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Prtd :On Nw d 6smn2t• r4.Reap)raa.Ragel'n�i IyC TOPOGRAPHIC MAP V.:.CAa a Mama Cans.. al �O P.M.w.i Cat?. eZ. QeANooreQUNrtso wsmDaRsecanpleNE AREA USE AND SITE CONDITION MAP •• VARRA COAL ASH PROJECT Tea e b cenN a Dot Bose of Cate',Cambrawrt.WOO Cary Crbaao a0a seey ama...sat.ra wt...P..ga;pa.c DF.bpRea Pun a DI..M SA.,Rm... WELD COUNTY,COLORADO a«e.oano...Os.*slow pa data harem dry .rum yon;,.. 2D0.8 � 'VA:' CG ..yC.Rtrb,a.m LEGEND; Environmental AnEST 1 .S{.4iii 1 tr Services F% NW a O PROPOSED MONITORING Woo Catty COM M So good .� WELL LOCATION t UT APPLICANT. Dowry kW dos OOW __ . I Ai INFERRED GR Il.EA5URE0 SROUNO WER FLOW D RECTION MARRA COMPANIES 12910 WELD COUNTY ROAD 13 PROPFRiI'fawMER71aPPRwK LONGMONT,COLORADO 80504 Theaaaraatl Rya way Pa7Rlww,M.Vl•I.p...ppeab I Ran ae�. 2 AFTER. 7 it O.Woropl Rafe..Daormr.SIrarWl M abed Arlon da did NELSON ENGINEERS I AN roar T 640 GREELEY NATIONAL PLAZA 1\-) 0/#'''/.1.1"6... a. � � n Q`—` _ GREELEY,COLORADO 80631 EXISIT B PHONE 356-6362 INDEX MAP r N . Z c3Z ..,a CORRECTED RESOLUTION RE: APPROVE SITE SPECIFIC DEVELOPMENT PLAN AND 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 FOR A SOLID WASTE DISPOSAL FACILITY (COAL ASH BURIAL PROJECT) IN THE A (AGRICULTURAL) ZONE DISTRICT -VARRA COMPANIES, INC. WHEREAS, the Board of County Commissioners of Weld County, Colorado, pursuant to Colorado statute and the Weld County Home Rule Charter, is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS, the Board of County Commissioners held a public hearing on the 19th day of September, 2001, at the hour of 10:00 a.m. in the Chambers of the Board for the purpose of hearing the application of Varra Companies, Inc., 12910 Weld County Road 13, Longmont, Colorado 80504, for a Site Specific Development Plan and 3rd Amended Use by Special Review Permit #248 for a Solid Waste Disposal Facility (coal ash burial project) in the A (Agricultural) Zone District on the following described real estate, to-wit: NW 1!4 of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado WHEREAS, said applicant was represented by Joby Adams, Colorado Groundwater Resource Services, P.O. Box 1489, Fort Collins, Colorado 80524, at said hearing, and WHEREAS, Section 23-2-230 of the Weld County Code provides standards for review of said 3rd Amended Use by Special Review Permit, and WHEREAS, the Board of County Commissioners heard all of the testimony and statements of those present, studied the request of the applicant and the recommendations of the Weld County Planning Commission and all of the exhibits and evidence presented in this matter and, having been fully informed, finds that this request shall be approved for the following reasons: 1. The submitted materials are in compliance with the application requirements of Section 23-2-260 of the Weld County Code. 2. It is the opinion of the Board of County Commissioners that the applicant has shown compliance with Section 23-2-230.B of the Weld County Code as follows: a. Section 23-2-230.B.1 -- The proposed use is consistent with Chapter 22 and any other applicable code provisions or ordinances in effect. The Solid Waste Disposal Facility is for a pilot project to determine the applicability of coal ash as a fill product for the reclamation of gravel mining quarries. This application is an amendment to Amended Use by Special Review Permit #248, which allows for gravel mining in the northwest quarter of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado. Chapter 22 of the Weld County Code, Comprehensive Plan, Section 22-5-70, lists five Goals for Commercial/Mineral Resources. The original Use by Special Review ��// / 2001-2457 [C A ' 2(�f , 4a/ ' 2 PL0791 CORRECTED RESOLUTION FOR 3RD AMENDED USE BY SPECIAL REVIEW PERMIT #248 - VARRA COMPANIES, INC. PAGE 2 Permit#248 and its subsequent amendment was found in conformance with the Comprehensive Plan Goals and Policies for Commercial/Mineral Resources. This proposal will conform to, and remain compatible with, all of the Commercial/Mineral Resources Goals and Policies. b. Section 23-2-230.8.2 —The proposed use is consistent with the intent of the A (Agricultural) Zone District. Section 23-3-40.1 of the Weld County Code provides for Solid Waste Disposal sites and facilities, subject to the additional requirements of Section 23-4-380, as a Use by Special Review in the A (Agricultural) Zone District. This project is also directly related to the reclamation of a gravel mining operation, which is a use permitted by Section 23-3-40.A. In accordance with Section 30-20-100.5, C.R.S., a Certificate of Designation is required. The Certificate of Designation shall not be deemed approved until or unless a Use by Special Review Permit has been approved by the Board of County Commissioners where required by Chapter 23 of the Weld County Code. c. Section 23-2-230.B.3— The uses which will be permitted will be compatible with the existing surrounding land uses. Surrounding land uses are primarily agricultural uses and existing mining operations. The closest residential structure is approximately one mile to the south, with a farm and existing structures north and adjacent to the Varra property. The applicant is required to have a Well Monitoring Plan, which is to be approved by both the State of Colorado and the Weld County Department of Public Health and Environment. The applicant has indicated that although the Monitoring Plan requires the monitoring wells be placed fifty feet from the pilot project trench, indicator monitoring wells will also be placed ten to fifteen feet, approximately twenty-five feet, and approximately forty feet from the trench. The placing of the indicator monitoring wells between the fifty-foot wells ensures early detection of contaminants in the ground water. All other compatibility issues concerning truck traffic, landscaping/buffering and dust are addressed in the Conditions of Approval and Development Standards. d. Section 23-2-230.B.4—The uses which will be permitted will be compatible with future development of the surrounding area as permitted by the existing zoning and with the future development as projected by Chapter 22 of the Weld County Code and any other applicable code provisions or ordinances in effect, or the adopted Master Plans of affected municipalities. The Towns of Firestone and Mead were sent referrals for this application on December 8, 1998, and again on July 13, 2001. The Town of Firestone did not return the referral on either occasion and the Town of Mead indicated no conflicts with its interests through a referral response dated December 15, 1998. 2001-2457 PL0791 CORRECTED RESOLUTION FOR 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 -VARRA COMPANIES, INC. PAGE 3 e. Section 23-2-230.B.5 —The application complies with Article V of the Weld County Code. The property does lie within the One Hundred (100) Year Flood Plain, as shown on FIRM Community Panel Map number 080266-0855C, dated September 28, 1982. Approximately four hundred tons of fly ash will be placed in a trench measuring ten feet wide, one hundred feet long and ten feet deep. The trench is considered development in the flood plain and a Flood Hazard Development Permit will be required as a Condition of Approval. Effective December 1, 1999, Building Permits issued on the lot will be required to adhere to the fee structure of the Southwest Weld Road Impact Program Area 3. No structures are being proposed, other than the trench as described above; however, as a Condition of Approval, the applicant shall contact the Weld County Department of Building Inspection for any building permit requirements. f. Section 23-2-230.B.6 —The applicant has demonstrated a diligent effort to conserve prime agricultural land in the locational decision for the proposed use. The property has an existing mining permit (Amended USR#248) as stated previously, and this proposal is a pilot project for the reclamation of that permit. No farmground will be taken out of production for this use. g. Section 23-2-230.B.7 —The Design Standards (Section 23-2-240, Weld County Code), Operation Standards (Section 23-2-250, Weld County Code), Conditions of Approval, and Development Standards ensure that there are adequate provisions for the protection of the health, safety, and welfare of the inhabitants of the neighborhood and County. h. Section 23-4-380 - Solid waste sites and facilities, or hazardous waste disposal sites, Supplementary District Regulations will be enforced through the Conditions of Approval and Development Standards. NOW, THEREFORE, BE IT RESOLVED by the Board of County Commissioners of Weld County, Colorado, that the application of Varra Companies, Inc., for a Site Specific Development Plan and 3rd Amended Use by Special Review Permit#248 for a Solid Waste Disposal Facility (coal ash burial project) in the A (Agricultural) Zone District on the hereinabove described parcel of land be, and hereby is, granted subject to the following conditions: 1. The attached Development Standards for the Use by Special Review Permit shall be adopted and placed on the Use by Special Review Plat prior to recording. The completed plat shall be delivered to the Weld County Department of Planning Services and be ready for recording in the Weld County Clerk and Recorder's Office within 60 days of approval by the Board of County Commissioners. 2001-2457 PL0791 CORRECTED RESOLUTION FOR 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 -VARRA COMPANIES, INC. PAGE 4 2. Prior to recording the plat: A. The applicant shall submit a Comprehensive Site Specific Ground Water Investigation Report to the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment for review and approval. Written evidence of such shall be submitted to the Department of Planning Services. The investigation shall include, at a minimum: 1) A description of the ground water flow rate, and ground water flow direction, including seasonal fluctuations in ground water flow. 2) A detailed description of materials comprising the uppermost aquifer, including the lithology, thickness, hydraulic conductivity, porosity and effective porosity. 3) An evaluation of local ground water quality. Analytical parameters must be identical to those from the column test. B. A Comprehensive Site Specific Ground Water Monitoring Plan must be submitted and approved by Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. At a minimum, the Plan shall address the location and purpose of all monitoring points, monitoring frequency, monitoring parameters, analytical methods, reporting frequencies, etc. Written evidence of such shall be submitted to the Department of Planning Services. C. The applicant shall provide evidence to the Weld County Department of Public Health and Environment that an appropriate financial assurance mechanism has been established in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). Written evidence of such shall be submitted to the Department of Planning Services. D. The applicant shall provide evidence that all issues described in the May 23, 2001, letter from the Colorado Division of Minerals and Geology have been addressed. Written evidence of such shall be submitted to the Department of Planning Services. E. The applicant shall submit a plan for controlling fugitive dust during fly ash placement activities. The plan must be reviewed and approved by the Weld County Department of Public Health and Environment. At a minimum, the plan shall address on-site controls, as well as controls that will be implemented during hauling activities. Written evidence of such shall be submitted to the Department of Planning Services. 2001-2457 PL0791 CORRECTED RESOLUTION FOR 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 - VARRA COMPANIES, INC. PAGE 5 F. If applicable, the applicant shall obtain an emissions permit from the Air Pollution Control Division of the Colorado Department of Public Health and Environment. A copy of the permit, or written evidence that the permit is not required, shall be submitted to the Department of Planning Services. G. The applicant shall attempt to address the concerns and requirements of the Colorado Division of Wildlife. Written evidence of such shall be submitted to the Department of Planning Services. H. The applicant shall submit written evidence to the Department of Planning Services showing conformance with the Colorado Division of Minerals and Geology Mining and Reclamation Plan for this site. I. The applicant shall attempt to address the requirements of the Longmont Soil Conservation District. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. J, The applicant shall withdraw the application request for a Site Specific Development Plan and Second Amended Use by Special Review Permit#248. 3. Prior to operation: A. The applicant shall apply, and be approved, for a Flood Hazard Development Permit for any development that will increase or decrease the base flood elevation in the flood plain as delineated on FIRM Community Panel Map # 080266-0855C, dated September 28, 1982. B. The applicant shall contact the Weld County Department of Building Inspection regarding any Uniform Building Code requirements for the proposed facility. C. Any signage on the property shall comply with Section 23-4-90, Weld County Code, and have approved building permits if required. 4. The Use by Special Review activity shall not occur, nor shall any building or electrical permits be issued on the property, until the Use by Special Review plat is ready to be recorded in the office of the Weld County Clerk and Recorder. 2001-2457 PL0791 CORRECTED RESOLUTION FOR 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 - VARRA COMPANIES, INC. PAGE 6 The above and foregoing Resolution was, on motion duly made and seconded, adopted by the following vote on the 29th day of October, A.D., 2001. BOARD OF COUNTY COMMISSIONERS (_ 1:�.r WELD COU Y, COLORADO ATTEST: Li/ ` ,i iii 7'1 .i . g :,: . :':(� M. J. elle, air Weld County Clerk to t eBp .,r :1; - , f i. `- Glenn Vaad;l iO- em BY: ; _j _ Deputy Clerk to the Board _ : 1/--�„.,-,� Willi . Jerke AP PROVEDr AS- FORM: ',It- c1 r av• E. L n r - aunty Attorney v Robert D. Mas en Iii,— Date of signature: 2001-2457 PL0791 SITE SPECIFIC DEVELOPMENT PLAN SPECIAL REVIEW PERMIT DEVELOPMENT STANDARDS VARRA COMPANIES, INC. 3RD AMUSR#248 1. The Site Specific Development Plan and 3rd Amended Use by Special Review Permit#248 is for a Solid Waste Disposal Facility (coal ash burial project) in the A (Agricultural) Zone District, as indicated in the application materials on file and subject to the Development Standards stated hereon. 2. Approval of this plan may create a vested property right pursuant to Section 23-8-10 of the Weld County Code. 3. The pilot project shall be limited to approximately 400 tons of fly ash that will be placed in a trench measuring 10 feet wide, 100 feet long, and 10 feet deep. 4, There shall be a single point of ingress and egress to the disposal site. 5. The construction of the disposal trench shall be supervised by a professional engineer. A construction completion report shall be submitted which shows the surveyed location of the trench segment that is constructed. The report shall also identify soil profile and evaluate conditions discovered during excavation. 6. All stockpile overburden, soil, and associated materials shall be managed to prevent nuisance conditions. The facility operator shall comply with the Soil Conservation District requirements for erosion control, seeding stockpiles, fertilizing, and seedbed preparation. 7. Ash should not be stockpiled longer than 72 hours after receipt at the site. Any stockpiled ash shall be underlaid and covered with plastic. 8. The project life shall be determined by the results of field and laboratory data after evaluation by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. 9. The facility shall conduct all monitoring activities as described in the approved Groundwater Monitoring Plan. 10. Background water quality levels should be accounted for when considering action levels. With exception to boron (see additional notes to be placed on plat), the most stringent groundwater standards promulgated under The Basic Standards for Ground Water, Regulation No. 41 (5CCR 1002-41), shall be used when determining if a standard is exceeded. If a standard is exceeded at a point of compliance (POC)well and confirmation sampling validates the exceedence, remedial measures shall be implemented. 11. The Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall have the option of collecting split samples from each ground water monitoring well. 2001-2457 PL0791 DEVELOPMENT STANDARDS - VARRA COMPANIES, INC. (3RD AMUSR#248) PAGE 2 12. The applicant shall submit all laboratory results to the Colorado Department of Public Health and Environment and the Weld County Department of Public Health and Environment with seven (7)days of receipt. If any standard is exceeded, the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall be notified within 48 hours. 13. Operation inspection reports of the entire facility shall be made on a quarterly basis for the life of the pilot project. The inspection report shall be signed by a professional engineer. The engineer shall certify the operation is progressing in accordance with all aspects of the approved Use by Special Review Permit and Certificate of Designation. A signed copy of the report shall be submitted to the Colorado Department of Public Health and Environment and Weld County Department of Public Health and Environment. 14. The facility operator shall maintain the following records to be available for review at any reasonable time by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment: a. Quarterly operations inspection reports b. Volume of ash disposed c. Results of water quality monitoring d. Laboratory results for fly ash analyses 15. The facility shall be operated in a manner to control fugitive dust and fly ash at all times. All operations shall be conducted in accordance with the approved Dust Control Plan. Additional dust abatement measures shall be implemented at the request of the Weld County Department of Public Health and Environment in the event it is determined that dust is a nuisance condition. 16. The maximum permissible noise level shall not exceed the light industrial limit of 70 db(A), as measured according to Section 25-12-102, C.R.S. 17. The owner and/or facility operator shall notify representatives of the Colorado Department of Public Health and Environment, Weld County Department of Public Health and Environment, and Department of Planning Services of any proposed oil and gas drilling within the Use by Special Review Permit area. 18. The facility shall comply with The Regulations Pertaining to Solid Waste, Disposal Sites and Facilities (6 CCR 1007-2), the Weld County Code, and the Rules and Regulations of the Colorado Division of Minerals and Geology. 19. The facility shall maintain evidence that an appropriate financial assurance mechanism has been secured in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). 2001-2457 PL0791 DEVELOPMENT STANDARDS - VARRA COMPANIES, INC. (3RD AMUSR #248) PAGE 3 20. A metal sign shall be posted at the facility entrance. The sign shall be a minimum of three feet in width and four feet in length. The sign shall state the following: a. Name of operator b. Type of project c. Emergency phone numbers of the facility operator 21. The applicant shall submit a copy of the results and findings of the pilot project to the Central Weld County Water District. 22_ The applicant shall notify the Department of Army, Corps of Engineers, for proper Department of Army permits or changes in permit requirements pursuant to Section 404 of the Clean Water Act, if any work associated with this proposal requires the placement of dredged or fill material, and if any excavation associated with a dredged or fill project, either temporary or permanent, in waters of the United States, occurs at this site. Any other requirements of the Corps of Engineers shall be addressed by the applicant and evidence submitted to the Department of Planning Services. 23. The amendment to this Use by Special Review Permit is only for the pilot project of a Solid Waste Disposal Site and Certificate of Designation. All other State and Federal requirements, Conditions of Approval and Development Standards for Use by Special Review Permit #248 and Amended Use by Special Review Permit#248 still apply to the mining operation and the properties which they are permitted on. 24. Effective December 1, 1999, Building Permits issued on the property will be required to adhere to the fee structure of the Southwest Weld Road Impact Program Area 3. 25. Hours of operation shall be limited to the hours of daylight,except for emergency situations. Hours of operation may be extended with specific permission from the Weld County Board of County Commissioners. This restriction shall not apply to operation of the administrative or executive offices or repair and maintenance of the operation. 26. Restroom and hand washing facilities shall be provided at the main office building located at 12910 Weld County Road 13. 27. Should noxious weeds exist on the property, or become established as a result of the proposed development, the applicant/landowner shall be responsible for controlling the noxious weeds, pursuant to Section 15-1-10, Articles I and II, of the Weld County Code. 28. The landscaping on site shall be in compliance and maintained in accordance with the approved Landscape Plan for Amended Use by Special Review Permit#248. 29. The property owner or operator shall be responsible for complying with the Design Standards of Section 23-2-240, Weld County Code. 2001-2457 PL0791 DEVELOPMENT STANDARDS -VARRA COMPANIES, INC. (3RD AMUSR#248) PAGE 4 30. The property owner or operator shall be responsible for complying with the Operation Standards of Section 23-2-250, Weld County Code. 31. The property owner or operator shall be responsible for complying with the Supplementary Regulations for Solid Waste Disposal Sites,as described in Section 23-4-380,Weld County Code. 32. Personnel from the Weld County Departments of Public Health and Environment and Planning Services shall be granted access onto the property at any reasonable time in order to ensure the activities carried out on the property comply with the Development Standards stated herein and all applicable Weld County regulations. 33. The Use by Special Review area shall be limited to the plans shown hereon and governed by the foregoing standards and all applicable Weld County regulations. Substantial changes from the plans or Development Standards as shown or stated shall require the approval of an amendment of the Permit by the Weld County Board of County Commissioners before such changes from the plans or Development Standards are permitted. Any other changes shall be filed in the office of the Department of Planning Services. 34. The property owner or operator shall be responsible for complying with all of the foregoing Development Standards. Noncompliance with any of the foregoing Development Standards may be reason for revocation of the Permit by the Board of County Commissioners. Additional notes to be placed on the plat: 1. The placement of coal ash under saturated conditions is not without risk, therefore, the circumstances which would terminate this project must be clearly defined, understood, and agreed to by all parties. In addition, conceptual plans to be implemented, if impact to ground water occurs, shall be reviewed and approved by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. 2. Varra Companies, Inc., has requested to use 5.0 mg/I as a standard for boron. Regulation No. 41, The Basic Standards for Ground Water states, "the applicable standard for boron is 5.0 mg/I where a party can demonstrate that a crop watering use of groundwater is not reasonably expected." A rigorous ground water monitoring program has been established for the pilot project. Additionally, the volume of boron potentially generated by the pilot project is small. The pilot project meets the general criteria necessary to apply the 5.0 mg/I boron standard. However, should the pilot project demonstrate the feasibility of disposing of fly ash in a saturated media, reassessment of the boron standard shall be necessary before large-scale disposal operations begin to protect agricultural use of the ground water in the area. 2001-2457 PL0791 RESOLUTION RE: APPROVE SITE SPECIFIC DEVELOPMENT PLAN AND 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 FOR A SOLID WASTE DISPOSAL FACILITY (COAL ASH BURIAL PROJECT) IN THE A(AGRICULTURAL) ZONE DISTRICT -VARRA OMPANIES, INC. WHEREAS, the Board of County Commissioners of Weld County, Colorado, pursuant to Colorado state and the Weld County Home Rule Charter, is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS, the Board of County Commissioners held a public hearing on the 19th day of September, 2001t the hour of 10:00 a.m. in the Chambers of the Board for the purpose of hearing the applicatio of Varra Companies, Inc., 12910 Weld County Road 13, Longmont, Colorado 80504, for a Site Specific Development Plan and 3rd Amended Use by Special Review Permit#248 for a olid Waste Disposal Facility (coal ash burial project) in the A (Agricultural) Zone Distric n the following described real estate, to-wit: NW1/4 ofection 31, Township 3 North, Range 67 West of the nth P.M., Weld County, Colorado WHEREAS, said applicant wa represented by Joby Adams, Colorado Groundwater Resource Services, P.O. Box 1489, Fort'Collins, Colorado 80524, at said hearing, and WHEREAS, Section 23-2-230 of the Weld County Code provides standards for review of said 2nd Amended Use by Special Review Permit, and WHEREAS, the Board of County Commissioners heard all of the testimony and statements of those present, studied the request of the applicant and the recommendations of the Weld County Planning Commission and all of the exhibits and evidence presented in this matter and, having been fully informed, finds that this request shall be approved for the following reasons: 1. The submitted materials are in compliance with the application requirements of Section 23-2-260 of the Weld County Code. 2. It is the opinion of the Board of County Commissioners that the applicant has shown compliance with Section 23-2-230.B of the Weld County Code as follows: a. Section 23-2-230.B.1 -- The proposed use is consistenfwith Chapter 22 and any other applicable code provisions or ordinances in•effect. The Solid Waste Disposal Facility is for a pilot project to determine the applicability of coal ash as a fill product for the reclamation of gravel mining quarries. This application is an amendment to 2nd Amended Use by Special Review Permit#248, which allows for gravel mining in the northwest quarter of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado. Chapter 22 of the Weld County Code, Comprehensive Plan, Section 22-5-70, lists five Goals for Commercial/Mineral Resources. The original Use by Special Review 2001-2457 • �2- A1L( P 4,A Pep PL0791 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 -VARRA COMPANIES, INC. PAGE 2 Permit#248 and it's subsequent amendments were found in conformance with the Comprehensive Plan Goals and Policies for Commercial/Mineral Resources. This proposal will conform to, and \\ remain compatible with, all of the Commercial/Mineral Resources Goals and Policies. Section 23-2-230.8.2 —The proposed use is consistent with the intent of the A (Agricultural) Zone District. Section 23-3-40.1 of the Weld County ,\ Code provides for Solid Waste Disposal sites and facilities, subject to the \additional requirements of Section 23-4-380, as a Use by Special Review iithe A (Agricultural) Zone District. This project is also directly related to the.reclamation of a gravel mining operation, which is a use permitted by Section 23-3-40.A. In accordance with Section 30-20-100.5, C.R.S., a Certifib to of Designation is required. The Certificate of Designation shall not be deemed approved until or unless a Use by Special Review Permit has been approved by the Board of County Commissioners where required by Ctiapter 23 of the Weld County Code. c. Section 23-2-23048.3 —The uses which will be permitted will be compatible with theexisting surrounding land uses. Surrounding land uses are primarily agricultural uses and existing mining operations. The closest residential structure is approximately one mile to the south, with a farm and existing structures north and adjacent to the Varra property. The applicant is required to\kiave a Well Monitoring Plan, which is to be approved by both the State of.Colorado and the Weld County Department of Public Health and Environment. The applicant has indicated that although the Monitoring Plan requires the monitoring wells be placed fifty feet from the pilot project trench, indicator monitoring wells will also be placed ten to fifteen feet, approximately twenty-five feet, and approximately forty feet from the trench;\The placing of the indicator monitoring wells between the fifty-foot wells ensures early detection of contaminants in the ground water. All other compatibility issues concerning truck traffic, landscaping/buffering and dust are addressed in the Conditions of Approval and Development Standards. d. Section 23-2-230.8.4 —The uses which will be permitted will be compatible with future development of the surrounding area as permitted by the existing zoning and with the future development as.projected by Chapter 22 of the Weld County Code and any other applicable code provisions or ordinances in effect, or the adopted Master Plans of affected municipalities. The Towns of Firestone and Mead were sent referrals for this application on December 8, 1998, and again on July 13, 2001. The Town of Firestone did not return the referral on either occasion and the Town of Mead indicated no conflicts with its interests through a referral response dated December 15, 1998. 2001-2457 PL0791 3RD AMENDED USE BY SPECIAL REVIEW PERMIT #248 - VARRA COMPANIES, INC. PAGE 3 e. Section 23-2-230.B.5—The application complies with Article V of the Weld County Code. The property does lie within the One Hundred (100) Year Flood Plain, as shown on FIRM Community Panel Map number 080266-0855C, dated September 28, 1982. Approximately four hundred tons of fly ash will be placed in a trench measuring ten feet wide, one hundred feet long and ten feet deep. The trench is considered development in the flood plain and a Flood Hazard Development Permit will be required as a Condition of Approval. Effective December 1, 1999, wilding Permits issued on the lot will be required to adhere to the fee st?ucture of the Southwest Weld Road Impact Program Area 3. No structures are being proposed, other than the trench as described above; however{ as a Condition of Approval, the applicant shall contact the Weld County Department of Building Inspection for any building permit requirements. f. Section 23-2-230,8.6 —The applicant has demonstrated a diligent effort to conserve prime'agricultural land in the locational decision for the proposed use. The property has an existing mining permit (2nd Amended USR-248)as stated previously, and this proposal is a pilot project for the reclamation\of that permit. No farmground will be taken out of production for this use.. g. Section 23-2-230.B.7—The Design Standards (Section 23-2-240, Weld County Code), Operation Standards (Section 23-2-250, Weld County Code), Conditions of Approval, and Development Standards ensure that there are adequate provisions for the protection of the health, safety, and welfare of the inhabitants of the neighborhood and County. h. Section 23-4-380 — Solid waste sites and facilities, or hazardous waste disposal sites, Supplementary District Regulations will be enforced through the Conditions of Approval and Development Standards. NOW, THEREFORE, BE IT RESOLVED by the Board of County Commissioners of Weld County, Colorado, that the application of Varra Companies, Inc., for a Site Specific Development Plan and 3rd Amended Use by Special Review Permit #248 for a Solid Waste Disposal Facility (coal ash burial project) in the A (Agricultural) Zone District on the hereinabove described parcel of land be, and hereby is, granted subject to the following conditions: 1. The attached Development Standards for the Use by Special Review Permit shall be adopted and placed on the Use by Special Review Plat prior to recording. The completed plat shall be delivered to the Weld County Department of Planning Services and be ready for recording in the Weld County Clerk and Recorder's Office within 60 days of approval by the Board of County Commissioners. 2001-2457 PL0791 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 -VARRA COMPANIES, INC. PAGE 4 2. Prior to recording the plat: A. The applicant shall submit a Comprehensive Site Specific Ground Water Investigation Report to the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment for review and approval. Written evidence of such shall be submitted to the Department of Planning Services. The investigation shall i clude, at a minimum: 1) A description of the ground water flow rate, and ground water flow irection, including seasonal fluctuations in ground water flow. 2) A detailed description of materials comprising the uppermost aquifer, including the lithology, thickness, hydraulic conductivity, porosity*d effective porosity, 3) An evaluah!t of local ground water quality. Analytical parameters must be identlral to those from the column test. B. A Comprehensive Site Specific Ground Water Monitoring Plan must be submitted and approved by\Weld County Department of Public Health and Environment and the Colrado Department of Public Health and Environment. At a minimum, theePlan shall address the location and purpose of all monitoring points, monitoring frequency, monitoring parameters, analytical methods, reporting frequencies, etc. Written evidence of such shall be submitted to the Department of Planning Services. N C. The applicant shall provide evidence to theeld County Department of Public Health and Environment that an appropriate financial assurance mechanism has been established in accordance' ith The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). Written evidence of such shall be submitted to the DI7rtment of Planning Services. 4 . D. The applicant shall provide evidence that all issues described in the May 23, 2001, letter from the Colorado Division of Minerals`and Geology have been addressed. Written evidence of such shall be submitted to the Department of Planning Services. ` E. The applicant shall submit a plan for controlling fugitive dust during-fly ash placement activities. The plan must be reviewed and approved by the Weld County Department of Public Health and Environment. At a minimum, the plan shall address on-site controls, as well as controls that will be implemented during hauling activities. Written evidence of such shall be submitted to the Department of Planning Services. 2001-2457 PL0791 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 -VARRA COMPANIES, INC. PAGE 5 F, If applicable, the applicant shall obtain an emissions permit from the Air Pollution Control Division of the Colorado Department of Public Health and Environment. A copy of the permit, or written evidence that the \ permit is not required, shall be submitted to the Department of Planning \ Services. G. The applicant shall attempt to address the concerns and requirements of t p Colorado Division of Wildlife. Written evidence of such shall be submitted to the Department of Planning Services. H. The applicant shall submit written evidence to the Department of Planning Services showing conformance with the Colorado Division of Minerals and`,Qeology Mining and Reclamation Plan for this site. I. The applicant shall attempt to address the requirements of the Longmont Soil Conservation District. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. N J. The applicant shall withdraw the application request for a Site Specific Development Plan and Second Amended Use by Special Review Permit#248. \ 3. Prior to operation: A. The applicant shall apply, and be approved, for a Flood Hazard Development Permit for any development'thiat will increase or decrease the base flood elevation in the flood plain as,delineated on FIRM Community Panel Map # 080266-0855C, dated.September 28, 1982. B. The applicant shall contact the Weld County Department of Building Inspection regarding any Uniform Building Code requirements for the proposed facility. C. Any signage on the property shall comply with Section 23-4-90, Weld County Code, and have approved building permits if required.. 4. The Use by Special Review activity shall not occur, nor shall any building or electrical permits be issued on the property, until the Use by Special Review plat is ready to be recorded in the office of the Weld County Clerk and Recorder. 3 2001-2457 PL0791 3RD AMENDED USE BY SPECIAL REVIEW PERMIT#248 - VARRA COMPANIES, INC. PAGE 6 The above arid`foregoing Resolution was, on motion duly made and seconded, adopted by the following vote on`the 19th day of September, A.D., 2001. \• BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO ATTEST: Li/ Ell, ;'; }s .. EXCUSED DATE OF SIGNING (AYE) At N,N, . J. eile, Char Weld County Clerk to the y ' 'µ4ti k,{.k (AYE) :'- 'Glenn Vaad, ro-T _ BY: r- , •1 !! , Deputy Clerk to the Boar• •, I /—..i= (NAY) W₹lIi . Jerke APPROVED AS Ti.D r AYE) ga, id, Lan aunty Attorn y k AYE Robert , Masden Date of signature: g7 • 2001-2457 PL0791 SITE SPECIFIC DEVELOPMENT PLAN SPECIAL REVIEW PERMIT DEVELOPMENT STANDARDS VARRA COMPANIES, INC. 3RD AMUSR#248 1. The Site Spedific Development Plan and 3rd Amended Use by Special Review Permit is for a Solid Waste Disposal Facility(coal ash burial project)in the A(Agricultural)Zone District, as indicated in the`application materials on file and subject to the Development Standards stated hereon. 