMPLE NO.86055 P 17C_114 GREELEY, COLORADO 80631 WATER UTILITY: , COLLECTED BY:P• /YI CehirP , DATE TAKEN 3/xs/,r4 DESCRIPTION OF SAMPLE: ( 0rD O rL-n -SITE LOCATION: pT PT S T R --W t 1 WELL DEPTH AQUIFER 1 SAMPLE SOURCE AND CONDITIONS: /✓1 en4 1 Will/Lc , , REASON FOR COLLECTION: Qu rl it4 440 IA 4 cry I /.t lECEIVMb IN LABORATORY: a DATE 3124/86 ; TIME 1310 bra. , /By T. frames (DATE COMPLETED 3/26/86 MAIL REPORT T0: t�^A 7 1 IA t4001P- MC 1,i/ ilk .1. Krause t ADDRESS: 2-d 7'0I W C _ • F1410-1-- (-457; Mandatory Mandatory Non-Mandatory Suggested parameters Limits Results Parameters Limits Results- ,, ` Turbidity 1:00 NN �g PH 6.5 - 8.5 .. 7.3 v- Arsenic 0.05 -mg/1 Total Hardness as CaCO3 mg/1 Barium 1. :.mg/1 - - Calcium as CaCO3 mg/1- v Cadmium 0.010 mg/1 Magnesium 125 mg/1 v Chromium 0.05 mg/1 - - Sodium 20 mg/1 110% Fluoride 2.4 mg/1 Chloride 250 mg/1 • 4/1 - Lead 0.05- mg/1 Leas tb*fl 0.01 Sulfate 250 mg/1 630 L— Mercury 0.002 mg/1 Phenolphthalein Alkalinitymg/1 as CaCO, Nitrate Nitrate as N 10 mg/1 25 Total Alkalinity 4/1 ,as CaCO j-Selenlum r s •o ol".r fig/1T ‘. . •.... r ( Dissolved_ ,L!~da•.,_. 1 ti''500 +g/lV''Y 1 - •'_SS1,yer �" ,, 0.05 '6/l - Specific Condmctanct mieromhos/cm .`•_ [Chlorinated Hydrocarbons • Potaaaim saf/L •' 17 � 'Pesticides_ •� • . •�_ x2.2 �i l Lindens 0.004 mg/1 , Nethoxychlor 0.1 mg/1 Manganese 0.05 mg/lY ' ' r e $ Toxaphene . 0.005 . mg/1 t i __ ... Copper Herbicides Zinc 5.0 mg/1 2.4 - 0 0.1 mg/1 ...p.4 . 2.4.5. - TP 0.01 mg/1 Ammonia as N mg/1 Radioactivity !. Cy. Cross Al pha - pC1/1 Cross Beta , pCi/1 I Radium 226 pC1/1 _.. Strontium 90 pCl/1 _ Tritium pC1/1 .,, - t y. CHEMICAL ANALYSIS OF WATER 'WELD COUNTY HEALTH DEPARTMENT LABORATORY .tEF. NO. 18C•-211&8 1516 HOSPITAL ROAD SAMPLE NO.8613 j ///, GREELEY, COLORADO 80631 O�// f 4ATER UTILITY: E,,r ,/.., -C/ti , COLLECTED BY:04.,,i74 . -415 DATE TAKEN DESCRIPTION OF SAPiPLE: Ea . SITE LOCATION: e/_ /� • -'WELI1 DEPTH AQUIFER j •t: . :. ,: ftPP• • f �:j l • ,, .•,. SAM• .EiSOURCE AND CONDITIONS. 1 -REASON FOR COLLECTION: i-.-44.-. ' �+ _RECEIVED IN LABORATORY: DATE 7/z/�r . t,T,IME 1430 hrs. , BY Jl. Iralltl. . DATE COMPLETED'. 7/9/86' . "4t.-., _MAys REP0R .. craL, J- y /F!/mil!//.. .:. ( � ST4.. als ate ns—Y./ :ADDREISS2.a aro/..- - �G�.- -.72' '- Mandatory Nan(. ry Non-Mandatory Suggested parameters - Limbs Results Parameters Limits - - Results Turbidity .1.00 NIO P� 6.5- 8.5 Tai Arsenic • • 0:05 mg/1 >: 5ot&i Hardness as CaCO3 $ mg/1 ' Barium 1. . mg/r a".4. 'Calcium as CaCOj:.'.;-+'.w.xr'+f^ g/1' . 590) .. — Cadmium 0.010 mg/1 Magnesium 125 mg/1 - • Chromium 0.05.:-,mg/-1; - - , �Sodium - - 10 -mg/1 - Fluoride . - 2.4 mg/1 Chloride -250 mg/1 7A r- Lead _ 0.05 mg/1 . Sultan— -."--.7"-`-r-.^ 250 ag/ly. - 620 -:k•--"'--Si1�- if- ft7. QZ...ng••• i---- -vphtha..ef•oTA-,:•• t1.1 sp 4r V-:- • em..t.t�•:.: -y.w.Y.-t-J • ;; 111 crace�Nlcuu as 0.10.1r4/1.; "'a t� ?otlLkykiYtatO, wen-as CaCO3 ;Selenium t: T. '1 .0.91 [ ag/1 1 Dissolved-.Solids 500'mill : - : M :. . Silver L ti ; -0035• ag/i_ i • ?SpeyiticCondictant: alcroahos/ca -- .t• hloZnatrdATdrocarbons. __ Pest Icicles.. .. Potassia ;-.'a/L= ':9A. Endrin• .. 0.0002 wg/i �t}t .•,JrpR.- .-+, .• -"m.rtrlNM,n• po J m{/1• M.. Llndane ' 0:004' mg/1`. . -. •. . r' ! 'r ttethoxychlor 0.1 mg/1 , M _ lianas 0.05 mg/1- 0.0 - Toxaphene - -0.005 mg/1- - Copper 1.0 mg/1 Herbicide• 7.tnc S.O oR/1 M' 2.4 - p. 0.1 - 'mg/1 - oao31 2.4.5, - 7P 0.01 mg/1 Ammonia as N - mg/1 Radioactivity - - - - Cross Alpha pC1/1 } - - Cross Seta _ pC1/1 - Radlam 226 - pC1/1. . - ,• tix _ CHEMICAL ANALYSIS .OF WATER WELD COUNTY HEALTH DEPARTMENT LABORATORY ZEE. NO. iAce_'3e.zis 1516 HOSPITAL ROAD SAMPLE NO 136117, � GREELEY, COLORADO 80631 JAPER UTILITY: Zan , COLLECTED BY a, , DATE TAKEN_ DESCRIPTION OF SAMPLE: ��$l�yJ��f2 �r h-"��•��J�"�`I - 3ITE LOCATION: • �7yt,Iip"— �Y " r — dEI.1-DEPTH AQUIFER .t'' ... SAMPLE SOURCE AND,CONDITIONS -REASON FOR COLLECTION: • - �A ' RECEIVED IN LABORATORY: DATE 74/86 , TIME 1430 Ira , BY Js 'nun - DATE COMPLETED 7116/86MAIL REPORT TO: • ,� j 4ti �. , • ANALYST 47. Lranae ADDRESS 020 35/ Weir 7 g • r`° en J s34 g-D6/S' Mandatory Mandatory Non-Mandatory Suggested parameters Limits Results Parameters Limits - Results 1 Turbidity 1.00 NTO _ . . pH 6 S 7a� : Arsenic 0.05: ag/1 Total Hardness as CaCO3 1:mg/1 1400 Barium 1. mg/1' -Calcium as CaCO3:......+,..vu-n.t.Jimg/1. . - Cadmium - 0.010 mg/1 Magnesium 125 mg/1 ,:Ch roaium - . 0 05 rg/1• � ' Sodium 20 mg/1 170 . fluoride 2.4. - mg/1 . Chloride - 250 mg/1. I.40 4 -Load 0 05_'4 mg/t Sulfate.. - 250)ng/1 6n - rier 4 � h o.AiJu t . .e..._.:,r� .T � 3�i"S777ta!'!�.w..r.Ty,F �!rlaa9�l�r�t�'+7}`�. . .�i-.�'g>__ -yt p Nit.rac t smt/__1-:__.14.f''- A I 'Total Alk,iinity, mg/1 as Cao33 • `S • 'Selenium .74?. 4 Q't19d`. mg/L,, '.4 • ' Dissolved Solids - 500 mg/1 r . . - 1.9113) . . Silver - 0„fi54_11/1- i Syecific .Gondictanct micrombos/cm . . �Chlorinaced — PesticidestM191 -sL 9, ., Endrin 0.0002 mg/1 .. y'eJTmn'c x"^ f. .. "•..en .nrito.J ig/1 0.11 ». Lindane 0.004 mg/1 + 0 to _- Methoxychlor 0.9..: sag/1 - ' 11jnganeae 0.05 mg/1 - W,3 Toxaphene - o.00S mg/1 - Copper 1.0 mg/1 Herbicides - -Zinc 5.0 mail 2.4 - D 0.1- mg/1 0m37 2,1,5. - TP 0.01.. mg/1 Ammonia as N - mg/1 Rwd iewrttvi tv _ ., Stronggasoline odor Cress Alpha : pCi/l - 63 peaks aep�tr tied via p.C. Cross Bet pci/1 - ' head space ie. Radium 226 _/. . . - pCi/I - - -' - .,y ). - CHEMICAL ANALYSIS OF WATER • , WELD COUNTY HEALTH DEPARTMENT LABORATORY REF. N0. 18c_258,26 , ,1516 HOSPITAL ROAD SAMPLE NO86118 GREELEY, COLORADO 80631 � � 4ATER UTILITY: S.'+t I� � , COLLECTED BY: '.r.Nv#fir. 'w'_TE TAKEN DESCRIPTION OF SAMPLE: EMI, ..5.4r. Ce-,- L ��-fiO !'', +•----'7`7 'rt.---„if SITE LOCATION:_ 5 4..---,,--m 44y C% _ • • „1 ;.., 4,/,. , EPIji: AQUIFER ti SAMPLE SOURCE AND CONDITIONS: _ REASON FOR COLLECTION: 44L�+t,-'2-y '� S RECEIVED IN LABORATORY: DATE 71/,,86. , TIME 14)0 hrs.. ,��BY JI. Xrausn,' . . - DATE COMPLETED 7/4/86 MAIL REPORT TO: � ... .e.t v��! i74 4 J , .6��- ANALYST J.. *rause ADDRESS: j _/ r- 78•_ �j�f.