2. Approval of this plan may- \create a vested property right pursuant to Section 23-8-10 of the Weld County Code. \.. 3. The pilot project shall be limiteit.to approximately 400 tons of fly ash that will be placed in a trench measuring 10 feet wide;i00 feet long, and 10 feet deep. 4. There shall be a single point of ingress and egress to the disposal site. 5. The construction of the disposal trench shall be supervised by a professional engineer. A construction completion report shall be submitted which shows the surveyed location of the trench segment that is constructed. The report shall also identify soil profile and evaluate conditions discovered during excavation. 6. All stockpile overburden, soil, and associated m,erials shall be managed to prevent nuisance conditions. The facility operator shall comply with the Soil Conservation District requirements for erosion control, seeding stockpiles, fertilizing, and seedbed preparation. 7. Ash should not be stockpiled longer than 72 hours after receipt at the site. Any stockpiled ash shall be underlaid and covered with plastic. 8. The project life shall be determined by the results of field and laboratory data after evaluation by the Weld County Department of Public Health and.'environment and the Colorado Department of Public Health and Environment. 9. The facility shall conduct all monitoring activities as described in the approved Groundwater Monitoring Plan. 10. Background water quality levels should be accounted for when considering action levels. With exception to boron (see additional notes to be placed on plat), the most stringent groundwater standards promulgated under The Basic Standards for Ground Water, Regulation No. 41 (5CCR 1002-41), shall be used when determining if a standard is exceeded. If a standard is exceeded at a point of compliance (POC)well and confirmation sampling validates the exceedence, remedial measures shall be implemented. 11. The Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall have the option of collecting split samples from each ground water monitoring well. 2001-2457 PL0791 DEVEL PMENT STANDARDS -VARRA COMPANIES, INC. (3RD AMUSR #248) PAGE 2 12. The ap licant shall submit all laboratory results to the Colorado Department of Public Health and Environment and the Weld County Department of Public Health and Environmewith seven (7)days of receipt. If any standard is exceeded, the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall be notified within 48 hours. 13. Operation inspecti reports of the entire facility shall be made on a quarterly basis for the life of the pilot project. The inspection report shall be signed by a professional engineer. The engineer shall certify the operation is progressing in accordance with all aspects of the approved Use by Special. Review Permit and Certificate of Designation. A signed copy of the report shall be submitt to the Colorado Department of Public Health and Environment and Weld County Departm nt of Public Health and Environment. ,l 14. The facility operator shall maintain the following records to be available for review at any reasonable time by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment: a. Quarterly operations inspection'reports b. Volume of ash disposed ti, c. Results of water quality monitoring .y d. Laboratory results for fly ash analyses 15. The facility shall be operated in a manner to control fugitive dust and fly ash at all times. All operations shall be conducted in accordance Qu'th the approved Dust Control Plan. Additional dust abatement measures shall be imp€eented at the request of the Weld County Department of Public Health and Environment in'the event it is determined that dust is a nuisance condition. 16. The maximum permissible noise level shall not exceed the light industrial limit of 70 db(A), as measured according to Section 25-12-102, C.R.S. 17. The owner and/or facility operator shall notify representatives of the•Colorado Department of Public Health and Environment, Weld County Department of-,Public Health and Environment, and Department of Planning Services of any proposed oil and gas drilling within the Use by Special Review Permit area. 18. The facility shall comply with The Regulations Pertaining to Solid Waste, Disposal Sites and Facilities (6 CCR 1007-2), the Weld County Code, and the Rules and Regulations of the Colorado Division of Minerals and Geology. 19. The facility shall maintain evidence that an appropriate financial assurance mechanismahas been secured in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). 2001-2457 PL0791 D ELOPMENT STANDARDS -VARRA COMPANIES, INC. (3RD AMUSR #248) PA 3 20. A tal sign shall be posted at the facility entrance. The sign shall be a minimum of three feet i width and four feet in length. The sign shall state the following: a. N e of operator b. Typ of project c. Emer ncy phone numbers of the facility operator 21. The applicant sh ll submit a copy of the results and findings of the pilot project to the Central Weld CountyWater District. 22. The applicant shall ntify the Department of Army, Corps of Engineers, for proper Department of Army permits or changes in permit requirements pursuant to Section 404 of the Clean Water Act, if awork associated with this proposal requires the placement of dredged or fill material, an dNf any excavation associated with a dredged or fill project, either temporary or permanent, iiwaters of the United States,occurs at this site. Any other requirements of the Corps of Enginers shall be addressed by the applicant and evidence submitted to the Department of Planning Services. 23. The amendment to this Use by Special Review Permit is only for the pilot project of a Solid Waste Disposal Site and Certificate of'`Designation. All other State and Federal requirements, Conditions of Approval and Development Standards for the subsequent Use by Special Review Permits (USR #248, Amended USR #248, and 2nd Amended USR #248) still apply to the mining operation and the' rooperties which they are permitted on. 24. Effective December 1, 1999, Building Permits issued on the property will be required to adhere to the fee structure of the Southwest Weld Roai Impact Program Area 3. 25. Hours of operation shall be limited to the hours of daylight,except for emergency situations. Hours of operation may be extended with specific permission fom the Weld County Board of County Commissioners. This restriction shall not apply to ope ation of the administrative or executive offices or repair and maintenance of the operation. \ 26. Restroom and hand washing facilities shall be provided at the main office building located at 12910 Weld County Road 13. 1 27. Should noxious weeds exist on the property, or become established as a result of the proposed development, the applicant/landowner shall be responsible for controlling the noxious weeds, pursuant to Section 15-1-10, Articles I and II, of the Weld County Code. 28. The landscaping on site shall be in compliance and maintained in accordance with,the approved Landscape Plan for 2nd Amended Use by Special Review Permit #248. 29. The property owner or operator shall be responsible for complying with the Design Standards of Section 23-2-240, Weld County Code. 2001-2457 PL0791 DEVELOPMENT STANDARDS - VARRA COMPANIES, INC. (3RD AMUSR #248) PAGE 4 30. The property owner or operator shall be responsible for complying with the Operation tandards of Section 23-2-250, Weld County Code. 31. The operty owner or operator shall be responsible for complying with the Supplementary Regulations for Solid Waste Disposal Sites,as described in Section 23-4-380,Weld County Code. 32. Personnel from the Weld County Departments of Public Health and Environment and Planning Servic s shall be granted access onto the property at any reasonable time in order to ensure t activities carried out on the property comply with the Development Standards stated herein and all applicable Weld County regulations. 33. The Use by Special Review area shall be limited to the plans shown hereon and governed by the foregoing standards and all applicable Weld County regulations. Substantial changes from the plans or Development Standards as shown or stated shall require the approval of an amendment `of the Permit by the Weld County Board of County Commissioners before such changes from the plans or Development Standards are permitted. Any other changes shall be filed in the office of the Department of Planning Services. 34. The property owner or operator shall be responsible for complying with all of the foregoing Development Standards. Noncompliance with any of the foregoing Development Standards may be reason for revocation of the Permit by the Board of County Commissioners. ti Additional notes to be placed on the plat: • 1. The placement of coal ash under saturated conditions`i not without risk, therefore, the circumstances which would terminate this project must be dearly defined, understood, and agreed to by all parties. In addition, conceptual plans to be implemented, if impact to ground water occurs, shall be reviewed and approved by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. • 2. Varra Companies, Inc., has requested to use 5.0 mg/I as a standard for`t.aron. Regulation No. 41, The Basic Standards for Ground Water states, "the applicable standard for boron is 5.0 mg/I where a party can demonstrate that a crop watering use of groundwater is not reasonably expected." A rigorous ground water monitoring program has been established for the pilot project. Additionally, the volume of boron potentially generated by the pilot project is small. The pilot project meets the general criteria necessary to apply the 5.0 mg/I boron standard. However, should the pilot project demonstrate the feasibility of disposing of fly ash in a saturated media, reassessment of the boron standard shall be necesary before large-scale disposal operations begin to protect agricultural use of the ground water in the area. 2001-2457 PL0791 SITE SPECIFIC DEVELOPMENT PLAN SPECIAL REVIEW PERMIT DEVELOPMENT STANDARDS Varra Companies/Colorado Groundwater Resources Services 3rd AmUSR-248 1 . The Site Specific Development Plan and Special Use Permit is for a Solid Waste Disposal Facility and Certificate of Designation (Coal Ash Burial Project) in the A (Agricultural) Zone District, as indicated in the application materials on file and subject to the Development Standards stated hereon. (Department of Planning Services) 2. Approval of this plan may create a vested property right pursuant to Section 23-8-10 of the Weld County Code. (Department of Planning Services) 3, The pilot project shall be limited to approximately 400 tons of fly ash that will be placed in a trench measuring 10 feet wide, 100 feet long and 10 feet deep. (Department of Public Health and Environment) 4. There shall be a single point of ingress and egress to the disposal site. (Department of Public Health and Environment) 5. The construction of the disposal trench shall be supervised by a Professional Engineer. A construction completion report shall be submitted which shows the surveyed location of the trench segment that is constructed. The report shall also identify soil profile and evaluate conditions discovered during excavation. (Department of Public Health and Environment) 6. All stockpile overburden, soil, and associated materials shall be managed to prevent nuisance conditions. The facility operator shall comply with the Soil Conservation District requirements for erosion control, seeding stockpiles,fertilizing, and seedbed preparation. (Department of Public Health and Environment) 7, No stockpiling of fly ash shall be allowed on site. All fly ash shall be placed in the trench upon receipt at the facility. (Department of Public Health and Environment) 8. The project life shall be determined by the results of field and laboratory data after evaluation by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. (Department of Public Health and Environment) 9, The facility shall conduct all monitoring activities as described in the approved groundwater monitoring plan. (Department of Public Health and Environment) 10. Background water quality levels should be accounted for when considering action levels. With exception to boron (see additional notes to be placed on plat), the most stringent groundwater standards promulgated under The Basic Standards for Ground Water, Regulation No. 41 (5CCR 1002- 41), shall be used when determining if a standard is exceeded. If a standard is exceeded at a point of compliance (POC) well and confirmation sampling validates the exceedence, remedial measures shall be implemented. (Department of Public Health and Environment) 11 . The Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall have the option of collecting split samples from each ground water monitoring well. (Department of Public Health and Environment) 12. The applicant shall submit all laboratory results to the Colorado Department of Public Health and Environment and the Weld County Department of Public Health and Environment with seven (7) days CGRSNarra,3rdAmUSR-248 Page 6 of receipt. If any standard is exceeded,the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall be notified within 48 hours. (Department of Public Health and Environment) 13. Operation inspection reports of the entire facility shall be made on a quarterly basis for the life of the pilot project. The inspection report shall be signed by a Professional Engineer. The engineer shall certify the operation is progressing in accordance with all aspects of the approved Special Review Permit and Certificate of Designation. A signed copy of the report shall be submitted to the Colorado Department of Public Health and Environment and Weld County Department of Public Health and Environment. (Department of Public Health and Environment) 14. The facility operator shall maintain the following records to be available for Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment review at any reasonable time: a) Quarterly operations inspection reports; b) Volume of ash disposed; c) Results of water quality monitoring; d) Laboratory results for fly ash analyses. (Department of Public Health and Environment) 15. The facility shall be operated in a manner to control fugitive dust and fly ash at all times. All operations shall be conducted in accordance with the approved dust control plan. Additional dust abatement measures shall be implemented at the request of the Weld County Department of Public Health and Environment in the event it is determined that dust is a nuisance condition. (Department of Public Health and Environment) 16 The maximum permissible noise level shall not exceed the light industrial limit of 70 dB(A), as measured according to Section 25-12-102, C.R.S. (Department of Public Health and Environment) 17. The owner and/or facility operator shall notify representatives of the Colorado Department of Public Health and Environment,Weld County Department of Public Health and Environment, and Department of Planning Services of any proposed oil and gas drilling within the Special Review Permit Area. (Department of Public Health and Environment) 18. The facility shall comply with The Regulations Pertaining to Solid Waste, Disposal Sites and Facilities (6 CCR 1007-2), the Weld County Code and the Rules and Regulations of the Colorado Division of Minerals and Geology. (Department of Public Health and Environment) 19. The facility shall maintain evidence that an appropriate financial assurance mechanism has been secured in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). (Department of Public Health and Environment) 20. A metal sign shall be posted at the facility entrance. The sign shall be a minimum of three feet in width and four feet in length. The sign shall state the following: a. Name of operator; b. Type of project; c. Emergency phone numbers of the facility operator. (Department of Public Health and Environment) 21. The applicant shall submit a copy of the results and findings of the pilot project to the Central Weld County Water District. (Department of Planning Services) CGRSNarra,3rdAmUSR-248 Page 7 22. If any work associated with this proposal requires the placement of dredged or fill material, and any excavation associated with a dredged or fill project, either temporary or permanent, in waters of the United States, at this site, the Department of the Army, Corps of Engineers shall be notified by the applicant for proper Department of the Army permits or changes in permit requirements pursuant to Section 404 of the Clean Water Act. Any other requirements of the Corps of Engineers shall be addressed by the applicant and evidence submitted to the Department of Planning Services. (Army Corps of Engineers) 23. The amendment to this Special Review Permit is only for the pilot project of a Solid Waste Disposal Site and Certificate of Designation. All other state and federal requirements, Conditions of Approval and Development Standards for the subsequent Special Review Permits (USR-248, AmUSR248 and 2nd AmUSR-248) still apply to the mining operation and the properties which they are permitted on. (Department of Planning Services) 24. Effective December 1, 1999, Building Permits issued on the property will be required to adhere to the fee structure of the Southwest Weld Road Impact Program Area 3. (Department of Planning Services) 25. Hours of operation shall be limited to the hours of daylight, except for emergency situations. Hours of operation may be extended with specific permission from the Weld County Board of County Commissioners. This restriction shall not apply to operation of the administrative or executive offices or repair and maintenance of the operation. (Department of Planning Services) 26. Restroom and hand washing facilities shall be utilized at the main office building located at 12910 Weld County Road 13. (Weld County Department of Planning Services) 27. Should noxious weeds exist on the property or become established as a result of the proposed development,the applicant/landowner shall be responsible for controlling the noxious weeds, pursuant to Section 15-1-10, Article I and II, of the Weld County Code. (Department of Planning Services) 28. The landscaping on site shall be in compliance and maintained in accordance with the approved Landscape Plan for 2"dAmUSR-248. (Department of Planning Services) 29. The property owner or operator shall be responsible for complying with the Design Standards of Section 23-2-240, Weld County Code. 30. The property owner or operator shall be responsible for complying with the Operation Standards of Section 23-2-250, Weld County Code. 31. The property owner or operator shall be responsible for complying with the Supplementary Regulations for Solid Waste Disposal Sites, as described in Section 23-4-380, Weld County Code. 32. Personnel from the Weld County Departments of Public Health and Environment and Planning Services shall be granted access onto the property at any reasonable time in order to ensure the activities carried out on the property comply with the Development Standards stated herein and all applicable Weld County regulations. 33. The Special Review area shall be limited to the plans shown hereon and governed by the foregoing standards and all applicable Weld County regulations. Substantial changes from the plans or Development Standards as shown or stated shall require the approval of an amendment of the Permit by the Weld County Board of County Commissioners before such changes from the plans or Development Standards are permitted. Any other changes shall be filed in the office of the Department of Planning Services. CGRSA/arra,3rdAmUSR-248 Page 8 34. The property owner or operator shall be responsible for complying with all of the foregoing Development Standards. Noncompliance with any of the foregoing Development Standards may be reason for revocation of the Permit by the Board of County Commissioners. Additional notes to be placed on the plat: 1. The placement of coal ash under saturated conditions is not without risk, therefore, the circumstances which would terminate this project must be clearly defined, understood and agreed to by all parties. In addition, conceptual plans to be implemented if impact to ground water occurs shall be reviewed and approved by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. 2. Varra has requested to use 5.0 mg/I as a standard for boron. Regulation No. 41, The Basic Standards for Ground Water states"the applicable standard for boron is 5.0 mg/I where a party can demonstrate that a crop watering use of groundwater is not reasonably expected." A rigorous ground water monitoring program has been established for the pilot project. Additionally, the volume of boron potentially generated by the pilot project is small. The pilot project meets the general criteria necessary to apply the 5.0 mg/I boron standard. However, should the pilot project demonstrate the feasibility of disposing of fly ash in a saturated media, reassessment of the boron standard shall be necessary before large-scale disposal operations begin to protect agricultural use of the ground water in the area. CGRSNarra,3rdAmUSR-248 Page 9 SPECIAL REVIEW PERMIT ADMINISTRATIVE REVIEW COLORADO Planner: Julie A. Chester Case Number: 3n° AmUSR-248 Hearing Date: August 21, 2001 Applicant: Varra Companies 12910 Weld County Road 13 Longmont, CO 80504 Joby Adams, Colorado Groundwater Resources Services P.O. Box 1489 Ft. Collins, CO 80524 Request: A Site Specific Development Plan and a Special Review Permit for a Solid Waste Disposal Facility and Certificate of Designation (Coal Ash Burial Project) in the A (Agricultural) Zone District Legal Description: Part of the NW4 of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado Location: Approximately 1/4 mile east of Weld County Road 13, one mile north of Weld County Road 26 Size of Parcel: 26 +1- acres Parcel Number: 1209-31-000049 THE DEPARTMENT OF PLANNING SERVICES' STAFF RECOMMENDS THAT THIS REQUEST BE APPROVED FOR THE FOLLOWING REASONS: 1. The submitted materials are in compliance with the application requirements of Section 23-2-260 of the Weld County Code. 2. It is the opinion of the Department of Planning Services' staff that the applicant has shown compliance with Section 23-2-220 of the Weld County Code as follows: a. Section 23-2-220.A.1 --The proposed use is consistent with Chapter 22 and any other applicable code provisions or ordinances in effect. The Solid Waste Disposal Facility is for a pilot project to determine the applicability of coal ash as a fill product for the reclamation of gravel mining quarries. This application is an amendment to 2n°AmUSR-248, which allows for gravel mining in the northwest quarter of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. Chapter 22, the Comprehensive Plan of the Weld County Code, Section 22-5-70 lists five Goals for Commercial/Mineral Resources. The original Special Review Permit (USR-248) and it's subsequent amendments were found in conformance with the Comprehensive Plan Goals and Policies for Commercial/Mineral Resources. This proposal will conform to and remain compatible with all of the Commercial/Mineral Resources Goals and Policies. CGRSNarra,3rdAmUSR-248 Page 2 b Section 23-2-220.A.2--The proposed use is consistent with the intent of the A(Agricultural)Zone District. Section 23-3-40.1. of the Weld County Code provides for Solid Waste Disposal sites and facilities, subject to the additional requirements of Section 23-4-380, as a Use by Special Review in the A (Agricultural) Zone District. This project is also directly related to the reclamation of a gravel mining operation, which is a use permitted by Section 23-3-40.A., in accordance with C.R.S. 30-20-100.5, a Certificate of Designation is required. The Certificate of Designation shall not be deemed approved until or unless a Use by Special Review Permit has been approved by the Planning Commission or the Board of County Commissioners where required by Chapter 23 of the Weld County Code. c. Section 23-2-220.A.3 -- The uses which will be permitted will be compatible with the existing surrounding land uses. Surrounding land uses are primarily agricultural uses and existing mining operations. The closest residential structure is approximately one mile to the south, with a farm and existing structures north and adjacent to the Varra property. The applicant is required to have a well monitoring plan, which is to be approved by both the State of Colorado and the Weld County Department of Public Health and Environment. The applicant has indicated that although the monitoring plan requires the monitoring wells be placed fifty feet from the pilot project trench, indicator monitoring wells will also be located ten to fifteen feet, approximately twenty-five feet and approximately forty feet from the trench. The placing of the indicator monitoring wells between the fifty foot wells ensures early detection of contaminants in the ground water. All other compatibility issues concerning truck traffic, landscaping/buffering and dust are addressed in the Conditions of Approval and Development Standards. d. Section 23-2-220.A.4 -- The uses which will be permitted will be compatible with future development of the surrounding area as permitted by the existing zoning and with the future development as projected by Chapter 22 of the Weld County Code and any other applicable code provisions or ordinances in effect, or the adopted Master Plans of affected municipalities. The Towns of Firestone and Mead were sent referrals for this application on December 8, 1998 and again on July 13, 2001. The Town of Firestone did not return their referral on either occasion and the Town of Mead indicated no conflicts with their interests on December 15, 1998. e. Section 23-2-220.A.5 -- The application complies with Article V of the Weld County Code. The property does lie within the 100 year flood plain, as shown on FIRM Community Panel Map number 080266-0855C, dated September 28, 1982. Approximately four hundred tons of fly ash will be placed in a trench measuring ten feet wide, one hundred feet long and ten feet deep. The trench is considered development in the flood plain and a Flood Hazard Development Permit will be required as a Condition of Approval. Effective December 1, 1999, Building Permits issued on the lot will be required to adhere to the fee structure of the Southwest Weld Road Impact Program Area 3. No structures are being proposed, other than the trench as described above, however, as a Condition of Approval, the applicant shall contact Weld County's Building Inspection Department for any building permit requirements. f. Section 23-2-220.A.6 -- The applicant has demonstrated a diligent effort to conserve prime agricultural land in the locational decision for the proposed use. The property has an existing mining permit (2"dAmUSR-248) as stated previously and this proposal is a pilot project for the reclamation of that permit. No farmground will be taken out of production for this use. g. Section 23-2-220.A.7--The Design Standards(Section 23-2-240,Weld County Code), Operation Standards (Section 23-2-250, Weld County Code), Conditions of Approval, and Development Standards ensure that there are adequate provisions for the protection of health, safety, and welfare of the inhabitants of the neighborhood and County. CGRSNarra,3rdAmUSR-248 Page 3 h. Section 23-4-380 - Solid waste sites and facilities or hazardous waste disposal sites supplementary district regulations will be enforced through the Conditions of Approval and Development Standards. This recommendation is based, in part, upon a review of the application materials submitted by the applicant, other relevant information regarding the request, and responses from referral entities. The Department of Planning Services' staff recommendation for approval is conditional upon the following: 1 . The attached Development Standards for the Special Review Permit shall be adopted and placed on the Special Review Plat prior to recording. The completed plat shall be delivered to the Weld County Department of Planning Services and be ready for recording in the Weld County Clerk and Recorder's Office within 60 days of approval by the Board of County Commissioners. (Department of Planning Services) 2. Minimum of 10 Days Prior to scheduling the Board of County Commissioner's hearing: A. The applicant shall submit, to the Weld County Department of Planning Services, either a copy of an agreement with the property's mineral owners,stipulating that the oil and gas activities have adequately been incorporated into the design of the site or show evidence that an adequate attempt has been made to mitigate the concerns of the mineral owners. (Department of Planning Services) 3. Prior to recording the plat: A. The applicant shall submit a comprehensive site-specific ground water investigation report to the Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment for review and approval. Written evidence of such shall be submitted to the Department of Planning Services. The investigation shall include, at a minimum: — A description of the ground water flow rate, ground water flow direction including seasonal fluctuations in ground water flow; - A detailed description of materials comprising the uppermost aquifer including the lithology, thickness, hydraulic conductivity, porosity and effective porosity; - An evaluation of local ground water quality. Analytical parameters must be identical to those from the column test. (State of Colorado and Weld County Department of Public Health and Environment) B_ A comprehensive site-specific ground water monitoring plan must be submitted and approved by Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment. At a minimum, the Plan shall address the location and purpose of all monitoring points, monitoring frequency, monitoring parameters, analytical methods, reporting frequencies, etc. Written evidence of such shall be submitted to the Department of Planning Services. (Weld County Department of Public Health and Environment) C. The applicant shall provide evidence to the Weld County Department of Public Health and Environment that an appropriate financial assurance mechanism has been established in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities(6 CCR 1007-2). Written evidence of such shall be submitted to the Department of Planning Services. (Weld County Department of Public Health and Environment) CGRSNarra,3rdAmUSR-248 Page 4 D. The applicant shall provide evidence that all issues described in the May 23, 2001 letter from the Colorado Division of Minerals and Geology have been addressed. Written evidence of such shall be submitted to the Department of Planning Services. (Weld County Department of Public Health and Environment) E. The applicant shall submit a plan for controlling fugitive dust during fly ash placement activities. The plan must be reviewed and approved by the Weld County Department of Public Health and Environment. At a minimum, the plan shall address on-site controls as well as controls that will be implemented during hauling activities. Written evidence of such shall be submitted to the Department of Planning Services. (Weld County Department of Public Health and Environment) F. If applicable, the applicant shall obtain an emissions permit from the Air Pollution Control Division of the Colorado Department of Public Health and Environment. A copy of the permit or written evidence that the permit is not required shall be submitted to the Department of Planning Services. (Weld County Department of Public Health and Environment) G. The applicant shall attempt to address the concerns and requirements of the Colorado Division of Wildlife. Written evidence of such shall be submitted to the Department of Planning Services. (Colorado Division of Wildlife) H. The applicant shall amend the Road Maintenance and Improvements Agreement for USR-248, AmUSR-248 and/or 2ndAmUSR-248. The old agreement, dated in 1985, shall be updated to reflect current requirements. Written evidence of such shall be submitted to the Department of Planning Services. (Department of Public Works) I. The applicant shall submit written evidence to the Department of Planning Services, showing conformance with the Colorado Division of Minerals and Geology, Mining and Reclamation Plan for this site. (Colorado Division of Minerals and Geology) J_ The applicant shall attempt to address the requirements of the Longmont Soil Conservation District. Evidence of such shall be submitted in writing to the Weld County Department of Planning Services. (Longmont Soil Conservation District) 4. Prior to operation: A. The applicant shall apply for and be approved for a Flood Hazard Development Permit for any development that will increase or decrease the base flood elevation in the flood plain as delineated on FIRM Community Panel Map # 080266-0855C, dated September 28, 1982. (Department of Planning Services) B. The applicant shall contact the Weld County Building Inspection Department regarding any Uniform Building Code requirements for the proposed facility. (Weld County Department of Planning Services) C. Any signage on the property shall comply with Section 23-4-90, Weld County Code and have approved any building permits required. (Weld County Department of Planning Services) 5. The Special Review activity shall not occur nor shall any building or electrical permits be issued on the property until the Special Review plat is ready to be recorded in the office of the Weld County Clerk and Recorder. (Department of Planning Services) CGRSNarra,3rdAmUSR-248 Page 5 to(Tn,irj DEPARTMENT OF PLANNING SERVICES PHONE (970)353-6100, EXT.3540 FAX (970) 304-6498 1555 N. 17TH AVENUE COLORADO GREELEY, COLORADO 80631 August 2, 2001 Varra Companies 12910 WCR 13 Longmont, CO 80504 Subject: 3'AmUSR-248- Request for a 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Solid Waste Disposal Facility and Certificate of Designation(Coal Ash Burial Project)on a parcel of land described as Part of NW4 of Section 31,T3N, R67W of the 6th P.M., Weld County, Colorado. To Whom It May Concern: Your application and related materials for the request described above are being processed. I have scheduled a meeting with the Weld County Planning Commission for August 21, 2001, at 1:30 p.m. This meeting will take place in Room 210, Weld County Planning Department, 1555 N. 17th Avenue, Greeley, Colorado. It is recommended that you and/or a representative be in attendance to answer any questions the Planning Commission members may have. It is the policy of Weld County to refer an application to any town or municipality lying within three miles of the property or if the property is located within the comprehensive planning area of a town or municipality. Therefore, our office has forwarded a copy of the submitted materials to the Firestone and Mead Planning Commission for their review and comments. Please call Firestone at 303-833-3291 and Mead at 970-535- 4477 for further details regarding the date,time,and place of this meeting. It is recommended that you and/or a representative be in attendance at the Firestone and Mead Planning Commission meeting to answer any questions the Commission members may have with respect to your application. A representative from the Department of Planning Services will be out to the property a minimum of ten days prior to the hearing to post a sign adjacent to and visible from a publicly maintained road right-of-way which identifies the hearing time, date, and location. In the event the property is not adjacent to a publicly maintained road right-of-way, one sign will be posted in the most prominent place on the property and a second sign posted at the point at which the driveway (access drive) intersects a publicly maintained road right-of-way. The Department of Planning Services' staff will make a recommendation concerning this application to the Weld County Planning Commission. This recommendation will be available twenty-four(24)hours before the scheduled hearing. It is the responsibility of the applicant to call the Department of Planning Services'office before the Planning Commission hearing to make arrangements to obtain the recommendation. If you have any questions concerning this matter, please call. Respectfully, Julie Chester Planner III HDEPARTMENT OF PLANNING SERVICES PHONE (970) 353-6100, EXT.3540 FAX (970) 304-6498 1555 N. 17TH AVENUE COLORADO GREELEY, COLORADO 80631 July 13, 2001 Varra Companies 12910 WCR 13 Longmont, CO 80504 Subject: 3"d AmUSR-248- Request for a 3`'Amendment to a Site Specific Development Plan and Use by r Special Review Permit for a Coal Ash Burial Project on a parcel of land described as Part of NW4 of Section 31, T3N, R67W of the 6th P.M.,Weld County, Colorado. To Whom It May Concern: Your eppIleatlon and related materials for the request described above are being processed. I have scheduled a meeting with the Weld County Planning Commission for August 21, 2001, at 1.30 p.m. This meeting will take place in Room 210,Weld County Planning Department, 1555 N. 17th Avenue, Greeley, Colorado. 'Os recommended that you and/or a representative be in attendance to answer any questions the Planning Commission members may have. It is the policy of Weld County to refer an application to any town or municipality lying within three mites of the property or if the property is located within the comprehensive planning area of a town or municipality. Therefore, our office has forwarded a copy of the submitted materials to the Firestone and Mead Planning Commission for their review and comments. Please call Firestone at 303-833-3291 and Mead at 970-535- 4477 for further details regarding the date,time,and place of this meeting. It is recommended that you and/or a representative be in attendance at the Firestone and Mead Planning Commission meeting to answer any questions the Commission members may have with respect to your application. A representative from the Department of Planning Services will be out to the property a minimum of ten days prior to the hearing to post a sign adjacent to and visible from a publicly maintained road right-of-way which identifies the hearing time,date,and location. In the event the property is not adjacent to a publicly maintained road right-of-way, one sign will be posted in the most prominent place on the property and a second sign posted at the point at which the driveway(access drive) intersects a publicly maintained road right-of-way. The Department of Planning Services' staff will make a recommendation concerning this application to the Weld County Planning Commission, This recommendation will be available twenty-four(24)hours before the scheduled hearing. It is the responsibility of the applicant to call the Department of Planning Services'office before the Planning Commission hearing to make arrangements to obtain the recommendation. If you have any questions concerning this matter, please call. ectfutly, 4` 4 a(3311e Chester Planner III DEPARTMENT OF PLANNING SERVICES PHONE (970) 353-6100, EXT.3540 FAX (970) 352-6312 WELD COUNTY ADMINISTRATIVE OFFICES 1400 N. 17TH AVENUE i GREELEY, COLORADO 80631 IDc COLORADO December 8, 1998 Varra Companies, Inc. 12910 WCR 13 Longmont, CO 80504 Subject: 3rd AmUSR-248 - Request for a 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project on a parcel of land described as Part of the NW4 of Section 31, T3N, R67W of the 6th P.M,, Weld County, Colorado Dear Applicant: Your application and related materials for the request described above are being processed. I have scheduled a meeting with the Weld County Planning Commission for January 19, 1999, at 1:30 p m. This meeting will take place in Room 101, Commissioner's.Hearing Room, Weld County Centennial Center, 915 10th Street, Greeley, Colorado. It is recommended that you and/or a representative be in attendance to answer any questions the Planning Commission members may have. It is the policy of Weld County to refer an application to any town or municipality lying within three miles of the property or if the property is located within the comprehensive planning area of a town or municipality. Therefore, our office has forwarded copies of the submitted materials to the Firestone and Mead Planning Commissions for their review and comments. Please call Town of Firestone at 303-833-3291 and Town of Mead at 970-535-4477, for further details regarding the date, time, and place of these meetings. It is recommended that you and/or a representative be in attendance at the Firestone and Mead Planning Commission meeting to answer any questions the Commission members may have with respect to your application. A representative from the Department of Planning Services will be out to the property a minimum of ten days prior to the hearing to post a sign adjacent to and visible from a publicly maintained road right-of-way which identifies the hearing time, date, and location. In the event the property is not adjacent to a publicly maintained road right-of-way, one sign will be posted in the most prominent place on the property and a second sign posted at the point at which the driveway (access drive) intersects a publicly maintained road right-of-way. The Department of Planning Services' staff will make a recommendation concerning this application to the Weld County Planning Commission This recommendation will be available twenty-four(24) hours before the scheduled hearing. It is the responsibility of the applicant to call the Department of Planning Services' office before the Planning Commission hearing to make arrangements to obtain the recommendation. • if you have any questions concerning this matter, please call • Respectfy, VCCUCfn Ben Patton Planner pc: Joby Adams, CGRS, Inc., P.O. Box 1489, Ft. Collins, CO 80524 DEPARTMENT OF PUBLIC HEALTH & ENVIRONMENT 1 555 N. 17th Avenue Greeley, CO 8O631 WEBSITE: www.co.weld.eo,us ADMINISTRATION: (970) 304-6410 FAX: (970) 304-6412 PUBLIC HEALTH EDUCATION & NURSING: (970) 304-6420 FAX: (970) 304-6416 ENVIRONMENTAL HEALTH SERVICES: (970) 304-6415 COLORADO FAX: (970) 304-6411 February 20, 2002 Joby Adams CGRS, Inc. 1301 Academy Court Fort Collins, Colorado 80525 Subject: Groundwater Investigation Report, Varra Coal Ash Project, 3111) AMUSR -- 248, Site Specific GW Investigation Report Approval Letter Dear Mr. Adams: The Weld County Department of Public Health and Environment (WCDPHE) has completed its review of the Groundwater Investigation Report (the Report), dated December 2001, for the Varra Coal Ash Project. The pilot project is located on Varra Companies, Inc., 12910 Weld County Road 13, Longmont, Colorado, at an active gravel quarry in Weld County. The purpose of the report was to determine the actual ground water hydrology and background water quality of the pilot project. Based on the information provided in the Report, Roger Doaks' letter dated January 15, 2002, your response letter, dated January 16, 2002, and the modified figure 4 that you faxed to our office on January 23, 2002, WCDPHE has determined that the comprehensive site-specific ground water investigation has been adequately address. Please provide a signed hard copy of your January 16, 2002 correspondence on CGRS letterhead and Figure 4 modifications. If you have any questions, please do not hesitate to call me at (970) 304-6415, extension 2220. Sincerely, r.r Cindi Etcheverry Environmental Specialist Environmental Health Services cc: Trevor Jiricek, Director, Environmental Health Services Kim Ogle, Department of Planning Services Chris Varra, Varra Companies Roger Doak, Colorado Department of Public Health and Environment O:\ETCHIWASTE\VarraW20602gw fnvesllgatlon report doc ?B-07-2882 11:39 CURS INC 973 493 7986 P.31/32 CG P.D. Box 1489 Fort Collins, CO 80522 Facsimile Transmission (970)493-7780 -Phone (970)493-7986- Fax info©cgrs.corn—Email Www.cgrs,com Date: Pages (including cover): To: Fax Number: Company: cAztip Phone Number: s From: � (3104,/ �.. Title: Subject: UV Message wok l.2 CA s `rl Signed; NoriCa• The information contained in this facsimfie document is confidential and intended envy for the use of the person(e)or entity framed above. if the reader of dais message is not Ma intended re Want,you aro hereby notified that any dissemination,dislebuiion or copying of this communication rs strictly prohibit®d, if you have ruaeiveti(his fax in error,or if there are Problems of any kind with tine receipt of this fasw,please notify us IMM1=D1,47"eLYOf the above phone number WIT3ER1/Ef orrna)A6minwelank F91i Cav¢r,tlac FEB-07-2082 11:39 CGRS INC 970 493 7995 P.02/02 CGENVIRONrvIENTAL•CONSTRUCTION COMPLIANCE February 7, 2002 Mr. Kim Ogle Weld County Planning 1555 N. 17th Avenue Greeley, Colorado 80631 RE: Third Amended USA Permit#248 Project Initiation Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa' Dear Mr. Ogle: We have tentatively scheduled trenching and ash placement activities to commence on the morning of February 14, 2002. We understand that the Plat for this project has not been recorded due to an oversight, We respectfully request that the project be allowed to commence prior to the Plat being recorded. We understand that all requirements of the USR must be satisfied prior to project start-up. If you have any questions regarding this letter or require further information, please contact me at (970) 493-778Q, Sincerely, CGRS, I O. oby L Adams, P.G. P '- '•-I/Hydrogeologist cc: Mr. Chris Varra—Varra Companies c:\homo1W1NWORDWarraloglelettar.doc P.O. BOX 1489 R FORT COLLINS,COLORADO 80522 • PHONE: 970.493-7780 • FAX: 970493,7988 TOTAL P.02 NCIV-06-2001 10:49 CURS INC 970 493 7986 P.02/02 STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Department of Natural Rtw,iources 1313 Sherman St.,Room 215 D I V I S I O N OP Dauer,Colorado 80203 Phone:(303)866-3567 M 1 N RA LS S FAX!(303)832-8106 GEOLOGY RECLAMATION MINING-SAFETY November 2, 2001 13114 Owens C ovemoc Mr.Joby Adams, P.G. CORS Creg E W:+Ic Iles Executive Director PD Box 1489 Michael B,bong Fort Collins, CO 80522 Divkiorl Dfrechlr Subject: Extraction-of Coal Fly Ash Pilot Study Areafrom Permit; Varra. Companies,.M-74-052 Dear Mr. Adams, Your request of October 30, 2001 that the Division of Minerals and Geology extract the coal fly ash pilot project from the MLRB permit is granted. Your letter included a map, labeled Figure 3, showing the study area relative to the mine permit. On that map was an inset map,labeled "Exhibit D Coal ash trench and monitoring well location plan,"upon which are shown several "proposed monitoring well location" points. You indicated that Varra wishes to extract the area encompassing the coal ash trench and monitoring well network,for a total of 1.43 acres. Unless the Division hears from you or Varra Companies further, we shall presume that the extraction area will circumscribe all of the drill holes shown on the Exhibit D inset map. Please assure that the exclusion area is marked in the field. The Division remains interested in this project and its progress, and appreciates Varra's willingness to keep us apprised with periodic updates and reports. Sincerely, Harry H. Posey Cc Roger Doak, CDPHE Carl Mount TOTAL P.02 CGENVIRONMENTAL •CONSTRUCTION • COMPLIANCE Weld County Planning Dept. October 30, 2001 NOV , 4°(-). N Mr. Harry Posey Division of Minerals and Geology RECEIVED 1313 Sherman Street Denver, CO 80203 RE: Varra Coal Ash Project Extraction of Pilot Project Study Area Weld County Colorado CGRS No. 1-135-2755 Dear Mr. Posey: The following summarizes our telephone conversation of October 29, 2001 regarding permit requirements for the Varra Coal Ash Project. > There is a Memorandum of Understanding (MOU) between Division of Minerals and Geology (DMG) and Colorado Department of Public Health and Environment (CDPH&E) which address the issues of imported waste at mine sites, including fly ash. However, it is your understanding that DMG does not recognize the MOU for a variety of reasons, including the state's current ability to bond various projects. > Varra Companies wishes to extract the pilot project study area from its DMG permit area in order to satisfy requirements of the Use by Special Review permit. ➢ The extracted area will consist of the area occupied by the coal ash trench and monitoring well network. This area is estimated to cover approximately 1.43 acres. The attached figure depicts the study area. Only the Pilot Project study area will be extracted. > The removal of the study area from the DMG permit will not require public comment. ➢ Varra Companies will copy DMG on all scientific correspondence. As presented above, Varra Companies requests that DMG extract the coal ash study area from MLRB Permit No. M-74-052. Any effort to expedite this request is greatly appreciated. P.O. BOX 1489 ■ FORT C0LLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 Mr.Harry Posey Varra Coal Ash Project October 30,2001 Page 2 If you have any questions regarding this letter or require further information, please contact me at (800) 288-2657. Sincerely, CGRS, INC. 61--) 461411( oh L. Adams, P.G. Principal/Hydrogeologist Attachments cc w/att: Mr. Chris Varra—Varra Companies Mr.Kim Ogle Weld County Planning Mr. Roger Doak - CDPH&E C:lhomelWINWORDWarraldmgextractlon.doc F r _ - -. 2631.23'04 .- C.-. /Ay ?C4$ I.7 ,,,,..'-'-.--..-...-1/:„.--"".--- r 7 4 e" 4 f: , . r3 =',-,.----,T---;---5—'7 —.-- -' ...—.- ... - .----,..1:1-'-7—:t - weoa-- __ -;\ N. .-';`-------- (,,,i-_-;:._..-i--,___ __,„,_-_-_,-;-,--O . \I'7\ - i5 l', 13 ., _ ,,,..4„,,,..4„GP.r44,1 ddn ra Fcer'r�v�ir �` ' �a14 NYA' L!r X4789.2 �, n .,./i) it 4,7pia s�'.,: r t 5 h a K4TA3.5 �k, .„., wren Ica.k� Yeti ) GF�1 VEf- hi ._. •9 rr EXIBIT D ,.-- ,,,,,,-.,e,- YSIv MO hJ ' COAL ASH TRENCH AND MONITORING WELL LOCATION PLAN of aH4e sr-4 a --- --/// I •f ! Q@ d krrto GcY.iVr1'RP#,t4 w`a �rias ;IT B a-et4e<MAP FIGURE 3 AREA USE AND SITE CONDITION MAP VARRA COAL ASH PROJECT WELD COUNTY, COLORADO CG Environmental °4 Services APPLICANT 1"=P VARRA COMPANIES LEGEND: 12910 WELD COUNTY ROAD 13 PROPOSED MONITORING LONGMONT, COLORADO 80504 WELL LOCATION AFTER: NELSON ENGINEERS _f INFERRED OR MEASURED 640 GREELEY NATIONAL PLAZA fY GROUNDWATER FLOW DIRECTION GREELEY,COLORADO 80631 PHONE 356-6362 MEMORANDUM iTO: Board of County Commissioners O COLORADO' DATE: October 25, 2001 FROM: Kim Ogle, Planner III SUBJECT: Withdrawal of Site Specific Development Plan and Second Amended Use by Special Review Permit#248 Per the Resolution to approve Site Specific Development Plan and Third Amended Use by Special Review Permit#248 for a Solid Waste Disposal Facility (Coal Ash Burial Project) in the A (Agricultural) Zone District for the Varra companies, Inc. The applicant was to withdraw the above referenced application. Condition of Approval item number 2.J under Prior to Recording the Plat states: "The applicant shall withdraw the application request for a Site Specific development Plan and Second Amended Use by Special Review Permit#248." This application was heard by the Planning Commission only. For whatever reason, this case was not forwarded to the Board of County Commissioners for approval. The Department of Planning Services has reviewed the request and recommends approval of this action. •. _ ENVIRONMENTAL-CONSTRUCTION • COMPLIANCE Dept October 25, 2001 1' of Mr. Kim Ogle RECEI if 60 Weld County Planning 1555 N. 17th Avenue Greeley, Colorado 80631 RE: Third Amended USR Permit #248 Compliance With DMG Issues Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogle: I have attached a Memorandum of Understanding (MOU) between the Colorado Department of Health (CDPH&E) and Division of Minerals and Geology (DMG) regarding solid waste issues at mine sites. As specifically stated in Section 1, DMG may require that an operator, which holds a MLRB permit, obtain an appropriate CD prior to the placement of imported waste. Fly ash is the example of imported waste given in the MOU. Varra Companies has complied with all provisions the MOU as agreed upon between DMG and CDPH&E. If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780. Sincerely, CGRS INC. L. Adams, P.G. Principal/Hydrogeologist cc: Mr. Chris Varra—Varra Companies C:Ihornelw I N W ORDWarralweldcountyusrdmg,doc P.O. BOX 1489 is FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 ro FAX: 970-493-7986 /Pow MEMORANDUM OF UNDERSTANDING ' °f�.- `6 BETWEEN THE `�4( 'Vt.) 9�9 t. THE COLORADO DEPARTMENT OF HEALTH �,-� a AND _. THE DIVISION OF MINERALS CONCERNING SOLID WASTE ISSUES This memorandum of understanding is written by the Colorado Department of Health, Hazardous Materials and Waste Management Division and the Division of Minerals and Geology (DMG) to clarify selected solid waste issues at mine sites. This memorandum is intended as policy guidance, and does not create any legal rights; set any legal standards, or function in any form as "law". The MU reflects the following requirements of,the Solid Waste Dispdsai Facilities Act (SWDFA) and the Mined Land Reclamation Act (MLRA): a. Persons who dispose of their own waste on their own property do not need a Certificate of Designation (CD). Such persons must, however, comply with the substantive standards of the SWDFA and its regulations. Section 30-20-102 (3), C.R.S. (1986). b. "(A)ny person who is engaged in mining operations pursuant to a permit issued by the Mined Land Reclamation Board or Division which contains an approved plan of reclamation may dispose of solid waste generated by such operations within the permitted area for such operations...(S)uch waste disposal site and facility shall be an approved site for which obtaining a Certificate of Designation under the provisions of section 30-20-105 shall be unnecessary." Section 30-20-102(4), C.R.S. (1986). c. "Any site and facility operated for the purpose of processing, reclaiming, or recycling recyclable wastes shall not be considered a solid waste disposal site and facility and shall not require a Certificate of Designation as a solid waste disposal site and facility." Section 30-20-102(5), C.R.S. (1992 supp.). 1. IMPORTED WASTE Except as noted below in item (3), any facility which imports waste from off-site requires a CD under the SWDFA. For example, if a gravel pit which has a Mined Land Reclamation Board permit wishes to put fly ash from off-site into the pit, the facility must first obtain a CD under the SWDFA prior to placement of fly ash as a mine site. The DMG may c cridition a new permit or modification :❑ an existing permit that requires an operator obtain an appropriate CD prior to placement of off-site wastes at the mine site (Except as noted in item (3), below). 2. CUSTOM MILLS. A mill is not a custom mill if the mill site and sources of material for processing in the mill are under MLRB permit(s). Such MLRB permits must be held by the same person(s), company, or partnership. Custom mills require a CD under the SWDFA, and do not need a Mined Land Reclamation Board permit. Even if MEMORANDUM OF UNDERSTANDING Department of Health/HMWMD AND The Division of Minerals October1992 Page 2 the mill takes waste or ore from only a single off-site source, the mill still requires a CD. If a mill ceases taking off-site wastes or ore, the mill may continue operations under the CD, or may, at its option, apply for a Mined Land Reclamation Board permit and abandon the CD. It will be up to DMG to notify Health of such action by an operator. Notification to Health will be via the notice process required for all new applications and modifications to permits. 3. HEAP LEACHING OPERATIONS. Facilities conducting heap leaching do not require a CD, but simply a Mined Land Reclamation Board permit. The DMG will incorporate SWDFA requirements into the MLRB permit based on comments received from Health during the normal public comment period. Comments received from Health will be handled according to established DMG policies and procedures. Those requirements will be part of the MLRB permit and will be enforceable by DMG. If a neap leach mining operation imports metallic waste materials from off-site, and the facility is "processing, reclaiming, or recycling m.etallic...wastes.", such activities do not trigger a CD requirement. If however, the heap leach mining operation also operates a landfill, then a CD is required. 4. MINE SITES USED AS LANDFILLS AS A POST MINING LAND USE. If the mine site landfill accepts off-site waste during the period of active operation and prior to bond release,. a CD is necessary. DMG will condition any new permit application or modification to an existing permit such that landfill operations may not begin until a CD has been obtained. Also, where a mine site is to be used as a landfill as a post mining land use, DMG will contact Health prior to bond release for comment. DMG will not release the reclamation bond on such a site until an approved CD has been issued by the appropriate authority. The condition for bond release will be made a part of the permit approval document. iC, - i ' to if/VII Date \ , David C. Shelton, Director Michael B. Long, Director Colorado Department of Health Department of Natural Resources Hazardous Materials and Division of Waste Management Division ti.a 'N.s ENVIRONMENTAL •CONSTRUCTION • COMPLIANCE h'0/0, October 22, 2001 �'4��l� Mr. Kim Ogle '{f ,f irw"Opt. pt, Weld County Planning e ,., 1555 N. 17th Avenue $ }`1i Greeley, Colorado 80631 RE: Third Amended USR Permit #248 Division of Wildlife Requirements Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogle: CGRS has reviewed the March 4, 1980 letter from the Colorado Division of Wildlife. The Varra Coal Ash project is very limited in areal extent and duration and should not disrupt wildlife to any significant degree. Additionally, the coal ash once placed in the ground will be below grade and covered with native soils. However, CGRS on behalf of Varra Companies will minimize any disruptions to wildlife to the extent possible. If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780. Sincerely, CGRS, INC. Job L. Adams, P.G. cipal/Hydrogeologist cc: Mr. Chris Varra—Varra Companies C:Ulome\W 11VW ORD\V arralweldcountyusrwildlife.doc P.O. BOX 1489 a FORT COLLINS, COLORADO 80522 ■ PHONE: 970-493-7780 • FAX: 970-493-7986 CGENVIRONMENTAL• CONSTRUCTION • COMPLIANCE 1UfaCo {� Y /id October 18, 2001 is /fig• ate _ x'id/ Mr. Kim Ogel � Weld County Planning 1555 N. 17th Avenue r Greeley, Colorado 80631 RE: Third Amended USR Permit#248 Longmont Soil Conservation District Comments Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogel: CGRS has reviewed the December 24, 1998 letter submitted by the Longmont Soil Conservation District (District). CGRS' work plan presented to Weld County and the State addresses the concerns of the District by implementing a stringent monitoring plan. The project will be terminated if any degradation to waters of the state occurs. • If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780. Sincerely, CGRS, INC. oby . Adams, P.G. t .'paVVHydrogeologist cc: Mr. Chris Varra—Varra Companies C:lhome\W1 WORDIVarralweldcountyusrlmtsoil.doc P.O. BOX 1489 ri FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 ENVIRONMENTAL-CONSTRUCTION •COMPLIANCE „pt+ October 18, 20O1 ik4t (160/ Mr. Kim Ogel Weld County Planning 1555 N. 17"' Avenue Greeley, Colorado 80631 RE: Second Amended USR Permit #248 Request for Withdrawal Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogle: CGRS, Inc on behalf of Varra Companies, Inc. requests that Weld County withdraw the application request for a Site Specific Development Plan and Second amended Use by Special Review Permit #248. If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780. Sincerely, CGRS INC. JobyL. A ams, P.G, rin pal/Hydrogeologist cc: Mr. Chris Varra—Varra Companies C:lhome\W 11VW ORDIV arralweldcountyusrwithdraw,doc P.O. BOX 1489 ■ FORT COLLINS,COLORADO 80522 A PHONE: 970-493-7780 ■ FAX: 970-493-7986 ( 7 ,44S ENVIRONMENTAL. CONSTRUCTION .COMPLIANCE 4rco October 18, 2001 , rk Mr. Kim Ogel414% J ., �, tit Weld County Planning 1555 N. 17th Avenue Site Greeley, Colorado 80631 RE: Third Amended USR Permit #248 Air Permit Requirements/Dust Control Plan Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogle: The Varra Coal Ash project is located in an attainment area for particulate emissions (PM10) according to the Colorado Department of Public Health and Environment. A map showing nonattainment areas is provided for your review. As such an amended air quality permit is not required for this project unless annual fugitive air emissions exceed five tons per year for PM10 emissions or 10 tons for total particulate emissions. After reviewing AP- 42, Sections 13.2.2 and 13.2.4 and estimating particulate emissions by means of equations provided in those sections, it is our opinion an amended air quality permit is not required for this limited project. The total estimated dust emissions for this project is calculated at less than 200 lbs. Management of coal ash will initially entail adding water to the ash so that its volumetric water content is near 0.25%. This will help to reduce fugitive ash emissions due to wind and placement. The ash will be brought to the site by 20 yard, covered, end dump trailers. The volume of ash proposed for this project is less than 400 tons. The ash will be stockpiled on plastic near the proposed trench and covered with plastic. It is anticipated that the ash will be placed in the trench the day of delivery, but will not exceed 72 hours. The placement of ash in the trench will not occur during high wind events. If needed, the ash will be wetted prior to its placement in the trench. The ash will be handled by means of a front-end loader and placed in the trench concurrent with the digging of the trench. If unusually dry conditions exist, the haul road to the site (0.35 miles) will be wetted prior to truck access. C:lhomelWINWORDIVarralweldcountyusrairperrnit.doc P.O. BOX 1489 F. FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 Mr.Kim Ogel Varra Coal Ash Pilot Protect Proposal October 18,2001 Page 2 If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780, Sincerely, C AS INC. Job L. Adams, P.G. z•Pri cipal/Hydrogeologist Attachments - Non-attainment area list Non-attainment area map cc: Mr. Chris Varra—Varra Companies NON-ATTAINMENT AREAS IN COLORADO The following non-attainment areas are subject to lower APEN and permit levels. Specific maps for each area are available from the Division: -Denver Metro Area (includes all of Denver, Douglas, and Jefferson Counties; Boulder County-excluding Rocky Mountain National Park; Adams and Arapahoe Counties-excluding areas east of Kiowa Creek) -Colorado Springs Metro Area (including Manitou Springs, Woodland Park, Monument, Fountain, Security, and Ellicot) -Fort Collins Metro Area -Greeley Metro Area -Aspen -Canon City -Lamar -Pagosa Springs -Steamboat Springs -Telluride PM 0 Non tta ment A eas. in Co orado' 1 • -{ f �r `r_� ti--, t r niboa k ` 1n `r �'- k ' ""-"fire- ---- - - ---I f ,i','� , , 1 -- \ L , �, Latimer A F lips � �-t --� _ 3=� - J son - ,, • 1.v.- d �� ..;, \ /r 7k .c. . ---, , lir ... : .. ,45, uti_, . iv-or . ,..1 -- ____, t_ 7---6-raffa /.___\ - . .. -.:::-7 .._ ._ .',-.L'_-:.__'-:, liilinlrAll. MI I MINNIE ll- Rig1J1 rl V 5 --C'J f�'�F` I I r • r. _,� �. I - -La-:1-r. N;r,,.- - of I -...:4,• _ 1 .___,i I \_ „ . A_ ,i Garfi.old(------ - '-- . \-,) ' d „ , . _,, - - - I ir--- '44 . ki,.Pen k,-./-1 - I i, • ,ars Oilp IL r • I. r' -r . il=.,-\ \_. LI 'i �J,.. �_-•_55r.{_ - + .Li11tif�n 1 ' y r. • r ti -fir 1 `v ti • j- ii ! I I p1III�� ,� r� L! 1 `„ •...r-I�-, 4� \ `i. F- 414;'': lw` --._-� slo..• . ._ - `LL __ p py 1�I_y` ..._,L- ,..---, 71 K _ Uuums9I a e ti ° {. '7 I iI 1 7 m-,_ ,- ----.... _:_Jr-- _ • ---]-7-__ 1. .-r.� _ f jt- • Y+ - 1f f _�- I t-,-,- .' �• te Pilo.r, ]' I/ _,—'''. 0..-eblo .— i Ehlamax 4E7 L "�t� ti ,i. - 4J a1r 4 CLI teJ- r i f} �� Y �— f ��. H1r1 � --, — IT —I- _ _ :,- { ent Pra ears I �,_ f�„�� IJ I f�_. J i r' Otero \ . �. .y-� �-- � - I ! 11 tie fauo `.r Dolores u �xX7 eras t5 ,, ,,, . --._ J j Ri.g"Gran err 1 -- ` [ ,- --- Montezumit 'la 7.4,--- \'4414 - ' --- agos a *pi-mg& , , 1 (- \•,\.i 1_,_ Animas 1 '•-•-ccinejosi---_- i , __., 1V 70 0 70 140 MilesA Colorado Department of Public ffalth and Environment Air Polution Control Division MEMORANDUM TO: Board of County Commissioners WL DC FROM: Kim Ogle, Planner III COLORADO DATE: October 8, 2001 SUBJECT: Certificate of Designation -Varra Companies 3rd Amended Use by Special Review Permit 248 LOCATION: Part of the NW1/4 of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado The Board of County Commissioners held a public hearing on September 19, 2001, for the purpose of hearing the application of Varra Companies, Inc., 12910 Weld County Road 13, Longmont, Colorado 80504 for a Solid Waste Disposal Facility (Coal Ash Burial Pilot Project) in the A (Agricultural) Zone District. After hearing the public testimony and statements of those present; reviewing the exhibits and supporting documentation including the recommendation of the Planning Commission, the Board of County Commissioners voted to approve 3rd Amended Use by Special Review Permit 248 by a margin of 4-1, with Commissioner Jerke voting against the application. At the time of this hearing, the Certificate of Designation could not be acted upon as there was not adequate time for notification. Further, the hearing was held at a time when the Planner of record, Julie Chester, was no longer associated with the County. It is staff's recommendation that the Certificate of Designation request be approved for the following reasons: 1. The Conditions of Approval and Development Standards in Use by Special Review Permit#248 (3rd Amended Use by Special Review Permit 248) will minimize the impacts on the surrounding property and the area to the greatest extent possible. The Conditions of Approval and Development Standards will also provide adequate protection of the health, safety, and welfare of the inhabitants of the area and the County. 2. The solid waste disposal facility (Coal Ash Burial Pilot Project) will provide convenience and accessibility to the user, Excel, (Public Service of Colorado). 3. The applicant has demonstrated in the submitted application materials the ability to comply with the health standards and operating procedures of the Solid Waste Disposal Site and Facilities Act, Title 30-20, Part 1, CRS, as amended. 4. The Colorado Department of Health and the Weld County Department of Public Health and Environment have reviewed this request and find, subject to conditions, the use will comply with the Regulation Pertaining to Solid Waste Disposal Sites and Facilities Act, Section 30-20, Part 1, CRS, as amended. Additionally, the Department of Planning Services asks the Board of County Commissioners to approve the Certificate of Designation for Varra Companies, for a Solid Waste Disposal Facility (Coal Ash Burial Pilot Project), on the above described real property subject to the following condition(s): 1. The property shall be maintained in compliance with USR#248 (3rd Amended Use by Special Review Permit 248), all submitted application materials on file with Weld County, and all requirements of the Colorado Department of Health and the Weld County Department of Public Health and Environment. • 09/13/01 11:52 FAX 970 304 6498 WELD PLANNING 8001 Ake6r. 'utWI" FAX TRANSMISSION • COLORADO WELD COUNTY DEPARTMENT OF PLANNING SERVICES FAX: 970-304-6498 PHONE: 970-353-8100, Exr. 3540 To: Julie Chester • TDate: September 13, 2001 Fax: 352 6284 Pages: 7, including cover Phone: 352 6057 x 104 From: Kim Ogle Ip Planner Ill kagle@co.weld.co.us Subject: Agreement—Patina and Varra Companies COMMENTS: For your information. Lee was copied on document. You may want to contact Joby at 800 288 2657 or 970 493 7888 to discuss present situation. He is waiting for word from someone on this case. Lee's legal advice is to place topic of adequacy in.the hands of the Board to determine whether`condition has been met. If you need any further information, please feel free to contact me at the above telephone number or e- mail address. CONFIDENTIAL This facsimile is intended only for.the use of the individual or entity to which it is addressed and may contain information that is privileged confidential,and exempt from disclosure under applicable law.If the reader of this facsimile is not the intended recipient nor the employee or agent responsible for delivering the facsimile to the intended recipient,you are hereby notified that any dissemination,distribution,or copying of this communication is strictly prohibited. If you have received this communication in error,please notify us immediately by telephone and return the original message to us at the above address via the U.S.Postal Service. Thank you. 09/13/01 11:52 FAX 970 304 6498 WELD PLANNING IJ002 Varra Companies, Inc. Office of Special Projects 1431 East 16th Street + Greeley,Colorado 80631 + Telephone(970)353-8310 + FAX 970)3534047 SI �L, { Thursday 13 September2001 Weld County Planning Dept. To: Kim Ogel ,i .;` I 2c01 Weld County Planning • Telephone: ( R f > W E r,, Fax Line: From: Bradford Janes Professional Foreste Subject: Surface Damage Agreement between Varra Companies,Inc.and SOCO,aka Patina Oil 3`d Am USR 248—Coal Ash Burial Project. Dear Kim: The copies of the above agreement provided to your office were inadvertently covered W the legal size fold. Included with this transmittal are the full agreements,at the request of Joby Adams,C.G.R.S: If you need clarification•or additional information,please feel free to contact us. cc. Lee Morrison Weld County Attorney 09/13/01 11:52 FAX 970 304 6498 WELD PLANNING a 003 SUM Snyder Oil Corporation 3939 SOCO Parkway Evans,Colorado 80620 January 26, 1994 (303)330-2200 (303)442.6025 Varra Companies, Inc. 2130 South 96th Street Broomfield, CO 80020 Re: Van-a 31-3L & Varra 31-4L N/2NW/4-31-3N-67W Weld County, Colorado Dear Jack: Pursuant to our meeting of January 5, 1994, after receipt of the executed Surface Damage Agreement and prior to commencement of operations, Snyder will make the following payments by check: Surface Damages(per well) $ 1000.00 Total Consideration $ 2000.00 *Gas Pipeline Right-Of-Way to be paid at $ .85 per foot once route has been determined and measured. Please indicate your receipt and acceptance of this letter by signing and dating in the space provided below. Please return the original to me and retain a copy for your files. Thank you for your cooperation in this matter. Cordially, 4141 �J - Curt Moore Consulting Landman ACCEPTED AND RECEIVED THIS 3( day of "'titive 1994 go,{ Title: A . C 09/13/01 11:52 FAX 970 304 6498 WELD PLANNING 0004 SUM Snyder Oil Corporation 3939 SOCOParkway Evans,Colorado 80620 January 26, 1994 (303)330-2200 (303)442-6025 Varra Companies, Inc. 2130 South 96th Street Broomfield, CO 80020 Re: Nelson 31-1L, Nelson 31-2L, Nelson 31-7L, Nelson 31-9L, Siegrist 31-10L, Siegrist 31-15L & Nelson 31-16L E12-31-3N-67W Weld County, Colorado Dear Jack: Pursuant to the terms of that certain Surface Damage Agreement dated .L Yl , 1994, by and between Varra Companies, Inc. and Snyder Oil Corporation, and pridto commencement of operations, Snyder will make the following payments, the amount of which shall equal the cost to Varra of installing a replacement gas pipeline, by check: Mining Damages (per well) $ 1367.64 Total Consideration $ 9573.48 Please indicate your receipt and acceptance of this letter by signing and dating in the space provided below. Please return the original to me and retain a copy for your files. Thank you for your cooperation in this matter. Cordially, Ziat e — Curt Moore Consulting Landman ACCEPTED AND RECEIVED THIS 3/'day of g n C. , 1994 g#4. dit4.O-1 Title: hd . 09/13/01 11:53 FAX 970 304 6498 VELD PLANNING a 005 SURFACE DAMAGE AGREEMENT KNOW ALL MEN BY THESE PRESENTS: That the undersigned Varra Companies, Inc., 2130 South 96th Street, Broomfield, Colorado 80020,being the owner,recognizing that the following described lands are subject to one or more oil and gas leases of record, and that the lessee and its assigns, and the agent of such to whom this instrument is delivered,have certain rights in the use of the surface of the lands covered by such lease or leases,and being now informed of the proposed use,including ingress and egress,placement of drilling location and other uses incident to the drilling for and production of oil and gas on the following described lands,as shown on Exhibit"A"attached,do hereby agree,in consideration of the premises and the further promise of the agent of lessee or its assigns, to pay the undersigned the sum of Ten and more Dollars($10.00) to acknowledge, and he does hereby acknowledge, subject only to the timely receipt of the above sum f money,such sum as full settlement and satisfaction of all detriment, injuries and damages growing out of, incident to, or in connection with the drilling and production from well(s)Varra 31-3L(NENW-31- 3N-67W) & Varra 3I-4L(NWNW-31-3N-67W)upon the following described lands in Weld County, Colorado, to wit: Township 3 North, Range 67 West,6th P.M. Section 31:N/2NW/4 Spacing Unit Description: N/2NW/4 caused by the moving in and moving out of agent's derrick, drilling tools, vehicles, and all other machinery and equipment necessary or incident to drilling, testing, completion and operation of such well(s) for oil and gas, and all roads, pipelines, tank batteries, and lands involved in permanent installations. And for the same considerations, the undersigned does hereby release,acquit,and discharge the said SNYDER OIL CORPORATION,itself and the principals for which it shall act,of and from any and all of, incident to or in connection with drilling of said well(s) and operations incident thereto as aforesaid,and does particularly release,acquit,and discharge said SNYDER OIL CORPORATION,and its principals, of and from, but not by way of limitation to, all such claims for detriment,injuries, and damages to said land, the improvements thereon and appurtenances thereto,or to any grass,vegetation, shrubs,trees,crops,livestock,or other personal property growing or located thereon,or any damage or loss which the undersigned has or might hereafter sustain due to diminished quantity or quality of future crops caused by the above-mentioned operations. The undersigned agree to waive the minimum thirty(30)day written notice requirement described in the Notice Letter provided you by Snyder when it initially gave notice of its intent to drill the above described well(s). It is understood that the undersigned and Snyder Oil have already agreed to or will mutually agree to the specific timing of the location, building, drilling and completion of said well(s). This Agreement is subject to Exhibit "A",a plat showing the approximate locations of SOCO's wellsites, access roads, production facilities, etc., attached hereto and by this reference made a part hereof. This Agreement is subject to Exhibit "B",a list of"Additional Provisions" between the parties herein, attached hereto and by this reference made a part hereof. Dated this .3t 6 day of JAvt,A , 1994 Signed:6.14, Title: gm • ((/ 09/13/01 11:53 FAX 970 304 6498 WELD PLANNING fdj006 EXHIBIT "A" Attached hereto and made a part hereof that certain Surface Damage Agreement dated /"' 31 1994, from Varra Companies, Inc.,2130 South 96th Street,Broomfield, Colorado 80020. Township 3 North.Range 67 West.6th P.M. Section 31: N/2NW/4 • VARR&31-4L VARRA 31-3L HELSAN 31-2L:' NEL5onl 3l-IL VAN„31-51" • _...