-J mod4S' 4. Mandatory Mandatory Non-Mandatory Suggested. parameters . Limits Results - Parameters Limits - -Results I. Turbidity - 1.00 NTU PH .8-5. : 8.5 - pia!' • Arsenic 0.05 mg/1 Total Hardness: a6.CaC0] mg/1 - .1 Barium I. . mg/1` - Calcium as CaCO3 - ',mg/1• ' - .620 Cadmium • 0.010 mg/1 Magnesium 125 mg/1 78 - Chromium 0.05 mg/1 Sodium • 20 mg/1 . Fluoride 2.4 mg/1 Chloride 250 mg/1 79 — Lead 0.05 mg/1 . : Sulfate 250.mg/1 63o Herein^ Y4 0.002,14 i 4 J_-.yp1Shthslelm lkal{nitr„ ma_seCaCOp - ...,_ Nitrate Nitrate as N 10 mg/I ' .. Total Alkalinity mg/I as CaCO] Selenium 0:01- , mg/1., - - ' Dissolved Solids 500.1g/1 .a�i •" Silver ' 0:05 mg/1 'Specific Conductance micromhos/cm ' Chlorinated Hydrocarbons - ./1, _.. Peat is Ides Potassium ag/L - a • 'aa • __.Endrin .0.0002.mg/I - .iron 0.] mg/1 0s.17 . Lindane`> 0.004 '.mg/1 - .. O.O ' , - Mcthoxychlor-. 0:1 mg/I . Mang0.05 mg/1 Toxsphene 0.005 mg/I . '.Copper 1.0 mg/1 Herbicides - - ' Zinc . 5.0 mg/1 2,4 - D 0 1 mg/1 - amok 2.4,5. - TP 0.01 mg/1 Ammonites N mg/1 Radioactivity - Cross Alpha pC1/1 • - - . - Cross,8eta - - pC1/1 Radium, 226 • pCi/1. . . . � CHEMICAL ANALYSIS OF WATER t �- •WELD COUNTY HEALTH DEPARTMENT LABORATORY REF. NO. F:-.. r) w / 1516 HOSPITAL ROAD SAMPLE NO. 86172 CREELEY, COLORADO 80631 18a..723:73, Inn AOn (IP// , COLLECTED BY: al ill Mr- . DATE TAKEN 7/4S/6 DESCRIPTION OF SAMPLE: / a /!D SITE LOCATION:_ Al ID in -e-/ WELL DEPTH AQUIFER 1.� / SA}SLE SOURCE AND.CONDITIONS: ' l l b h 17 .0r•- W B/f 4 REASON'FOR`COEtEC3t9N +.a � ttri r • t t• T`��'►""w RECEIVED IN LABORATORY: DATE 9425/86 ;., TIME 11430 hrs. , BY .Da Lrs1lat. .: . c r DATE-COMPLETED 9/30/86 MAIL :REPORT, TO: �� o. �Q,,[L� 1 w[1i/l 't f /gyp / / ANALYST 1. Krause ADDRESS: 010261 * wce //1 yl 66` ,-.. Mandatory • Mandatory. ' - Non-Mandatory parameters- -.r Limits Results - P . . -- Limits Results • _ Turbidity .. 100 . erg..: 8.5;- , . . . .,7.2 .. v . l Arsenic 0.05 mg/1 Total Hardness as CaCO3 mg/1 `''l c " Satimat 1?•:_. mg/I'• ' ' Calcium as CaCA5 •",mg/1' - ` ) • Cadmium 0.010- mg/1 - Magnesium - 125 mg/1 44fl "Chromium 0.05 mg/1 Sodium 20 mg/1 yPluottde 2.4 mg/1 Chloride - 250 mg/1. - WZ Lead t >' 0.05- mg/I Sulfate ?SQ ..,�, ;.,w�+.•-..-- • - .m..j...Jar.+.r...�..�s' ...-.....T-......�.-.......:� _. 1 _- . .-.._y....y+w•.� �Mr rg/•1.-f- '7•. ..-.. J45Epr # 41• 0002 mg/1 - • Phenolphthalein Alkalinity mg/1 as caCOy Is 4 Nitrate_Nicrate�'sas /1 10 'ag/1 .:*Total Alkalinity :amt/1 -as C.C j .1 - Selenium .=Jet O OI ;- mg/1<. Dissolved Solids' 500 mg/l ' lttw&i ,• Silver •Y' 0j95 mg/1' 'Specific Conductance ! microahos ca • , CAlor lnated Hydrocarbons f ,.-.,__/ - ... Endrtn ,0:0002 wg/li' - .. - •Iron 0 3 mg/1 Lindane y _. 0.004 mg/1 - . .�. . — Mechoa •10 0^yt�l T":."...mu' 0.1 � mg/1 .. Nang O.OS -wg/1 _ Toxaphene -0.005 mg/1 - - Copper 1.0 mg/I. . . Herbicides. • Zinc 5.0 at/1 .. 2.4 D 0.1 mg/1 2,4.5, - TP -. 0.01 mg/I - . Awmonla as N mg/1 - - Radioactivity Cross Alpha ,pci/I - Cross Seca pC1/1 - L.. "21n. - CHEMICAL ANALYSIS OF WATER /)') -th WELD COUNTY HEALTH DEPARTMENT LABORATORY ^ i REF. NO.J( 1 IA] ! 1516 HOSPITAL ROAD SAMPLE NO. ' GREELEY, COLORADO 80631 - 861¢3 WATER UTILITY: c_e f r.i;*tam AN , ,COLLECTED BY.: I a .m.„, . DATE TAKEN f/8 6 DESCRIPTION OF SAMPLE: - /�a lion - SITE LOCATION:---.— •/ /P� - S "'J WELL DEPTH a rt s • AQUIFER • ., - • is r . SAMPLE SOURCE AND CONDITIONS: :' & 1 Ok tutttkt.'�it1 A - 1^- e• ntt� . �:' +r l ..N.,.. -s LJ e.. RECEIVED IN LABORATORY: DATE 9486 , TIME ZOO hlva , BY�/aDa Krause y.. . •SATE COMPLETED 7t7 �► MAIL REPORT T0: atielatnd h fn� -/ / c/ 1l'�(/` // ANALYST J. trans ADDRESS: �n 76 I �/� C ! R• Y �(O • Mandatory Mandatory ... Hon-Mandatory Suggested parameters' Limits P Results - - - � Limits -. � Resaits ` ^ Turbidity - 100.. NTlito4 . . ..... R ✓.i:.wKk..+rt..R4 6.5 - 8.5 .7 a t +, Arsenic 005. mg/1 - - - Total Hardness'as CaCO3 mg/1 `k,. N066- _ > Barium 0 1 -t mg/1' - Calcium as CaC05 - ,mg/1' - .730' • Cadmium 0.6)0 `mg/1 a . : - Magnesium 125 mg/I ' .Chromium 1).05 -mg/i Sodium 20 mg/1 Tluor'lde 2? mg/1 _ - Chloride - - 1 Lead• t 0 05 mg Selfsfe. < f'4`P1t'Yt ;% 'l'•-,Lt•'60022.Pt f Tbenel btlta efm ialtalinit .n ^+ra ." '� rq 7t. ,y y r ...; � P ..�' Y �/1 A. GC0j .1Y ,►+S1Yace N MP .m./ 7'-Y'k � .. ,e LK."4 ,,:'. kM+St x �- 1P `.of.t: .a i....K tai Alkalinity wg/I as Csb01 , Selenium ` L .,�r� �tmg/i v `Dissolved Solids 500 mg/1`'• _.1 F. • < :FIT: ' 7 xIr."- t: 3 a "1 . •liver in" •. mg/1 :1_ t3I;3 4 . i'i1pecific Cnndutaneb` t microwhw/cw . . • • Chlor lnatcd'Mvd rocarbona - ii_Yn'La/d1v Oj/L -1(i: • Peatft ldea . t + G•r . ._Endr in - �A 0002..mg( e•-. w-.— a. "' (T�"A'iM ` - '•g�t • Lindens 0.004 mg/ "-1" "..nr era•-?r'fa•X^f R 59-.Methoxychlor<V"�0.I. _ mg/I, T5 '. • '. -n'24nR E 0.05 mg/1 0'^ Toxaphene 0.005 mg/I - - - Copper 1.0 mg/1 Herbicides /int 5.0 me/1 ea° : ... 2.4.5. -.TP 0.01 wg/1. -,/iwwonla.ma'lt wg/1 ' :rots Alpha pC1/1 ` - - :rasa Beta PCi/1 :. Radlu�i-226 - - a - _ . - _ -.-.. .. -.'` ..y_...._r-Mme•....�'/...� r ..i �r ^ Ina'. ---1•11,-•.;:‘1: 1. CHEMICAL ANALYSIS OF WATER ' fk WELD COUNTY HEALTH DEPARTMENT LABORATORY j NO / l v ' a 1516 HOSPITAL ROAD SAMPLE NO 436174 i 1.; GREELEY, COLORADO 80631 18C-76a7 WATER UTILITY: --,}v xi-o„ r 424// , COLLECTED BY'g/ /'z fi otef, , DATE TAKENY/a_ ,//RG DESCRIPTION OF SAMPLE: f . . F SITE LOCATION: S rorn • c. _ - WELL DEPTH AQUIFER SAMPLE 'SOURCE AND CONDITIONS: • . // /y� - 1 COILELAION: ql�a e♦' /y 9`/ ! » U � ^ s RECEIVED IN LABORATORY: DATE 9,25/86 , TIME 1630 hrs• , BY d• Xnun :!....,..4i....;t. e • -ABATE COMPLETED 9,30,86 _ ' ,MAIL .REPORT .TO: ,/,,,,, �a„ J� - 19� • e�l•1 71' / /^ / r ANALYST .t. Krauss ADDRESS: /?6201•IL)GI!fiC !n 8 4 7L. '6/h 1"' .mandatory - Mandatory • Non-Mandatory Suggested' z:' F •Raramet era . - Limits ,y} Results Parameters - Limits -.0 Results`."• " Arscale 0.05 mg/1 Total Hardness as Cac0 - mg/1 ' -4111°113D . • ga fm 1..:. mg/1' Calcium as CaCO] , ,mg/1' - i '"e5 -1 Cadmium - 0.010 mg/1: - Magnesium 125 mg/1 '6 _ 'Chromium 0.05 mg/1 •Sodium � 20. mg/1 ' :�'�0• 77 . 9 ...:±..,ii.-. :i..1tf.11:rw-.H-. : 4. i.ey -a, c • . 1 :s r e ` . �. Fluoride ,2c6 mg/1 • Chloride. 250 mg/1 +• 6 itx0 b02 Ili it 1✓ ' - PheNwlpfi lean Alkallpltg]°F'NaGafb w.1:.>I y Mt •Lat! J1• a$% ji Nylo 19 j ta1.Alkalinit - ' ��s 1 ". ..{ _ ( t ' �1^"` eTll4SUI f▪ '_ i^„30 qh "" .- Dissolied Solids •300 mg/1 - 100 silver "., 0 , mg/1 rev . .Sp citic Condictanct . oiero hos/cm "'-' -t)ilorinated Hydroccaarbons _V ' - - / •� :Pesticides'::i asw: J=•• '>•.i'.a xi . . QtYahlit "41.11 '1;../r1--.. • ate. . . y Ends in ' 0.0002 •m' o*f nil. r ". 0 3 ta /i �yt,•Llndatk ....lei; Ina-mg Y'- � ,Im > i,:< r -..“tag _'Nethozychlor 4' 01.r mg/1 .j • '•'Nang 0.05 mg/1 " •.tozaphene ,.r- 0.005 mg/1 .. '_ - - "' Copper - 1.0 mg/1 •"Herbicides 0, - • Zinc 5.0 w/1 1 Lk3 7P - 0 OC ,alg/1 -' Ammonia as N mg/1 • Q►0 ' Cross Alpha ' ' pCf/l ' ' • Cross gate pCf/1 ,. srrnnttur orv. - -' t • CHEMICAL ANALYSIS OF WATER • - 1��•) ' WELD COUNTY HEALTH DEPARTMENT LABORATORY UiF_ j10:'rA 'W 1-I 1516 HOSPITAL ROAD SAMPLE NO. 88 GREELEY, COLORADO 80631 190••28A.2%_ 1-11/ /( / �v1TAKEN ^ / / -DATER UTILITY: pn IanJPI// , COLLECTED BY: 1}/ f /;/let- , DATE /.,[/3yr6 .DESCRIPTION OF SAMPLE:' " //J /lO c n_ . SITE LOCATION:_ N. 6.4 iC, II er- -'.TELL. DEPTH -" AQUIFER r • SAMPLE:SOURCE AND CONDITIONS: risen,/y�On.ft,v. LJ J/t _BFASp$ . LLECTI0N: . Q,u.arier 6 won a≤nri.,� 4 "A. .-t, _ y,. ^ �l J ter' , - RECEIVED IN LABORATORY: DATE/9ktk a TIME IS/� , BY/�j2 _ y- yy .. DATE COMPLETED: _ MAIL. REPORT TO: iaipn 'LanIC..'ld� - ril4( 'i,IJ/rci+v tn, - J` 4' S b% ADDRESS: ao 2o/ -WEE 21 geL'arj (AL 706 if } ANALYST �'�`f/-. - Mandatory Mandatory Non-Mandatory Suggested ' parameters - . •. ' .Limits." - Results Parameters - Limits - y-,-Results.-' Turbidity 0 :NTU - . PM 1.0 - t _ 9 J Arsenic r , 0.05 ' .mg/1 ' - Total Hardness as CaCO3 '>mg/1- - H• Barium 4•. mg/1- Calcium as CaCO3 ,ag/1' - I� Cadmium - ;0.010 mg/1 Magne;lua- 125 mg/1 933 _ Chromium _ -0.05' mg/1 - Sodium F1.14"4"rtj::1+�rJed2.4 mg/1 Chloride 250 mg/1 - Lead ' s 0 05 mg/k Sulfate a - ZSO ag/1, S, Mesa f.,. 0.002).Y4/1 - - " -PPhenolphthalein Alkalinit •7ig/S as.Csi: '5 ''• s.7.-:"14.4. 1.4."."4 1 1..a•.+mw. :5• •^3F 11.• _ er'C. ' ac . • �Nicratn- ittac 110: lag/1" • . Total ASkalinity stag/1 as kaCOT • . p.." Selenium �':,. ,0 O1T sag/1." - ' Dissolved Solids' ' • .500 nit/1 : Silver w ../..):5',./,'20.OS .. pg .-Specific Condactanet microahos/em ..«« - 1 • Chlorinated.Hydrocarbons '- Potassium ;^aw - �'-• _ - Pesticides -i Lt;: _ ,s End In . 0.0002 mg/1 - - -Iron 0.3 ag/1 0.87 A Lindane v° 0.004 :mg/1 ttechoayttlor' %0.1 -mg/1 •...?fang '' 0,05 mg/1 - Tollso. nfR,, 0.005 mg/i - x+-. 1. Copper 1.0 mg/1 Herbicides -' zinc 5.0 5.0 mg/1 - 2.4.5. -TP' 0.01 mg/1 . . Ammonia as N 105/1 ' Radioactivity _ Cross Alpha • pCl/I - Cross Seta pC1/I Radius 226pCi/I. Cr.-,.,.. . - em U . .1 r CHEMICAL ANALYSIS OF DATER WELD COUNTY HEALTH DEPARTMENT LABORATORY ' ZEE! NO.- e' t(,)' ,2 1516 HOSPITAL ROAD SAMPLE NO. GREELEY, COLORADO 80631 86189 190.3 11 1 /�l , COLLECTED BY: q/ /1� /lef. DATE TAKEN /2/3,476' -aATER UTILITY:'�aLo„ Alan �33.. - DESCRIPTION OF SAMPLE: //0.n.2 /ha -- - -/ - ( / - - U ;ITE LOCATION: ,"lie . S6 , ila . . . 14ELL DEPTH AQUIFER . SAMPLE SOURCE AND;-CONDITIONS »� r r • 1 /YJ • REASOR FQg •QOLLECTION: ()ILA_r L i& f o rt / /e1 i v y 3g =-RECEIVED°;IN" LABORATORY: DATE Ja /fO, TIME /67C✓ , BY DATE COMPLETED 21$/C?? MAIL REPORT TO; La//n�� )La.,rcl-c '/J ./ %e ,//.f-itr... ANALYST a *alum, 4; sal skit '. - ADDRESS: S/�0�0/ Wale. /8'tra n; GA/5 .gi0‘/.h Mandatory . Mandatory Non-Mandatory Suggested parame tars Limits Results - Parameters Limits - s- -. Results 3 Turbidity- 1.00 ?ml - PR 6.5 - 8.5 V.0 Arsenic 0.05 mg/1 . Al•t�r,w, •Total Hardness as C+CO3 ;`- mg/1 `.0913 - - - Barium , 1: . mg/1' Calcium as CsCO3' ,mg/1' ILO. • - •Cidmium •. 0.010 mg/1 Magnesium 125 mg/lrr Chromium ri,,O.03. mg/i F -t r Sodium ' 20 mg/1 140., _ j• .- .Pluoranlit + '.-i'. ..2 4 mg/1 • Chloride - - 250 mg/1 :. Lead �. 0 OS mg/k : Suliace 2S0 mg/1 y rapist-or .aL Sfl .. henolph Mlei .Al 1 1 as xaCO3 +•4 + - ry♦ d y . . _.- .. er ;,x r tar,-•f•...e i ?ot,t3-A kallnity - . .�1 s ins 4W3 4 " / Selenium, . � 01 01 mg/1' I d , DSssolvfd`Solids.. '500 mg/1'".` -:1 �.. . - 1 ti Silwe 7t_ OS� wg/1 - Syeciiic unulvctanc: micromhos/cm - ! • 0%12...lusted. - . .:9_41t:5) iwmitgms. C:' .'�t ,i2 Pesticides - - - - - - _ > End rin � 0002 mg/! :' Iron 0 3 mg/1 q t, LknQane .. ., 0.0i*_!VI. - .., r ..«..... in• t - r ...:14 ,, ':•5 Mthosychlor:- ,. 0.1 .' mg/1 . .. „ :Meng -:,_ ' 0.05 "el A .i t .MR.1l9. :,,)• ,..0.005 mg/I . . - pi_ ! h _ 'Copper ! 1.0 mg/1 . ' Herbicides Zinc - 5.0 mY./1 0.1 mg/i - ; - - OA • - 2.4.5. - TP 0.01 mg/I • Ansonia as N mg/1 ' Radioactivity • Cross Alpha pC1/1 Cross lets pC1/1 - - - - ,.1 Radium 226 - pCi/l. - • • 's} . CHEMICAL ANALYSIS OF WATER WELD COUNTY HEALTH DEPARTMENT LABORATORY :IF. NO. Mid! 3 . 1516 HOSPITAL ROAD SAMPLE NO.86190 •: 1 GREELEY, COLORADO 80631 190M0 ///� //�� -DATER UTILITY 1L ! ird/ COLLECTED BY: t1/ .//C/ • , DATE TAKEN%Q/��X6 ..DESCRIPTION OF SAMPLE:. • .. . .. ITE LOCATION: S. g /corner -JELL DEPTH AQUIFER + .. ,,SAMP1 Z,SOURCE AND ;CONDITIONS -.4;•-.17;•. c 1 . Ix //1� l . = -REASON FOR COLLECTION: SY,L /l r ee r I,{ • D n j �'l°1� s • RECEIVED.IN LABORATORY. DATE)'3 Inr 4 , TIME / 7 .. , BYYn .'9 • DATE COMPLETED 1181117 . . MAIL REPORT TO: E,_fo,s'h0KJ411-1 / r,p �n yi •ANALYST ;4 •a� 5 "t .ADDRESS;. an ool Loa. _:, , CD YO, BC?:/ r.• • •-- Mandatory - • .17andatory - Non-Mandatory Suggested- ' parameters 4 .Limits Results - - Parameters - Limits - 'y- Results - turbidity T' :1:00. "NTU - ..PNi.: ;.65.'-- 8.5` • ::.{.l- Arsenic 0.0D• ,!g/1 - ,-.tpptal Hardness as Ca00 ,, mg/1 '`'930 ' - . Barium 1, mg/1' •Calcium as GCO3 .mg/1`- .Cadmium p.op mg/1 Magnesium 125-mg/1 ITS Chromium ' 0 05 `;s$/}__ a • Sodium s'i Y:. 