----,i • r;\SWI'INEI4 - .1 V S St.Vra,n Kiver v ^+`1 Oast• 31 VARRA'3I-121.'3I-121. VAitl MAIL 1' SIrEiRST 31-IOL NELSKA SIAL L. vi e W 3 . / U VARRA31-14L SW-Jim 31-ISL \ NFLSnN 31-R,L CI 7 SH14SWILI . I eld Covn4v Ind 26 09/13/01 11:53 FAX 970 304 6498 PPM PLANNING Rj007 • EXHIBIT "B" Attached hereto and made a part hereof that certain Surface Damage Agreement dated / — 3 1994, from Varra Companies, Inc.,2130 South 96th Street, Broomfield,Colorado 80020. Additional Provisions: 1. Varra Companies, Inc. ("OWNER") agrees to provide temporary access to Snyder Oil Corporation ("SOCO") for drilling and completion operations to the directional pad [Warn 31-5L (SWNW-31-3N-67W), Varra 31-11L (NESW-31-3N-67W), Varra 31-12L(NWSW-31-3N-67W) and Varna 31-14L(SESW-31-3N-67W)] located in the SW/4SW/4 as shown on Exhibit "A". 2. OWNER agrees to provide permanent access to SOCO for drilling,completion and production operations to the,directional pad [(Nelson 31-1L(NENE-3I-3N-67W), Nelson 31-2L(NWNE-31-3N- 67W)and Nelson 31-7L(SWNE-31-3N-67W)]located in the SW/4NE/4 as shown on Exhibit "A". 3. Permanent access to the Van-a 31-3L(NENW-31-3N-67W)and Varra 31-4L(NWNW-3l-3N- 67W)will be as shown on Exhibit "A". 4. In a measure of good faith between the two parties herein,SOCO agrees to compensate OWNER for the installation of a gas pipeline in the SW 1/4 of this Section 31 which will replace a different gas pipeline and allow OWNER the ability to mine the SW/45E/4 and the S/2NW/4SW/4. The estimated cost of this pipeline installation amounts to $ 9573.48,and said compensation shall reimburse OWNER for the area around the to drillsites and tank baterry sites in the E/2 of this Section 31 which will be lost for gravel mining purposes. This compensation shall be provided for in a "Letter Agreement" dated January 26, 1994 between the two parties herein. OWNER further agrees to supply water at no cost to SOCO for drilling and completion operations associated with the following Thirteen(13)Wells:Nelson 31-1L(NENE-31-3N-67W),Nelson 31.2L(NWNE-31-3N-67W),Varra 31-3L(NENW-31-3N-67W), Varra 31-4L(NWNW-31-3N-67W),Varna 31-SL(SWNW-31-3N-67W),Nelson31-7L(SWNE-31-3N- 67 W),Nelson 31-9L(NESE-31-3N-67W),Siegrist 31-I0L(NWSE-31-3N-67W),Varra 31-11L(NESW- 31-3N-67 W),Varna 31-12L(NWSW-31-3N-67W),Varra 31-14L(SESW-31-3N-67 W),Siegrist 31-15L (SWSE-31-3N-67W)and Nelson 31-16L (SESE-3l-3N-67W), all bottom hole locations and respective surface drilling locations shown on Exhibit "A". OWNER further agrees to allow SOCO the right to dispose of drilling muds and shale cuttings on OWNER's lands at sites mutually agreed to between the two parties for the same thirteen wellsites described herein. 5. SOCO shall compensate OWNER for landscaping and aesthetic maintenance of the four (4) directional drilling locations shown on Exhibit"A". Said compensation shall not exceed Two Thousand Dollars($2000)per drilling location. Said landscaping and maintenance shall include building of burms, installation and maintenance of trees and shrubbery, etc., around the tank batteries and well heads. It is mutually agreed between the two parties that said landscaping and construction shall not inhibit SOCO's ability to service, maintain and produce the wells and tank batteries. 6. OWNER agrees to provide fill dirt to SOCO for the SW/4SW/4 drilling location at a cost of Three Thousand Three Hundred Dollars($3300.00). The amount of fill dirt shall equal not less than One Hundred (100) "tandem" truck loads. OWNER shall dump said dirt on the drillsite location at a time mutually agreed to between the two parties. 7. SOCO further agrees that any fill dirt, road base or pit run used on this Section 31 shall be purchased from OWNER provided that OWNER's prices are competitive. • 09/12/01 16:13 FAX 970 304 6498 WELD PLANNING l 001 SEP-12-2001 1557 • 5 INC 617-6--1-} '� �t6� • 970 493 7995 P.01/06 J2 11! 6: 1- ; CG P.O. Box 1489 Facsimile Transmission Fort Collins, CO 80622 (970)493-7780-Phone (970)493.7886-Fax info@cgrs.com—Email www.cgrs.com Date: 4/n/0 / Pages(Including cover): To: 9i iv' °'LE/J tiu-I C -1-I6?rt-12_ Fax Number: 410 3s'( 6V1$ Company: ty09 Phone Number: From: -,lo' 1 Mwv,"5 ° Title: Subject: 5w4L.e1ietaarJ enuvuwl 9` I Message. faSolu'1rw qq� ( cU r) IA fro ri'Itvaieofa nr ha,if GuT- -44 rneez.e cans—, } cs...,...)SL) er/1 2 Yllil 66eb twskt hvj ?r., iaxe. Ott a.k.a. 15 ytvo t7 wj e-.- Itt wut cAnt ea . • Signed: NOTICE: The information contained in this facsimile document is confidential and Intended only for the use of the person(s)or entity named above. If the reader of this message is not the Intended recipient,you are hereby notified that any dissemination,distribution or copying of this communication is strictly prohibited. If you have received this fax in error,or If them are problems of any kind with the receipt of this far,please notify us IMMEDIATELY at the above phone number. \WTSERVEMFarmvVtthranlilank Fax Caver.aeo • n 09/12/01 16:13 FAX 970 304 8498 WELD PLANNING lA002 SO-12-2001 1557 CGRS INC e"" 493 7986 P.02/06 sac] Snyder Oil Corporation 3939 SOCO Parkway Evans.Colorado 80620 (303)330.2200 January 26, 1994 (303)442.6026 Varra Companies, Inc. 2130 South 96th Street Broomfield, CO 80020 Re: Varra 31-3L&Varra 31-4L N/2NW/4-31-314-67W Weld County, Colorado Dear Jack: Pursuant to our meeting of January 5, 1994,after receipt of the executed Surface Damage Agreement and prior to commencement of operations, Snyder will make the following payments by check: Surface Damages(per well) $ 1000.00 Total Consideration $2000.00 "`Gas Pipeline Right-Of-Way to be paid at$ .85 per foot once route has been determined and measured. Please Indicate your receipt and acceptance of this letter by signing and dating in the space provided below. Please return the original to me and retain a copy for your files. Thank you for your cooperation In this matter. Cordially, Curt Moore Consulting Landman • ACCEPTED AND RECEIVED THIS 3155 day of-%-.10"44.721-. , 1994 gad Title: Igt • 09/12/01 16:14 FAX 970 304 6498 WELD PLANNING a003 SEP-12-2001 15:57 - CEPS INC ra 493 7996 P.03/06 • 517C'J Snyder Oil Corporation 3939 SOCO Parkway Evans,Colorado 30620 January 26, 1994 (303)330-2200 (3031442-6023 Varra Companies, Inc. 2130 South 96th Street Broomfield, CO 80020 Re: Nelson 31-1L, Nelson 31-2L,Nelson 31-7L, Nelson 31-9L,Siegrist 31-10L, Siegrist 31-15L&Nelson 31-16L E/2-31.3N-67W Weld County, Colorado Dear Jack: Pursuant to the terms of that certain Surface Damage Agreement dated Ny 3( , 1994,by and between Varra Companies, Inc. and Snyder Oil Corporation, and pridd to commencement of operations,Snyder will make the following payments,the amount of which shall equal the cost to Varra of installing a replacement gas pipeline,by cheek: Miming Damages(per well) $ 1367.64 Total Consideration $9573.48 Please indicate your receipt and acceptance of this letter by signing and dating in the space provided below. Please return the original to me and retain a copy far your files. Thank you for your cooperation in this matter. Cordially, L 7In- Curt Moore Consulting Landman ACCEPTED AND RECEIVED THIS 5/tday of . 1994 g4lit Title: -Ad• 09/12/01 16:14 FAX 970 304 6498 WELD PLANNING O004 SEP-12-2001 15:57 - CGRS INC "" 493 7906 P.04/06 • SURFACE DAMAGE AGREEMENT KNOW ALL MEN BY THESE PRESENTS: That the undersigned Varna Companies, Inc., 2130 South 96th Street, Broomfield, Colorado 80020,being the owner,recognizing that the following described lands are subject to one or more oil and gas leases of record, and that the lessee and its assigns, and the agent of such to whom this instrument is delivered,have certain rights in the use of the surface of the lands covered by such lease or leases,and being now informed of the proposed use,including ingress and egress,placement of drilling location and other uses incident to the drilling for and production of oil and gas on the following described lands, as shown on Exhibit"A"attached,do hereby agree,in consideration of thepremises and the further promise of the agent of lessee or Its assigns, to pay the undersigned the sum of Ten and more Dollars ($10.00) to acknowledge, and he does hereby acknowledge, subject only to the timely receipt of the above sum f money,such sum as full settlement and satisfaction of all detriment, injuries and damages growing out of,incident to,or in connection with the drilling and production from well(s)Varra 31-3L(NENW-3 I- 3N-67W) & Varra 31-4L(NWNW-31-3N-67W)upon the following described lands in Weld County, Colorado, to wit: Townshin 3 North,Range 67 West,6th P.M. Section 31:N/2NW/4 Spacing Unit Description:N/2NW/4 caused by the moving in and moving out of agent's derrick, drilling tools, vehicles, and all other machinery and equipment necessary or incident to drilling, testing, completion and operation of such well(s) for oil and gas, and all roads, pipelines, tank batteries, and lands involved in permanent installations. And for the same considerations,the undersigned does hereby release,acquit,and discharge the said SNYDER OIL CORPORATION,itself and the principals for which it shall act,of and from any and all of, incident to or in connection with drilling of said well(s) and operations incident thereto as aforesaid,and does particularly release,acquit,and discharge said SNYDER OIL CORPORATION,and 09/12/01 16:14 FAX 970 304 6498 WELD PLANNING Uj005 SEP-12-2001 15:57 C6R5 INC `1493 7966 P.05/06 EXHIBIT "A" Attached hereto and made a part hereof that certain Surface Damage Agreement dated /— 3/ , 1994, from Varra Companies, Inc.,2130 South 96th Street, Broomfield, Colorado 80020. Township 3 North,Ranee 67 West. 6th P.M. Section 31:N/2NW/4 VARRA 31-9L VABRA 31-3L NEL56N 31-2t.:' NELSON 31-IL • • • • • VAR 3I-5L • . NEI4 n St.11r41n Kikr �� ari11EIte , vJ C ' M $ • Coors Brewing Company ^4'wwy Golden,Colorado 80401-0030 . x R,.; Planning /� Dept. 116 • • . ,. .`? u_,_L i 7 200+ 1 • • RECEIVE® • July 13,2001 . • Weld County Colorado Department of Planning Services 1555 N. 171h Avenue Greeley, CO 80631 Re: Case Number USR-341 To Whom It May Concern: Thank you for your referral regarding the above noted case involving the Varra Conipanies' application for an aggregate operation in the Northwest 1 quarter, of Section 25, Township 1 North, Range 68 West, Weld County, Colorado. Coors Energy Company is the owner of land 500 feet to the south of the subject/property. Coors received notice of this application during the week of July 9, and therefore, will not have the opportunity to fully understand the application itself, intendeduses or duration of uses to be conducted in the proposed operation. It is our understanding that a hearing concerning this application will be held next Tuesday, July 17. Given the shortness of notice, Coors Energy Company cannot make a comment regarding the application prior to the hearing. However,we do want to reserve our opportunity to understand and comment upon the application within the next month. It is my intent to contact the Varra Companies directly, to understand the application and plans for the subject property. , If you or Varra Companies wish to contact me,please call me at 303-277-2028. Sincerely, / on -,i--A-c4 o4{ -flees v4ec it t Neil Jaquet Director of Water Resources and Real Estate • Coors Brewing Company on behalf of Coors' subsidiary Coors Energy Company ?MS DEPARTMENT OF PLANNING SERVICES �. PHONE (970)353-6100, EXT.3540 FAX (970)304-6498 COLORADO WELD COUNTY ADMINIS 155 N17TH AVENUE GREELEY, COLORADO 80631 July 13, 2001 . Division of Water Resources do John:Schurer 1313 Sherman St Rm. 818 Denver, CO 80203 To Whom It May Concern: The attached land use case was filed with the Weld County Department of Planning Services on December 3, 1998. At that time your agency reviewed the case. The case has recently been'approved for a Certificate of Designation by the State of Colorado. Therefore the case is being scheduled to be reviewed by the Weld County Planning Commission and Board_of County Commissioners. The hearing will be held August 21, 2001, at:1:30 p.m. in Room 210, Weld County Planning. Department, 1555 N. 17f°' Avenue, Greeley, Colorado. Should you have any further comments regarding this case, please address them to Julie Chester, Lead Planner at the above address.. . � 1 • BERNARD -. DANIEL F.BERNARD 515 KIMBARK STREET RICHARD N.LYONS.II LYONS & GADDIS POST OFFICE BOX 978 JEFFREY!.KAHN IDNG1vIONT,CO 80502-0978 JOIIN W.GADD19 303-776-9900 BRADLEY A.HALL A PROFESSIONAL CORPORATION FAX303-41}1003 ST N SUERJEFFERS ATTORNEYS AND COUNSELORS..NIK weld County Planning uep° ..wawm June 11, 1999 • JUN 14 1999 RECEIVED ' Ben Patton Glen Mallory Weld County Planning Department Colorado Department of Public Health 1400.North 17th Avenue and Environment - HMWMD Greeley, CO 80631 4300 Cherry Creek Drive South Denver, CO 80246-153O Harry Posey Colorado Department of Natural- Resources Division of Minerals and Geology 1313 Sherman-Street, Room 215 • Denver, CO-80203 Re: Varra Companies, Pit No.. 1, Weld'County, MLRB Permit No. M-74-052; USR Permit 248; CGRS No. 1-135-2755 Gentlemen: . I am- an attorney representing, the St. Vrain and Left- -Hand Water Conservancy District, which has.filed a statement of opposition to a Water Court application filed' by the Varra Companies involving the above referenced gravel pits. Through the Water Court proceedings, the District learned of Varra's proposal to dispose of coal, ash by-burying it in the unlined gravel pits along the St. Vrain River. The District' has requested me to write a letter to each of you; stating the District's opposition to" the proposed project. The District is concerned about the potential for' contamination of surface and ground water sources, since the application proposes the disposal of coal ash within the alluvial aquifer. Based on the information we have reviewed, coal ash is a solid waste; which has the potential for leaching of metals and other contaminants into the local water supply,, including the alluvial aquifer and the surface stream. This may lead to contamination of wells and surface water rights in the immediate area, and downstream. There is no I scientific basis to determine whether this disposal project will be safe, or' to demonstrate that contamination will not occur at this site. The District does.not think the State should approve an experiment of this type in the alluvial. aquifer, due to the potential for contamination and the difficulties in remediating any such contamination. It is simply not good enough to allow disposal UOBLOIDATMCLIENTSISISVLHWIPATTON-MALLORY-POSEY-L':DOC 00/09/994:50 PM • BERNARD • LYONS & GADDIS A PROFESSIONAL CORPORATION ATTORNEYS AND COUNSELORS Ben Patton Glen Mallory Harry Posey June 11, 1999 • Page 2 within the aquifer, and if any contamination occurs, to require the removal of the coal ash. That will not remediate any contamination problems which would have already occurred,by that point. The-District is also concerned that Varra Companies may use this test project as a spring board`for disposal of;additignal waste along the St. Vrain River. The District is very much opposed to such a large scale disposal plan, and does not think it is. appropriate to conduct a test within the basin for that purpose. To the extent that any of your agencies have authority to grant or deny the application,, the District I requests that you deny the application.. • In addition to these general comments, the District would like to make• further specific comments regarding the proposal and regarding the work plan prepared by Colorado Groundwater Resource Services, dated April 1,. 1999.. First, Varra only looked at wells within Section 31 within '/4 mile of the proposed test site. In order to be protective, of all water rights in the area, the applicant should' consider whether there are any registered or unregistered wells in other parts , of Section 31,, as well as Sections 29, 30 and 32, Township 3 North, Range 68. West,, ' and in Section 36 in Range 69 West. The report ignores entirely the potential effect of buried coal ash to act as a dam within the alluvial aquifer. Previously, the local geology consisted of primarily sand and gravel, which was removed by the Varra Companies. In its place; the applicant • proposes to bury coal ash which is significantly less. permeable. That material' will act as a dam and change the direction of ground water flow in the aquifer. That may impact the quantity of water available to local wells, in addition to any impacts on the quality of that water. The report indicates that there is very little information regarding water quality in the alluvial aquifer. The report refers to ground water quality samples taken in the Laramie-Fox Hills aquifer near Milton Reservoir.. .This information-is meaningless or misleading for this project. The applicant has not demonstrated that the Laramie-Fox Hills aquifer is connected to the alluvial aquifer in this area or that it even exists under the Varra mine site. The samples referred to were taken 15 miles away in an entirely separate aquifer. The Laramie-Fox Hills aquifer near Milton Reservoir' is also known to have poor water quality due to the existence of coal seams and other UGBLG\DATMCLIENTSISISVLHWIPATTON-MALLORY-POSEY-L.DOC 06/09/994:56 PM BERNARD • • LYONS & GADDIS A PROFESSIONAL CORPORATION ATTORNEYS AND COUNSELORS • Ben Patton Glen Mallory - • Harry Posey June 11,A999 Page 3 naturally occurring formations within that aquifer. Those formations are not present , in the alluvial aquifer in the St. Vrain River basin. • The applicant should be-required to do significantly-more ground water and surface water sampling in this- area before consideration of any-pilot plan for this location, not after. There are not enough monitoring wells proposed in and' around the project. site. -The report does not mention the changes• in ground water levels or water quality which may occur at different times,of the year. The amount of ground''water, its rate of flow,. and its quality, may vary from season-to season. and month-to month, based on irrigation use in the area-which will in turn have some affect on leaching of heavy metals or other contaminants.from ash. The applicant should'be required'to conduct frequent, periodic samples throughout the year, perhaps for several years, before- being allowed' to begin a project of this type. Any project should be- significantly. smaller than-proposed by the applicant. Since there is no control over' the local hydrology,, it would-be more appropriate to- conduct this type of a test or pilot.project outside of the alluvial aquifer altogether. Finally, there is-no contingency plan to remove any contaminants that may-leach- out, from the pilot project„ or to help-well. owners or owners of other water-rights whose source of supply may be contaminated'by this type of project. For all of the- reasons :stated' in, this. letter, the District urges you to deny the- ' application for this project. If you:have any questions, please give me a call. Yours truly, • _BERNARD;.LYONS-& CADDIS, a Professional Corporation . B Steven P. Jeffer SPJ:bi' - cc:_ Les Williams . ,Christopher-L. Varra • Toby L. Adams, P.G. \\OSLO\DATA\CLIENTSIS\SVLHW\PATTON-MALLORY-POSEY-L.DOC 08/09189 4:88 PM C G') 3 COLORADO GROUNDWATER RESOURCE SERVICES Weld County Planning Dept. • December 28,1998 DEC 2 91998 Ben Patton i V E D Weld CountyRECE Department of Planning Services - 1400 N. 17th Avenue Greeley,CO 80631 - RE: Coal Ash Proposal Weld County Colorado CGRS No.1-135-2755 Dear Mr. Patton: The purpose of this letter is to clarify that the Amendment Application.for Use by Special Review Permit 248 (USR) is meant to satisfy the requirements for the USR and Certificate of Designation. If you have any questions regarding this letter,please contact me at (800) 288-2657. Sincerely, CGRS,INC. ,1 •. Jo y L. Adams,P.G. Principal/Hydrogeologist , cc: Mr. Chris Varra-Varra Companies Mr.Dave Goss-PSC Mr. Terry Staley-PSC Mr.Trevor Jiricek-Weld County Health Department Mr. Bruce Humphries- Colorado Division of Minerals and Geology • Mr. Glen Mallory -Colorado Department of Health - SWD Winward\letters\usrcdletter • P.O. Box 1489 Fort Collins, CO 80522 Phone: (970)493-7780 Fax: (970)493-7986 CGT)sES SERVICES ES RESOURCE November 19, 1998 Weld County Department of Planning Services 1400 North 17th Avenue Greeley, Colorado 80631 RE: Application for Amendment to USR Permit 248 • Varra Coal Ash Burial Project • Weld County, Colorado CGRS No. 1-135-2755 Dear Sir or Madam: Varna Companies, Inc. respectfully submits this Amendment Application for Use by Special , Review Permit 248 for mining operations in Section 31, Township 3 North, Range 67 West of the 6ih Principal Meridian, Weld County, Colorado. The required information and data are presented in Attachments A through F. The information provided in the attachments is as follows. Attachment A, - Presents the permit application and statements that correspond to the application requirements, site map with corresponding aerial photograph. Attachment B - Presents the Policy Title Insurance documenting the applicants interest in the property under consideration. Attachment C - List of names of owners of property within 500 feet. Attachment D - Affidavit of interest owners surface estate. Attachment E— Affidavit of interest owners minerals and/or subsurface estate. Attachment F — Soil Map and Legend. • • • P.O. Box 1489 Fort Collins, CO 80522 Phone;(970) 493-7780 Fax: (970)493-7986 I Weld County Planning Department Amendment Application Varra Coal Ash Project November 19,1998 .. Page 2 As we discussed the fee for this permit will be$1,100 plus associated costs for Health Department review. The$1,100 permit fee is enclosed herein. Please forward all correspondence to: CGRS, Inc. P.O. Box 1489 Fort Collins, Colorado 80522 Attn. Mr.Joby L. Adams If you have any questions regarding this application, please contact me at(800) 288-2657. Sincerely, CGRS, INC.CZ . Adams, P.G. Principal/Hydrogeologist • Attachments NOU-12-1998 15:2? • -- -- , P.04 r. Post-IC°Fax Note ` 871 Date ,°p, ► / K i ,rc h Fran, , Jatet• • ',j COA]apt -Co. • if 'el P" B Phonate.gl o . (4 03 e3gt ' ARTMENT OF HEALT# , .. Frf I�Z 3+� ?axeII `[ 716TH AVENUE COURT GREELEY, CO 80631 '' 0 • • . ' ADMINISTRATION (970)3S3 0586 ill C°. ALH PROETN 90) 353-0635 ' . COMMUNHETITY HEATCLT IOH (970)( 7 353-0639 COLORADO FAX (970) 356-4966 August 17, 1998 . • Glenn Mallory • . Colorado Department of Public Health and Environment , • -4300 Cherry Creek Drive South Denver, Colorado 80246-1530 • i • Subject: Verra Companies, Inc., Pilot Project Proposal Dear Mr. Mallory: Today, Monday,August 17, 1998, I met with:representatives of our Planning and Attorneys office and.our Board of County Commissioners concerning the fly ash pilot project proposed.by • 'Colorado Groundwater Resource Services on behalf of Varra Companies, Inc. The purpose of • our meeting was to discuss•the permits and fees that the.County would require for this pilot • program_ As you know,the proposed pilot program is described, in-general, in a-July 8, 1998, - , ' letter to yod from Joby Adams-of Colorado-Groundwater Resource Services. It was-determined that both:a Special Use-Permit.and a Certificate of Designation (CD) would be 'i required. An $1,100.00`fee-must be submitted for the Special Use Permit and a.deposit of ' $17,114:00:for the CD fee must be submitted. The.fee charge for the CD will be based on actual . . staff tine spent reviewing-the application.. The balance of the deposit will be returned following, completiornof the County Planning process. I wouldn't expect this fee to exceed$3;50400_ it should be fotedthatthese conditions-apply only to this circumstance,for:any other-new CD ' application'no monies would be returned. ' If you have any questions, or if I can be of any assistance, please do not hesitate;to call me at (970) 353-0635; extension 2232. s nserely,• Weld County Planning Dept. Trevor Jiri NOV 1 . . Supervisor: ' • F , Environmental Protection Services • ' ,,19078 ,' _ cc: Rogerpoak, Colorado Department of Public Health and Environment Monica Daniels-Mika, Weld County Planning Department • Lee Morrison, Weld.County Attorneys Office Weld CountyBoard of County Commissioners Harry Posey, Colorado Division of Minerals and Geology Joby.Apants, Colorado Groundwater Resource Services TOTAL P.01 • 11/12/98 15:27 TX/RX NO.3311 P.001 II, FIELD CHECK __ FILING NUMBER: 3rd AmUSR-248 DATE OF INSPECTION: CD0C, ) , 1 c 9 Si APPLICANTS NAME: Colorado Groundwater Resource Services/Varra Companies PLANNER: Ben Patton REQUEST: A 3rd Amendment to'a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. LEGAL DESCRIPTION: Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. LOCATION: Approximately 1 mile north of WCR 26; approximatley 1 mile west of WCR 15. • LAND USE: N CtS E W ZONING: N A(Agricultural) E A(Agricultural) S A(Agricultural) W A(Agricultural) COMMENTS: • • P.C. Member Weld County Planning Dept. DEC 16 1998 " . _ EW ` * F i • NOTICE OF PUBLIC HEARING . The Weld County Planning Commission will hold a public hearing on Tuesday, August 21, 2001, at.1:30 p.m. for the purpose of considering a 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Solid Waste Disposal Facility and Certificate of Designation (Coal Ash, Burial Pilot Project). Approval of the request may create a vested property right pursuant to Colorado Law. CASE NUMBER: 3rd AmUSR-248 APPLICANT: Colorado Groundwater (Varra) PLANNER: Julie Chester LEGAL DESCRIPTION: Part of NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. TYPE AND INTENSITY OF PROPOSED USE: 3rd Amendment to a Site Specific Development Plan and .Use by Special Review Permit for a Solid Waste Disposal Facility and Certificate of Designation (Coal Ash Burial Pilot Project). LOCATION:Approximately 1 mile north of WCR. 26; approximately 1 mile west of WCR 15. SIZE: .26 acres, more or less. The public hearing will be held in Room 210, Weld County Planning Department, 1555 N. 17th Avenue, Greeley,Colorado. Comments or objections related to the above request should be submitted in writing to the Weld County Department of Planning Services, 1555 N. 17th Avenue, Greeley, Colorado 80631, before the above date or presented at the public. hearing on August 21, 2001. Copies of the application are available for public inspection in the Department of Planning Services, 1555 N. 17th Avenue, Greeley, Colorado 80631. Please call Donita May at(970)353-6100, Ext.3540, or Fax#(970)304-6498,prior to the day of the hearing so that reasonable accommodations can be made if, in accordance with the Americans with Disabilities Act, you require special accommodations in order to participate in • this hearing as a result of a disability. Cristie Nickles, Chair Weld County Planning Commission To be published in the Farmer& Miner. • To be published one(1)time by August 8, 2001 . NOTICE OF PUBLIC HEARING The Weld County Planning Commission will hold a public hearing on Tuesday, January 19, 1999, at 1:30 p.m. for the purpose of considering a 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Solid Waste Disposal for the property described below. Approval of the request may create a vested property right pursuant to Colorado Law. CASE NUMBER: 3rd AmUSR-248 APPLICANT: Colorado Groundwater Resource Services/Varra Companies PLANNER: Ben Patton • LEGAL DESCRIPTION: Part of the NW4 of Section 31,T3N, R67W of the 6th P.M., Weld County, Colorado. TYPE AND INTENSITY OF PROPOSED USE:A 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Solid Waste Disposal. LOCATION;Approximately 1 mile north of WCR 26; approximatley 1 mile west of • WCR 15. SIZE: .26 acres, more or less The public hearing will be held in Room 101, Commissioner's Hearing Room, Weld County Centennial Center, 915 Tenth Street, Greeley, Colorado. Comments or objections related to the above request should be submitted in writing to the Weld County Department of Planning Services, 1400 N. 17th Avenue, Greeley, Colorado 80631, before the. above date or presented at the public hearing on January 19, 1999. Copies of the application are available for public inspection in the Department of Planning Services, 1400 N. 17th Avenue, Greeley, Colorado 80631. Please call Wendi Inloes at (970) 353-61-00, Ext. 3540, or Fax # (970) 352-6312, prior to • the day of the hearing so that reasonable accommodations can be made if, in accordance, with the Americans with Disabilities Act, you require special accommodations in order to participate in this hearing as a result of a disability. Marie Koolstra, Chair • Weld County Planning Commission To be published in the Fort Lupton Press. To be published one (1) time by December 23, 1998. E-MAILED/FAXED Affidavit of Publication STATE OF COLORADO , County of Weld SS. - I A.Winkler Riesel of said County of Adams being duly sworn,say that I am publisher of NDTICERUDLIC,HEARING',. FORT LUPTON PRESS aY ' I x �- that the same is a weekly newspaper of general circulation Crud e unfyr,Plonningg sPaP Cofnn)ist(ora Ihotd�oe3J ik • was printed and published in the town of beoiing otf.�uesdayko�uCry 1ii7M9/ t150�Jii,c4We'. FORTLUPTON A ier m $.9,0, tes ec in said county and state that the notice of advertisement,of Amep517100oagnte5peeise' Devialop lenfiNdriban SiUse> which the annexed is a true copy has been published in bnyopdelgliRevlew`Permrthe.: said weekly newspaper for stSolldWnste itsposcl iiiihe pmppryCescljbed 6663.y7.- ONE consecutive weeks: that the notice was Approvaloftherequettrtoy.. - published in the regular and entire issue of every number credte,aken¢dpf90:eRyrlght of said newspaper during the period and time of ppuanfigC0lorapo;dwr•t publication of said notice and in the newspaper proper and OAST MiltNeR*13rd.Ad'+t1SR_ . not in a supplement thereof: that the first publication of ' said notice was contained in'the issue of said newspaper ,111Cpl1T COIOrQdb_i bearing the date of GrounpWoid( Resource. DECEMBER 16. A.D. 1998 and the last 8mvices;(Vp'rr¢cor.W7,0!esY�; publication thereof,in the issue of said newspaper,bearing ,_.. JE EsCnn.... . ,_ LEGALDESCRIP ion part,o, date, l0 NWA or364dan 31 73Ni 067Wl OL11l0if P trti i eld''' the 16th day of DECEMBER 19981 Cdu I eolorado -_ that the aid I#EPC$ inirthISITYy '15` Pmendmei tooEe A:Ala Amentlmeia.4011,eSpec'i a„ FORT LUPTON PRESS Devalop(gent elan antlye o`sspearai:Revfeviss rm�i1ctl has been published continuously and uninterruptedly ❑SOIIdpYf19fe pro Isafrilk-St during the period of at least fifty-two consecutive weeks 40C i1,0 A}Jpwk�Irpately ,i next prior to the first issue thereof containing said notice f{pi r bo11,ff+ttalM CR 2 . or advertisement above referred to: and that said appr¢>Sirpatte�+�,m11)wesl o/ newspaper was at the time of each of the publications of WCR 1 ,.� said notice duly alified for that purpose within the S µ tPu CSftE�26,apfes,�more orle55;{� meaning of er se ents An Act Concerning Legal bhepubllc neodng wilitiet Notices,Advertisements and Publicatons and the Pees of h Id t sn,tisi Roorri4e 701 2-7 Printers and Publishers thereof,and to Repeal all Acts and- 'Lommlrnoner s4Veating. - Pans of Acts in Conflict with the Provisions of this And fiooarh ynpIceltl fit Co7irity approved April 7, 1921,and all amendments thereof,and491,990iblCeryi coi51euth;: particularly as amended by an act approved, March 30, ctei i°LC'Yp l0(!l COIarobn j ' 1923 an an act approved ay 13, 1931. CorlrlsOAtilec'fiDns`i lea-she lhodbovereuu tvy 1ho31dbesubh tlediny[rinngg i fQ< theSyeltl`v Gaupiy . -Oeparimen ri Planntiig 1 Publisher 31141 640-4 0 0)frN i.*Wii ACOnue-YGa,(e01ey GOlednl i' 89.53.0 B,yrelhe�obovetlht.,a,�to Subscribed and sworn to before me this 16th day of o pre5�ntdd}bibs p9iiileM. t I heorl9g'♦�f}Janu0ryt9,l99991 'Copleseof toe appsconon. A -Ole-avo]able$for Aubtllc's t dn he ` 5peddditiindDepartrneni`5- forPlonnlogSeirlces.)1CW,N q t131hrAveyue scoo1nVIM . Notary Pu i xplolt�daa0°3i Pleease°al Conditlnlpes,30t,(9 cse atl ,d100'Ext73540 v fcx b(970);14 P.O.P.o,BOX 125 52°313 ilorio-theAav of %items rneorl zg Aso 1_hat Y e a`E'.`a t•Ttga e1t t el. 000amtAaaatlonsraan be M F1'._LUPTON. CO 80621 SnoaelL1 oocaorda ncew`R6 . • The Am ellbcnswlth Deoba fisi i Aci y1io k squire special s ��++vv -1.2 -0 ! Qr y\5 'purtictpa]eieltilshearing as• O'��ry ,P,i(/ It aresuliwtYd+dhabllity pcs 1 'Yield( eOliri1Y 3PktgoNog ' f - y' it tte:64)mlglbn c.,-.%.a`' " 1 E ysPtibllahe tippne Gott lupt'o'r ' J'llV .t. ` . A�,a; 'veld County Planning Dep . DEC 221998 My Commission Expires ;t 11 VE C- December 27,2001 t- ir_- ... CASE NO. - : . ACRES NAME A REQUEST . A PUBLIC HEARING CONCERNING THIS PROPERTY WILL BE HELD AT 915 - 10th STREET, GREELEY, COLORADO 80631, ON__ _ FOR MORE INFORMATION CALL THE WELD COUNTY DEPT. OF PLANNING SERVICES AT 356-4000. - • CGENVIRONMENTAL•CONSTRUCTION •COMPLIANCE AI ltlAff PEpS' P.O Box 1489 Fort Collins, CO 80522 Phone: (970) 493-7780 (800) 288-2657 Cell: (970) 227-3245 Joby L. Adams, PG Fax. (970) 493-7986 Principal/Hydrogeologist joby@cgrs.com www.cgrs.com Flu � t a\ .APPLICATION FLOW SHEET lw WillieAPPLICA��N��T ?olorado Groundwater Resource ServicesNarra COLORADO CASE #:-3td"AM-USR 248 REQUEST: Site Specific Development Plan and a Special Use Permit for a Solid Waste Disposal Site . LEGAL: Pt. NW4 of Section 31, Township 3 North, Range 67 West LOCATION: Approximately 1 mile north of WCR 26; approximately I mile west of WCR 15 PARCEL ID #:1209 31 000049 ACRES: .26 +1- acres DATE BY Application Received 12-3-98 • bjp I Application Complete 12-3-98 bjp PC Hearing Date: Action: Cir a4 o I Vt9=99-" bjp Utility Board Date: VV " PC Sign to be Posted By: 1-9-99 bjp PC Sign Posted g a 1 4144‹.- Referrals Listed 12-3-98 bjp File Assembled 9 Referrals Mailed +p-97-q Chaindexed la-91-13 Letter to Applicant Mailed O118 Date Public Notice Published in County Newspaper I.a ,3 91 Surrounding Property & Mineral Owners Notified 1 -� a I t aI Planning Technician Maps Prepared la-9 -‘25T ` Field Check by DPS Staff 9' ) 9 I or 1111_ Planning Commission Resolution Sent to Applicant g ,9•L bb 4- p 4O-6 Planning Commission Meeting Minutes Filed in Case g/, - l Le 1 cd-M v� Y Case Sent to Clerk to the Board ¶ /(4 v CC Hearing: Action: „ ,n t 9 1l 1 9 / b l) p CC Sign to be Posted By: I1�J 9 l / D i DJ cZcj CC Sign Posted L i 1 p (Di Cr 071-(/ Plat and/or Resolution Recorded - Recorded on Maps and filed Overlay Districts Zoning Ag (SUP-248). Geologic Yes No_x_ l Airport Yes_ No X_ Flood Hazard Yes_x_ No Panel#080266 0855 C ,, r ,A1/40. wigk LAND USE APPLICATION SUMMARY SHEET COLORADO Planner: Julie A. Chester Case number 3rdAmUSR-248 Hearing Date: August 21, 2001 Applicant: Varra Companies 12910 Weld County Road 13 Longmont, CO 80504 Joby Adams, Colorado Groundwater Resources Services P.O. Box 1489 Ft. Collins, CO 80524 Request: A Site Specific Development Plan and a Special Review Permit for a Solid Waste Disposal Facility and Certificate of Designation (Coal Ash Burial Project) in the A (Agricultural) Zone District Legal Description: Part of the NW4 of Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado Location: Approximately 1/4 mile east of Weld County Road 13, one mile north of Weld County Road 26 Size of Parcel: 26 +/- acres POSSIBLE ISSUES SUMMARIZED FROM APPLICATION MATERIALS The criteria for review of this Special Review Permit is listed in Section 23-2-220 and Section 23-4-380 of the Weld County Code. The Department of Planning Services' staff has received responses from the following agencies: • Weld County Zoning Compliance, referral received December 21, 1998 • Town of Mead, referral received December 15, 1998 • Weld County Department of Public Health and Environment, referral received November 21, 1998 and August 2, 2001 • State of Colorado, Department of Public Health and Environment, referral received December 30, 1998 and April 25, 2001 • Central Weld Water District, referral received July 16, 2001 • Department of the Army, Corps of Engineers, referral received December 21, 1998 and July 27, 2001 • Colorado Geological Survey, referral received February 10, 1998 and July 19, 2001 • Mountain View Fire Protection District, referral received December 18, 1998 • State of Colorado, Division of Water Resources, referral received December 15, 2001 • State of Colorado, Division of Wildlife, letter dated March 4, 1980 sent to Department of Planning Services • Weld County Department of Public Works, referral received January 18, 1999 State of Colorado, Division of Minerals and Geology, referral received December 28, 1998 • Longmont Soil Conservation District, referral received December 29, 1998 CGRSNarra,3rdAmUSR-248 Page 1 SOLID WASTE DISPOSAL SITES USE BY SPECIAL REVIEW APPLICATION • Department of Planning Services, 1400 N. 17th Avenue, Greeley, Colorado 80631 . • Phone- 353-6100-Ext. 3540{ • rh Case Number Date Received I -k4� Application Checked By �1Q Mylar Plat Submitt99d +� 7j( t ya Application.Fee x ;on v, Receipt Number (3 ,)S (12 Recording Fee Receipt Number TO BE COMPLETED BY APPLICANT: (please print or type, except for necessary signature). I (we),the undersigned, hereby request a hearing before the Weld County Planning Commission and Weld County Board of County Commissioners concerning the proposed Use by Special Review Permit on the following described unincorporated area of Weld County, Colorado: LEGAL DESCRIPTION OF SPECIAL REVIEW PERMIT ARE Section 31 AREA:Min T 3 N, R 67 W. LEGAL DESCRIPTION of contiguous property owned which Special Review Permit is proposed: Section T N, R W. Property Address(if available) 12910 V71d Oanty Rd. 13, Iartrart, OD 86604 PRESENT ZONE Agricultural OVERLAY ZONES Flood Hazard TOTAL ACREAGE 129. PROPOSED LAND USE 7>rgricultlyal. EXISTING LAND USE pgdcvltanal SURFACE FEE (PROPERTY OWNERS) OF AREA PROPOSED FOR THE USE BY SPECIAL REVIEW PERMIT: Name: Vana.ancenies. Inc. Zip: 80504 Address: 12910 held Carty W. 13 City: lcrrctrart, N Hnme Telephone: Business Telephone: 303.666.8269 name: Address: City: Zip: Home Telephone: Business Telephone: • APPLICANT OR AUTHORIZED AGENT(if different than above): • Name: ail, Marrs of CGRS,.BC. CD Zip: 80524 . Address: P.O. arc 1489 is City: Hort o-'il, ' Home Telephone: Business Telephone: 970.493.7780 _ , List the owner(s) and/or lessees of mineral rights on or under the subject properties of record. Name: uarra rrn camas. Tm. Zip: 80504 - Address: 17910 trtd 0xnty Rd. 13 City: Taigrcnt, co I hereby depose and state under the penalties of perjury that all statements, proposals and/or plans submitted with or contained within the application are true and correct to the best of my knowledge. • 4-1� auc., �, 11-/i-f Signatu : Owner or Authorized Agent I REVISED: July 25, 1996 • USE BY SPECIAL REVIEW APPLICATION REQUIREMENTS PART TWO VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO CGRS NO. 1-135-2755 A. The purpose of this project is to evaluate potential adverse liabilities of coal ash burial in saturated media. Specifically the project is intended to determine if coal ash can be used as an inert fill for the reclamation of gravel quarries. This USE BY SPECIAL REVIEW PERMIT application is submitted as an addendum to the USR permit 248. This project is a small-scale research project with an anticipated project life of three months. The area of interest covers much less than 0.50 acres (0.023 acres). B. This project will provide information to private companies and governmental agencies as to liabilities associated with coal ash disposal and to methods and procedures in which to evaluate site specific criteria for the safe disposal of coal ash. C. The site is and active gravel quarry and surrounding land use consists of agricultural, rural residential and commercial open cut gravel quarry operations. D. The distance of residential structures in each direction from the test plot area are as follows: North — 1,000 feet; East — 3,900 feet; West — 1,200 feet; South—4,800 feet.n r ri‘jAA E. Not applicable. Varra Companies is conducting the pilot project as a research and development project. No other entities are involved with the program and no products will be distributed or sold. F. As mentioned, approximately 400 tons of coal ash will be placed below grade in order to evaluate its leaching characteristics. This will occur over a one week period and periodic monitoring will occur over a two month period with only CGRS personnel being involved. , G. No water source is required. ' H. The access route will be Interstate 25 to State Highway 66 to Weld County Road . 