20 mg/I .1 O . . Fluoride ,! ;R.4 mg�l • ,• Chlorite 250 mg/1 I 75 - Lead+ ' V mg/1" ,;Sulfate' e. 461,250.001 . 5. 50 e . -Mercury 4 rag 371 Yph lain Alkalinie 1 aR cocoa - n s "Nltt7Lew Toin A keinity` ' 1 as'CaOD5 i ' Selenium,+\, `.it 1.} M l '. agill `. I t4 -+./D11a0Iyed $o11ds . .500'ag/1,/' :1,520 - 1 -31 1Yert a w „•'M 05 mg/1 •59e5J[ c,c id ictancn wtfroahoa/cw �. . a l • '.ice t y f � Ch4erinated.Nvdrmehridlis ' -c -.1•4.....:- .1a�__sa,._ •7 e -.':!:113::,;6:.1/4"--.:;::.-:..:'. i 1 Pesticidef a•r, • ,:4'Air o-End rin ,iq.zl x D 0002 mg/} v ;,:Lindanf i 0 004,.'-ag(,1,r ��yw 7 q, t \ rTw• . Mechoxychlor '=1 ,b,l r.•mg/l- - R •':- .' A 4xl4nganess i.i.1:,: i"ri 0.05 mg/1 ' Toxa phone 0,005 mg/1 ` •. - f Copper • ,,.t • 1.0 mg/1 L • Herbicides - - :.: S.O mg/1. __ Q.4 D 0 1• ?': wg/1 ' ' • 00 . 2.4.5..-JP: 0.01: mg/1 Rmwania as.N - mg/1 . Cross Alpha pci/1 .'.> Cross Beta pC1/1 Radium 226 t pCl/1. - - I. CHEMICAL ANALYSIS OF WATER 11 . 1 - - 7/ g /Jt WELD COUNTY HEALTH DEPARTMENT LABORATORY REF. NO. / � . yY 1516 HOSPITAL-ROAD SAMPLE. NO. 87�r ' CREELEY, COLORADO 80631 19c-9 / ) /1 �j WATER UTILITY: aiM1'11,)0., d-k',J/ , COLLECTED BY: g / / i//e .^ , DATE TAKEN 3-3 /-87 DESCRIPTION OF SAMPLE: /JO HOr .. . • . - . , - .. - SITE LOCATION: hi id rota twit• `` . -WELL DEPTH _ AQUIFER SAMPLE SOURCE;AND CONDITIONS: /Inn , ]mod:.. Cut, as • _ t—SEAS ,F0,.�COL llION. it t. .'f'ln of•? nC, � .. _ 12ECEIVED IN IABORATORY `tDDATE.3-31-X7. , TIME ,233Q , BY 94e • DATE COMPLETED . .Iil3j/JtW M}AIL REPORT';TO.." j� 4a P,d/ Pica /X AN,41ST. (1 J• Krause ADDRESS: -a? 20/ IA) 98 FLa,. to/ :R a tog/.2, i . ,. . . >, Mandatory Mandatory ` in �_"aon findVtiti t,,.•t: Suggested parameters Limit. Results 4 •.. r Limits 'Results . X Turbidity ' 1.00...E NTO I'H . ..7..yt (� 7+A Araeatc 0.05 +B/1 - Total Hardness as.CaC01 mg/1 ▪ Barium I. . mg/1 Calcium as Cac03 . .mg/1' . .. - ' ,V.- Cadmium .0.olo mg/1'. Magnesium - 125 mg/L 71 '. • Chromium - 0.05 mg/1 - Sodium. - 20 m /1 •., 110 -✓•'. - B t - Fluoride_ 2•4 .mg/1 - - Chloride 250 mg/1. - 73 -•lead 0 05. mg/2- •i . Sulfate Sulfate % , : 4 ' `..S' "7 w. e 44 .."-.. ,F , PAtIk1,Y4 "2.1-#$S0i It #�( - A .7 . '? N1trate littate as H 10 , mg/1 a , �` I.mQ r r- " Total AlAI ifnip amg/1 ws CaCO 7 Selenium 0.01 ag/1 - ' Dissolved Solids 500 mg/1 ' 4 Silver I ' 0 05 mg/1 •Spec if lc Condactanc_ laic romhos/ea - CRIoUnaced Hydrocarbons ° `" +'� ," {` Endrin 43.0002 mt/I .iron 0.3 mg/1 r Lindens':'" .0.004 mg/l. ' - - - r_- Nethoaychlor • o.1".- mg/1 - Manganese • 0.05 signsign0.0M 0.07 - Tosaphene - 0.005 ag/I - . Copper 1.0 mg/1 ' Herbicides - . „ _ ltnc _ �^ 5.0 .l./1 • 2,4 - D -0.1 • ag/1 'i ci- +w a•. 0.05. 2.4.5. - TP 0.01 • mg/1 Aamonla as N mg/1 - Radioactivity - Cross Alpha '':"OCl%i ._ - . Cross Bets . .' pCi/1 ' -- .4 Radium 226`" - _ ' CHEMICAL ANALYSIS OF WATER . . / • . • - WELD COUNTY HEALTH DEPARTMENT LABORATORY ` - , REF- NO_ M 1516 HOSPITAL:ROAD SAMPLE:'NO:87052 19C-100 11.01 •GREELEY, COLORADO 80631 WATER UTILITY:ge.,(i; . ri Jrdi , COLLECTED BY: p/ ./ /,'//e r , DATE TAKEN 3/_ ?2 DESCRIPTION OF SAMPLE:p), .:1(1./e,// _y_ SITE LOCATION:_ -- �it-o S t S/ d i L .. , • WELL DEPTH AQUIFER SAMPLE`::SOURCE AND CONDITIONS: • p/„; Z or 60,0:1,_5 ay li REASON FOR COLLECTION c/ ,TJ\� 1 ,,^r/,[ t — RECEIVED'.IN L ABORATOkY `•:HATE 3 3 f-l7 , TIME 1. .133Q • • , • BY (?-.01 • ! vv ' DATE COMPLETED ,413/11'7 / MAIL RE)l :,�E ORT TOooLn.,, L4 K 114•/i- m IA)/Xn r ANALYST J• lime ADDRESS: a6 ?QI &JCR ?S tcdcni Cho' 8'o6 , • Mandatory Mandatory Ir!'t3 ' ,"Non 14igditor "r" - ammeters Limits Results "ill,v' y ^v+ • », Suggested'. , • +� `. 'Parameters -,�S Limits Results Turbidity 1.00 NTU - PH - 6.5 8.5 • 74 ✓ Arsenic -:v 0.05 •mg/1 Total Hardness as CaCO3 mg/1 1X060- ' .1 s Barium 1 mg/1' Calcium as CaCO3 ,mg/1' 0o - Cadmium 0.010 mg/1' - - Magnesium 125 mg/1. x .90 ./ i Chromlw 0 05 mg/1 Sodium 20 ng/Y 1 ..,�:- Fluoride. 2.4 mg/I • Chloride 250 mg/1 a5 ✓ - •j Lead 0.05 ng/1 ,Sulfate '�..,.�c�',�0'�ppK �a IC.1 's -:.fl+ 1Ph.C{isle v ..fJ T '9':'t:'•27*e" ".4".26,47.;:,.► -.-a Nttta rete as N 10 /1 ✓/* " Alkalinityk : 400 ✓. g Total Jmg/1 as CaCO3 { SelenSw O Ol mq :),0lsaolved Sol fda SpO.mg/1 -- 1„ 00 ' Silver -;q 0 05 mg/1 - - 1 1 _ Specs.1c Cnnd utane micro.hos/cm Chlorinated. Hydrocarbons .�,.tr R s " v ' ' :;•:',. ' 4 :...-1..t,...,.'... ,.... v'i'+ a `. r' 3A 1. r .-../, ...:. ,:;,.. r .''.l Pest lcfdes ^• �' '',' - '�'" �tii�ili :`r jl v . . ' .1�, - •./:: i �. _a Endrin 0.0002 mg/1 '•Iron ;12!:•; '''.' '0:3 mg/1 . . 'D : 0•S). Lindane - 0:004 mg/1 " - hethoaythl6r "0.1.:. mg/1 Manganese i 0.05 mg/1 'S 'leakTosaphfne . ."-0.005 mg/1 - i Herbicides' • ,Copper 1.0 mg/1 '-_tir'" - r. .0:1 - mg/1 �Fr id . Zinc ,.•vr.%+ i4IJ10 5.0 V/1 . . 12.4..5 TP 0,01 mg/1 Ammon is as N mg/1 fla3i Radioactivity Gross Alpha pci/1 - 3". } ;Cross ;Bea .c` - pC1/1 ‘ �- _. - - - Radius 22g "ur pC1/1 - .. : / CHEMICAL ANALYSIS OF WATER— `' - WELD .COUNTY HEALTH DEPARTMENT LABORATORY REF: N0. fes Mitt, 3 1516 HOSPITAL-ROAD SAMPLE N0.8705) CREELEY, COLORADO 80631 WATER1UTILITY10ki6 iaj 141/ , COLLECTED BY: 9 / P/,/Ier , DATE TAKEN 3-31-k) DESCRIPTION OF SAMPLE:c -. . . SITE LOCATION:, S g. -,04: V..a 4 .i` WELL DEPTH AQUIFER t -SAMPLE SOURCE AND.CONDITIONS: '/✓/D n i Lo r t, t .:; n . . , .41 REASON FOR COLLECTION: AAd i^i¢I`/ti . Non/:de ik /J Jy� "t;. RECEIVED IN LABORATORY: DATES_3/- 8 7 , TIME /33Q �, BY I ^i(,�,��y itti (/�/ -� DATE COMPLETED, ,4/3/87 MAIL -REPORT TO: Elea n F.ta., d t/ /1 ^ ! -1' , I 1 rl . - ANALYST Ja !mow ADDRESS: : ,9Q C0I1.ur k 9 irH Cie Ro j s��' mandatory Mandatory Non-Mandatory Suggested `r -` parameters .'Limits- Resultic - Parameters _a, Turbidity •r l.00 'NIB PN _ 6.5- 8.5 §5i• Arsenic 0.05 agI1 Total Hardness as CaC01 ag/1 - Tam- ' Barium -_ - "1.- mg/1' Calcium as GC01 ,mg/1' ' 610 ✓ Cadmium 0.010 mg/1 Magnesium- 125 mg/1 71 ✓ J Chromium .0:05 mg/1 a. Sodium 20 mg/1 : -:"11e ✓_ • . Fluoride • 2.4 mg/1 Chloride 250 mg/1. x'78 t•-/ . .::J Lead _0.05. . mg/k Sulfate - 250.mg/i ..S7o —� - ci£ !ustfr /..:! �/t.