13 which is adjacent to the study area. Approximately 17, 25-ton trucks will be used to haul coal ash. As previously mentioned the project: will occur over a two month period with only light, single vehicle traffic from Fort Collins to the study area. • I. ' Initial traffic will consist of 20 cubic yard trucks, which will transport coal ash from Public service facilities in the Denver area to the project site. J. No sewage facilities are associated the proposed use. K. Coal ash is not combustible and will be placed below grade. AS such; fire ._ protection equipment will not be required. L. No commercial or domestic animals will be allowed within the pilot study area. M. It is estimated that 400 tons of coal ash will be placed below grade. A trench measuring some 10 feet by 100 feet will be excavated and native soil • stockpiled adjacent to the trench. N. The coal ash will be contained below grade and storm water retention issues are not a concern. O. There will be no debris associated with this operation. Varta Coal Ash Burial Project Amendment Application for Use by Special;Review Permit Weld County,Colorado Page 2 1 / P. All landscaping and erosion control will conform with existing use. Q. Not applicable. R. It is anticipated that coal ash burial will take place over a one week period with monitoring activities to take place over a two month period.: PART THREE A. This study benefits private companies and regulatory agencies in regard to evaluating environmental issues with coal ash disposal. B. This project is consistent with operations previously permitted, which conform with the Weld County Comprehensive plan. C. This project is consistent with the district, as it is an amendment to existing operations. D. This project will not modify any existing land use. E. The coal ash will be contained within a trench and completed at surface with native soils. Groundwater monitoring will occur up and downgradient of the test site. The coal ash can be removed to a dry impoundment if monitoring data indicate potential adverse impact to water resources. Airborne exposure during coal ash placement will be suppressed by water trucks if needed. F. The intended use is consistent with current operations, which include gravel quarry operations and associated reclamation. G. This project is a small-scale pilot project and will not influence redevelopment previously permitted for this site, Varra Coal Ash Burial Project Amendment Application for Use by Special Review Permit Weld County,Colorado Page 3 .1 H. The study area is located in a flood zone, which is of no consequence to this project. I. An adequate water supply is not required for this project. J. Provided in the Use by Special Review permit submitted in April,, 1980 and include as Attachment A. K. With the exception of truck traffic in the first week of the project noise is not an issue and we recommend the noise report requirement be waived. L. A soil report was filed with the original USR. The area of interest covers less . than 0.023 acres and soil limitations are not an issue with this project. M. Adjacent property owners within 500 feet of the subject property as identified by the Weld County Assessor are presented in Attachment B and depicted on the area use plat. N. Mineral owners of the subject property is Varra Companies as documented. by the Weld County Clerk and Recorder. • Varra Coal Ash Burial Project Amendment Application for Use by Special Review Permit Weld County,Colorado Page 4 • WELD COUNTY,COLORADO WELD COUNTY,COLORADO ' `DEPARTMENT.OF PLANNING SERVICES HAJ O DEPARTMENT OF PLANNING SERVICES 1460 N.17TH AVENUE 1400 N. 17TH AVENUE GREELEY,CO 80631 GREELEY,CO 80631 (970)353.6100 EXT.3540•FAX(970)352-6312 (970)353-6100 EXT.3540 •FAX(970)352-6312 DATE (.27 3 19 71 RECEIPT NO: 0 3 0:2 6 DATE / ,'. /.3 19 t� RECEIPT NO: 0 3 U 2 77 RECEIVED FROM V 44-f- --& RECEIVED FROM L V '• - NO. �/ TYPE FEES NO. TYPE FEES ti`•RE/SE • 7r rOTL /G I` /7 j ,//y, CU 4221 •flEISE, ..12-ZPMHIMHZP/ZPAD /_ • _ , �-� /ZPy,��-r-.G�-r / 4221 -ZPMHIMHZPIZPAD 4221-USR n r 7 - 6 ;' • :422T U'SR�) ( (DU O? 4221 -SITE PLAN REVIEW• j • ( ` Oi}^-o _ t-y_- 4221 -SITE PLAN REVIEW 4221 -COZ 4221 -COZ 4221 •POD 4221 •PUD .4221 -SUBDIVISION 4221 -SUBDIVISION 4221 -BOA 4221 -BOA 4221 -MINOR SUB 4221 •MINOR SUB 4221 -FHDPIGHOP 42.21 -FHDPIGHDP 1 \.REPLAT 4221 •REPLAT '60--RECORDING FEE 6560-RECORDING FEE 4430-MAPS/PUBLICATIONS 4430•MAPS/PUBLICATIONS 4730-INVESTIGATION FEE 4730-INVESTIGATION FEE • 4430•.POSTAGEIHANOLING 4430-POSTAGE/HANDLING U CASH W FHECK NO 171:43 0 TOTAL U CASH 0 CHECK NO- -Sl/7 TOTAL BY / i �r DY WHITE• SJOMER CANARY•FINANCE COPY WHITE- CUSTOMER CANARY•FINANCE COPY Cb MEMORANDUM T�. DATE: February 22, 200248, arra Companies/CGRS Case File COLORADO FROM: Kim Ogle, Planner lllp • SUBJECT: Time Spent on Case Ben Patton's time: Meeting: December 3, 1998 1.5 hours Case Set-up 1.5 hours Julie Chester's time: Meeting: July 31, 2001, Joby Adams 1.5 hours Review File: 4.0 hours Put Case together with Tabs, send to Print Shop 2.0 hours Develop Staff Comments 6.0 hours Revise Staff Comments 1.5 hours Prepare Graphic Documents, i.e., maps, overheads 3.0 hours Field Check and Drive time to Site 2.5 hours • Inventory of Documents 1.0 hours Public Notice for Hearings 1.0 hours - Post Sign PC 1.0 hours Post Sign BCC 1.0 hours Telephone Calls to Referral Agencies and Surrounding Property Owners 3.0 hours Staff Time: Re-notify newspaper, resend Surrounding Property Owners, resend Referral Agencies 4.0 hours Staff Time: Miscellaneous Photocopying, Filing 1.5 hours Planning Commission Hearing 2.0 hours Board of County Commissioners Hearing 2.0 hours Kim Ogle's time: Case Monitoring, including hearings 8.0 hours Total Hours billed 48.0 hours Deposit of Certificate of Designation Fee $ 17114.00 dollars Billing Rates: Planner I x 3.0 hours $ 141.00 dollars - Planner III x 45.0 hours $ 2475.00 dollars Expenditures to date $ 2616.00 dollars Balance of Monies to be returned, per Letter to Glenn Mallory, from Trevor Jiricek, dated August 17, 1998 S 14498.00 dollars (Receipt number 03026 dated 12.3.1998) li Good Morning, Julie Chester, representing the Department of Planning Services VICINITY MAP This is case 3`d AmUSR 248, an application for A Site Specific Development Plan and a Special Review Permit for a Solid Waste Disposal Facility (Coal Ash Burial Project) in the Agricultural Zone District. The Certificate of Designation for this facility will be heard by the Board of County Commissioners on October 10, 2001 as a separate item, due to the thirty day notification time for CD's. This site is located in the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. The specific facility location is East of and adjacent to WCR 13, just North of WCR 26. Thirteen referral agencies reviewed this case and eleven are recommending conditions that have been addressed through the Development Standards and Conditions of Approval. One letter was received on August 16, 2001 from Boatright, Ripp and Sharpe, Attorneys at Law, regarding mineral rights. This issue was addressed through a Condition of Approval which the Department of Planning Services' staff and County Attorney's Office feel that the applicant has met. The applicant sent in a copy of the agreement with Patina Oil Company, which was submitted with the gravel mining permit in 1994. All of the issues of the mineral owners have been addressed. This condition is number 2.A. on page 4, which should now be stricken. • The sign noting the hearing date and location was posted September 10, 2001 by Department of Planning Services staff. PLAT MAP The Weld County Planning Commission recommends that this request be approved for the following reasons: It is the opinion of the Planning Commission and Weld County staff that the applicant has shown compliance with Section 23-2-220 of the Weld County Code, as follows: The proposed use is consistent with Chapter 22 and any other applicable code provisions or ordinances in effect. The Solid Waste Disposal Facility is for a pilot project to determine the applicability of coal ash as a fill product for the reclamation of gravel mining quarries. This application is an amendment to AmUSR-248, which allows for gravel mining in the northwest quarter of Section 31, T3N, R67W of the 6'h P.M., Weld County, Colorado. To clarify, on the record,the numbering scheme for these USR's:the original permit was SUP-248, the original mining permit, which was amended in 1985 to include an additional 155 acres. This case was AmUSR-248. In 1997,Varra applied for a Special Review Permit for Mining on a property owned by the Nelson's on the E2/SE4 of Section 31, T3N, R67W...This was case 2ndAmUSR-248. It appears there was not an agreement between the property owners and Varra to mine that • property and the case was indefinetely continued at the June 17, 1997 Planning Commission. It appears that the dispute was never resolved and the case did not continue. On December 3, 1998, a new case was set up in the Department of Planning Services as 3'd AmUSR-248, apparantely unaware that the 2nd Amended USR had never been approved and completed. As a result,to clear up the matter,a Condition of Approval should be added. COA 3.J. should state, the applicant shall submit a letter requesting the withdrawal of 2nd AmUSR-248. Chapter 22, the Comprehensive Plan of the Weld County Code, Section 22-5-70 lists five Goals for Commercial/Mineral Resources. The original Special Review Permit (USR-248) and it's subsequent amendments were found in conformance with the Comprehensive Plan Goals and Policies for Commercial/Mineral Resources. This proposal will conform to and remain compatible with all of the Commercial/Mineral Resources Goals and Policies. The proposed use is consistent with the intent of the A(Agricultural)Zone District. Section 23-3-40.1. of the Weld County Code provides for Solid Waste Disposal sites and facilities, subject to the additional requirements of Section 23-4-380, as a Use by Special Review in the A (Agricultural) Zone District. This project is also directly related to the reclamation of a gravel mining operation, which is a use permitted by Section 23-3-40.A., in accordance with C.R.S.30-20-100.5,a Certificate of Designation is required. The Certificate of Designation shall not be deemed approved until or unless a Use by Special Review Permit has been approved by the Planning Commission or the Board of County Commissioners where required by Chapter 23 of the Weld County Code. The uses which will be permitted will be compatible with the existing surrounding land uses. Surrounding land uses are primarily agricultural uses and existing mining operations. The closest residential structure is approximately one mile to the south,with a farm and existing structures north and adjacent to the Varra property. The applicant is required to have a well monitoring plan,which is to be approved by both the State of Colorado and the Weld County Department of Public Health and Environment. The applicant has indicated that although the monitoring plan requires the monitoring wells be placed fifty feet from the pilot project trench, indicator monitoring wells will also be located ten to fifteen feet, approximately twenty-five feet and approximately forty feet from the trench. The placing of the indicator monitoring wells between the fifty foot wells ensures early detection of contaminants in the ground water. All other compatibility issues concerning truck traffic, landscaping/buffering and dust are addressed in the Conditions of Approval and Development Standards. The uses which will be permitted will be compatible with future development of the surrounding area as permitted by the existing zoning and with the future development as projected by Chapter 22 of the Weld County Code and any other applicable code provisions or ordinances in effect, or the adopted Master Plans of affected municipalities. The Towns of Firestone and Mead were sent referrals for this application on December 8, 1998 and again on July 13, 2001. The Town of Firestone did not retum their referral on either occasion and the Town of Mead indicated no conflicts with their interests on December 15, 1998. The application complies with Article V of the Weld County Code. The property does lie within the 100 year flood plain, as shown on FIRM Community Panel Map number 080266-0855C, dated September 28, 1982. Approximately four hundred tons of fly ash will be placed in a trench measuring ten feet wide, one hundred feet long and ten feet deep. The trench is considered development in the flood plain and a Flood Hazard Development Permit will be required as a Condition of Approval. Effective December 1, 1999, Building Permits issued on the lot will be required to adhere to the fee structure of the Southwest Weld Road Impact Program Area 3. No structures are being proposed, other than the trench as described above, however, as a Condition of Approval, the applicant shall contact Weld County's Building Inspection Department for any building permit requirements. The Design Standards, Operation Standards, Conditions of Approval, and Development Standards ensure that there are adequate provisions for the protection of health, safety, and welfare of the inhabitants of the neighborhood and County. The Weld County Planning Commission recommends approval of this application, with the attached conditions and development standards. Cindy Etchivery is representing the Department of Public Health and Environment and Don Carroll is here for Department of Public Works should the board have questions regarding any environmental concerns or access issues. Mr. Joby Adams and Mr. Brad Janes, from Varra are present today and I would be glad to answer any questions you have at this time. Am U$I2 248 IteAvivb Ak r., 7,{7,&'5 335 . W1*a°-" huh-si,;,4 41 s4wm rte. 31-3�L7 34 lirrnl.W. nw4 3i -3-47 Jj .cfi / I (G'S otia- -D --ALkartmzL 11S-02 tD1 , o_o II `c-ackstadila/u/1/4-cfz_ , _ 67E> ( 1. s hiS �a3tvt-t5 . /P1754-- 4 1 ,5 [ors C ' ENVIRONMENTAL- CONSTRUCTION • COMPLIANCE 0 • Weld County Planning Dept 3U1411200\ June 7,2001 Ms. Cindi Etchiverry RE CE tV ED Weld County Health Department 1555 N. 17th Avenue • Greeley, Colorado 80631 RE: Varra Coal-Ash Proposal Groundwater Monitoring Plan Weld County Colorado - CGRS No. 1-135-2755aa Dear Ms.Etchiverry: • • Enclosed please find two copies of the groundwater monitoring plan for the referenced project. If you have any questions regarding this letter or require further information, please contact me at (970) 493- ' 7780. Sincerely, • CGRS, NC. i�!!1.c-741.6 i A i,b,, • Joby .Adams,P.G. N.-Z.1i pal/Hydrogeologist ' • Attachments . cc: Mr.Chris Varra—Varra Companies - Ms. Shari Lockman—Weld County Planning wegwnlunllnns • P.O. BOX 1489 ° FORT COLLINS, COLORADO 80522 a PHONE: 970-493-7780 2 FAX: 970-493-7986 Tra caltie Co i Transamerica Title Insurance Co . . , mod y •• Boulder County , - I , i I I I, r 1317 SPrvc 54 60, Boulder —.. � • • I • ; • Denver County I1837 California . Denver I California"Division. -` . 1 • 5344056. r 1330 Broadway i Douglas County 2000 Wen Littleton Blvd, Llnlelon Oakland, California 94612 i pT ' 794.4255 — I (415) 835-4070, - • ■ransamreca Title • _ I Eagle—Pitkin Counties • Insurance Drawer e I i ��"' 22 01611 • • • Company Jeffenon..county .. .. I a + 7580 West Colfax Avenue, Lakewood i i = I - .. 297"1381 Northwest'Division • • • 315 SM. Fourth Avenue .' L arimer 151 Wed Moun n AveCoynnue Fort Collins ' • Portland, Oregon 97204 - 482-1Z8 • !! (503) 222-9937; • • I ` Mesa County I • I 531 Rood Avenue, Grand Junction I I 242 234 • 1 I • . Pueblo County • - • 627 North IIa[n Sam Pueblo, Cc,cr:do 81003 I• • • • I (30.9) 543-0451 „ n-t° .74 A Service of • _ ' Southwest Division z:.' 'r +_*•a I 'j ('f.:. Transamerica Corporation Weld County 114 West Adams Street ! I P. G. Box 370 I I Greeley, Colorado2.223380471 Phoenix, Arizona' 85003 � (��I - i '` f• (602)•262-0511 • - lII 3s2 z2at • , Agency Department • I 1837 California Street, Denver ' 534-9066 - I AGENTS THROUGHOUT COLORADO • .._ >r•s�tirra 5 • .. , _ w:, .S. wn ne r.+u..,—r.+nr rt _ a r LAaat Llt a'1' a c_ r _ (AMENDED 10 17-701 1. ; a - i - : - - I I . •. . Policy of hi,tie Insurance • . IJ . .: . P . - • • . .• . ' Issued by. .• . . . • . . . Transamerica Title Insurance Company •t, ` I • ---.SUBJECT TO'THE SCI-IEDULE:,OF EXCLUSIONS FROM COVERAGE, THE EXCEPTIONS CON= ' I• TAINFD IN SCHEDULE B•'AND THE'PROVISIONS OF THE..CONDITIONS AND STIPULATIONS • HEREOF, TRANSAMERICA TITLE:INSURANCE'COMPANY, a "California corporation, herein -called . •''L the Company,insures,ae*of Date of Policy shown 'a Schedule A, against loss or damage, not exceeding the . • atnopnt of insurance Stated in Schedule A, and costs, attorneys' fees and expenses which the Company inay become obligated to pay hereunder,,sustained or incurred by the insured by reason of: r. Title to the estate or'interest describ A b ed-in:Schedulebeing vested•otherwise than'as stated therein: /; - .. _ - - 2. Any defect in or lien or:encumbrance on such title; . . ' • 3. Lack,of a right of access to and from the land; or • ' 4 Unmarketability of such-dde. - - In Witness Whereof Transamerica Title hieurance.Company has caused this policy to be signed and scaled • • ' by its duly anthorizcd officers:au -Of of.Policy.rhown in,Schedule:A. • - - Transamertcaitle Insurance Company .By.: :�.�'! President. • .• . �7a,e f tttpP0P • • arc .,`t... Q.. �`� • • f a(i ��. • 4 - ` t+ 1 �� Attest e' .� ' : ,y. 1. _ • .(`• f,� � ,cR}' -k .&^ Secretary . • . L t IT ftflt{ " ' , • - • -' --' -- '-- -----'-- Authorized Officer or Agent . - . : =SC.HEAULE A �. NUMBER 25,001,648-0 I AMOUNT - 1.,,,,„ 0.•00 . . $235,00 '`- .:Dated this: '• �- --day of ` : - - August... : ,-19 7`� at tM hour of 8;00 o'clo is A.M: . ''��' 4th A st::'. + 1. . The name of the Insured and the estate, of Interest of-the insured In the Iona deicribed belovi and coy- ' ,t rr .Q Y: F >j+1. Brad by this.policy is.as.follows: •i -• - " -,- .-•1.7-1 : 7.4 , PASQUALE VARRA, in•-fee; simplee . . • . 2. The•land, the title to which is insured, is described or known.as follows: • A tract of .land located:.in the .NW& "; of Section 31, Township North, Range 67 West:`of the 6th P.M., WELD COUNT? COLORADO; said .tract being -more.',particularly :described. ;as ..follows. , , • Beginning at the •:Northwest corner of :said Section:31 -:' .i • K v, thence 8. 00° 08' :22" E along the o West line' f idtNW4, 2652,,.51- feet . to the a corner of _.said Section •31;_..—: -` : '-: • •. . • thence S 89° 13' 37": E along -the South, tine .-of said NW*, Section 31,.,. • t • 2524.75 feet to the Southeast. corner Of said NWl, ' thence "North" along the East line -of said. N.Wl, Section 31,. 2651..21 feet to the a • . r: .fcorner "of said Section 31, - • thence, N 89° 11' 58" W 'along the' North line of the aforementioned • NWl, Section 3l, 2531,23afeet to. the POINT OF 'SEGINNING, ' SCHEDULE B ` • • .. .• r.: This Policy does not insure against lass:or'damo"ge byreason of the_following:.. 174 1: Rights or claims of parties in•possesslop.riot showp.:bf the public:records .. -o r,{` , ' 2. Easements, or claims of easements, not phown by the public records : • . P • 3'. -Discrepancies, conflicts•in boundary tines; shortage.in area;.ehaoachments, 'and any facts which"at - t,l, correct survey and inspection -of the premises would'disclose,and which are:not shown by the' public records. ' ._ 4. Any lien, or right to a lien, for:services, labor, or:material. heretofore'br hereefierr.ftimished,. Inr � ': posed by.law and not shown by the public records. -- -. " -•, f 5, + Taxes due and payable;and any tax, special assessments, charge or lien imposed for water or sewer• - • • 'c' • • • service, or for any other special taxing district ` •' • - ' •_ '..,<`:s> f-, • R . ` . - - SCHEDULE OF EXCLUSIONS FROM COVERAGE ,The following matters.are expressly exclpded from the covera• ge of this policy: My law, ordinance or,governmental regulation (includipg but not limited to-building and zoning ordinances) re- stricting or regulating or prohibiting the occupancy, use or enjoyment of the land, or regulating- the.character,..;, dimensions or location of any.,improvement now or hereaftqr erected on the land, or prohibiting a separation in•: • ownership or a reduction in the dimensions or area of.the land, or the effect of any violation of any such law, ordl-: e: pence or governmental regulation. • ;2. Rights of eminent domain or governmental rights of police power unless notice of the exercise of such.rights appears '. • in.the public records at Date of Policy. • .. . - 3: Defects, liens, encumbrances, adverse claims, or other. matters (a) created, suffered, assumed or agreed to by the.; 't insured claimant; (b)•not known to the Company.and not shown`.by::�thn public records but.known to the insured,' claimant either at Date of Policy or at the date such claimant acquired''an.estate or Interest' insured by this policy;;,` and-not disclosed in writing by the insured claimant to the Company prior to the date such insured claimant became=: . an insured hereunder; (c) resulting.in no:less,or.damage`to the insured claimant; (d) attaching or created. subse- quentto Date of Policy;'or (e).resulting in-loss or damage which would not have been sustained if the insured claim- i - ant had paid value for the estate or interest'insured by this policy. • L -: CONDITIONS AND STIPULATIONS • • • • 1. DEFINITION OF TERMS (b) The insured shall notify the Company promptly in . ,. : ..f. :,• •• The following terms:when used in this policy mean: writing (1),In case any action or procenlirig is begun or de- ` Tense is interposed as set forth in (a) above, (ii) in case knowl- " " - (a) "Insured": the Insured named In•Schedule A,- rind: edge shall come to an.lnsured hereunder of any claim of title subject to -any rights or defenses the .Company may have . or interest which is adverse to the title to the estate or interest, • ' against the named Insured, those who:succeed to the interest as insured,.;and.-which•might cause loss.or damage for which .-of such insured by operation-of law es.distinguished':from ` ' the'Company,may be;liable by virtue of this policy, or (iii) if -4, purchase indluding, but riot limited to; ,heirs, distributees, title to the estate on interest,-as_ insured, is rejected as un- . ::r devisees, survivors, personal representatives, next. of kin;'or-: ; 'marketable. If.such. prompt notice shall not be given to the .r:, corporate.or fiduciary.successors.; g... , :." Company„then.as to such insured all liability of the Company ' ..;;,., • (b) "insured claimant": an insured claiming lose or dam shall, cease and.terminate inregard to the matter or matters • age hereunder' - - for,Which such pro shall hies Is required; provided, however, (c) "knowledge": " actual knowledge, ,note constructive• ". . - that failure to notlfythall in no case prejudice the rights of any - 'owledge or notice which may be imputed to-an insured by such Insured:Under this policy unless l the shall beof - :usun of any , ; such- lccd by ouch failure and then onl • to the extent .of public records. S a (d) "land": the land described, specifically or by reference such:preJudlce;. • 'ii, in Schedule A, and improvements affixed thereto which by law (c)'The Compflny shall have the right at. its own cost to - constitute real property; provided, however, the term "land" Institute and without undue delay prosecute any action or • does • ,not include any property beyond the lines of the'area Proceeding or to do any other act which in its opinion may be :2, .specifically described or referred to in Schedule A, nor. any necessary or desirable to establish the title to the estate or - - right, title, interest, 'estate or•easement in abutting 'streets, interest es 'Insured,'and the Company may take any aggro- ' roads, avenues; alleys, lanes, ways or waterways, but nothing prate action under the terms of this policy, whether or not • ' 124- herein shall modify or_ limit the-extent to which a right of It,shall.be,liable thereund9r, and shall not [hereby concede "•:access-to and from,the•land.is Insured by this lie . •. 1.1abWty..or waive: Po y eqY:p;oviston of this policy. t (e) 'mortgage":•mortgage deed of trust, trust deed or. - ;t (d)-Whenever the Company shall have brought any action other security instrument... . or interposed a defense as required or permitted by the pro- : (f) "public records."i those'records-Which by law Impart visions'of 'this poliey...the Company may-.pursue any such twnstruct ve notice of matters relating to said land. Iltlgatlon to final determinetlon by a court of competent Juris- ':' '-S :::• ..• . . . : . . .: diction and expressly reserves the right, in its sole discretion, :. to appeal from_ any.adverse judgment or order. 1 'CONTINUATION OF INSURANCE 'AFTER CONVEYANCE' OF '' - - TITLE • (e) In•all'crises ':where this policy permits. or requires the The coverage of this - Company to,prosecute or provide for the defense of any action .:;.-.1,',. g 'policy.shall continue'in force as of or proceeding,:the insured hereunder shall secure to the ' 'Date.of Policy in favor of an insured so long as such insured .Company the right to so prosecute or provide defense in such •:_• '!:'.'n.V. :retains an estate or interest In the.land, or holds an indebted- • • action or proceeding,-and all'appeals therein and permit:the'°';'`3..-:::" c.,' ness secured by a urchase money mortgage given by a put- , Company:to.use,.at its option, the name of such insured for chaser from such Insured, or so-long as such insured'Shall - .such 'purpose.. Whenever requested by the Company, such •� :v .;:...4.have--liability by reason of• _covenants'of'.warrantyy.made:by ' : insured shall give the.Company all reasonable aid in any such _ such insured In any transfer or-conveyance-of-such estate'or action or proceeding,In effecting settlement,securing evidence, : •'"interest; provided, however, this policy shall not continue in ' obtaining witnesses, nr prosecuting or defending.such action w,- force'in favor of any purchaser from such insured of either or proceeding; and.the Company'shall reimburse such insured - :• . Said estate or interest or the indebtedness secured by-a.pur , for any,expense so.'incurred. -- chase money_mortgage given•to such insured. - : - ' • . 3. DEFENSE AND PROSECUTION OF ACTIONS—:NOTICE,. OF • . 4. NOTICE OF.LOSS-LIMITATIONOF ACTION -E.-- . . - - CLAIM TO BE GIVEN BY AN INSURED CLAIMANT ':.r:'l• '•P•s. ''.:. •' In addition to the notices required under paragraph 3(b) j, • . . • • -:-_ of;these'Conditions and Stipulations, a statement m.writing t (a) The Company, -at its own cost and without undue •' .of any''loss or damage for which it is claimed the Company delay, shall provide for the defense of an insured in all litiga- ; Is liable_under this policy shall be furnished to the Company tion consisting of actions or proceedings commenced against ,. within BO days after such loss or damage shall have been de- • - h insured, or a defense interposed against an insured in an termined-and 'no right of action shall accrue to an insured on to.enforce a contract for a sale of-the'estate or interest claimant until 30 days'after such statement shall have been • :t. • ... said land, to the extent that such litigation is founded upon furnished. Failure to furnish such statement of loss or damage ;:an alleged defect. lien, encumbrance, or other matter insured 'shall terminate any liability of the Company under this policy • against by this policy. as to suchlosspr damage_. ' • .. . . .. . . - . ' W .Continued on Front of:Back Cover- _ - . • r' •. ) r, . HOWE.R : .. • 00 } SCHEDULE E3 ` \F-TThl.,z� CONTINUED " -'.6. ' Rights of::way .for county roads::30 feet wide de on either eraside eP f section . and township lines;;;'.as , established by - Commissioners :,for•We.ld County, recorded October 14, 1889 in Book 86 .. at:Page' 273, Weld County Records . ' . 7, . Right of way, for nn irrigation ditch through-tbe N.t of. the NWI and `'. the: use'of. all, lands necessary for the construction ,'. operation• and- ,, ; •`' ,.. ,- maintenan.ce :of- said ditch as granted to Charles. W. Burbridge by night of Way' Deed` recorded March 16, 1888 , in Book 77 at Page 32," T ' `:; µ` 1.. Weld ;County:Records, • is not NOTE.:. The width and..exact- location of said._right of way y : r disclosed of record :f-1 ,',. .; t213-:,'. P *ight:'of way and,easemer_t over' the E' of. the NW* to construct :arerat maintain, replace. and remove such communication systems , as -may"from:-.Ui to' time be :required, consistingof .underground cables , . wires,• conduits, manholes , drains and splicing boxes , and surface testing terminals, - repeaters and markers-, and other appurtenances, together with theri:Oht of ingress'and egress as granted to - America Telephone and 'Telegraph : . Company by instrument. .recorded April 254. '1941 in Book 1078-at-Page. 75. Weld County. Records . NOTE: The exact location of said right .of :way is._ -not disclosedrof.`reti 9_ The right to enter upon said lands and to.construct ,, reconstruct , re place , repair , operate and maintain anelectric-.transmission and/or":' distribution line or system as .grantedto Union .Rural Electric Associ� ation, Inc. , by right of way easement recorded April 24, 1969 in Book 594' under Reception No. 1515662, Weld County Records',. said right of we: being over the East side of the NWi, • 10. A right of 'way and easement 20-feet in width to construct, operate ,r> ; maintain, replace,: and _remove', such communication systems as =may"from ' time to time be necessary,, consisting of underground cables, wires;.- ' i conduits, drains and splicing boxes , and surface testing terminals;. / :3- repenters , repeater housings and markers , manholes , and other appurten together with the .rights of ingress and egress' as-' granted to', America Telephone rand Telegraph.Company by-instrument recorded ,May; 21 1968 in Book 595 under' Reception No. 1516665, Weld County' Recor s'. .rec d , 1 • NOTE: The exact' location of said right -of way not 11.. Oil and Gas Lease • �dated 'February 14, 1970''between Louis J. Rademacher; and Frances' J. Rademacher, lessor, and T. S. Pace, Lessee, for: a-_prit:_ mary term of 5 years recorded March 19, 1970 in Book 622 under Recepti No'. 154407.1, Weld County:Records , and' any and- all assignments thereof; or interest therein ;t :4 ,I • I 1•. • _ NUMBER • ; SCHEDULE [3 rd5,001 ,c1$-0 - . ='V..: CONTINUED • r_____� • ' ,'l2.' Fishing and Hunting .Lease dated February 15, 1962 between Ted J:—, . Rademacher, Lessor,- and the Longs Peak Chapter 'of the Izaac Walton . ' : League,' Lessee, for: a term beginning- February .15, 1962 until December l 30,:.;1967 with- an option to renew said lease for another 5 years , recorded January 15, 1964 in Book 503 under: Roceptioh .No,. '1426371 ,. .Weld County - . Records. .:.j 13. The St. /rain Reservoir as evidenced by- instrument- filed under . Reception No: 119360, ' Weld -'County:'Records , .the Wild Cat Reservoir as : . evidenced by instrument.'filed under 'Reception 'NO. 120349, Weld County ' Records ,. the Macarthy'.Reservoir 'as evidenced. by instrument. filed under- :,, ,. Reception No. 138075i- Weld' Countr.Redords , and a right' of way therefore. --'" 14. A right rot way to construct, maintain . . inspect', operate,- replace change ;-- or remover a permanent easement 50 feet in width together. with the ! rights or ingress and .egress as granted to Amoco Production Company • by right of way agreement recorded .September: l0;' 1973 in Book 699 under Reception No. 1620944, Weld County Records , said right oi' way • is described as- running East and. West- from the-West line of the NI NWi, Section 31 to the East line of the NW ' Section 31 T3N R67W. 15, Oil and Gas Lease between Louis J. Rademacher and Frances J. Rademacher,,i_.'I Lessors , and Amoco Production..Company; Lessee, ,for a primary term of 1 - year , recorded March 7, 1974 in Book 710 as Reception No. 1631591, ' Weld County Records, and any and all assignments thereof or interests. therein. . :.r 16. Reservation of one-half of all oil and gas for a term of 15 years from the date hereof, and an undivided one-half non-participating: royalty interest in . and to all royalties derived from oil and gas production for the production life-time of any well commenced within :. the said 15 year term, regardless of when such well or wells might : :., begin to produce , as contained in Warranty Deed; from Louis J. Rademacher and Frances J. Rademacher, dated August 1, 1974,- recorded August 13 , 1974 in Book 721 as Reception No:, 1642675, Weld County' Records , and any and. all assignments thereof or '.int'erests therein. 17. A resident tenancy, of all improved 'buildings ' on the subject ptoperty for " a period of 6 months -from the date hereof or until Grantors shall . obtain a certificate of- occupancy for a new residence presently being constructed by Grantors, whichever shall -first occur, .as • contained in Warranty Deed from Louis J. Rademacher and Frances . J. Rademacher, dated August 1, 1974, recorded August 13', .1974 in Book 721 as Reception No.. 16426.75, Weld County Records. • a. at, . ,. B+4!�+M'. i �'SYI'TjrX�eT ^s'4+='�3'- :Ta .:ri , f•.u1IFFR SCHEDULE S • •h :25,00i ,sns-o ,, CO�r:w< 3 18. Th* use- or all canals and pasture land upon the subject property for a ' • term of 18 months . from the date hereof as contained in Warranty Deed , ..,_ from Louis J. Rademacher and Frances J. Rademacher;:: dated August 1, : :;i,,.. 1974, recorded August. 13, -1974 in Book 721 Its. Reception No. .2642675,..!...: Weld County Records 19.. Deed of Trust �from •Pasquale Varra _to the ,Public. ,Trustee of Weld County.;_ Colorado - fin-the useof-:Louis:.Rademacher' and Frances Joan Rademacher' 'lli_ - • to' secure $220,,000:00, -dated August'.1, 1974;.- recorded August 13, 1974 .., in Book 721 ns Reception No.. 1642676, Weld County Records. : : • • • • - . COLORADO REGION,ALTA OWNER'S POLICY-FORM 0-1070 IAMENOED 1017.701 ' xF J 1 b i---�' - Canlinued from R C.. '-,,r•,nt f'p • ' i . . % . . • • s- orrtoNs TO PAY OR OTHERWISE SETTLE CLAIMS inn reels covered Ir, -mount so paid •shall bet deenit'd a P l to said insured owner. The Company shall have the option to pay or otherwise - { settle for or in the name of an insured claimant any claim in- 10. gppORTIt:7NM) _ sured against or to terminate all liability and obligations of • . the Company hereunder by paying or tendering payment of If the land deticonsisls of two or more the amount of insurance undr this policy together with any parcels which are'sita and a loss is estab- costs, attorneys' fees and expenses Incurred up to the time ' lished affecting o arcels but not all, the oil,... of such payment or tender of payment, by the insured claim- ' loss • • • • shall be coma Pro rata basis as 1( s^ • ' "ant and authorized by the Company.. ' the amount of inpolicy was divided pro -rata as to the vale each separate parcel l. " 6. DETERMINATION AND• PAYMENT OF• LOSS - to the whole, excllents-made subsequent ' . •T. - to Date of Policy�r value has otherwise • :, ., (a) The liability of the Company under this policy shall been agreed upon 1 by-the Company and t>.y 'lr 'no case exceed the least of: the insured at thice of this policy and . -'-��' ` - (I) the-actual loss of the insured claimant; or. shown by an expq: or by an endorsement tr •'. , attached hereto. l' 't• -, (H) the amount of insurance in Schedule A: • - ` 't .., t _ - (b) The Company will pry. In addition to an loss Insured `^••: . '' t' . 11. SUBROGATION.;against by (his policy, all costs imposed upon an y )R SETTLEMENT - w1 in till- t..a•.: gallon carried on by the Company for such Insured, and all • Whenever tho% settled a claim under :'^y t:'-. "Costs, attorneys' fees and expenses in'litigation carried on by this policy, all .4 I.II vest in the Company �3,: such insured with the written authorization of the Compan unaffected by an , y shall be subrogat'.to ti ts nd reme- ;-, . (c) When:liability has been definitely fixed In accordance ?�la all tights and reme- • , 'with the conditions of this policy, the loss or damage-shall be dies which such I"4'd have had against any payable within 30 days thereafter. • person or property. aim_had this policy,not been Issued, and .1!Company, such insured ' - claimant shall translall rights and remedies .--t .'J. ' 7. LIMITATION OF LIABILITY - ' ' - against any personary In order to-perfect '1 . ? - ' --No:claim shall arise or.be maintained under this,policy such right ofsubrt �it the Company to .. �.';. (a) if the Company, after having receLved,notice of an ege use the name of sot/in any transaction or ' defect,-lien or encumbrance insured •against hereunder, by litigation involving ver peaies• if the payment litigation or otherwise, removes such defect, lien"orencum- does.not.wver the gdaiinant, the Company brance or establishes the title, as insured, within a reasonable shall be subrbgate�a remedies. in the pro- . time after receipt of such notice; (b) in the event of a liti non portion which said he amount of said loss. . . until there has been a final determination by a court of com- If loss should resulesuch insured claimant, petent jurisdiction, and disposition of all appeals therefrom, such act shall not the Company, 'in that a. • adverse to the title, as insured,. as provided in paragraph 3 event, shall be req at part of any losses hereof; or (c) for liability voluntarily assumed by an insured insured against her exceed the amount, if { in settling any claim or suit without prior written consent of any, lost to the Co the ed ment of the the Company. right of subrogation t ,. 8. REDUCTION OF LIABILITY 12. LIABILITY LIMIT • All payments under this policy, except payments made for This instrumentIndorsements and other costs, attorneys' fits Doti expenses, shall reduce the amount Instruments, if any, the Company Is the entire policy and the insured and the of the insurance pro tanto. No payment shall be made without producing this policy for endorsement of such payment unless Company. , the policy be lost or destroyed, in which case proof of such Any claim of loiether or not haled on loss or destruction shall be furnished to the satisfaction of negligence, and whirl' e status of the title to the Company. the estate or interestor any action asserting such claim, shall be *visions and conditions 9. LIABILITY NONCUMULATIVE and stipulations of th'j No amendment t to this policy can he ' It is expressly understood that the amount of insurance made except by writtOon or attached hereto under this policy shall he reduced by any amount the Com- signed by either the Pfresident, the Secretary. puny may pay under policy insuring either (a) a mortgage an Assistant Secretai officer or authorized shown or referred to in Schedule B hereof which is a lien on .. signatory of. the Com the estate or interest covered by this policy, or (b) a mortgage. hereafter executed by an insured which is a charge or lien on 13. NOTICES, WHERE • I • the estate or interest described or referred to in Schedule A, and the amount so paid shall be deemed a payment under this All notices requirthe Company and any policy. The Company-shall have the option to apply to the pay- statement in writing itrnished the Company men( of any such mortgages any amount that otherwise would ' shall he Addressed to le Insurance Company, i'-t he payable hereunder to the insured owner of the estate or 1837 California St., Dcn202. s • 9 • ..1 .. Identify Results http://maps.merrick.coni/WebsiiP/welcUsetSql.asp?cmd=accdet&acct=O1898901&typC Oil Valuation Account#:.O1898901 • Parcel#: 120931000049 Owners Name & Address; Property Address PATINA OIL & GAS CORPORATION Street: C/O LOGAN & FIRMINE INC City: 333 W HAMPDEN AVE #740 ENGLEWOOD, CO 80110 Business/Complex: Legal Description LEASEHOLD INT SE4NW4 31 3 67 GOULD P 31-11 JI Land Value $345,751.00 Land Assessed Value $302,530.00 Imnr. Value $0.00 Imor. Assessed Value $0.00 Total Value $345,751.00 Total Assessed Value $302,530.00 Total Taxes: Amount Due: Map#: Bordering County: Township Range Section Quart. Sec. Subdivison Name Block# Lot# 03 - 6T- 31 - 0. - - Acres:. Sq..Ft.: Sale Price Sale Date , Deed Type Reception # $0.00 • • 1 of 1 - 07/13/2001 9:03 AM I h WELD COUNTY,COLORADO 1 C' ≥4{' DEPARTMENT OF PLANNING SERVICES` 1555 N.17TH AVENUE GREELEY,CO 80631 , PHONE(970)353-6100,Exr.3540 -FAX(970)304-6498 DATE: / q 1 —y2 {001 RECEIPT S 3 i i 6 '_ RECEIVED FROM: 1_� ae• f i- NO. TYPE FEES {u 4221 -RE/SE -$; 4221 -ZPMH 4221 -USR dk b. 4221 -SITE PLAN REVIEW 4221 -COZ -` ' 4221 -PUD kP, -t: 4221 -SUBDIVISION " 4221 -BOA uy4:.i }• . 4221 -FHDP/GHDP : 4430-MAPS/PUBLICATIONS v5tr: 4430-POSTAGE 4430-COPIES ,4730-INVESTIGATION FEE 656telaORDING FEE ) J 2(11mtr# - IC) .i• ' MISS. -�J ✓ v, uu O CASH LCl HECK NO: O TOTAL BY: WHITE-CUSTOMER CANARY-FINANCE PINK-FILE REFERRAL LIST NAME:Colorado Groundwater Resource Services/Varra Companies CASE NUMBER:3rd AmUSR-248 REFERRALS SENT: August 2,2001 REFERRALS TO BE RECEIVED BY:July 20,2001 COUNTY TOWNS and CITIES Attomey Ault X_Health Department _Brighton _Extension Service Broomfield Emergency Management Office Dacono Sheriffs Office Eaton X_Public Works Erie Housing Authority _Evans _Airport Authority _X Firestone Building Inspection _Fort Lupton Code Enforcement . Frederick STATE Garden City _X Division of Water Resources _Gilcrest X_Geological Survey Greeley _X Department of Health . _Grover Department of Transportation f' _Hudson Historical Society Johnstown Water Conservation Board Keenesburg Oil.and Gas Conservation Commission Kersey Division of Wildlife: LaSalle Loveland _Lochbuie _X Greeley Longmont X_Division of Minerals/Geology X_Mead FIRE DISTRICTS _Milliken _Ault F-1 New Raymer _Berthoud F-2 Northglenn Briggsdale F-24 _Nunn ' Brighton F-3 _Pierce Eaton F-4 Platteville _Fort Lupton F-5 _Severance Galeton F-6 Thornton Hudson F-7 _Windsor Johnstown F-8 La Salle F-9 _X_Mountain-View F-10 COUNTIES Milliken F-11 Adams • Nunn F-12 • Boulder Pawnee F-22 Larimer Platteville F-13 _Platte Valley F-14 FEDERAL GOVERNMENT AGENCIES Poudre Valley F-15 X_US Army Corps of Engineers Raymer F-2 USDA-APHIS Veterinary Service Southeast Weld F-16 Federal Aviation Administration Windsor/Severance F-17 Federal Communication Commission _Wiggins F-18 _Union Colony F-20 SOIL CONSERVATION DISTRICTS Brighton OTHER _Fort Collins _School District _Greeley Ditch Company X_Longmont West Adams COMMISSION/BOARD MEMBER REFERRAL LIST NAME:Colorado Groundwater Resource Services/Varra Companies CASE NUMBER:3'' AmUSR-248 REFERRALS SENT: July 13,2601 REFERRALS TO BE RECEIVED BY:July 20,2001 COUNTY TOWNS and CITIES Attorney Ault _X Health Department • Brighton Extension Service Broomfield Emergency Management Office Dacono Sheriffs Office Eaton X_Public Works Erie Housing Authority • Evans Airport Authority _X Firestone ' Building Inspection _Fort Lupton Code Enforcement Frederick STATE Garden City • _X Division of Water Resources .Gilcrest X Geological Survey Greeley X_Department of Health Grover Department of Transportation Hudson Historical Society Johnstown Water Conservation Board Keenesburg Oil and Gas Conservation Commission _Kersey Division of Wildlife: LaSalle Loveland Lochbuie X_Greeley Longmont. X_Division of Minerals/Geology X_Mead FIRE DISTRICTS Milliken Ault F-1 New Raymer Berthoud F-2 Northglenn Briggsdale F-24 Nunn Brighton F-3 _Pierce Eaton F-4 Platteville Fort Lupton F-5 • Severance Galeton F-6 Thornton Hudson F-7 Windsor Johnstown F-8 La Salle F-9 X_Mountain View F-10 COUNTIES. Milliken F-11 • Adams Nunn F-12 Boulder Pawnee F-22 Larimer Platteville F-13 Platte Valley F-14 FEDERAL GOVERNMENT AGENCIES _Poudre Valley F-15 _X_US Army Corps of Engineers • Raymer F-2 USDA-APHIS Veterinary Service Southeast Weld F-16 Federal,Aviation.Administration Windsor/Severance F-17 _Federal Communication Commission Wiggins F-18 Union Colony F-20 SOIL CONSERVATION DISTRICTS Brighton. OTHER Fort Collins School District • Greeley Ditch Company XLongmont. West Adams COMMISSION/BOARD MEMBER Jul-16-01 01 r.11P P .01 ' ayWeld County' Referral WUk. June 29, 2001 COLORADO. • The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number.- 3fd AmUSR-248' Resource Servidos/Varra • Companies Please Reply By July 20, 2001 Planner Juliu Chester •Project' 31°Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. • Legal Pt. of WW4 of Sect.31,.T3N', R67W of the 6th P.M_, Weld County,.Colorado. Location Approximately 1'mile north of WCR 26;approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 The application is submitted.to you.for review and recommendation. Any comments or recommendation you consider relevant.to this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed'ld be a positive response to the Department of Planning Services. If:you have any further ' questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) ' August 21,2001. ❑ We have reviewed the-requesf and find that if does/does not comply with our Comprehensive Plan U We have reviewed the request and find no conflicts with our interests, O See attached letter. Comments: No comment at this time. The District requests that a noov of the results and findings be forwarded to allow further evaluation. ' Signature t V., ` . ) S7 oL e.v tkee VDate 7 — f(c O Agency Central Weld County Water District) tWeld County Planning Dept. •1555 N. 171n Ave.oreelcy.CO. 80631 +'.(970)353-6100 ext.3540 ¢(970)004-6498 fax 12/15/1998 03:43 970535085' TOWN OF MEAD - PAGE 01 • yO2.1314 nos, iro �� DEC, o� Weld G n; of ral e8, 1998 COLORADO • The Weld County Department of Planning Services has received the following item for review: Applicant Colorado•Groundwater Case Number 3rd AmUSR-248 Resource Services/Vans Companies P/ease Reply By December29, 1986 Planner Ben Patton . Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Pemiitfora Coal Ash Burial Project Legal Partofthe-NW4 of Section 31,Tab; R67W of the 6th P.M.,Weld County, Colorado. Location Approximatelyi mile north Of WCR 26; approximately 1'mile west of WCR 15. Parcel Number 1209 31 000049 • •The application is submitted to you for review and'recammendation. Any'comments or recommendation you. consider relevant to this request would be appreciated. Please reply by the above listed date so thatwe may give full consideration to your recommendation. Any response not received beforeor on this date may be deemed to be a positive response to the Department of Planning Services; If you have any further questions. regarding the application, please call the Planner associated with the request. • Weld County Planning Commission Hearing(if applicable) January 19, 1999 ❑ We have reviewed the request and find that it does/does not comply with our Comprehensive Plan We have reviewed the request and find no conflicts with our interests. Cl See attached letter. • Comments: • a f` Signature . O n /1J'1 A Ildf- v_zhckt Date I(2?-:15 9a Agency o TYa�l1lL f 4Weld County Planning-Dept. *1460 N.17th Ave.Greeley,CO.8,t t .7(970)353-6100 ext3540 4(970)352.6312 fax • 12/15/98 15:50 TX/RX N0.3771 P.001 5 Weld County Referral December 8, 1998 Ci . . COLORADO • The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3rd AmUSR-248 Resource Services/Varra Companies Please Reply By December 29, 1998 Planner Ben Patton. G k.. Project 3rd Amendment to a Site Specific Development Plan and Use by-Special Review Permit for a Coal Ash Burial Project. Legal Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209'31 000049 The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if'applicable) January 19, 1999 • • ❑ We have reviewed the request and find that it does/does not comply with our Comprehensive Plan -9-41/e have reviewed the request and find no conflicts with our interests. ❑ See attached letter. . Comments: • • Signature Date (a-c.i. •98 Agency fd e +Weld County Planning Dept. 41400 N. 17th Ave.Greeley, CO.80631 4-(970)353-6100 ext.3540 •?(970)352-6312 fax County Planning Dept. • 200'1 lie i(MO4 RECEWED . Weld -County Referral IJune 29, 2001 • • COLORADO • The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3r°AmUSR-248 Resource Services/Varra Companies • Please Reply By July 20, 2001 Planner • Julie Chester Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. Legal Pt.of NW4 of Sect. 31, T3N, R67W of the 6th P.M., Weld County, Colorado. Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 The application is submitted to you for review and recommendation. My comments or recommendation you consider relevant to,this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) August 21, 2001 O We have reviewed the request and find that it does/does not comply with our Comprehensive Plan We have reviewed the request and find no conflicts with our interests. 0 See attached letter. Comments: (74-S reviewed Gµtc tYrer- /it CI-41.4+ a"j / 9 9,, CG-S retire&) /e4.v 69E-99—ODae UV C0710 Mite) Acct plot- ektuut ee cd Signature V Date / L� 4 Q Age • ncy (CA—a 4f eat)t) cQ I'UQcD +Weld County Planning Dept 31555 N. 17th Ave.Greeley,CO.80631 +(970)353-6100 ext.3540 4(970)304-6498 fax ,� • c • —. •• June 29, 2001 Weld County Planning Dept. .. ,;ULi82O1 • COLORADO RECEIV e following item for review: g. The Weld County Department of Planning Services has recely Applicant Colorado Groundwater Case Number 3`d AmUSR-248 Resource Services/Varra • Companies Chester Planner Julie Please Reply By July 20,2001 Project' 3'"Amendment to a Site Specific Development Plan and Use by Special Review - Permit for a Coal Ash Burial Project. ` Legal Pt. of NW4 of Sect.31,T3N, R67W of the 6th P.M.,Weld County, Colorado. Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049' —. reco m elation reply the above listed date that The application is submitted to you for.review and recommendation. Any comments or recommendation you considergve full to this r to your recommendation. be app we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to hell Dethe Planner ofas Planning ociated with the request.ces. if ou have any further questions regarding the application, please Weld County Planning Commission Hearing(if applicable) August 21, 2001 with our Comprehensive Plan CI . We have reviewed the request and find that it does X We have reviewed the request and find no / not conflicts our inte ests. O See attached letter. Comments: D47 - ate �_l-—�� Signature �v Agency , +Weld County Planning Dept. +1555 N.17th Ave.Greeley,CO.80631 G(970)353-6100 ext.3540 +(970)304-6498 fax RECEIVED *it DEC 0 9 1998 ,• WELD qigigazispr Weld County Referral c• December 8, 1998 . COLORADO • The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3rd AmUSR-248 Resource Services/Varra Companies } - Please Reply By December 29, 1998 Planner Ben Patton Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project • f Legal Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 i F The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further-questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) January 19, 1999 ❑ We have reviewed the request and find that it does/does not comply with our Comprehensive Plan ❑ We have reviewed the request and find no conflicts with our interests. See attached letter. Comments: • • Signature jJi411jjf ra�, „ 1� Date ' ( C't cr Agency Ada:, tj j& Loa 4-Weld County Planning Dept. •:-1400 N. 17th Ave.Greeley, CO.80631 :•(970)353-6100 ext.3540 :•(970) 352-6312 fax MEMORAN'uUM III I 4c. TO: Ben Patton, Planner DATE: January 18; 1999 FROM: Donald Carroll, Engineering Administrator it COLORADO SUBJECT: 3rd AmUSR-248; Colorado Groundwater Resource Services/ Varra Companies The Weld County Public Works Department has reviewed this proposal. This project falls primarily under the purview of the Weld County Use by Special Review Permit. Our requirements are as follows: 1. WCR 13:The Weld County Public.Works Department is requiring the amendment of the Road Maintenance and Improvements Agreement with Varra Companies. The old agreement, dated 1985, shall be updated to reflect current requirements. Attached is the Amended Road Maintenance and Improvements Agreement. • cc: Frank B. Hempen, Jr., P.E., Director of Public Works/County Engineer 3rd AmUSR-248 ' planl7 Memorandum TO: Julie Chester, W.C. Planning wine DATE: August 2, 2001 FROM: Cindi Etchever W. C. Department of COLORADO Public Health and Environment SUBJECT:Varra Coal Ash Pilot Project, Conditions of Approval The Weld County Department of Public Health and Environment has reviewed this application. We recommend for approval of a coal ash disposal pilot project with numerous recommended conditions and standards. We have attempted to simplify our referral by separating the proposed conditions into conditions of approval and development standards. The following are recommended to be conditions of approval: Prior to recording the plat: 1) The applicant shall submit a comprehensive site-specific ground water investigation report to Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment for review and approval. 2) A comprehensive site-specific ground water monitoring plan must be submitted and approved by Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment. At a minimum, the Plan shall address the location and purpose of all monitoring points, monitoring frequency, monitoring parameters, analytical methods, reporting frequencies, etc. 3) The applicant shall provide evidence to the Weld County Department of Public Health and Environment that an appropriate financial assurance mechanism has been established in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). 4) The applicant shall provide evidence that all issues described in the May 23, 2001 letter from the Colorado Division of Minerals and Geology have been addressed. 5) The applicant shall submit a plan for controlling fugitive dust during fly ash placement activities. The plan must be reviewed and approved by the Weld County Department of Public Health and Environment. At a minimum, the plan shall address on-site controls as well as controls that will be implemented during hauling activities. Sheri Lockman August 2, 2001 Page 2 6) If applicable, the-applicant shall obtain an emissions permit from the Air Pollution Control Division of the Colorado Department of Public Health and Environment. The following are recommended development standards: 1) The pilot project will be limited to approximately 400 tons of fly ash that will be placed in a trench measuring 10 feet wide, 100 feet long and 10 feet deep. 2) There shall be a single point of ingress and egress to the disposal site. 3) The construction of the disposal trench shall be supervised by a professional engineer. A construction completion report shall be submitted which shows the • surveyed location of the trench segment that is constructed. The report shall also identify soil profile and evaluate conditions discovered during excavation. 4) All stockpile overburden,soil,and associated materials shall be managed to prevent nuisance conditions. The facility operator shall comply with Soil Conservation District for erosion control, seeding stockpiles,fertilizing, and seedbed preparation. 5) No stockpiling of fly ash shall be allowed on site. All fly ash shall be placed in the trench upon receipt at the facility. 6) The project life shall be determined by the results of field and laboratory data after evaluation by the Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment. 7) The facility shall conduct all monitoring activities as described in. the approved groundwater monitoring plan. 8) Background ground water quality levels should be accounted for when considering action levels. With exception to boron (see below, notes to be placed on plat), the most stringent groundwater standards promulgated under The Basic Standards for Ground Water, Regulation No.41 (5CCR 1002-41),shall be used when determining if a standard is exceeded. If a standard is exceeded at a point of compliance (POC) well and confirmation sampling validates the exceedence, remedial measures shall be implemented. 9) The Weld County Department of Public Health and Environment and the Colorado Department of Public Health and Environment shall have the option of collecting split samples from each ground water monitoring well. • 10) The applicant shall submit all laboratory results to the Colorado Department of Public Health and Environment and Weld County Department of Public Health and Environment within seven (7)days of receipt. If any standard is exceeded,the Weld County Department of Public Health and Environment and Colorado,Department of Public'Health and Environment shall be notified within 48 hours. Sheri Lockman August 2, 2001 Page 3 11) Operation inspection reports of the entire facility shall be made on a quarterly basis for the life of the pilot project. The inspection report shall be signed by a professional engineer. The engineer shall certify the operation is progressing in accordance with all aspects of the approved Special Review Permit and Certificate of Designation. A signed copy of the report shall be submitted to the Colorado Department of Public Health and Environment and Weld County Department of Public Health and Environment. 12) The facility operator shall maintain the following records to be available for Weld County Department.of Pubic Health and Environment and Colorado Department of Public Health and Environment review at any reasonable time: a) quarterly operations inspection reports, b) volume of ash disposed, c) results.of water quality monitoring, d) laboratory results for fly ash analyses. 13) The facility shall be operated in a manner to control fugitive dust and fly ash at all times. All operations shall be conducted in accordance with the approved dust control plan. Additional dust abatement measures shall be implemented at request of the Weld.County Department of Public Health and Environment in the event it is determined that dust is a nuisance condition. 14) The maximum permissible noise level shall not exceed the light industrial limit of 70 dB(A), as measured according to Section 25-12-102, C.R.S. 15) The owner and/or facility operator shall notify representatives of the Colorado Department of Public Health and Environment, Weld County Department of Public Health and Environment, and Department of Planning Services of any proposed oil and gas drilling within the Special Review Permit area. 16) The facility shall comply with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2), the Weld County Code, as amended, and the Rules and Regulations of the Colorado Division of Minerals and Geology. 17) The facility shall maintain evidence that an appropriate financial assurance mechanism has been secured in accordance with The Regulations Pertaining to Solid Waste Disposal Sites and Facilities (6 CCR 1007-2). 18) A metal sign shall be posted at the facility entrance. The sign shall be a minimum of three feet in width and four feet in length. The sign shall state the following: a) name of operator, b) type of project, c) emergency phone numbers of the facility operator. Sheri Lockman - u August 2, 2001 Page 4 We also recommend the following notes be placed on the plat: 1) The placement of coal ash under saturated conditions is not without risk, therefore, • the circumstances which would terminate this project must be clearly defined, understood and agreed to by all parties. In addition, conceptual plans to be implemented if impact to ground water occurs shall be reviewed and approved by Weld County Department of Public Health and Environment and Colorado Department of Public Health and Environment. 2) Varra has requested to use 5.0 mg/I as a standard for boron. Regulation No. 41, The Basic Standards for Ground Waterstates that the applicable standard for boron is 5.0 mg/I where a party can demonstrate that a crop watering use of groundwater is not reasonably expected .A rigorous ground water monitoring program has been established for the pilot project. Additionally, the volume of/boron potentially • generated by the pilot is small. The pilot project meets the general criteria necessary to apply the 5.0 mg/I boron:standard. However, should the pilot project demonstrate the feasibility of disposing of fly ash in a saturated media, reassessment of the boron standard shall be necessary before large-scale disposal operations-begin to protect agricultural-use of the:ground water in the area. O DEPARTMENT OF PUBLIC HEALTH & ENVIRONMENT : 1555 N. 17"' Avenue ' Greeley, CO 80631 WEBSITE: www.co.weld.co.us ADMINISTRATION: (970) 304-6410 FAX: (970) 304-6412 PUBLIC HEALTH EDUCATION & NURSING: (970) 304-6420 O FAX: (970) 304-6416 CO LORADO A ENVIRONMENTAL HEALTH SERVICES: (970) 304-6415 COLORADO FAX: (970) 304-6411 • February 20, 2002 Joby Adams • CGRS, Inc. 1301 Academy Court Fort Collins, Colorado 80525 Subject: Groundwater Investigation Report, Varra Coal Ash Project, 3RD AMUSR— 248, Site Specific GW Investigation Report Approval Letter Dear Mr. Adams: The Weld County Department of Public Health and Environment (WCDPHE) has completed its review of the Groundwater Investigation Report (the Report), dated December 2001, for the Varra Coal Ash Project. The pilot project is located on Varra Companies, Inc., 12910 Weld County Road 13, Longmont, Colorado, at an active gravel quarry in Weld County. The purpose of the report was to determine the actual ground water hydrology and background water quality of the pilot project. • Based on the information provided in the Report, Roger Doaks' letter dated January 15, 2002, your response letter, dated January 16, 2002, and the modified figure 4 that you faxed to our office on January 23, 2002, WCDPHE has determined that the comprehensive site-specific ground water investigation has been adequately address. Please provide a signed hard copy of your January 16, 2002 correspondence on CGRS letterhead and Figure 4 modifications. If you have any questions, please do not hesitate to call me at (970) 304-6415, extension 2220. Sincerely, �� Cindi Etcheverry Environmental Specialist Environmental Health Services cc: Trevor Jiricek,Director, Environmental Health Services Kim Ogle, Department of Planning Services Chris Vana, Varra Companies Roger Doak, Colorado Department of Public Health and Environment O:1ETCHIWASTENarra\020602gw investigation report.aoc • Kit Weld County Piannird County Referral "lige DEC 2 9 1998 December 8, 1998 COLORADO ' ® The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3rd AmUSR-248 f Resource Services/Varra Companies Pledse Reply By Deceinbe629j 1998 Planner Ben Patton Y • Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. Legal Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, F Colorado. } Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 — .__... • The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further.questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) January 19, 1999 ❑ We have reviewed the request and find that it does/does not comply with our Comprehensive Plan ❑ We have reviewed the request and find no conflicts with our interests. • l3 See attached letter. Comments: • • Signature "gm Date /,t/2e9r Agency +Weld County Planning Dept. +1400 N. 17th Ave.Greeley,CO.80631 :•(970)353-6100 ext.3540 +(970)352-6312 fax 'C.1 ice' Longmont Soil Conservation District 9595 Nelson Road, Box D-Longmont, CO.80501 -(303)776-4034 December 24, 1998 TO: Weld County Planning Dept. 1400 N. 17th Ave.. . Greeley, CO 80631 FROM: Longmont Soil Conservation District RE: Varra Companies 3rd AmUSR-248 ` LOCATION In. section31 of 3N-67W. This is in the gravel mines just south of Rademacher Farms headquarters. COMMENTS This a project to research the adverse liabilities of coal ash burial in saturated gravel pits . The project will last for 3 months. During the project time they will bury coal ash and evaluate any impacts that this may have on the surrounding ground water. CONCERNS Our concern is that should there be unanticipated adverse effects to the ground water that they may not be able to adequately clean up the site if the experiment fails_ Thank you for the opportunity to comment. CONSERVATION - DEVELOPMENT - SELF-GOVERNMENT *se . _ a • Weld County Planning Dept. DEC 18 1998Weld County Referral O +- Vita December 8, 1998 • COLORADO The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3rd AmUSR-248 • Resource Services/Varra Companies Please Reply By December'29, 1998 Planner Ben Patton l, Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. Legal Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. ' • Location Approximately 1 mile north of WCR 26;approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so.that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further questions regarding the application, please call the Planner associated with the request. • Weld County Planning Commission Hearing (if applicable) January 19, 1999 ❑ We have reviewed the request and find that it does/does not comply with our Comprehensive Plan 917Ve have reviewed the request and find no conflicts with our interests. f ee;attached letter. Comments: Signature C �� • QC 1 Date , k.o_so') Agency k . (ew : re_ Wtr-.* • •-Weld County Planning Dept. +1400 N. 17th Ave.Greeley, CO.80631 T(970)353-6100 ext.3540 +(970)352-6312 fax MouNr°y `nnOUNTAIN VIEW FIRE PRO JTION DISTRICT F , @ Administrative Office: 9119 County Line Road•Longmont, CO 80501 v. (303) 772-0710 Metro (303)666-4404 FAX (303)651-7702 NEW • • December 16, 1998 • Mr. Ben Patton Weld County Planning Department 1400 North 17th Avenue Greeley, CO 80631 . Dear Mr. Patton: • I have reviewed the submitted material pertaining to Use by Special Review for a Coal Ash Burial Project to be located at 12910 Weld County Road 13 (Case Number: 3`s AmUSR-248). The property named is within the boundaries of the Mountain View Fire Protection District and receives service from the District. The Fire District does not object to the request and find no conflicts with our interests. We appreciate being involved in the planning process. Should you have any questions, please contact me at(303)772-0710. Sincerely, . - Cg)---CS LuAnn Penfold • Fire Marshal. LMP/lp cc: Roger Vigil,Weld County Building Department, 1400 N. 17th Avenue, Greeley, 80631 project file file • 102.16.98 • • Station 1 Station 2 Station 3. Station 4 Station 5 Station 6 Station 7 9119 Cnty Line Rd. 10971 WCR 13 P.O.Box 575 P.O.Box 11 10911 Dobbin Run P.O.Box 666 P.O.Box 40 Longmont.CO Longmont,CO 299 Palmer Ave. 8500 Nlwot Road Lafayette,CO 600 Briggs 100 So.Forest St. 8O501 80504 Mead,CO 60542 Niarot,CO 80544 80026 Erie.CO 80516 Dacono,CO 80514 STATE OF COLORADO COLORADO GEOLOGICAL SURVEY • Governors Department of Natural Resources - Governor 1313 Sherman Street, Room 115 Denver,Colorado 80203 Greg Nalcher Phone (303) 866-2611 • Executive Director FAX(303)866-2461 Vicki Cowart Slate Geologist and Director DEPARTMENT OF NATURAL RESOURCES Mr. Ben Patton WE-99-0028 Weld County Department of Weld County Planning Dept. Planning Services 1400 N. 17th Ave. Greeley, CO 80631 FEB' 10 1999 Jan. 22,1999 1 I .. Dear Mr. Patton: Re: Use by Special Review, Coal Ash Burial Project-3rd Am usr-248 We have reviewed the materials submitted in support of this request as well as the general and engineering geology of the site. The site was visited in the field to confirm • the general conditions on Jan. 4,1999. There are no constraints at this site of a purely geological or engineering nature which would preclude the proposal but there are several hydrological and water quality impacts which should be addressed in greater detail. The appropriate review entity in these cases is not us but I feel it is worth reiterating these issues just to assure that they are all identified and dealt with. • • The major potential problems associated with this proposal are the adverse impacts on water quality, and the disturbance of the hydrologic properties of the alluvial materials that make up the valley bottom in the area. The monitoring program proposed seems much to short to,demonstrate the presence or absence of any water quality degradation resulting from dissolution of mineral contaminants in the ash. We would suggest that this time frame be extended based on some determination of the chemical reactions and their kinetics to predict how and when any desorption and/or dissolution might occur. The appropriate point of contact and review of this evaluation would be the Colorado Dept. of Public Health and.Environment (CDPHE). • The second issue relates to the possibility that placing this material in a trench in the gravel deposit will produce a very significantly different zone of hydrologic properties that could alter the groundwater flow and behavior. The scale of this test may not be STATE OF IDLORADO Bill Owens,Governor cor.� Jane E.Norton,Executive Director ��F; o� Dedicated to protecting and improving the health and environment of the people of Colorado I N 4300 Cherry Creek Dr.S. Laboratory and Radiation Services Division * Denver,Colorado 80246-1530 8100 Lowry Blvd. • Phone(303)692-2000 Denver,Colorado 80230-6928 lg76' TDD Line(303)691-7700 (303)692-3090 Colorado Department Located in Glendale,Colorado of Public Health http://www.cdphe.state.co.us and Environment, January 14, 2002 ItEicv Mr. Christopher Varra j v Varna Companies, Inc _u12910 Weld County Road 13 JA / 1 ffi Longmont, CO 80504 Ellfri Oran, yE4llq��y/C t And - c/o Colorado Groundwater Resources Services Mr. Joby Adams P.O.Box 1489 Fort Collins, CO 80524 RE: Approval of Financial Assurance for Varra Companies, Inc. SW/WLD/VAR/1.3 Dear Misers Varra and Adams: The Department has reviewed the Letter of Credit wording for Varra Companies, Inc. and found it to be in compliance with the solid waste regulations. The Department hereby approves your 2001 financial assurance submittal. If the Pilot Project continues for over a year, an inflation adjustment of the closure costs will be required on or before 12/5/2002 per Section 1.8.3(C ). Establishment of a Standby Trust Fund will not be required. If you have any questions regarding this letter or financial assurance,please contact me at (303) 692-3350. Sincerely, Mira Neumiller Program Specialist Compliance Program Enclosure cc: revoz&icgk,WCHD Weld County Planning Roger Doak, CDPHE c:/word/swfa/02swfacorr,pl STATE OF COLORADO Bill Owens,Governor �p•CO Jane E.Norton,Executive Director 7, Dedicated to protecting and improving the health and environment of people of Colorado y cama. of i V I 4300 Cherry Creek Dr.S. Laboratory and Radiation Services Division �\+} ..,.'x*J * Denver,Colorado 80246-1530 8100 Lowry Blvd. 1876 Phone(303)692-2000 Denver,Colorado 80230-6928 TDD Line(303)691-7700 (303)692-3090 +/'t E'j\J E D Colorado Department Located in Glendale,Colorado ' 'l� of Public Health http://www.cdphe.state.co.us APR 9 5 2001 and Environment • January 31,2001 ENVIRONMENTAL HEALTH SERVICES Weld County Board of Commissioners 915 101h Street - Greeley, CO 80631 RE Application For Certificate of Designation'-4Va„nra C ai.'Ass—.Pilott o ec Dear Commissioners: The Hazardous Materials and Waste Management Division of the Colorado Department of Public Health and Environment(the Division)has completed its review of Varra Companies'application for a Certificate of Designation to conduct a pilot project in Weld County: The.proposed study area is located at a former gravel quarry near 12910 Weld County Road 13,which is. approximately four miles north of Firestone. The pilot project will provide a research opportunity to evaluate coal ash in a wet environment A Certificate of Designation is being requested for disposal of approximately 400 tons of fly ash that will be placed in a trench measuring 10 feet wide, 100 feet long and 10 feet deep. The fly ash will be placed so that the water table intersects the ash. It is the assessment of the Division that the proposed pilot project can comply with the technical, environmental and public health standards of the Act(30-20-100 et seq.)and Regulations.(6 CCR 1007-2);if the project is.operated and monitored as detailed in the submitted;plan and with the requirements of the Division,as detailed in the attachment. Based on this assessment,the Division recommends that this proposed pilot project may be approved by the County based on these and local criteria. If approval is granted,the list of conditions shall be incorporated in the resolution granting such approval. Please provide the Division with a copy of the County resolution for approval or denial of the application for a Certificate of Designation. Should you have any questions concerning this matter,please contact Roger Doak at 303-69?-3437. : 1:ak, ist incere G nn F.Mallory' i` � Solid Waste Unit olid Waste Unit, Leader k Compliance Program Compliance Program Attachment . Cc: Julie Chester,Weld County Dept.of Planning Services,w/att Trevor Jiricek,Weld County Dept.of Public Health and Environment,w/att Joby Adams,CGRS,w/att Harry Posey, DMG,w/att Chris Varra,Varra Companies,w/att George Moravec,WQCD,w/att Sw/wld/var 2.1 • N. Attachment Weld County Board of Commissioners January 31, 2001 Conditions of Approval Varra Companies—FlyAsh Pilot Project • • Weld County 1. A comprehensive site-specific ground water investigation must be completed and approved prior to placement of fly ash in the trench. The investigation shall include, at a minimum: (1) the installation of an adequate number of ground water monitoring wells to characterize ground water flow rate, ground water flow direction including seasonal fluctuations in ground water flow;(2)a detailed description of materials comprising the uppermost aquifer including the lithology, thickness, hydraulic conductivity, porosity and effective porosity; and (3)an evaluation of local ground water quality—analytical parameters must be identical to those from the column test. The findings from the site investigation must be submitted to Weld County and the Division for review and approval. 