{ -u*-------01-4 t+.i! Ir!id*M katvitilia,# 'C(! .,°c�' tr .•- ---—•i Ni/race Nitrate as 11a0._rwg/1 18 "/ Total'Alkalinity - t.ag/i as GCO3 _3s '� : fff - Selenium - 0 01 ag/1 - ' Dissolved Solids 500 mg/1- ! - 1,500." '• • Silver O 05 mg/1 ^ i i Specific'Conductanc: - alcroahos/ca _ Chlorinated Hydrocarbons. _ Pes[ie ides'= . .. J Eadrin ' X0.0002 mg/1 }J ron 0.7 .01 Linden. - :0.006 eg/1` Methoxy'chlor- '0.1 -'. mg/1 Mang 0.05 mg/1 - .0ah 7oxaphene 0:005 mg/1 - - - . I .Copper " - 1,0 ag/1. Herhlc ides - - - ,, .i zinc-:. .5.0 mR/1. . 0a"2.4.5. - 1? '' • :+•0.01.•'mg/I lar.onia as N mg/I ..k • Radioactivity - Cross Alpha • pCi/1 - " . Cross Beta ::pCi/1 Radius 226 •oCl/1. APPENDIX D VOLUME CALCULATIONS WARZYN ENGINEERING INC. MADISON, WISCONSIN BY 17L--E-17L--E- DATE_7''//Z87 SUBJECT \IO Ut' GAS--a-i- I-A. 1 Ic- t IS SHEET NO._ I__OF 35 CHKD. BY $a'DATE 7780/87 E OToti1. l-r�r_10=1 ' JOB NO. Sat el Co 1 111\E�1•■s=i��ils =�: Ic! - o ■ n-.L2 : ::::_ � �illi ............■.. . .. 1 �il■■■■■nn ll ■■■■■■nu ■uuuu ■ it ■■ ■■■■■r hi -111 - -� �� :� ■■■■■� 11 ■■■■■■: :I a�'liil i :...i Cr? 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Y -.S - H 1 1 s. - it . : aot°po_LipJ 1C.�(i ' I "J z;-oo� c.i( _ 1 � I 1 1 L Ii 1I- I I 1 1 1 � � � 'I. '; i 1 is- ,I WARZYN ENGINEERING INC. MADISON, WISCONSIN BY 3 P W DATE 843/4'1 SUBJECT_ Lo innc C' Al cal )L2CT(OT' S SHEET NO. z OF 35 CHKD. BY StR DATEL3/5/8n e-Kto 1 -['siJt AL-t- JOB NO. r--,C tact ■■■ L1 ■ ■ ■■■ ■■■■■ ■ ■ ■■■ ■ ■■■ ■■■■■ -■. :::■■ i� �:ice ir■rz=■r- ��a ■ I _ , ,. ■r.. ■■�■■T:-■■ ■■■■■■:: _ :■u■ ::I�iir■i�ii i:ir.. iu�s ■■ ■■■ ■ ' ■ ■■■■■u■ ■■ ■■■■:a�. .�. .�r-w■c r it r.. ■- ■■ ■ ■■■■■ ■■■■■■■■ ■■ ■ ..... 1111 1 !:�; 1 111 11 _ i1„ ��;lil" ;! !;!1_ _1 ■ ■■�: C ■ ._,4u■u 1 } ■_11111111 - 1 I ;1;11!h1n ::::■■:: fl.u....0 .n i -Ai ■■ ■i■ ■■r■ ■■ ■■■■■■■■■■■■■■■■■■■■■u■■■ ■■■■■■■ ■ ■��■■■u�■:ri■■■�■■��I■n■�■■■■■: ■ ■■■■■■■■■■■■■■■■■■■■■■■■■ :::::::1:!:�'��L' i 'ii :-ri iiii�!i_i� �i■ :!' ' ' '-: :■i! 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I i III i �_ ' � i. , I , _ .. 1 , , i ,I i -:{If ' 1I ' _Hi _L41 I H I I ' 1 { I I , I ' I , , � . , ; - 11 Iii11 � � � { 11 H Ir - � I ' I I ICI I .i u� _ I ii r , l : I �..1_ _ j t 1. - ll� I .I. � i , i1 , LI { LH ; I I jl : 111 111 J 36 USER INITIALS: . ,r ,mot.. ...F _:�:_.�-. 1.,J'�. r .ci-:L_.;:., ;..,:...; !.:('r t .... ... . -- •i ?iF='ROt.rECE INFORMATION;: =r.l:i•;.r.TT;..;;._.. _A :.:.:"-•; ,.)r.1 ; �.�.:. S=RUJE:.i: . i(.'ui (_: , EATON i..f•=!ND f1^.i... HOR . ="--•`I't._E ;f-..;..i :`•!: 4 1.00 rt.;:1iER: ::.0 r-. . ae!... ,r.L - rte...,_ ; .-,r, "!'t•:_�:.., ..... i ,,:�.t: !A.}�=t .. ..t,_ ..-f ti:3. (_):.� v�.I". �.. ...,_..Y•I .._ .. t !� .., ii :r ! .. ^ PRECISION(.:) •:.r t) AREA 1.0., ; FILL AREA r + 11195 • • AREA 553 r r t - �'•- :r, r :rj • 4 : V-CDE— irsIE S Y ARE�'i CAL.CLIL.A'Y' =ONE ,. �j WZA.RZYN ENGINEERING =INJC _ PROJECT: EATON LANDFILL CONTRACT NO. : 50196 DATE: 7/28/87 BY: DLF COMPUTATIONS FOR : TOTAL AIR SPACE - SOUTH FILL AREA (p44,,e.� c- i+) SECTION STATION DISTANCE AREA VOLUMES (FEET) ( SQ. FT. ) ( CY. ) 1 0 0. 00 5 168 2 5 1 ,818. 88 20 2, 785 3 25 5,699. 63 115 24 .434 4 140 5 ,773.95 25 5,945 5 165 7 ,067. 22 50 13.349 6 215 7 ,349.91 45 8.910 7 260 3,341 . 51 20 1 .263 a 280 67.46 5 6 9 285 0.00 THE VOLUME OF SECTIONS 1 THROUGH 9 IS 56860.05 CUBIC YARDS COMPUTATIONS FOR: TOTAL AIR SPACE - EAST FILL AREA (p4 s /5.- •a4) SECTION STATION DISTANCE AREA VOLUMES (FEET) ( SQ. FT. ) ( CY. ) 1 0 0. 00 5 212 2 5 2,285.27 30 8.399 3 35 12,832. 52 165 77. 101 4 200 12,400.68 25 9,007 5 225 7, 054 .03 13 3, 135 6 238 5,967. 82 27 4 , 107 7 265 2 ,245. 51 20 877 8 285 122. 55 5 11 9 290 0.00 THE VOLUME OF SECTIONS 1 THROUGH 9 IS 102848.6 CUBIC YARDS -. C 5. r co -::, " - m oil m Or _40 a�N N ✓ J mato Oi +-g Gila - co c.iic- Y d ' CO J 5 J c J xF . F'c �Y 92.42 i . • a 9. • 1 I I . Win �1 O O J ,K - 1 - Ich � _ � a x U -J T 9``--,,z�( W W 11 C LL O tr. 2 CO "` a a < W CC o a i::: p I 1 to NI L _ , aK . N s 1e1 • N IV ) Q W in 40 t 4 11 w i , coljvU�t-F -se1 •Y W F 1 L-L.. (4 Pi i N p.-saEP--. /V _ - F-471— Fr<4=== r-i a'— l g.t. T \.:...O:="tlr( 1tN—)4 %:•INIi I.ALI. zIrION J.'riT(-:- 1.1r-•i' NAME', s�TON 1 �F It DRAWING r: SCALE(FT r .. )(; —`='1rrRC•_: ._...1• FwWl�i;._ , r CF�•f>_;i, .��:I .t.+....{._ 1:1i�.(-a,�.iil•:u �i-• : . T.:di : s.. .:'r fl. r.�c1 Ni`pimps; 501V CI.. 00 e TYPE_ TOTAL. Sr '1`_ • Er:—r `i:TID '1 0 AREA -E;F �: 7/ 35 — `••F'ROJEoi ;.NFORIIATIG'N`� s ::„ ITIral._?'ZA %;..ate DAlAg PRDJ Ec;1 t:{ F F CATON LANDF.t;...1... DRAWING SCALE(F T/I N) : 100 PF~:[:',I[iCT NL.. ,`•'iEF u '501 b. CAD • t -- • cp Li ; 1.11 DISTA E IN °. <<if l F T't -r- c) 36 .Jt_%_.'o i.'.'• j...i..I ALS n l'i._( ,..,.:. .r} :1 pp .1 I r- t•O R m A -^i ON** *INITIAL..w Z(I ION DATA* ='FRI1 JE`.:T NAME E.Al'ON LPNDF ILL DRAWING SCALE (FT/ e 100 P Ro.:Ecr.'.I N1..Jr'11,3t.-.1-: '"-OI96. .:C.) 4 i r i 1 �. i r N4 \ W I - LI I D 1 T ANCET IN 1 FT -a-in,- -I .I C 35 e,sti ≥ ter ;'V-- .merit _ • —WROECI ,. 1:r..tr ,. T r *INITIALIZATION DATA • t,sECI NAM'.: EATON LANDFILL DRAWING SCALE (F i/IN'' ,. :1.00 • .i ..r..•.... h BER% 501'7. 00 r-: —VOL UM'e IYPEt TOTAL AIR ':3P-:CE • — r t ` • F�tii 1 _ J _ LI-1 1 e!I'Ti t RNC•E IN 100 FT E. TIDN ?� a :::i7 L u ti z INJ _ USER .L TIC ........ DI...F. ..' ....r E. r r M( . I oI\l'fr I( 1 2 A DATA* ..�.. - �i. �:w��•i.".:_, ! I i•#F`[)f-{. i-. *'I trl w�[i i f_ .r.l"T LII•d U�a �: A•A• PRC4IE:s.:T NAME: EATON LANDF 1:LL DRAW INS SCALE. (FT/IN) : 100 P . .. ' ..`.:"r f. i}i. ,._.f:•1'" 5')1 9.4. 00 4'tat-_:.�E i�::. •i•::: _a f T(AL. r•Al I R SPACE • - ! i HE I fat w DISTANCE IN 1E1 FT / 3� 5 F V-6; - .r..:r.. 1 1._..I. �:1-_I� I �i. I?•�1.-.'_.i: ill.!:- t:)!.;?,,-._ i[7;...' :i :_::E E..t::; C Ii`.1F oh:i'p1IUN* *INITIALIZATION i:'J .i..., . r -r•+ -•,a r•• r LAMA'''.•II \W NG 9C 1 .I . — r's�,:i�s.;;i__I., I i'vl�I"ir�n ��':•Y••l'�:�I r_A:,!Lli� �.�_L DRAWING.L Iwo: ,�+L.,t-1•�_�� i F�1 !1:!�z i ,.+.: r EtOtT f'J►_,,'I"r.;EI"z 50196. 00 VOLUME_ TYPE TOTAL AIR '-PAC • • I �S 1 i 1 = t +yI e 1 ((! I I WE I DISTANCE IN lI_.,.1 FT i:.,!_, i. I 2./ eR*.T 2D !<.: DNIFY LI—I— -"I CAF: 9 *1-:s'R 0 YEI_ / I.Nf 31;11A I I JN'K' •x 1 1 :r ;:.. -r ll ON 1 DA f _ , - .3 .1._J r.._TON 1 r .1._.. DRAW r 11' O SCALE r� 3 1" ' ¢-�({;�..1F�.C,1 :dF�:, ;h:.2 +:_;•>. � +_,td 1_,i•�r�?.1:• 1!_i..- >.?r+.fit"�.I.i�ir: �.rf:�;l._r.= ..f:•: ,l .tNi . .I.00 PR0J EC _ 1i3 r-, -0 i 96. 10• 1 srr; ',.. r.,.,.. L. .+ SPACE ~yam_ 15_ 1 1 1 I • 1 LL 1 1 'yi N! ; r - f ,''f iI rr• 1 '+I _ : 4 I i--.1 1 1 'ti 'o I \, 'r, , CI_ ! \ I i W 1 i LiI!"-::1 RNC.E Te`: 1s CO FT —r df2k---r1cp me,_-1 AREA •'. , - i 3 / VS tat 1-4 ta..1 Fc.TANI 7s4 ISE.{:.t 1.i':F 1 T I AL.-f : OLE DATE: 7 ? —*PRO3ECT IKFO MATION T .i+; T I(;L_c.:, I ON :JA. 1A PROJECT NAME: EATON L.AN-DE I L.L_ DRAW i NG SCALE (1=''i s 100 t l F•F'C'JEC:1 N )'113CT.:, 01fit,e0ia _VOLUME: T'`fP'E. T,_'l'i"(- L AIF: ::-;PO-CE • at { { _ U- Id I IJ!I'_STANf^:E. IN 1001 FT ',5% r #D ) PAM:: „r E4z uF-IiAJCDr < EEIN4 3INIEEF IN 1NUJ . JSER INITIALS: DLF DATE:: 7-28-S7 --*PROJECT INFORMATION* *INITIALIZATION DATA* �'ROJECT NAME; EATON LANDFILL DRAWING SCALE(FTi IN) ; 100 PROJECT NUMBER; 5O196. 00 VOLUME TYPE; TOTAL AIR SPACE AREA (SF) =: 0 , �� ri' I5 a S.89^32'26"E. • 5 78 7.42' se.7z .'v ": sza - 1••<• +aw "317' 31 4•44a e d Li. k�aese.o�a+taaV' zta.°' _E B 44,s h y,�,..5, , ; - ' till • '•N 2 Mix ... • 65 s • his. j . 1 4 ;tPAq ACT; t `A y M3.29 EL77 f F`x i S \ k.-+* la t. 32432" a d. •' a / • BOTTOM \ $5•ys. GRAVEL \ ' Tit*"y Pt.bB PIT + �'a..y SP 'ilia s • i .. ,.i '{t ' v e .saa aaala a.aµ+� ' Y ... ..16 I PLAT , .. - •�. •w4� -4:!:;:'a 'Y :jig; i tit" ::::.,1, +4. a aLa 4ilw 1t'4NLt,-..Y.."..n"TVA:.Ot•. •Lf • 32.7,0± ACRES • I9 OJ ,4.aa' 1t. '._ yv. . ' ' c e .� ' sir ; sa.aef t- d wa } aa.aat • AA aua Y. - W .1.2.1.2.81,.A. !t; _ O 2A **LOS ''Vt. /r"!., toe' hY qT. .. ' M .a. ALFALFA FIELD ' •ii• • .p k. (PrwbfafY II.W 1.r Landfill) /yli�, .. 8w. / `... / '�. m Yf Aw . r. .4 e o Jlo • vi e '"4 . . % __ _........ �._ .._. e�� jyQQ�[[.. �9f� a a AREA Fl IN 1986 • . 'AST t°. "f 1 V3S C I-1 F>Li I I©F--4 D 7-2S-07 - 'k:OJEl;•'i INFORMATION* *INITIALIZATION DATA* =`F OjEC I NA{•'':E: EATON TON LANDFILL DRAWING SCALE(FT!I N) : 100 PROJECT ECT ` I...;1E E::R e 50196. 00 'v'nL_ur•1E: 1" . .=':., TGT•r':l._ AIR SPACE E31-441-1[3r4 O 7�3 EAFC I-4 LAI DI I C©r lF L TATIC3irtS Lea; E[`+ltt3xl'+IEEFL`� 1�' SE- I, , r•I A c DATE'. —..*.P•RfJE..;_,..I.. 3:NI=OtFMATI I1\1ITIAL.IZ AT ION DATA* PRO.) NAME: `'A r'ON LAND fr L.L DRAW I NS SCALE(FT/IN) : 100 E , , t-: 150 196. 00 • ri _ 1 !-% t ^s i L- i Li Li { J L e • , 1 L_ CJ,Y.c^-E. ; N _i o r.Z.. • to/35 Ali mA-E JCii i— C CiriF iJTft rIci NI V)A iZ `NZ NI 1 E 3:#'143 INtC a .,. ri.,r ,N...5- D - i..ir...lc:: 7'- .- --.*f''R..i,..7 C-.'.'1 1.NF ORM AtT 1:0Ptt 4; -x'?.I is 1 I AL3 7• T I ON DX!.I;i P1'JOJEC; I NAME: EATON LANDFIL.i... DRAW ING SCALE. (FT/:iP•,) : 1.00 C):1 T h it1 iM •-R: i::.' ` 1 r} �''�r�.l.�:.[...CI NU i�l��i_'.il. ..J z.�.i'T c�;, .•0 •,. ! ti E:: T DT AL. A I R SPACE • I - - l ii- - -- I i se I ' i r! ; It 1 i t i 1 j ►--; f i j . — — .L..._...— --..--�.—. -� __.�...-..I i 73! i % 1 IJ I — DISTANCE TN J 1`tEi FT T€i-luIC3Ri _sue I i,r.r.'" :; :-4 ri--1; $CJF_i-,__ c CI)NIF LiT IT ICI 1.I L4 F---dZY! E`sue€IN1 ELF i,INzE► II---j — JSEF I fq.I is Hl_.f=o D L_F: I?RTF . 7-28--.3.7 —►:F'P03Ei..:; i' I:',IF ORMA T I0,N*. *INITIALIZATION DATA'; LANDFILL DRAWING NE SCALE F=l I I N) 100 =��[;Ji�:�:"" NAME: EATON L..F11�lL.I-- .il..� - PROJi._CT NI_M BER4 50196. 00 _VOLUME . Y,q .. TOTAL AIR SPACE. 1 - _ . i ------"-- i l 1 - : !I t". F • 1 - Fr. 4--{ : t I'.- I I - r , L.---- -----.---._-_..--- _._ Li . 1 J j L' iI I I I 1 I 1 I I , __J. Li I'SSTANCE TN 1 l00 FT STPETiIDrq 200 _ ARE f.S1..:) = 12400 , ,`::;:3 L. 3 F -i—I--4 UJ t i<= a7 pet i----: T CN e I C3 I N1 Tr_:: f._. F u, r. Y R HAT *INITIALIZATION —�F~rtit;,a[�t.. : i:dr-C?:�.Pir-:l IC.,;V�. DATA* ;F 'FtOJE.r f NAME EATON LANDFILL DRAINC SC LE (F=T!IN) ; 1s=ac_: r:•- O PRi_;,'T FOT Null}3E 5 R: 196..00 —VQl._l.:Mt_ TYPE:i i i 1 r I••ii._ Fl IF! sr l - _ { f _ ,i i rJ f i L. •4 ti `� I - . f i I---iI I ► i 1 � I J I Lii n3 _i ANF=:t=_ IN ion FT Tfir TIC,P►# --: - i-+s;E. . C Si:'') = Ti.0'51 , 03 - ;3 t I'.-:1 {-fir :.N I. I I ALS �i'_�L L..Fti :7 IL: ! 28--1-i: -4:F'R .l_?1:'-- . I N E f..;R l'i AT ION 41 NII-1-I_ALI141.,..3.1.:IN ]AT A; PRO.: EC f NAME: a.i 0;':I I_'-'iE'I O I LL. DRAW INC.; SCALE (F. f I is N) s.-g:; Fs IV;-.i l NUMBER: 15<<1 96 n C)(...) ._ V0_;JriF::. .TYI=E_: 11.3TA1._ AI1=. :SF.ACE. i c- i � z'I 1 '1 r ; I 1 i ! 1! f 0 I 3, r-I i 1 - II. I Li i 1 1 1 I. e---- c --_.L., LII'=-rANCE I l 0 E1 F T 7—c —11—I_ID 4 AI _ ,2 0Z— 35 a e.F.a—I—F-14 FiIFt< DI F1F T. t--,.18 4 to-.11. ------C Z`':t` - ..t..4 I-�rg.".. ..F.-:1 r-4 c_---4 Tr.--111---_ .. E..,i.. 1.t - R .1; I.•• 1. 'Ill t ' r .n: • ..I 4. DATA* /+..!'/. - '1t�1-�11:_!L3 L:.1 i �I`v t""L.7i"l i�f t`�7 �14:•' 'r•.•.L 1�J. i 1 AI_I L.1"�I I V!4 A.+i"! Y'i'p' i `• EA TON L..F-NDI I LL DRAWING SCALE(FT/IN) : 100 PROJECT :\ :1,.: ..,1_Rq 0196. 00 4..r i I.:1 • t':l... (-IT 1,. SPACE I ____________,---7 . 1 r_ F - i I .. 1 • . •J„ L 4.l . M 1 1 Li I Li I I I ____-I______ / I • tl..'-ViTANt E IN 1 O FT ST TICIIV r.--s "'n` : '23/ - 317 1".1 ZV ".i EisI(I:`-t EE I— I N (3 1N _ 1N .1. ...I f S DLF 1)A ; E:: 7 _28. :17 :PROX:Cr 1'" -r..r . -1: N.ITIAL_.IZ TI0N I.1;:O(4•r: :t h�: l�' i``IA 1 .�i:�il k I PF DJ1EC ::" NAME: EATON LANDF I L...L. DRAW INC NL SCALE_ ( -i /1.N) i 00 1"�s1"tj)V 11l.::.C f•. NUMB R" 5n196. 0° V Ii'..E.:S•.I":. f 5::E . OVAL. Air; SPALE • - i145. { 1.. 1 i _ • y 1i i 1 DISTANCE IN 100 FT ST A iricn AREA (SF) ._ 122.. '.`3;`: "31' . -0.47s6 ZY ENk rq. r i mac_ -4e3''hCdr—w:T T!'•EORM" yION* :fI:N TIALILATInN i.: 1 r PROJECT NAME: EATON I.AN ?. I:l_.!