2. Weld County and the Division shall have the option of collecting split samples from each ground water monitoring well. 3. A one-year monitoring period has been proposed for this project. We believe the length of the project should be determined by the results of field data.A one—year period should be a- minimum time frame. 4. During the field investigation period,Varra shall submit laboratory results to the Division and Weld•County within seven (7)days of receipt. If a standard is exceeded, the Division and Weld County shall be notified within 48 hours. 5. The placement of coal ash under saturated conditions is not without risk, therefore, the circumstances which would terminate this project must be clearly defined, understood and agreed to by all parties. In addition, conceptual plans to be implemented if impact to ground water occurs shalrbe provided. • 6. Background ground water quality levels should be accounted for when considering action levels. Ground water quality standards promulgated under Regulation#41, 5CCR 1002-41 shall be used when a constituent does not have an established MCL. If a standard is exceeded at'a point of compliance (POC)well and confirmation sampling validates the exceedance, remedial measures shall be implemented. 7. Action level wells must be installed between the disposal trench and POC wells. POC wells shall be established approximately 50 feet downgradient from the trench. 8. Financial Assurance must be established prior to acceptance of fly ash. Third party cost estimates (closure activities and post-closure monitoring)and the financial instrument must be submitted to Weld County and the Division for review and approval. It is the opinion of the Division that the trust fund option under Section 1.8 of the Regulations is not an appropriate financial mechanism for a pilot project. • 9. Varra has,requested to use 5.0 mg/I as a standard for boron. Regulations 41, the Basic Standards.for Ground Water states that the applicable standard for boron is 5.0 mg/I where a party can demonstrate that a crop watering use of groundwater is not reasonably expected. Varra has affirmed that there is no crop watering use of ground water at the pilot site. • Additionally, the volume of boron potentially generated by the pilot is small. A rigorous ground water monitoring program has been established for the pilot project. The pilot project • meets the general criteria necessary to apply the 5.0 mg/I boron standard. However, should the pilot project demonstrate the feasibility of disposing of fly ash in a saturated media, a re- assessment of the boron standard shall be necessary before large-scale disposal operations begin to protect agricultural use of the ground water in the area. • STATE OF COLORADO DIVISION of MINERALS AND GEOLOGY • Department of Natural Resources 1313 Sherman St., Room 215 Weld County Planning Dent Denver,Colorado 80203 Phone:(303)866-3567 FAX:(303)832.8106 _ DEC 2 8 Egg DEPARTMENT OF NATURAL December 23, 1998L, RESOURCES Roy Romer Mr. Christopher L. Varra Governor Varra Companies Inc. lames S.Lochhead 2130 S 96ih St Executive Director Broomfield, CO 80020 Michael B.Long Division Director RE: Varra Companies,Pit No. 1,Weld County, MLRB Permit No.M-74-052; USR Permit 248; CGRS no. 1-135-2755 Dear Mr. Varra, - The Weld County Planning Department has invited DMG.to review and comment on the following application: "Amendment to a Site Specific Development Plan and Use by Special Review Permit for a.Coal Ash Burial Project." CGRS Inc. submitted this application on your behalf for the captioned operation. • By way of background,this Division has been generally apprised of Varra Companies' proposal • to dispose of coal power plant fly ash in Pit No. 1, which is in the NW/4 Section 31,T3N,R67W. We have discussed part of the proposal with your consultant CGRS,the Solid Waste Disposal • unit of CDPHE, and the Weld County Planning Department. The invitation to review the application to Weld County apparently follows from those previous discussions. • The Division respectfully does not wish to comment on your application to the Weld County Planning Department, as their County land use authority is separate and distinct from this . Division's obligations under the Mined Land Reclamation Act. Please know that while this letter does not constitute a review of the Application to Weld County,neither does it supplant the possible need for reclamation plan revisions or amendments to be filed with this Division. We would anticipate that,except perhaps as described below,you might need to revise your permit with this Division to allow for disposal and field testing of the fly ash. As implementing agency for groundwater regulations at mining sites,this Division may also require certain leach testing of the fly ash.and/or groundwater monitoring at the site. In an earlier meeting with Weld County and CDPHE, Glenn Mallory of the HMWMD indicated that DMG's groundwater authority, as it may relate to fly ash disposal at this site only, might be accepted by the HMWMD. As a classified solid waste, fly ash is regulated by the HMWMD. If the HMWMD elects to cover that part of your Pit No. I MLRB permit, then DMG would anticipate a request from you to amend the permit to remove the appropriate acreage from the . permit and return some portion of the reclamation bond. At last contact Mr.Mallory had not yet determined whether to accept such responsibility so, until HMWMD elects otherwise, DMG ` would continue to exercise groundwater implementation authority at this site. • r I would be pleased to discuss possible testing and/or monitoring relative to the fly ash disposal,or you may wish to contact Mr. Carl Mount at this office. Meanwhile, we look forward to working with you on this project and will do what we can to assist in any way we can. Sincerely, We� frp Harry H.Posey CC: Carl Mount, DMG Bruce Humphries,DMG Jim Pendleton, DMG .Ben Patton • Weld County Planning Dept- 1400 N. 17th Ave. 'Greeley,CO 80631 Glenn Mallory • CDPHE—HMWMD 4300 Cherry Creek Drive South Denver, CO 80246-1530 • Jobey Adams CGRS Inc. P.O. Box 1489 Fort Collins,CO 80522 • m:Unin\hhp\Vacra fly ash STATE OF COLORADO OFFICE OF THE STATE ENGINEER o co,_ o Division of Water Resources � r°k�, Department of Natural Resources - • !AC' 1313 Sherman Street,Room 818 �� Denver,Colorado 80203 *ins__ Phone(303)866-3581 . FAX(303)866-3589 Roy Romer Governor December 11, 1998 James S.Lochhead Executive Director Weld County Planning Dept. HalStat D Engineer Mr. Ben Patton DEC 1 5 1998 Weld County Planning Dept. 1400 N. 17t° Ave. • Greeley, CO 80631 RE: Permit for Coal Ash Burial Project, 3rd AmUsr-248 Dear Mr. Patton: Pursuant to the State Engineer's August 7, 1995 memorandum to county planning directors, this office is no longer providing comments on land-use actions that do not involve the subdivision of land as defined in Section.30-28-101(10)(a), C.R.S. This referral.does not appear to qualify as a "subdivision."' Returned herewith are the materials submitted to this office in the above referenced matter. If you have any questions in this matter, please contact this office. Sincerely, Heidi Frey Water Resource Engineer Enclosures cc: Richard Stenzel, Division Engineer /subd-Itr.mrg z I --- 1 1, i' 1% t .0 EXH'`l1IT' BB - - STATE OF COLORADO `! .\1 .e,,._ llchard D,.Lamm,Governor '(:,r p;-5,!%:.1:, 1 ;DEPARTMENT OF NATURAL RESOURCES r , �,''O��O k ': DIVISION OF WILDLIFE a T = Jack R. Grleb,.Dlrector - � " t sKw y •'.5060 Broadway - , tre 110 0 ' Denver, Colorado 80216.(82192` Dick Allen :. March iF 1980 ' Varra;Fnterprisea . y;:,' 750 Boston ri • . Longmont; CO. 86521. .. ' • ,L :; tl�` d=. • Al Dear "Sirs F+ I,received and.reviewed the proposal for your gravel operation located north-east , - • qty. .-of:the:SaintVrain:.River and Weld Count R'oad,:#13. . I am Writing concernin the b' '.t Y K g n .. .... ..,,, ' wildlife values and-possible conflicts that can be' antics ated with `?'1"P P your project:, :i•: To begin with, rare or endangered •species ,present,',a primary:.concern;where land -:i, I change :projects* are concerned. The only 'such specie that 'is likely to be present -, ^-. here .would be an occasional bald eagle Occasional stop-overs by eagles utilising : y the river area would,most likely occur during •winter migrations: • ' • I --161;:te. Other wildlife which could be expected to* utilir,e this 'area 'would include: . Mammals - u .!_'.; birds. � : �"'" • . -mule deer*_ golden eagle's.. . �'=•. E'`; c .: • "'jackrabbits' • bald eagles*•• r.`':;. . cotton-tailed 'rabbit various owls; hawks, and falcons* • r .red fox: Canadian geese - � `coyote • .--ring-necked pheasants : ': jF ,:..,skunks . various waterfowl sp.* .,:, �=: rt ' various song and 'non_game birds* y Vari ous 'aquatic -vildlife(fish, amphibians, • reptiles and insects) are located in ',.: '. ? ' : .the existi-ng penis 'and in-the river. - : • *.Note andioates seasonal or sporadic presence.: tt :. r'• f'^;'' ,., Considering/the .above wi.ldlifa, ' confl iota•gan he minimized or: avoided in several - ways. Short-term conflicts Can.be limited by running maximum operations during- • , '.:;. �;`; periods when wildlife utilization is .losr: 'Peak use and need.periods: would indlude' • the nesting and breeding periods (May June .f or most species) and migration •�> ';: periods- for the seasonal•visitOrs(generally October-December and'.Nareh-May), ''',.fl:Al Times_ of;primary concern would be the fall?migration and breeding-nesting per.iodscL _:•. ; •` ? • Long'.term;conflicts are. Of:major may shift to surrounding ort•.'-‘:ti:'.j : alternate.:areas *during ,operation peyiods:•'If the`resultant_pronerty.is rehabil itated-properly most. wildlife-will return:. • 1 To support the maximum variety of' wildlife;-avariety of habitat types is essential4i ,' :a • • • •. . Each specie has it's .own requirements and most prefer the ^edge" effect formed ' :=a '� where several habitat types converge. Thus planting a variety of plant types and _:4 { (cony ) DEPARTMENT OF NATURAL RESOURCES,Harris Sherman,Executive Director • WILDLIFE COMMISSION, Vernon C Williams, Chairman;. ' `. &1? Thomas Farley. Vice Chairman • Sam Caudill, Secretary••• Roger " ''s•- >i Jean K. Tool,Member • Ro er Clark;Member 'I=:r,.:'': ; ::F'?;.±';: ' ` STATE OF COLORADO _•\ / • \ ! - G • ••Richard D.Lamm, overnor .�-•! �/ ' DEPARTMENT 'Pk-NATURAL RESOURCES.".t: • '..4,,,-c Otof�o - :}i,j`.. V., .. DIVISION OF WILDLIFE - . . �b] \ = + d r Jack R. Orieb, Director - - ? ' r C • 6060 Broadway • Nd'lgill •; j. -r.. OF W' : ' . .:gt: Denver, Colorado e0216'(e26-1192) "' ..i�'•' y d...'I..' :.,i:::. Y.. . . page. 2 (cont. ) •••":34.- : 'arrangements can create an• overall habitat which is compatible for a number_of "" '.' . •species. • In summary, this projects conflicts with rare• or endangered species (bald:eagles):- ' should be` minimal and'is:not expected to'be avoidable. In this case the conflicts "• :• ' >" i 4, ' with the more Common Wildlife Is :of more concern; with the proper rehabilitation .i :%:„," of the property being of utmost.importance.. .. If I can be of any'assistance in '5 ? : `•?:``'' planning this rehab. feel•-free to contact.me•. 'r i- • '.py-�'1. Sincerely, =. fr..k.k. • • . . "Ronald R•.•0ehlkers district iTildlife" manager ''''i•' Longmont south 1 Cambridge Dr. ,Rxr 9' 1 Longmont, CO' . 80501 • . ,1 7 j! • . . . 'P • 3°? 24 . • .. I .. ...':{ ;. ll DEPARTMENT OF NATURAL RESOURCES,Harris Sherman,Executive Director • WILDLIFE COMMISSION, Vernon C. Williams,Chairmen - ' Thomas Farley,Vice Chairman • Sam Caudill,Secretary • Jean K. Tool,Member • Roger Clark,Member ' Jay K.Childress.Member r Dean Hull.Member • Dean Sortde.Mernhnr - - ; £L.}T OF �� ,. \� DEPARTMENT OF THE ARMY 7.z` CORPS OF ENGINEERS, OMAHA DISTRICT A/--�_ „ DENVER REGULATORY OFFICE, 9307 S. PLATTE CANYON ROAD G " ')i4O to LITTLETON, COLORADO 80128-6901 • srArrs Weld County Planning Dept. July 20,2001 P Ms.Julie Chester Weld County Colorado L UL o ti 2001 Weld County Planning Department 1555 N. 17th Avenue• RECEIVEDGreeley,CO 80631 RE:, Colorado Groundwater Resource Services/Varra Companies—Case No.3r°AmUSR-248 Corps File No.200180507 Dear Ms. Chester: Reference is made to the above-mentioned project located in the NW 'A of Section 31,Township 3 North,Range 67 West,Weld County, Colorado. If any work associated with this project requires the placement of dredged or fill material, and any excavation associated with a dredged or fill project, either temporary or permanent, in waters of the United States at this site, this office should be notified by a proponent of the project for proper Department of the Army permits or changes in permit requirements pursuant to Section 404 of the Clean Water Act. Waters of the U.S. includes ephemeral,intermittent and perennial streams their surface - connected wetlands and adjacent wetlands and certain lakes,ponds, drainage ditches and irrigation ditches that have a nexus to interstate commerce. Work in waters of the U.S. should be shown on a map with a list identifying the Quarter Section, Township,Range and County, and Latitude and Longitude to seconds or the UTM coordinates of each • area of work. If there are any questions concerning this matter please call Mr:Terry McKee of this office at 303-979-4120 and reference Corps File No.200180507. Sincerely, • Ti thy T. e Chie , r Re Office me • v �z 6� , 7�itij 3tt ti r r ' DFC x19 sue 9817 WeldI �� County Referral ,��Y IllikDecember 8, 1998 COLORADO. The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater • Case Number 3rd AmUSR-248 Resource Services/Varra Companies Please Reply By December 29, 1998 Planner Ben Patton Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. • Legal Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, • Colorado. Location Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209 31 000049 The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may - give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) January 19, 1999 ❑ We have reviewed the request and find that it does Idoes.not comply with our Comprehensive Plan ❑ We have reviewed the request and find no conflicts with our interests. I See attached letter. Comments: Signature ;� M Kee.... Date be, ft c v Agency Ceti* pr ENGINEE61S +Weld County Planning Dept. +1400 N.17th Ave.Greeley,CO.80631 +(970)353-6100 ext.3540 4-(970) 352-6312 fax sylT op. • \beiPARTMENT OF THE ARMY --1 Qc ��[� CORPS OF ENGINEERS. OMAHA DISTRICT TRI-LAKES PROJECT OFFICE,9307 STATE HWY 1 2 W `"-�x� H LITTLETON, COLORADO 80128-8901 vv County Planning Dept. cry o REPLY TO :tin- u� December 15 1998 DEC 21 1998 S ATTENTION OF: Mr. Ben Patton C I nAng Weld County Planning Department 1400 N. 17th Ave. Greeley, Colorado 80631 RE: 3r° Amendment to a Site Specific Development Plan, Corps File No. 199880984 Dear Mr. Patton: Reference is made to a 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. This project is located in'the Northwest Quarter of Section 31, Township 3 North, Range 67 West, Weld County, Colorado. If any work associated with this project requires the placement of dredged-or fill material, and any excavation associated with a dredged or fill project, either temporary or permanent, in streams or wetlands at this location, this office should be contacted by a proponent of the project for proper Department of the Army permits or.changes in permit requirements pursuant to Section 404 of the Clean Water Act. If there are any questions concerning this matter, contact Mr..Terry McKee of this office at 303-9794120 and reference Corps file No. 199880984. Sincerely, Timlthy T. C: ey Operate u M• I. ch K. Weld County, Colorado wysiwyg://0/http://maps.merrick.com/website/weld/MapFrame.htm Weld County, Colorado IP ' tit lir • m . c•"' - _ -- r .tri I I - 1 r" t em 1 Legend j„y i,. SITE LOCATION I. i i• J 0 County Border __, __, f ri Parcels 5----- �,-4-� Jr�- Qt . Section Grid �y t , ,r Phony ,, rr } 1 r a}r , '" / r` L :x r A se �e 1 et i . i IMI II -' a 1 tar ..: - Mil s ki I _ • 6 ounty,- •ice —� LEINIIII �.� f_ �. ''e` �' ti�_ -;00i_Uft 120931000049 VARRA SAND & GRAVEL INC eta] Taxes: $2,932.48 VARRA COMPANIES INC mount Due: $0.00 BROOMFIELD, CO 80038-2049 1 of 1 07/09/2001 9:48 AM 3rd AmUSR 248 - Varra I • en A rl . lk so Ar_ O � , r :_ ac %, k . - NA.. : .1 i , .,. , Ai 0 S :I\ �. c ! Y �s et i \I\ ..-- . :..rter - - 410 ..- i",..• ii 0 0 4....e r 01* if rte` r Hey, te Weld County Road 26 S a N 3rd AmUSR- 248 Colorado Groundwater Resource ServicesNarra Vicinity Map . .s 44 , �,t y . ,. .._ , rrmAim . . 28 60 25 30 28 ;Ith i , 29AM 26 25 g rf } • I j • r, 34 . 36?It Ilitjatallittilmilli3 1 ll s ahIur .ptiiPJ 10 71 12 WI • 17 15 I% UI 16 , 15 14 13 \ IIIP lia INI . i In CIL SW a -20Ea I I 111111111 • ` �}�tG , • - I 20 ` 21 22 23 24 li . ih.. I il Mir si In 1 Site ! i 27 26 25 .. „ !aU ° �srs� IF",2 a 35 33 34 33 34 35 36 ir r:1 s . . 1 � •r `d A - 4 . - • unquvri R • : d �► � ► • � ` a 3 . ER mill 3 2 1 a r,,i • (..., / " r94 . , 8 9 10 11 10 11 elf • CD 40 Ilk Nu .12 1 , •.., 16. i ` 11l, i /6 1� INN �� 16 15 14 15 14 13 L. .b Amil .• 1 21 22 23 22 23 2�{ r lin ii. _ _____ , I / w , - E SThis product has boon developed solely for internal use coy by Weld County.The OIS database and data in the product is salad to constant change and the accuracy and contemns cannot bat and b not guaranteed. The destgna%on Blots or parcels ar lend uses S nt.data base don not imply bat N•lots or paresis we leggy created or that lie land was comply a applicable Slab or Local law. UNDER NO CIRCUMSTANCE SHALL THE PRODUCT BE USED FOR FINAL DESIGN PURPOSES. WELD COUNTY WES NO WARRANTER OR GUARANTEES, EITHER EXPRESSED OR IMPUED AS TO THE COMPLETENESS,ACCURACY.OR Road Extents CORRECTNESS OF SUCH PRODUCT,NOR ACCEPTS ANY LIABLITY,AMMO FROM ANY INCORRECT. INCOMPLETE OR MISLEADNO INFORMATION CONTAINED Text Section THEREIN. No pad d the product may be copied.reproduced or trans ltsd in swim or by way mans whatsoever,inducing,but not limited to.electronic.mechanical, reandlog, Town / Range Grid scanning,nany ot information r al system or n�ppne.d purpose est ei.span y. Creeks/ Streams/ Intermittent Illi Lakes / Rivers GIS Sections County Boundary • • �� 'k, 1 �) 5 - l0 % 0 - - ems=_ -_<�' _ =- ---___790_,.......:.....,_,.. , -f l I STUDY AREA I 1%/ Y<R9.1 I1, y c..„...4,........„...,.. ` .. ...... 4 TB9S INiI : ‘77 Y EXHIBIT O }) �`- (� Vi r. .i i `. _. ' COAL ASH TRENCH AND MONITORING 5: t, / j i .y ves WELL LOCATION PLAN I �j. ` Ii J .1 Jr.,6.6 -- _ k ii ¶e 1 "t _. ,o, E,s /,", -F et?„LE �Y�, p _ : `1. '-. EXHIBITS �� , {11. R )• i( - INDEX MAP 1� « i r • 'l�.:. 1 iQ - • v v•ne j : FIGURES �v -1141,1"-Z7,481' V .1, -.� n ' - f AREAARR USE ACO LA CONDITION MAP WELD COALY PROJECT I U' .,-;-:1-1":7-13,•;.!'" -7 ry�� ry 1 ,,K t+ WELD COUNTY,COLORADO ---J1.f"gyp EO'..iIOY:C •:(5' 1 v,/ V Se�v(r;e5ll� EXHIBIT C LEGEND: TOPOGRAPHIC MAP APPLICANT: ORwRosso ToRw VARRA COMPANIES yam 12910 WELD COUNTY ROAD 19 au LONGMONT,COLORADO 80504 4'°" ro,E7 ce hR AFTER: NELSON ENGINEERS 640 GREELEY NATIONAL PLAZA GREELEY,COLORADO 80631 PHONE 356-6362 • • WELD COUNTY SPECIAL REVIEW-AMENDMENT AREA ADDENDUM TO USR 248-REVISED VICINITY MAP S, NOVEMBER 11,1998 ' 6 soy t20 • U `P • 1 NAMES OF OWNERS OR PROPERTY WITHIN 500 FEET NAME ADDRESS,TOWWCITY. ASSESSOR'S STATE AND ZIP CODE PARCEL - CEV IDENTIFICATION c5M5 Sec.30 Township 3 Nat N Pao 8115195 I.fill)P.M. • Rademacher,Lows J,0 Ernes J. 13104 Weld Coady Row 13 120030000X0 • lammml CO 80b1 C ) 0. Rtlemxdp FMme LTC llpduy 13104 Weld County Road 13 120930000035 • 104300400.16'50 C6 lmpmml CO 85`501 moan. CT-13 Avte.G36e1P. 7541WhOCemy0.262950 1209]0004[09 1pipsaw lmemml,CO 85509 Sec.20,TwmaN73 X[04 Rm5eb]Weat 6NPM. .SG4.005.I P. ]541 Weld Calmly Road 26 y 1120920000025 1ppmml,CO 80501 Sec 32,Twnaryp 3?bit Range 6]W eel 6NPM. 4� �• t .'n...T•• iSE.OLWIP_ ]001 Wtle CambRmd 281• 120935000029 art:';- •••••s >au�ern r . '\ I Longmont CO 40531 f _ _ CO) mate.Joseph T.A,6 NGN P. 7095 WOO CpRy ROM M% 120932000328 l• . t.CO 80501 La cassava a 1 ,) `E% Oa, ® ?-"'-` � .. j Open Oros. Co. 5550 n 1NI0IMW33] Nat L y,.5M OO0080oz I ® s �I,. �� 9 / Xelaw.R•4m10. lomlmml,L000301 1208]A0.Y]3 51 ��i//��{ 04950,00040. 1.50,Rerge 6l II1561n P.M. ..15, �„f----Tv. [�W •�•// ��• / / NNam,Wdd E.6Le Wpm 11555 Web Cw.NYReM 15 120031004026 p,_ -�� / Longmont.06 eo5w Yam GadeerMr,Inc. 2130 South Wtn 54.51 120131000040 .`Llt Y•y OrmnRetq CO 96@0. 120931000051 15 drm.PMWele6Jaz0mRn N. 2130$uNco 5021 120931050054 Ljej 'r�'4 �m f ' kwe },/ _ / B,canfNe co 09020 1200]f00.ne v A '�',s��",,,y '� / SL Van 5add5m District 515 moral 842L own 1209310000055 v. ••r_ � �� Sx6]wm5hi 2Na'N a weel6N LenomorPM CO 60501 ,na / OYOq RtlnN A.6 Wda A�p61 6254 Weld County Roue 26 iNlos'N0050 K1c�ir .e'� am• 1 . ' 0400WlLongmandwnty iced s 8\ .. N...._„...----... .� ro rrnq au Frq¢6,Jartm 5A6Ctlm2L 6400 Weld Carry Noadffi 1]1105050024 -. m.e�L.- �.-....1 .} eMM5u&Ns a / Longmont CO 8GA•4 n swat.lTNma NIM 6555 WOO Ccnly Rood M 131106000055 57.NRA14 CAM( ® ANIraa98 1i / LMgmw,w 84504 0+ / CMtaWald[cooly Wolor GNw} 22352nd Avenue 13/106054 1 CO 40031 11843 LNee.JamNer M. 11043 wed Covey Rte 15 131106080052m CED LonnmI CO 000 60304 pWPEsRwFnM Sat.E.TwmaJamas& inRty Went 56NPM. 0,040 M-wRm(YuawR.IC. "...missy Edward nw 6JOFny I`Se3 Wald COn80504 113110900-020 uwiMnMyr nrpmmlw 504 Sec.25•TewniNp 3Nwb gaga rawest oh P.M. �rf.{Ire • Reetaaa,Lade l&Naas war 601Mad 13 .I 120]2500002nms..„...70 - - J.,TM4we I lertnwttw 50501 ••y},�+�� ® Sec.38,Tdmnlup d Not.Pang,65 Wet.6N RN • 9 / Orke Energy Paid 5w[es.Ire. P.O.Box 1542Houst 120]]60WBD 13084 154 T]251 EAW Wa-020 R6M LAM,Co. 13184WtldO040 ROM 13 1207360WJ29 00.0 0404„n1 I1\ ,,s Longmont CO 65,01 CpuowE5.at. - I(1 J.`}/ 5 Jeri!.Inc. Eva9meS CO 400]9 o Road 1.20735000028 e e w[M WPM,IoW 24 /"�/ � / ^ e • v� I • e• -.../ VICINITY MAP VARRA COAL ASH PROJECT LEGEND: 6 / e ® WELD COUNTY.COLORADO al room. PRwmam . / / (..„,„..,..,,,.,n,,,, -- Coumv roam / / APPLICANT; / VARRA COMPANIES 3 12910 WELD COUNTY ROAD 13 LONGMONT,COLORADO 80504 v`pp r 'EXHI-BIT HH '11' ti �J�� Reception No., L •Is��a�2 MARY ANI RSTEIN ' Recorder. a� •+ Recorder's Stamp r • Tins DEED, Made this G - sayer July . J 1978 ,between PASQUALE VARRA and JACQUELINE .VARRA, \ • 4 V • • l 1 lit v of the county of : Weld - ' and Stateof. - • . ,t3 ,,:f Colorado,of the first part,and . VARRA SAND AND. GRAVEL,1 ?' INCINC5 ..f'rt-2`.'-. .. is l.r•t—t t`.':.. • . .".. i:.. .' 'psi •�`��,•�,� .: , a , - , - ,:,,„L...; c .. a corporation i:. ,i _Lca, i • organized and existing ,under and by Virtue of; the laws f the•State of. .t 'r Colorado , ,`q•,,gftheoecondpart;whoselegaladdreesis - 2130` SY. 96th Street, Broomfield, Colorado 60020 If 1..0 WITNESSETH•That the said parties of the first part,for end in consideration of the sum of NO I,Ho r ' CONSIDERATION DOI rARS, `•"• v''• to the said part le Sot the first part in band paid by the said party of the second part,the receipt whereof is hereby , .., . confessed and acknowledged,ha ye remised,released,sold,conveyed aiiid QUIT CLAIMED,and by these presents. remise, release, sell, convey and QUIT CLAIM unto the said party•of the second pert• , its successors and i •weo - assigns forever,all right,title,interest, claim and demand which the said part les ; .of the first part have in and to the following described • ;? ,,` `., situate,lying and being in the - County of . ";'Weld."'!::::,,-t1 and State-ofColorado,to wit' ,,i 3; .Y (LEGAL. DESCRIPTION ATTACHED'`AND MARKED SCHEDULE A) .... ,.. , I`_ _ (NO CONSIDERATION IN THIS DEED -. TRANSFERRED-.--IN CONNECTION WITH , INCORPORATION OF AN EXISTING - BUSINESS. ) . . ,, I also known as street and number 12906 Weld County Road 13', Longmont, Colorado:"-'`. i:. AFFIDAVIT OF INTERESTED LAND OWNERS - - file:///DI/setSgl.asl AFFIDAVIT OF INTERESTED LAND OWNERS SURFACE ESTATE Subject Parcel: 120931000049 THE UNDERSIGNED,states that to the best of his or her knowledge the attached list is a true and accurate list of the names, addresses,and the corresponding Parcel Identification Number assigned by the Weld County Assessor of the owners of the property(the surface estate)within 500 feet of the property being considered. This list was compiled utilizing the records of the Weld County Assessor available on the Weld County Internet Mapping site,http://www.co.weid.co.us,and has not been modified from the original. The list compiled from the records of the Weld Cou ty Assess was assembled within thirty days of the application's submission date. • • p/ Signature Date Property Owners Within 5OO'ft. of Parcel# 120931000049 JNAME _ __ [ MAILING ADDRESS I PARCEL IDENTIFICATION# _�M 11955 WELD CO RD 15 NELSON HAROLD E&LA VERNA 120931000060 LONGMONT,CO 80504 13184 WELD CO RD 13 .R&M LAND CO 120736000029 LONGMONT,CO 80504 13184'WELD CO RD 13 'RADEMACHER FARMS LTD LIABILITY 120930000035 CO LONGMONT,CO 80501 13184 WELD CO RD 13 RADEMACHER LOUIS E&FRANCES 120725000020 I TRUSTEES • LONGMONT,CO 80501' 13184 WELD CO RD 13 RADEMACHER LOUIS J&FRANCES 120930300040 LONGMONT,CO 80501' PO BOX 17130 • RIVER RUNS THROUGH IT LLC 120736000028 BOULDER,CO 80308-0130 PO BOX 17130 RIVER RUNS THROUGH IT LLC 120736000060 BOULDER,CO 80308-0130 • 436.COFFMAN ST#200 ST VRAIN SANITATION DISTRICT 120931000059 LONGMONT,CO 80501 436 COFFMAN ST.STE 200 ST VRAIN SANITATION DISTRICT 120931000055 • • LONGMONT,CO 80501 PO BOX 2049 VARRA COMPANIES INC 120931000051 BROOMFIELD,CO 80038-2049 VARRA COMPANIES INC 'VARRA PASQUALE PO BOX 2049 120931000048 BROOMFIELD;CO 80038-2049 1 of 1 07/03/2001 9:19 AM ENVIRONMENTAL_CONSTRUCTION e COMPLIANCE 0 Qiaioina-ept4 •• July 13,2001 ��i0©�nt`J 27° • Ms.Shari.Lockman .�� 1 Weld County Planning ®� 1555 N. 17`s Avenue Greeley, Colorado 80631 - RE: Surface Estate and Mineral Rights Owners Varra.Coa#Ash Project • Weld County, Colorado CGRS.No. 1-135-2755aa- ' Dear Ms.Lockman: As requested,I have enclosed an updated property owners.list within 500 feet of the subject parcel (#120931000049). I have also- provided mineral owners information as available from Weld County Assessors office. , If you have any questions regarding this letter or require further information, please contact me at (970)493-7780. Sincerely, CGRS,INC. I , n ' Job L. dams,P.G. - cipal/Hydrogeo logist • Attachments cc: Mr.Chris Varra—Varra Companies weldcounty-pinestate P.O. BOX 1489 n FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 • ‘Htel DEPARTMENT OF PLANNING SERVICES . IIIgc PHONE (970)353-6100, EXT.3540 FAX (970)304-6498 1555 N. 17TH AVENUE GREELEY, COLORADO 80631 COLORADO August 2, 2001 TO: SURROUNDING PROPERTY/MINERAL QWNERS CASE.NUMBER: '3`d AmUSR-248 • There will be a Public.Hearing before the Weld County Planning Commission on Tuesday,August 21,2001„ at 1:30 p.m., in Room 210,.Weld County Planning Department, 1555.N. 17th Avenue; Greeley,.Colorado concerning the request of: NAME: Colorado Groundwater Resource Services/Varra Companies FOR: 3`d Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Solid Waste Disposal Facility,and Certificate of Designation (Coal Ash.Burial Project). LEGAL DESCRIPTION: Part of NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County, Colorado. LOCATION:Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. • • Your property is within five-hundred (500)feet,of the property on which this request has been made or you may have an interest in the minerals located under the property. For additional information write or telephone Julie Chester, Planner. Comments or objections related to the above request should be submitted.in writing to the Weld County Department of Planning Services,.1555 N. 17th.Avenue, Greeley, Colorado 80631',on or before the date of public hearing. For your convenience; the Department of Planning Services has instituted a Planning Commission Agenda Phone Line: In some circumstances cases need to be continued to a later date. To ensure that this case is being heard,you may call 970-304-6499, up to the day of the scheduled hearing for this information. . • • DEPARTMENT OF PLANNING SERVICES �. PHONE (970) 353-6100, EXT.3540 FAX (970) 352-6312 • • WELD COUNTY ADMINISTRATIVE OFFICES 1400 N. 17TH AVENUE • GREELEY, COLORADO' 80631 • �i COLORADO December 8, 1998 ' • • TO: SURROUNDING PROPERTY/MINERAL OWNERS • -CASEEE.NUMBER: 3rd.AmUSR-248 • There'willsbe a Public-Hearing before the Weld County Planning Commission on-Tuesday, January 19, 1999, at 1:30 p.m., in Room 101,:Commissioner's Hearing Room, Weld County Centennial Center, 915 10th Street, , - Greeley;,Colorado concerningthe request of: - NAME-Colorado Groundwater Resource Services/Varra Companies FOR:. A 3rd Amendment to a-Site Specific Development Plan and Use by Special Review Permit for a Coal - Ash Burial Project LEGAL DESCRIPTION: Part of the NW4 of Section 31, T3N, R67W of the 6th P.M., Weld County; Colorado. LOCATION: Approximately 1 mile north of WCR 26; approximatley 1 mile west of WCR 15. • Your property is within five-hundred (500) feet of the property on which this request has been made or you - may have an interest in the minerals located under the property. For additional information write or telephone Ben Patton, Planner. - Comments or objections related to the above request should,be submitted in writing to the Weld County Department of Planning Services, 1400 N. 17th Avenue, Greeley, Colorado 80631, on or before the date of public hearing. �� weldv 'nty Planning Dept. JUL V zvt`i4 ► RECEDED --A. June 29, 2001 liD o , a- - , COLORADO C./ . The Weld County Department of Planning Services has received the following item for review: -Applicant Colorado Groundwater Case Number 3f°AmUSR-248 Resource Services/Var=ra • Companies . Please Reply By July 20, 2001 Planner Julie Chester Project 3i°Amendment to a Site Specific Development Plan and Use by Special Review ' Permit for a Coal Ash Burial Project. Legal Pt. of NW4 of Sect. 31,.T3N, R67W of the 6th PIN.,Weld County; Colorado. Location Approximately 1'mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel Number 1209.31 000049 , — -- — --¢ The application is submitted to you for review and recommendation. Any comments or recommendation , you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to h the Planner the Department of associateding with vices. If a s.If you have any further • questions regarding the application, please Weld County Planning Commission Hearing(if applicable) August 21, 2001 O Jdite have reviewed the request and find that if does/does not comply with our Comprehensive Plan p-We have reviewed the request and find no conflicts with our interests. ❑ See attached letter. - Comments: Date to (.� Signature Agency 4-Weld County Planning DepL 4-1555 N.17th Ave.Greeley,CO.80631 +(970)353-6100 ext.3540 4(970)3046498 fax %._,/ 0 Weld County Planning Dept, • kU_ Z 2001 a RECEIVED I • "ilkV June 29, 2001 COLORADO CT • - The Weld County Department of Planning Services has received the following item for review: • Applicant Colorado Groundwater Case Number 3`d AmUSR-248 Resource Services/Varra • Companies Planner Julie Chester Please Reply By July 20, 2001 I ' Project 3rd Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. I • Legal Pt. of NW4 of Sect. 31,T3N, R67W of the 6th P.M'.,Weld County, Colorado. A roximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Location PP ` Parcel Number . 1209 31 000049 - The application is submitted to you for review and recommendation. Please reply by the ionabove orli listed dme dsoation you consider relevant to this request would be appreciated. we may give full consideration to your recommendation. Any response not received before or on this date may be deemed to be a positive response to the Department of Planning Services. If you have any further questions regarding the application, please call the Planner associated with the request. • • Weld County Planning Commission Hearing (if applicable) August21, 2001 p We have reviewed the request and find that it does/does not comply with our Comprehensive Plan X We have reviewed the request and find no conflicts with our interests. o See attached letter. Comments: Date iitJU ) Signature Agency ,s V \- 7 V P LLL7 nn n d / ph +++Weld County Planning Dep. +1555 N. 17th Ave. Greeley,CC.80631 ' 70)353-61 td0-ext.3540 +(970)304-6498 fax °ma .veid County Planning Dept: a.. t UL Z 0 2001 VE , d County efe rat June 9, 2001 . COLORADO cc. . -The Weld County Department of Planning Services has received the following item for review: Applicant Colorado Groundwater Case Number 3r' AmUSR-248 Resource Services/Varra Companies Please Reply By July 20, 2001 Planner Julie Chester Project 3"Amendment to a Site Specific Development Plan and Use by Special Review Permit for a Coal Ash Burial Project. Legal Pt. of NW4 of Sect.31,T3N, R67W of the 6th P.M.,Weld County,-Colorado. Location, Approximately 1 mile north of WCR 26; approximately 1 mile west of WCR 15. Parcel'Number 1209 31 000049 The application is submitted to you for review and recommendation. Any comments or recommendation you consider relevant to this request would be appreciated. Please reply by the above listed date so that we may give full.consideration.to your recommendation. Any response not received before or on this date may be deemed to be•a positive response to the Department of Planning Services. If you have any further . questions regarding the application, please call the Planner associated with the request. Weld County Planning Commission Hearing (if applicable) August 21, 2001 ` We have reviewed the request and find that it does/does-not comply with our Comprehensive Plan We have reviewed the request and find no conflicts with our interests. ❑ See attached letter. - • Comments: 7:77,--z-n‘l tie., rc..: - ete23 r%del ee�-w - /9,-. �"/v tire...,.n'c,/STi 2 %T__ �t Uri ...4 .---4 f/�!0'_ • Signatur€ \----- --O--t-1 • �^ Date / bA/ Agency - n-,n.�p /—lf/�794C/7r/3 +Weld County Planning Dept +1555 N.17th Ave.Greeley,CO.80631 +(970)353-6100 ext3540 +(970)304-6498 fax SOLID WASTE DISPOSAL SITES NAMES OF OWNERS OF PROPERTY WITHIN 500 FEET Please print or type NAME: . - ADDRESS, TOWN/CITY, ASSESSOR'S PARCEL STATE AND ZIP CODE IDENTIFICATION# 1 ianadar In is J& FLauss J 13184 Weld Co Ri 13 Iarnr_nt, CO 80501 1209303D0040 R� Farris acttr Fas Ltd. Liability(b ' 1318414-1d m Ri 13 Iagmtt, 0) Ol 120930000035 iigm. ..Giabert.1 7541 hold Oa Ri 26 3/4 to nmt, Q) 80501 120930000009 pmrd Gilbert P . 7541 Feld Oo Ri 26 3/41aarmt, m 80501 120929000026 Vasa Paaalw]a 2130-S %th St. Bromfield, CO 80023 120931000048 Yana-Sans•&Gravel Inc. 2130 S 96th St. Broarfield, CO 80020 120931000049 Vasa 0apaies Inc.. 2130 s 96th St. Brownfield, W 8CO20 120931000051 St Wain gnitaticn District 436 Oaf-faun St. STE d.ID Iagnmt, CU 80501 120931000055 I t Harold E& LA Verna 11955 W 1d (b Ri 15 Ic gnxxt, CO 02634 120931000026 • -ord Girth P 7541 W'eld Cb Ri 26 3/4lagcmt, OD 80501 120932000029 21nico Jct T'Jr & Judith A 7095 RI 26 3/4 Iagcmt, CO 80501 120932000028 O>as Bros ancrete Co 5550 S r dan Arvada, CO 80002 120932000027 RadanErier Tnris E & Frames J Trustees 13184 lkk1d Co Ri 13 Iagratt, CO 805)1 120725000020 J Bar B Inc.-c/o Aare G M sner•6D 34600 Ebx Rim RI Evergreen, CO 80439 120736000028 p5M land Co 13184 Sold Co Rd 13 Lcrimmt, 0) 80504 120736000029 Luke Ehergy Field __t-vinss 7tr. P.O. Boer 1642 lb star, IX 77251-1642 120736000027 aaa1d Rank P & L Jean 11979 ?fl 13 Icnsjimt, O) 80504 131301100052 -Biella, Ridard A& Lurk A. 6254 Wald Cb RI 26 Iarnmt, CO ✓30501 131106000060 Flath, Janes M. & Dolores L. . 6600 Wald Co Rd 26 Larar tt, W 80504 131106000024 Setts, ulna Altla . 6856 Wild Co Ri 26 Latirmt, 03 80504 131106000055 astral'held Co Water District 2235 2rd Ave. Grimier, 00 80631 13.1106000054 Cha , Jennifer M. 11843 Weld Co Ri 15 I taunt, CO 80`104 131106000052 J� Ridard Jaaes & J FHcard 7760 %ne1d Oo Ri 26 Ia wit 09 83534 131105000020 • NAMES OF MINERAL OWNERS AND LESSEES OF MINERALS Please print or type NAME STATE AND ZIP CODE ADDRESS, TOWN/CITY, • Varra. Companies , Inc. Colorado 80504. 21910 Longmont SURROUNDING PROPERTY OWNERS AND/OR SUBSURFACE ESTATES/INTEREST OWNERS 3b AMUSR-248 Louis &Frances Rademacher 13184 WCR 13 Longmont, CO 80501 • Gilbert Acord 7541.WCR 26 3/4 Longmont, CO 80501 Pasquale Varra Varra Companies/Sand &Gravel 2130 S. 961h Street Broomfield, CO 80020 St.Vrain Sanitation District 436 Coffman Street, Suite 200 Longmont, CO 80501 Harold &Verna Nelson 11955 WCR 15 Longmont, CO 80504 Joseph &Judith Timko 7095 WCR 26 3/4 Longmont, CO 80501 Owens Brothers Concrete Co. 5550 Sheridan Arvada, CO 80002 J Bar B Inc. c/o Duane Messner, MD 34600 Fox Ridge Road Evergreen, CO 80439 R&M Land Co. 13184 WCR 13 • Longmont, CO 80504 • Duke Energy Field Services, Inc. P.O. Box 1642 Houston, TX 77251-1642 Frank&Jean Sewald 11979 WCR 13 Longmont, CO 80504 Richard & Linda Biella 6254 WCR 26 Longmont, CO 80504 James &Dolores French 6600 WCR 26 • Longmont, CO 80504 Thelma Swarts 6856 WCR 26 Longmont, CO 80504 • Central Weld Water District 2235 2nd Avenue Greeley, CO 80631 Jennifer Chase 11843 WCR 15 Longmont, CO 80504 • Richard Vogl &Johnny Edward 7250 WCR 26 Longmont, CO 80504 • CERTIFICATE OF MAILING I hereby certify that I have placed a true and correct copy of the surrounding property owners and owners and lessees-of minerals in accordance with the notification requirements of Weld County in Case Number 3r°AmUSR248 in the United States-Mail, postage prepaid First Class Mail by letter as addressed on the attached list this 2n°day of August,2001. + otiDonita May • C( ENVIRONMENTAL• CONSTRUCTION • COMPLIANCE VC k,%Co4ntyA/ vnn/ October 22, 2001 �� 'o e o (JCT goept Rea, Mr. Kim Ogle Le® e Weld County Planning e°® 1555 N. 17m Avenue Greeley, Colorado 80631 RE: Third Amended USR Permit#248 Compliance With DMG Reclamation Plan Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755aa Dear Mr. Ogle: Varra Companies is in compliance with its MLRB permit requirements and the ponds conform to the grading requirements of the reclamation plan. The permit provides for the extraction of all aggregate resources, which has not been completed as of yet. If you have any questions regarding this letter or require further information, please contact me at (970) 493-7780. Sincerely, CGRS, INC. )S\ Joby L. A ms, P.G. • ipal/Hydrogeologist cc: Mr. Chris Varra—Varra Companies C:\home\W IN WORD\Varra\weldcountyusrmlrb.doc P.O. BOX 1489 • FORT COLLINS, COLORADO 80522 • PHONE: 970-493-7780 • FAX: 970-493-7986 +4 !,;•,,L., y Y fe� p i ' 4 l J ° r ,..,;44,,,,,,,d4,,,,„„... t ,♦ J . f? d f 1 h h 3 x_.t 5z,K - - c y ° l y '' z''':::/,..ii; a JY f v4 t ye s{ r_t, r 4 f '; +,� A i',,Gr y -,r�. `f� t etr .it j ?t . fl+ : fti S t r Y r rE. I �r rF 't 4j r'i l} y'. t^ 1. re �:i; - ^,. .nc t tr i i r y - - 1u t r Y 'tr- a `v;ft ) xL +,f`` r (y -,•:,',. .. `M . 