_ DRAW I NG sc( L.E Cf i i 1N) : 10u -ti rr•O��_.. NUMBER: i B l;; 5 yr. 2"f{C.:u�_;(-""�". t+ttJt'1 �'\: J�_'1/7•�yf7. i/-�+.� rr"� t {,:i II t:r'.�'^ _ U TA:_.. 1"'.x I`' -3I.:'ACE ocricnq AP a k b Z,. � W • J 4‘.... / id + W m N N • \\\N u k u P Y. W cx W N • O • O' n b L A Y , W ♦ W O N ► � D ova,imitc _ M ri 04 `�, '� 0V tit N - ` V .NN MMTtRiA x -. tl N N u o �) .. D L. SOtFICiA 1 - fltPo5 LT r _3 PT. sal IOC) O . O a O iv m - m m • o__ w D F a O co R, r to N -ti N O/ mI , a N N A 71 N 'w 'u / , , 1 ♦t - fee /. 4. , m mks fi +. _.. / �.,,• 5303 , 3 N .. __ _... N 0dOb o// _ / SoVT+t,- V u— ,42n, "`"` N Cp EATcJ..• tic +.-re'''' so,vb.00s /ti= re, r; ._.:.,..:+:war 24,./3/5 int ESE (--t-t up =C3I___€ir-1 E € tT 1F'Li-1- -a IQ ENE S - LA W% ?'yr;NI E-4 -3 I t I N G I NJ L _ DATE:,..- .i, ._.).^' .y..�. `1SE:F�: INITIALS: �.i f-�LV I)t�; ;r_: t:.. 'f:� -PROJECT INFORMATION* • it i CiL I ZATION :.7AT(':* ?ROjECT Mr.: EATON ,., /I \I) .� . t- +, �- �. � r= k•:...Fi ., ��,I._f AFT �.f `'ROJ E.C T NUMBER: `501.S .I. CO VERT . S`C( t...E ( i/I N) . 50 - PRECISION(%) :: 95 - ! :RF•n. AREA {,_,.,._..._...rx}.' t 1„!.IW fy ID. : �:)f.l t'ii t^!s1- . ... (BORROW k•S.�•'��-!e 1o1...uME TYPE: ` SOIL .rit-tr rs use- uE: as )-/vac_ Co'tee. RRE A(s 1 )=-• 40. 074 . aRf :A (SF) -- 1001E35 .iREA (S`r'. 11132 AREA(ACRES) = 2. 3 —10!...!.'ME (C!e') 11132 7 7/� 52'26"E. 78 7.421 '3e.72 3v.ai - .piss 4834.01 ,, ' r`rT t=a.es 4835.04 t 3.55 O us 2 in 0 W J 9 .f,=33 :..3.29 0J 22.] :� �� 3.12 O t3.CC ta. ¶ : ,t TOP OF eorroa I \l!� a 1 33 2 1+ +20.99 / i_I�• 1+21.67 +22.39 _ B E ELEV. _. =`4 1.0 P3 N 3L=.. f 1 ait to • 32.70 ± ACRES o 03 /:.,; •� -- ==.t1 m ,- aligimmems W j' W � o f`E‘000 0.B5 421.63 1 2.80 G of GO E KM=a S£RM A FIELD Used for Landfill AVAIL o%Le. ffO a: ..53 3 co , Cc\0a MATERIAL O in O 4 O 1 _ A A N r 3)a 9.7 RE FILLED IN 1986 I TOP OF 1 i - 1r SLOPE I _ ---.----- a,p \ F.an.J lF )I 1987 i n7/9G.ea ' WARZYN ENGINEERING INC. L� MADISON, WISCONSIN Z-1-'/ DATE e' /- /-7 SUBJECT a:4-re-Li SHEET NO.2 8___OF 35 CHKD. BY BE4- D ATE_AT/ 2 _EQS I Fig-'- 42pt Cv'T VoCuAlE JOB NO.__Sa��, -- 1 . rs' i C+1, . E' ■� p S �' ■O + O x ► D i . • , ■■■ z 36 del ■■ 3 _ 0. 77 /''0 7 3 'G e- `A / / 00 Is ,,// 4.4 ' 'GS I . mot' 31 8 6 340„ ' y 2 ' jIll ■■■■■■■■■■■■■■■■■■■■■■■■■■r • F - o a , ' ,. zy F- r-.--c-` ;:„..4 ..C� c 'a �.- e T T Il F..--_-_2,=r-v,�ice%.. E �i 4"�f+:..._-f� 4-�i?#-F Z'--' �3 P-16--3 6 � a J._.Lf v>r'-Y :Z"(NI E Nii i 1 NI E E '4 I 1 NI C — .... :....i., .r ..::T !,.. .k.IN I IAL_I zFi AT ION DO; 1 A**r: _O _.C.1. '--1(4lyll,- , EA: 0"N L.F .DRAW J No SCAl.._E:F. 7/I N) . 1 - 1^,!R{.; ir C'T MAID E:::R 50- 9{ . 00 ,l.:11..I.!NE 1 t'PE„ E .I3M __------- -iii . SIt i. i F-- .. ii 1 , W !1C ! i 1• .. • Si ! i • 1--; III 1 1.1... I _ti l f ITi;..IF 1r+Ii_E TN 151P, FT t e s Pt-YID r.4 I ANr•• :Si- 1�.. ;'1_i L:. ._7 i :... -. ..... 1:'A G L..:4 (;)17.3 5 s -IF‹...i to LAS Ci F.-___ c ta'''i Li-k 3 ID r•--1 toe a=teZ'fNI `&..".7 1.7.3 1t INI — i;NI .., OGEE. 'INITIALS: jPW DATE_ 8/03/C7 KPRCJECT INFJFMP1F .I.ON* *INITIALIZATION DATA* ?tF�t^I; :..l- NAME:a EATON LE DRAWING 9CPL.E(F=T/IN) : 100 P'}R O Y r...tr,., I r.1 I ,. •..,0_) 5l,E..,. r_?1.t - JOL.e..;ME 'T'YPE BERM • . . • t c I I - ti .. I s + '.. .7 }5 -s I •y'', S It i ,e• I I W 1 ( I;. AN CF. IN 1 2P T 1 i.kLA (Sr),-, 336. 44 _.. 3f 35 >T F T l-19.-x, D :E-== CI:D. LI-V ICINZE 6r,F fA Z` -Ni ;i1 M 15 I NII IG i NI - x Pi{ •. -,N - N .t i c-::,L.I Z AT i oN Di'-1�.i��'=• f"'�lC::`'•'_� :I:NF CNN • I NAME: EATON i_.1-' DR 0,1,4 t: SCALE (FT/IN) „ I0{] t"•+I t' i I E,-,.. 50 1.96.00 -VOL LIME. .,'V, •E a BERM 'S. C::.: t< -.4 i SSi .f — i 1--{ ------ ___ \ F—{ i s-- s L; I ILl I I T. 3-ST ANC•r_•_ IN 1. ;_12l FT STtkTi tot r4 .:....-- OP E.A (S ):::: :e.:,0. ,f F'Li T TICS 144.2 entF:Z 1,4 &'s4C��V E:F IFJ rw'C~._ USF.I I:NI IALS: JF'W DATE: •k!- :'ROJEC:T INc ORMAT'ION* *INITIALIZATION DATA* PROJECT NAME: EATON LF DRAWING SCALE(F T i I y) , 100 PROJECT NUM r. r."0•i 6. 00 —VOLUME TYPE: BERM • • Cfi I-I L• 1- 1 is J DISTANCE IN 100 FT s s c$ sr: „, ; AREA (s } _ fit 7 o Mi :, LA GC: 53/ 35 dck t :TF-itAicir€'_ c cit i>F„Li r -r-TIE) i 14tni cZ Y LNJ NI(31Ni i=F I NI(3 INice_ USER ].N1..1..1A1...'i: .dPW DACE: 0/07;/07 0'r' *PROJECT Atli O MAT I ON 4 *INITIALIZATION DA rA -0JECI NAME: EATON LE DRAWING ' CAL....E(Eli IN) : 100 PROJECT NUMBER., 50196. 0 -VOLUME TYF'E: 2CRM • I arty / - f!', \ ,t 1 _ t .4 - y r 44 4 �1 f 4'o I f` k i ,' ,' _c \ !-f / - 1; l r Li I _LI I i I I ___________ __._-_L_.- _. — .._______ LJISTFiNCE IN n 3:_-" TA-rain i" ,. 51 3� E rl-4 t4c --: c c a F'i.5 a rICIINI F.;s'e'--tF Z N'NI E:VEINIa: F�.xt,3c IT _ USER INITIALS: JI:'W I'3 TE: 23/03/ "7 - *PROJECT I NFORMAT ION* >-" N I"1 I Al_I Z AT I ON DATA* PROJECT NAME: EATON LF :DRAW II NG= =;CAL..E (FT/IN) 100 PROJECT NUMBER t 50 1 96.. 00 -.VOLUME TYPE: BERM . _ 1 ' 1 � • t 1 I LL 1 t\ t I f \ l 1 1 \. 4. I.s.i 1_I I rTRt4C C IN i 100 FT ; PAGE i r-,- LAS Fpt r 7:f ET Ns I Z-`4 .*-_'FR I NI t� I i'-4 - r•.�; ,.,..,,V .1 DATE.: 3/03/£3 1S ER INITIALS: ��c..V.1 *PROJECT INFORMATION* *INITIALIZATION DATA* C ROJECT NAME' EATON L_F DRAWING 8CAl._E (F T/I N) s 100 0 —VOLUME TYPE: BERM i i , — i ti H. I { --- I f k. •4'.. i Li i Li I I DISTANCE IN 100 FT E3TA,—IQI'4 "7 APPENDIX E SURFACE WATER DRAINAGE CALCULATIONS s WARZYN ENGINEERING INC. ��^�`- ��7,,{{{ p� MADISON, WISCONSIN BY_ C DATE 1/ / SUBJECT sc. a \\LA �l-��. SHEET NO._ I OF 7 CHKD. 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II: { _ ,�M 1 I M•AIM.::::::■:::!: L, { { I „?r T', , . . . _ ■■ 1111 ■t i.■ f- - 1 . 1 ' i I_ ri i I ` 7 i I OPEN CHANNEL FLOW CALCULATIONS PROJECT: EATON LANDFILL CONTRACT NO: 50196 COMPUTED BY: BER DATE: 7/31/87 GRASSED TRAPEZOIDAL SWALE WITH UNIFORM SIDE SLOPES MANNING N VALUES ADJUSTED USING RETARDENCE CURVES A-E AS A FUNCTION OF N & V*R BOTTOM WIDTH = 4.00 SIDE SLOPE = 3.00 CHANNEL SLOPE = 0.0025 DISCHARGE Q MAX = 22.40 RETARDANCE CURVE B -- TRIAL# Y AREA R V1 Vl*R N V2 1.0 1 .00 7.00 0.678 3.200 2. 170 0.095 0.605 TRY LARGER Y VALUE 2.0 2.00 20.00 1 .201 1 . 120 1 .345 0. 120 0.702 TRY LARGER Y VALUE 3.0 2.50 28.75 1 .451 0.779 1 . 131 0. 150 0.637 TRY LARGER Y VALUE 4.0 2.80 34.72 1.599 0.645 1.032 0. 150 0.679 TRY SMALLER Y VALUE SOLUTION TO THE MANNING EQUATION FOR TRAPEZOIDAL CHANNEL SECTIONS ___ MANNING N = 0.030 WIDTH OF BOTTOM = 4.000 SIDE SLOPE OF CHANNEL = 3.0( CHANNEL SLOPE = 0.0025 DEPTH OF FLOW = 2.800 AREA = 34.720 HYDRAULIC RADIUS = 1 .5994 VELOCITY = 3.396 - DISCHARGE = 117.918 MANNING N = 0.150 WIDTH OF BOTTOM = 4.000 SIDE SLOPE OF CHANNEL = 3.0( CHANNEL SLOPE = 0.0025 DEPTH OF FLOW = 2.800 AREA = 34.720 HYDRAULIC RADIUS = 1 .5994 VELOCITY = 0.679 DISCHARGE = 23. 584 3 131 4' B-1 APPENDIX B SOIL SERIES AND HYDROLOGIC SOIL GROUPS This appendix provides soil names and their hydrologic classification used in determining soil-cover complexes in chapter 2 of this technical release. The hydrologic parameter, A, B, C, or D, is an indicator of the minimum rate of infiltration obtained for a bare soil after pro- longed wetting. By using the hydrologic classification and the asso- ciated land use, runoff curve numbers can be computed as shown in chapter 2. - The hydrologic soil groups, as defined by SCS soil scientists, are: A. (Low runoff potential) . Soils having a high infiltration rate even when thoroughly wetted and consisting chiefly of deep, well to excessively drained sands or gravels. B. Soils having a moderate infiltration rate when thoroughly wetted and consisting chiefly of moderately deep to deep, moderately well to well drained soils with moderately fine to moderately coarse texture: C. Soils having a slow infiltration rate when thoroughly wetted and con- - sisting chiefly of soils with a layer that impedes downward movement of water or soils with moderately fine to fine texture. D. (High runoff potential) . Soils having a very slow infiltration rate when thoroughly wetted and consisting chiefly of clay soils with a high swelling potential, soils with a permanent high water table, soils with a claypan or clay layer at or near the surface, and shal- low soils over nearly impervious material. / 7 2-5 Table 2-2.--Runoff curve numbers for selected agricultural, suburban, and urban land use. (Antecedent moisture condition II, and Ia = 0.23) HYDROLOGIC SOIL GROUP LAND USE DESCRIPTION A N C D Cultivated land!/: without conservation treatment 72 81 88 91 : with conservation treatment 62 71 78 81 _ • 68 79 86 89 Pasture or range land: poor condition good condition 39 61 74 80 _ 30 58 71 78 Meadow: good condition Wood or Forest land: thin stand, poor cover, no mulch 45 66 77 83 good cover!/ 25 55 TO TT Open Spaces, lavns, parks, golf courses, cemeteries, etc. good condition: grass cover on 75% or more of the area 39 61 74 8o • fair condition: grass cover on 50% to 75% of the area 49 69 79 84 Commercial and business areas (85% impervious) 89 92 94 95 Industrial districts (72% impervious). 81 88 91 93 Residential:/ Average lot size Average % Imperviousl/ _ 1/8 acre or less 65 77 85 90 92 1/4 acre 38 61 75 83 87 1/3 acre 30 57 72 81 86 1/2 acre 25 54 10 Bo 85 — 1 acre 20 51 68 79 84 . driveways, etc.!/ 98 98 98 98 Paved parking lots, roofs, Streets and roads: paved with curbs and storm severs!/ 98 98 98 98 76 85 89 91 gravel 72 82 87 89 dirt 11 For a more detailed description of agricultural land curse e,numbers 9r use ersefer to A National Engineering Handbook, Section 4, Hydrology, Chapter 2. I/ Good cover is protected from grazing and litter end brush cover soil. 1/ Curve numbers are computed assuming the runoff from the house end driveway is directed towards the street with a minimum of roof water directed to lawns where additional infiltration could occur. 1/ The remaining pervious areas (lawn) are considered to be in good pasture condition ___ for these curve numbers. 11 In some warmer climates of the country a curve number of 95 may be used. _ 5/ D-3 • I . I L.11 - : ' 1 ' °0 } • - °" I .47 r. I I W 111.4 o 4 . . -- I * w I i « I N (e'1 y _. -J1 i1I. .- J _..___1au U/ W III I i 0 , . I I s � I ' m H P -t • -Ili L =1 Muc— ci y 1 49 V WI at H 41 {J 11 I-1.1 .. _ q W N N J . . . I ' I .I- I t ` I I 1 4 a O CH Z IL mk 443 7 111 I UA -I -t-- `-- 4 a N H I I I ..1 y cii u) - I it ! ..1 I I I W R7 I I O .-_ _- , ..__.. N H I r . •I- .__ J L - ---J • —4 , f. a. ._ .__- # J . -- -ti s x H EA a . . . I , , i N ... ,. . .- __._.-.._. I 1 i. . , 1 I 1 ) _.. lay g&88 § g 5 g g eases a 9g g • .. .. - G. DioNna 30 HJNI/SID) 30YYHDSIU )IY3.1 Table 2-1.--Runoff depth in inches for selected CN's and rainfall amounts Rainfall Curve Number (WI' (inches) 60 65 70 75 80 85 90 95 98 1.0 0 0 0 0.03 0.08 . 0.17 0.32 .56 .79 1.2 0 0 0.03 0.07 _0.15; 0.28 0.46 .74 .99 1.4 0 0.02 0:06 0.13 0.24 0.39 0.61 .92 1.18 1.6 0.01 0.05 0.11 0.20 0.34 0.52 0.76 1.11 1.38 1.8 0.03 0.09 0.17 0.29 . 0.44 0.65• 0.93 1.29 1.58 2.0 0.06 0.14 0.24 0.38 0.56 0.80 1.09 1.48 1.77 2.5 0.17 0.30 0.46_ 0.65- 0.89 1.18 1.53 1.96 2.27 _. 3.0 0.33 0.51 0.72 0.96 1.25 1.59 1.98 2.45 2.78 4.0 0.76. 1.03 1.33 1.67 2.04 2.46 2.92 3.43 3.77 5.0 1.30 1.65 2.04 2.45 2.89 3.37 3.88 4.42 4.76 6.0 1.92 2.35 2.80 3.28 3.78 4.31 4.85 5.41 5.76 7.0 2.60 3.10 3.62 4.15 4.69 5.26 5.82 6.41 6.76 8.0 3.33 3.90 4.47 5.04 5.62 6.22 6.81 7.40 7.76 9.0 4.10 4.72 5.34 5.95 6.57 7.19 7.79 8.40 8.76 10.0 4.90 5.57 6.23 6.88 7.52 8.16 8.78 9.40 9.76 11.0 5.72 6.44 7.13 7.82 8.48 9.14 9.77 10.39 10.76 - 12.0 6.56 7.32 .8.05 8.76 9.45 10.12 1046 11.39 11.76 1/ To obtain runoff depths for CH's and other rainfall amounts not shorn in this table, use an arithmetic interpolation. 7/ -7 DEGREES OF VEGETAL RETARDANCE FOR WHICH GRAPHICAL SOLUTIONS OF THE MANNING FORMULA HAVE BEEN PREPARED 20 - - , • 10 I , ______/ — 6 ,___. , V tn D 4 L o z __ a v 3 a a _ a O = r a z A ' Q I•- c.5 8 O J > 14 C 0 .8 D . I- U D .6 E cc o , ca. .5 4 .3 l . .2 .1 / ... .5 .4 .3 .2 .1 .08 .06 .05 .04 .03 .02 MANNING n FROM SC:S "HANOROOK OF Cs4ANNFL DESI( N FOP SOIL ANT)tvATER CONSERVATION" Hello