1r'F ro+ - t , 4 t ,h .e >F ie' - +' Y ' ♦ If rzt:F ..:',..:..T.--,‘.'“,..',4tt . iVr+-1"2,'“,•',-1"".T * r.r'-'44.--"7""U tr - _a ♦ q._ Kf,r. a{ aF. r r y.Y .`. 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P ( r5 w y k T .: '� r .5 f t a r ) + Y n -t $ {` !- y'-t"4-:`4.-::••:4•••:',11-: - 'aa 'f: b,tY.e rj 4!r ✓4j W :rr !ss _t � ':Y t+ 1, 1 ._J S e Ftk ` 54ki: of 0F✓ ya }!y-•�{_. t JS I fq , t .f lz , Ay x _. s J i I '. ^+ .F -r 5 t �-' I t t' Y ,. ," r ) �'r -� �' $ge 'rt.i r r ..g t v .Y,4 _yr � ••+: �` n -. a , i .ix! .�,.)5 r tt:= Y v • T , l t El` yv ,r -1t 't x.'. ✓x7 r r; I �(Ysf T . tlaN o-3 i�i=t t, ee•.:�$h,R 6n•r1YaS( �. bts��r"n11 fL. fx 'f.�W ,+. ,Fn''rt� r .`' F°del ury ); .i6�rr n�avr�' Ji�JA,:0.4 r��r =%h�.`,ew'.,�.�� TABLE OF CONTENTS I. INTRODUCTION 1 A. Purpose 1 rl 1. Nature of the Problem 1 2. Scope of Work 1 II. BACKGROUND INFORMATION 2 A. Site Conditions 2 1. Location and Description 2 2. History 2 , B. Environmental Conditions 2 1. Geology and Soils 2 2. Surface Water Occurrence and Use 3 3. Groundwater Occurrence and Use 3 4. Land Use 3 III. SITE INVESTIGATIONS 3 A. Previous Investigations 3 B. Local Hydrogeology 3 C. Soil Borings 5 D. Monitoring Well Installation 5 E. Surface Water Sampling 5 F. Groundwater Chemistry 6 G. Fate and Transport Model 6 IV. CONCLUSIONS 6 V. METHODS AND PROCEDURES 7 A. Soil Sampling . 7 B. Soil Classification 7 C. Water Level Measurements • 8 D. Monitoring Well Sampling 8 E. Analytical Methods 9 F. Groundwater Elevation Measurements 9 1. Measuring Point 9 2. Access 10 3. Measurement 10 4. Decontamination 10 G. Purge Volume Computation 10 H. Purging and Sample Collection Procedures 10 1. Bailing 10 2. Sampling 11 r , 3. Field Cleaning Procedures 11 I. Laboratory Selection 11 J. Field and Laboratory Quality Control 12 1. Field Activities 12 2. Analytical Activities 13 3. Blind Duplicates 13 4. Equipment (Rinseate) Blank 13 5. Field Blank 14 6. Travel (Trip) Blanks 14 7. Protocol for Analyzing Blank Samples 14 VI. REMARKS 14 FIGURES Figure 1 -Site Location Map Figure 2-Area Use Map Figure 3 - Registered Water Well Location Map Figure 4-Water Table Contour Map TABLES Table 1 -Water Level Data Table 2-Water Quality Data Table 3- RLP Analytical Results APPENDICIES Appendix A - Grain Size Analysis/Slug Test Data Appendix B -Soil Boring Logs Appendix C -Analytical Data Appendix D -Steady State Model Results Appendix E-Analytical Parameters & Methods II {{ri I j r , , I II _ I. INTRODUCTION A. Purpose 1. Nature of the Problem The intent of this investigation was to determine the local groundwater hydrology and background water quality of a future solid-waste disposal site. Specifically the site will be used as a research facility to evaluate the influence of coal ash deposits in wet systems on water quality. Varra Companies has submitted a proposal to reclaim approximately 11 acres of a mined out, flooded gravel quarry using coal ash as fill material. Numerous permits have been submitted proposing bench scale testing followed by a small scale field study to evaluate the economic and technical feasibility of using coal ash as fill material in saturated conditions. The regional site location is shown on Figure 1. The effects on groundwater quality and hydrology as a result of coal ash burial will be evaluated by placing roughly 400 tons of coal ash within a trench at the location shown on Figure 2.The coal ash will be placed so that the water table intersects the coal ash and that any fluctuation of the water table will be within the coal ash bed. The coal ash will be buried in a trench measuring 10 feet in width, 100 feet in length and roughly 10 feet in depth. 2. Scope of Work The scope of work consisted of the following: • arranging for the location of subgrade utilities; • mobilizing to the site on four occasions; • supervising the drilling of three soil borings and obtaining representative soil samples for grain size distribution analysis; • completing the soil borings as two-inch diameter groundwater monitoring wells; • developing the monitoring wells and obtaining representative groundwater samples for laboratory analyses; • contracting for the analyses of one surface water and three groundwater samples to determine the concentrations of 29 elements and major cations and anions; • conducting two slug tests to determine the hydraulic conductivity of the aquifer; • obtaining groundwater levels on four occasions; • performing a registered well survey within a one-half mile radius of the property; and • preparing this report. Page 1 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report II. BACKGROUND INFORMATION A. Site Conditions 1. Location and Description The study area is an active gravel quarry located in the NW 1/4, Section 31, Township 3 North, Range 67 West of the 6th P.M., Weld County, Colorado (Figure 1). A United States Geological Survey investigation documented groundwater occurrence and movement near the study area. Underflow calculations in the vicinity of the study area indicate that 600 acre-feet of water passes across a two mile section of the alluvial valley each year. The estimated average depth to bedrock varies between 20 and 30 feet below ground surface. The average hydraulic conductivity is calculated to vary between 97 and 147 feet per day. Assuming a hydraulic gradient of 0.0023 feet per foot and a porosity of 0.27, the regional seepage velocity (actual groundwater flow velocity) is estimated to vary between 0.83 and 1.25 feet per day. 2. History Five different leaching experiments were conducted in order to evaluate coal ash leaching potentials. Two of the leaching experiments compared element and compound water quality for different pH ranges relative to effluent pore volume. However, the data generated from the different leaching tests were not comparable to each other or to water quality standards. It was recommended by various member of the Colorado ,Department of Public Health and Environment (CDPH&E) that additional leaching tests be performed that would simulate, to the extent possible, conditions that would be encountered at the Varra property. A modified form of ASTM D 4874-95 Standard Test Method for Leaching Solid Material in Column Apparatus was used to simulate field conditions. Testing results have been submitted as part of a permit application to conduct the pilot study. B. Environmental Conditions 1. Geology and Soils The surficial geology of the area as documented by Colton, 1978, varies between wind blown deposits of clay, silt and sand and sandy to gravelly alluvium, which are Holocene in age. Colluvium consisting of bouldery to pebbly sandy silt and clay may contain and interfinger with alluvium of various ages. The depth to groundwater at the site generally varies between three and ten feet below ground surface (bgs). The inferred groundwater flow direction varies from southeast to northeast depending on proximity to the Saint Vrain Creek. The Pierre Shale Page 2 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report underlies the unconsolidated alluvial deposits in this area. The depth to bedrock in this area as documented by field observation varies between 8 and 30 feet below ground surface. 2. Surface Water Occurrence and Use The nearest significant natural water body is the Saint Vrain Creek, which is approximately 2,500 feet south of the site and flows to the east/northeast. Mr. Gambrell, water commissioner for Division I, District 5 water district, indicated by phone conversation that there are no domestic or agricultural diversions off the St. Vrain River in the study area. He did indicate that Public Service Company operates a diversion and that water is used for cooling purposes. Numerous ponds created by gravel mining operations exist and are used primarily for recreation. 3. Groundwater Occurrence and Use Water well records obtained from the Colorado Division of Water Resources indicate that one well may be located within one-quarter mile of the proposed test plot. The registered well owner is Dakolios Construction and the permitted use of the well is industrial. The location of:registered wells within a half-mile radius of the proposed test plot are depicted on Figure 3. Field verification of well locations and construction details, if available will be performed prior to project start-up. 4. Land Use The site is and active gravel quarry and surrounding land use consists of agricultural, rural residential, commercial and open-cut gravel quarry operations. III. SITE INVESTIGATIONS A. Previous Investigations Background water quality monitoring of the adjacent gravel quarry pond was conducted between May 1999 and April 2000. Analytical results of surface water samples obtained from the pond are presented in Table 2. The sampling location is depicted on Figure 4. B. Local Hydrogeology The material that the water table is located in can be described as sand with gravel with the depth to water varying between 1.5 and 5.5 feet below grade. The Pierre Shale underlies the unconsolidated alluvial deposits and extends to beyond the depths explored during this project. The depth to bedrock within the study area ranges between 8 feet and 15 feet below grade. Over Page 3 CGRS,INC. Vacs Coal Ash Project Groundwater Investigation Report the entire site, the saturated thickness of the aquifer averages 5.61 feet. The groundwater flow direction within the study area is from north to south and is reflective of local topography. The groundwater flow direction is expected to be toward the northeast in the immediate vicinity of the Saint Vrain Creek. The hydraulic gradient varied between 0.0165 and 0.023 ft/ft., during the report period. Figure 4 depicts groundwater contours for November 2001. Terracon Geotechnical Services reports the dry density of gravel deposits in this area at 1.89 g/cm3 or 118 pounds per cubic foot. Grain size distribution analysis shows the aquifer consists of gravel with sand. An approximate specific gravity of gravel is roughly 2.61. The resulting porosity is then 0.27. McWhorter and Sunada (1977) report the average effective porosity of coarse gravel and sand to vary between 0.21 and 0.30. The effective porosity in the case at hand would be expected to vary between 0.21 and 0.27. Two slug tests were utilized to determine the hydraulic conductivity of the upper portion of the aquifer. Hydraulic conductivity values (K) varied within an order of magnitude, ranging from 20 to 203 feet/day. The average of the arithmetic and harmonic mean (75 feet per day) was utilized in subsequent calculations. The groundwater flow rate was estimated using the following equation: v = Ki where: v = average groundwater flow rate (ft/day) K = hydraulic conductivity (ft/day) i = hydraulic gradient (ft/ft) = porosity (dimensionless) By using the following parameters: n K = 75 feet/day (estimated from slug test) i = 0.0165 - 0.023 ft/ft (measured) = 0.27 (calculated) the groundwater flow rate is calculated to vary between 4.58 - 6.39 feet per day. Slug test analyses and grain size distribution curves are presented in Appendix A. Page 4 - CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report C. Soil Borings On September 29th, 2001 three soil borings were drilled with a truck mounted, hollow stem power auger. The soil borings were advanced to between 10.5 and 16.5 feet below ground surface (bgs). Representative soil samples were obtained by advancing a two-inch outside diameter split barrel sampler ahead of the auger bit in borings MW-1 and MW-2. A four-foot, continuous split barrel sampler was used to obtain soil samples from boring MW-3. Details of each boring log are presented in Appendix B. Local soil lithology descriptions were recorded during drilling activities. In general, soil conditions consist of two to five feet of fine-grained alluvial deposits of brown clay, silt, and fine- grained sands, which are underlain by six feet of gravel with sand. Bedrock, which consists of a dense, dark gray shale (Pierre Shale) underlies the sand and gravel deposits. D. Monitoring Well Installation All of the three soil borings drilled at the site were completed as two-inch diameter groundwater monitoring wells. All monitoring wells were constructed with 0.01-inch factory slotted PVC well screen with a blank PVC riser. All monitoring wells were completed within a 4"x 4" above grade monuments. The depth of the wells varied between 8 and 15 feet bgs. Monitoring well - construction details are presented in Appendix B. E. Surface Water Chemistry Surface water samples were obtained to document surface water quality of the gravel pond adjacent to the proposed coal ash trench. Five samples were obtained between May 1999 and November 2001. All samples were obtained at location depicted on Figure 4. The samples were analyzed for all constituents of concern identified for this project. Analytical results are presented in Table 2. Laboratory reports and chain-of-custody documentation is presented in Appendix C. A review of Table 2 shows that all pond samples exceeded the standard for sulfate. Pond samples exceeded the standard for iron, lead, manganese, nitrate and selenium on one sampling event for each constituent. Page 5 • CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report • F. Groundwater Chemistry Groundwater quality samples were collected from monitoring wells MW-1 and MW-3 on October 5, 2001 and from MW-2 on November 9, 2001. The samples were submitted to Technology Laboratory, Inc. of Fort Collins, Colorado and analyzed to determine dissolved elemental concentrations along with major cations and anions. The laboratory results are summarized in Table 2. Laboratory reports and chain-of-custody information are presented in Appendix C. A review of Table 2 shows that two groundwater samples exceeded primary or secondary standards for manganese and selenium. All groundwater samples exceed the standard for sulfate. In addition, relatively high levels of boron and molybdenum were observed in groundwater samples as well. G. Fate and Transport Model A three-dimensional, steady state analytical model was used to estimate the concentration of boron and selenium at various locations downgradient of the proposed trench. Analytical data from the RLP bench scale testing were used to estimate possible impacts. The average concentration of the five pore volume analyses was used as the source concentration. In the case of selenium the method detection limit value was used when the concentration was below the reporting limit. Concentrations were estimated at distances of 50 and 100 feet as the state will require that sentinel wells (also known as action wells) be installed 50 feet downgradient of the trench and the gravel quarry pond is roughly 100 feet down stream of the proposed trench. The calculated values for boron at 50 and 100 feet are 1.240 and 0.616 mg/L. The calculated values for selenium at the same distances are 0.0062 and 0.0030 mg/L. The model values should be conservative, as they do not account for retardation or water-rock interactions that may occur. Model data indicate that adverse impact to off-site properties will not occur. Model results are presented in Appendix D. Page 6 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report IV. CONCLUSIONS Analytical data generated from the column leaching experiment indicate that the leaching characteristics of coal ash used in this study are relatively benign. The most mobile constituents of concern appear to be boron, molybdenum, sulfate and to a lesser extent selenium and manganese. It also appears that coal ash reduces dissolved uranium levels. Analytical data generated from surface and groundwater sampling indicate relatively high background levels of boron, selenium, manganese, molybdenum, uranium and sulfate. It appears this site is well suited for a study of this nature as natural water has elevated elemental levels of the most mobile constituents in the coal ashes used in this study. Analytical models _t indicate that no standards will be exceeded at downgradient compliance points and that within 100 feet of the ash deposit leachate concentrations will be near or below background levels. V. METHODS AND PROCEDURES A. Soil Sampling Soil sampling was conducted in accordance with ASTM:D 1586-87. Using this procedure, a two- inch O.D. split-spoon sampler will be driven into the soil by a 140 pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sample an additional 12 inches, known as the penetration resistance (N value), will be recorded. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. - Continuous soil sampling was performed in accordance with ASTM procedures described in D 4700 section 9.4.6. Using this procedure, a two-inch outside diameter, continuous split barrel sampler is advanced ahead of the rotating hollow stem auger. After the auger has been advanced to its desired or maximum attainable depth the sampler is withdrawn. The sampler is then opened in the same manner as a conventional split barrel sampler. B. Soil Classification As the samples were obtained in the field, they were examined and described in accordance with ASTM:D 1488-84. Representative portions of the samples were retained for further Page 7 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report examination and for verification of the field classification. The physical observations and results of examination with field instruments were recorded on soil boring logs. • C. Water Level Measurements All groundwater level measurements were obtained using an electronic measuring device which indicates when the probe is in contact with groundwater in the well. Measurements were obtained by lowering the device into the well until it indicated that the water or fluid surface was encountered and by measuring the distance from the top of the riser pipe to the probe. All of the • measurements were recorded to the nearest 0.01 foot. To minimize the potential for cross- contamination, the water level indicator was decontaminated with a laboratory grade detergent, • isopropyl alcohol and distilled water between sampling of each well. D. Monitoring Well Sampling All monitoring wells were sampled according to the protocol described below. All pertinent information was recorded on a sampling information form. The sampler wore a new pair of disposable latex gloves for each sample collected. Field Protocol Step 1 - Measure water level. Step 2- Develop each well by removing a minimum of three well bore volumes with a dedicated teflon, stainless steel or disposable polyethylene • bailer. Step 3- Collect water sample with a teflon, stainless steel or disposable polyethylene bailer. Step 4- Filter samples to 0.45 microns. Step 5- Cool sample to approximately 4°C for transportation. Step 6- Store water sample and transport to specified laboratory, following all documentation and chain-of-custody procedures. Upon completion of monitoring well sampling, a chain-of-custody log was initiated. Chain-of- custody records include the following information: project name and number, shipped by, shipped Page 8 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report to, suspected hazard, sampling point, location, field identification number, date, time, sample type, I number of containers, analysis required and sampler's signature. The samples and,chain-of-custody records were delivered to the laboratory. Upon arrival at the laboratory, the samples were checked in by the appropriate laboratory personnel. Laboratory identification numbers were noted on the chain-of-custody record. Upon completion of the laboratory analysis, the completed chain-of-custody record was returned to the project manager. E. Analytical Methods Chemical parameters and analytical methods which were used for their quantification's are presented in Appendix E. F. Groundwater Elevation Measurements The following outlines our standard groundwater quality sampling methodology. Before purging any of the soil test borings or monitoring wells, water level measurements must be taken. 1. Measuring Point Establish the measuring point for the well. The measuring point is marked on the north side of the top of the temporary monitoring well riser. The top of the riser is normally a two or four inch casing inside a locked protective casing. The riser will be PVC pipe, galvanized pipe or stainless steel pipe. The measuring point should be described on the groundwater sample collection • record. 2. Access After unlocking or opening a temporary monitoring well, the first task will be to obtain a water level measurement. Water level measurements will be made using an electronic water level indicator. Depth to water and total depth of the well will be measured for calculation of purge volume. 3. Measurement To obtain a water level measurement, lower a decontaminated electronic water level probe into the monitoring well. Care must be taken to assure that the electronic probe hangs freely in the Page 9 CGRS,INC. Van,Coal Ash Project Groundwater Investigation Report monitoring well and is not adhering to the well casing. The electronic probe will be lowered into the well until the audible sound of the unit is detected and the light on the electronic sounder illuminates. At this time, the precise measurement should be determined by repeatedly raising and lowering the probe to obtain an exact measurement. The water level measurement is then entered on the groundwater sampling collection record sheet or groundwater level data sheet to the nearest 0.01 foot. 4. Decontamination The electronic probe shall be decontaminated immediately after use by wiping with isopropyl alcohol-soaked paper towels. Always proceed in order from the suspected cleanest well or soil test boring to the suspected most contaminated one. G. Purge Volume Computation All soil test borings and temporary monitoring wells will be purged prior to sample collection. Depending upon the rate of recovery, three to five volumes of groundwater present in a well or bore hole shall be withdrawn prior to sample collection. If a well or bore hole bails dry, the well or - bore hole should be allowed to recharge and a sample taken as soon as there is sufficient volume for the intended analysis. The volume of water present in each well or bore hole shall be computed using the two measurable variables, length of water column in soil boring or temporary monitoring well and diameter. H. Purging and Sample Collection Procedures 1. Bailing • Obtain a laboratory decontaminated stainless steel or teflon bailer and a spool of nylon rope or equivalent bailer cord. Tie a bowline knot or equivalent through the bailer loop. Test the knot for adequacy by creating tension between the line and the bailer. Tie again if needed. New rope will be used for every sample or purge. New clean latex gloves will be used when touching the rope or bailer. • Place the bailer inside the well to verify that an adequate annulus is present between the bailer and the well casing to allow free movement of the bailer. • Lower the bailer carefully into the well casing to remove the sample from the top of the water column, taking care not to agitate the water in the well. Page 10 CGRS,INC. Vatra Coal Ash Project Groundwater Investigation Report • Pour the bailed groundwater into a bucket. Once the bucket is full, transfer the water to a barrel and contain on-site. • Raise the bailer by grasping a section of cord, using each hand alternately. This bailer lift method will assure that the bailer cord will not come into contact with the ground or other potentially contaminated surfaces. 2. Sampling. • Instructions for obtaining samples for parameters are reviewed with the laboratory coordinator to insure that proper preservation and filtering requirements are met. • Appropriate sample containers will be obtained from the contract laboratory for the Hazardous Substance List (HSL) for metals and HSL for organics. After samples are collected, they will be put on ice in coolers (4°C). Care will be taken to prevent breakage during transportation or shipment. • Samples collected by bailing will be poured directly into sample containers from bailers. The sample should be poured slowly to minimize air entrapment into the sample bottle. During collection, bailers will not be allowed to contact the sample containers. • Upon completion of sampling a chain-of-custody log will be initiated. Chain-of-custody records will include the following information: project name and number, shipped by, shipped to, suspected hazard, sampling point, location, field ID number, date, time, sample type, number of containers, analysis required and sampler's signature. The samples and chain-of-custody will be delivered to the laboratory. Upon arrival at the laboratory the samples will be checked in by the appropriate laboratory personnel. Laboratory identification numbers will be noted on the chain-of-custody record. Upon completion of the laboratory analysis, the completed chain- of-custody record will be returned to the project manager. 3. Field Cleaning Procedures For all equipment to be reused in the field, the following cleaning procedures must be followed: • Disassemble the equipment to the extent practical. • Wash the equipment with distilled water and laboratory-grade detergent. • Rinse with distilled water until all detergent is removed. • Rinse the equipment with isopropyl or methanol, making sure all surfaces, inside and out, are rinsed. • Triple rinse the equipment with distilled water. l I. Laboratory Selection The project manager should consider the following factors when selecting a laboratory: Page 11 li CGRS,INC. Varsa Coal Ash Project Groundwater Investigation Report 1 ' • Capabilities (facilities, personnel, instrumentation), including: . • Participation in interlaboratory studies (e.g., EPA or other Federal or State agency sponsored analytical programs); • Certifications (e.g., Federal or State); • References (e.g. other clients); and • Experience (UST, RCRA and other environmentally related projects). • Service: • Turnaround time; and • Technical input (e.g., recommendations on analytical procedures). The project manager is encouraged to gather pertinent laboratory-selection information prior to extensively defining analytical requirements under the project. A request may be made to a laboratory to provide a qualifications package that should address the points listed above. Once the project manager has reviewed the various laboratory qualifications, further specific discussions with the laboratory or laboratories should take place. In addition, more than one laboratory should be considered. For large-scale investigations, selection of one laboratory as a primary candidate and one or two laboratories as fall-back candidates should be considered. The quality of the laboratory service provided is dependent on various factors. The project manager should be able to control the quality of the information (e.g., samples) provided to the laboratory. It is extremely important that the project manager communicate to the laboratory all the requirements relevant to the project. This includes the number of samples and their matrices, sampling schedule, parameters and constituents of interest, required analytical methodologies, detection limits, holding times, deliverables, level of QA/QC, and required turnaround of analytical results. J. Field and Laboratory Quality Control Quality control checks are performed to ensure that the data collected is representative and valid data. Quality control checks are the mechanisms whereby the components of QA objectives ore monitored. Examples of items to be considered are as follows: 1. Field Activities: Page 12 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report • Use of standardized checklists and field notebooks; • Verification of checklist information by an independent person; • Strict adherence to chain-of-custody procedures; • Calibration of field devices; • Collection of replicate samples; and • Submission of field blanks, where appropriate. 2. Analytical Activities: • Method blanks; • Laboratory control samples: • Calibration check samples; • replicate samples; • Matrix-spiked samples; • • "Blind" quality control samplers; • Control charts; • Surrogate samples; - • Zero and span gases; and • Reagent quality control checks. 3. Blind Duplicates • Blind duplicate samples will be collected by CGRS for 10% of the samples collected or once per site, whichever is greater. These blind duplicate samples will be forwarded to the laboratory as a check of laboratory reproducibility. • 4. Equipment (Rinseate) Blank The equipment (rinseate) blank is designed to identify potential cross-contamination in the field between sample sources due to deficient field cleaning procedures. This blank also addresses field preservation procedures, environmental site interference, integrity of the source blank water for field cleaning and those concerns singularly addressed by the travel blank. Page 13 CGRS,INC. Vatra Coal Ash Project Groundwater Investigation Report Equipment blanks are taken once per site, when equipment is cleaned in the field. This provides a quality control check on field cleaning procedures. 5. Field Blank Field blanks are used to evaluate the sample container filling procedure, the effects of environmental contaminants at the site, purity of preservatives or additives and those concerns uniquely addressed by the travel blank. Field blanks are taken downwind of the most contaminated area of the site by filling laboratory cleaned and prepared sample containers (appropriate for the parameter group) with deionized or organic-free water supplied by the laboratory. The blank sample container is then sealed, grouped, transported and stored with the real samples collected for the same parameter group. 6. Travel (Trip) Blanks The travel blank is designed to address interferences derived from improper sample container cleaning preparation, contaminated source blank water, sample cross-contamination during storage/transport and extraneous environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Travel blanks are composed in the appropriate sample container using source blank water. Preservatives or additives are added if required for the parameter group. Travel blanks are then sealed and stored in the ice chest where real samples will be stored and transported. Travel blanks are to originate at the laboratory providing the blank water for the equipment and field blanks. 7. Protocol for Analyzing Blank Samples If used, the equipment blank will be analyzed first. If contamination is found to be present, the field blank will then be analyzed. If the equipment blank is not used, the first blank analyzed will be the field blank. If any blank is found to be contaminant-free, the sequence of analyses will be terminated. Page 14 CGRS,INC. Varra Coal Ash Project Groundwater Investigation Report VI. REMARKS The discussion and recommendations in this report represent our professional opinions. Our conclusions, opinions and recommendations are based on information available at this time, and we do not guarantee that undiscovered conditions will not become evident in the future. CGRS' • report was prepared in accordance with currently accepted engineering practices at this time and location, and no other warranties, representations or certifications are implied or intended. Page 15 ; REFERENCES Colton, E. B., 1978, Geologic map of the Boulder—Fort Collins—Greeley area, Colorado: U. S. Geological Survey Miscellaneous Investigations Map I-855-G, scale 1:100,000. Harr, M. E., 1962. Groundwater and Seepage. McGraw Hill, New York, pp 119-121. McWhorter, D. and Sunada, D. K., 1977. Groundwater Hydrology and Hydraulics. Water Resource Publications, Littleton, Colorado, pp 18-31. Schneider, P.A., 1983, Shallow groundwater in the Boulder—Fort Collins—Greeley area, Colorado, 1975-77: U.S. Geological Survey Water Resources Investigation Report 83-4058. FIGURES Olio' ny . --N vit......, I ii 4950 /.• 4894 -- - O u .. , •� • •_ u I I II ��I v Ytt II ^ h I 1J ,c1 /.. �x flU// i P " �i II A II 9 II o o= --.^.I II - =2. . II I =n II I • 2� 29 ya 0 .o /J .•�/ a d19. 221 I l‘\ : I I `sJ /-r- -r---, AB: ... f �i II 517E �- •ae� s' • Ia_ ,�I • Z5 LOCATION �� °• I yY.ar 3a. \ a4 <t;��-�"1'}'• qq �y. j ,✓" Ian .. A 4810 • iL }v; .' • z.. n • ;'4•r r . ,''• r,Ja • ;,� , t Vrain Soh 3611 °'° c / i 32 / 4809!1 a 11 p— `I h u% e' O P . ..Cri . u II .• v0 p _ II li BM I_' ^I'�i 11 _ '' 4623 —1 am ° 4813 • 48/3 II 4_�ri�L�- CHANCE ' I II . —__.—I II p e 0 4 p/ 10 .3 • • 4826 I =_ ` ' / O il 1 . 4830 • /TOH p III • h 1 ' -�_ • 4 I 6 �F� - ° ,4 9 • ^ - I C4650� o - --_ 4 00�• FIGURE 1 GOWANDA QUADRANGLE SITE LOCATION MM' COLORADO-WELD CO. • VARRA COAL ASH PROJECT 7.5 SERIES • PROJECT NO. PREPARED BY CGRS, Inc. I I 1-135-2755 JLA COLORADO GROUNDWATER 0 2000 DATE 07/02/9;REVIEWED BY RESOURCE SERVICES a•ftw� • ,R a .a'• ▪ ,I ' +s }` ' < , YY r /y y ,_!� "t ,, .:A 't+ter - a:.}= r gwrin_':. t� --kl" +1>(e+x.'"rk,•-.•. -.+r LZu.=.' a 'r ' .» t•-, :w• , r'tX,...tap,„} M • 0' �— PROPERTY' ;an.*▪' "1r„..,..,,,,..,...,.',„, ", SHOP#'`"''' ,' 'BOUND ea ,,. , .. L y .,.` F. -,.-- vr. $ r. `� '��.r"'%tic'4"+' + lts 5' M �.' } S' ^'' "'„•.y `•� }} ;p{r, tw.,'4'y" '" 4 ". M. y• • 1. a ,1 d � 'K 'OFFICE 4 3 s .� v `•;t s�+a 4- t •1 j:kil ., .. 'r 9. '3, T - .tom. -♦ t .A I.:• 't "%. ° • , • •is t . * "fr i _ • l—'+ !iy WPN,i'7•N`' ." �• �'. r .. '��`�...d � ' y . >yt EMyI' �k' h -", •Y' 1 k, R°?°_'e ., '7`T. ,: 4 kt': - i r' y - �'. •k,tb..wi ' s'' Y R .Xt # jP " os,° l 7.•`ZV rr „ , le x rh K. • .iwy ' �Tr P �/.0 ill{g 'nr , S"".'. �� ` • POND ,,,,,;,.1,,,,‘,..i?, " Sa:P tl4. :e= . f. - .yl �� bM F" •.S, , 4 t' 4 , •.r • , r y. . I :,':lel • • FIGURE 2 'A AREA USE MAP LEGEND: ``° !.# / r ` . VARRA COMPANIES i ' x +yk' •: WELD COUNTY ROAD 13 0 EXISTING MONITORING WELL � LONGMONT, COLORADO I im PROPOSED TRENCH LOCATION * 'r°-' *t,'- ". 1,Xr MEASURED GROUNDWATER •• ST RQ, 'fi t '"" PROJECT NO. PREPARED BY " 814' r' a //1G FLOW DIRECTION _ y" ^ ° *Co FK e4+„�ytin: 1-135-2755aa PJB ` _l •ENVIRONMEMAI .+ a V Vsoc CCNSTRNCTON ' Al' - L"', DATE REVIEWED BY •COMPLIANCE SCALE 1"=300' A ` •' :� - rr -- he-- 11/13/01 11/13/01 - \\:15-7—D -.- • - ' a .__>-. ...) . _.; 4 19 c � • 0 �e�4s k 1 ° .04c4 - i 16/0 ° A96• I, , .i J/(/A g00a • — — — • • 4894 _ 4�]8 - -_ , V]l - • ir u ` _ �I II o II 1 0 = 1�1 II II I`t II - u 9 II .. II u ii II / Q ` o Ditch 0 . , cn o.. 7 5 „ • O7. 29 . r oi d C y9 0 U ag00 / ` u . CY a. /... .. ? •r5�,.w 1. Wt '� n• 4810 I r •l7�� ...� fp•�- / `:: 4860 © 714 tj�• •. 4 i`+!j;•#�t r�`':es ..• �- %e6St Vrain Sch y „ I 4eoo w �9 .o� 36Y �! •� frfro 32 •® a,4 3o-1 . •31 4 gt 6 4809 U li n o n -4-a l°— . I S4 i I° / a / 6 O11 • II- � - xa II h p Y I II ii i• E ' fI�' -- II o ° • 48/3 CHANCE 4823 • 4813 II-... ° I� v_ I III ,4, b °56 / I o . I II li // 9 � ��. 1 • . I o0 �J ,..S 4830 • �� //' y f/ U ii 6 T( FIGURE 3 GOWANDA QUADRANGLE A REGISTERED WELL LOCATIONS COLORADO-WELD CO. VARRA COAL ASH PROJECT 7.5 SERIES PROJECT NO. PREPARED BY CGRS, Inc. • 1-135-2755 AA COLORADO GROUNDWATER 0 2000 DATE RE\QEWED BY RESOURCE SERVICES 11/28/2001 ��` - . PROPERTY BOUNDARY MW-2 MW-3 (92.93) (92:84) 92.75 SHORE LINE 92.50- 92.25 92.0 ---- ----- 91.755 MW-1 (91.61) POND • • LEGEND FIGURE 4 O SURFACE WATER SAMPLE POINT WATER TABLE CONTOUR MAP G MONITORING WELL LOCATION VARRA COAL ASH PROJECT INFERRED GROUNDWATER CONTOURS WELD COUNTY ROAD 13 (CONTOUR INTERVAL=.25 FT.) LONGMONT, COLORADO (92.84) GROUNDWATER ELEVATION(IN FEET) 0 100' PROJECT NO. PREPARED BY 1-135-2755aa RACAD CGRS - INFERRED FLOW DIRECTION - DATE REVIEW`ED BY COLORADO GROUNDWATER SCALE IN FEET 12/03/01 Ic 1'c RESOURCE SERVICES TABLES TABLE 1 Groundwater Elevation Data - Varra Coal Ash Project 12910WCR13 • Longmont, Colorado . CGRS Project NO. 1-135-2755aa I Reter$rtce Aep#lz Ta groundwater Ejevatioft(#i)--?r4ufistNrata titj ' eievatrs tt} MW-1 09/26/01 96.71 4.83 91.88 10/05/01 96.71 4.89 91.82 10/08/01 96.71 4.90 91.81 11/09/01 96.71 5.10 91.61 MW-2 09/26/01 102.76 8.73 94.03 10/05/01 102.76 9.05 93.71 10/08/01 102.76 9.11 93.65 11/09/01 102.76 9.83 92.93 MW-3 09/26/01 101.40 7.77 93.63 10/05/01 101.40 7.98 93.42 10/08/01 101.40 8.03 93.37 11/09/01 101.40 8.56 92.84 Notes: Water levels are based on an arbitrary datum assigned an elevation of 100.00 feet. Page 1 of 1 _ - - - , TABLE 2 Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 r58mplef n-�At `f P� $I)e 7,.A9 rantqffl O3.04{i i CI.- ? u.s ' �C t 4 4i'4111,L .2; v 'q '{ "qt^r.t SI-`q. �k'F114 Y'$i F r -9.0' ,' VAIN: r .>3 Cd)r hCa,, Cr „ C9Is Cu- �'tI)atB� ,...:p.u',x':.u.`.c..:;. ! �< )'-...?. .., , , to �+r.� .i�,L,...e ?.�4:{`..:..':,:v'...5..,:,�8. ��' iwr,.i......«,. ,S.» , +E"t e.rr ry u..r' u z ° n ,� 7 f 14 x, e , ti #gi -+ 4 ril Cary z �+" rr v tM: u' t d, t rpxr f rr ,r .:o.F+? a *t.��IR:.x-e!:'7�zl m_s,m..*2 .cam ;.,-.� S . ..r...Z{.r.. f.n. ...I .,..v� .x_�a dcfix.,..l�n:�.<N.. .+Gv +�F.�rA..�.��. ,.v .. e f i .... _„ tea,..T,__.,..w..:.11; MW-1 10/05/01 7.4 <0.02 <0.006 <0.005 0.022 <0.003 0.334 <0.001 139 <0.004 0.002 <0.003 <0.007 <0.003 0.050 179 11/09/01 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA MW-2 10/05/01 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 11/09/01 7.3 <0.02 <0.006 <0.005 0.041 <0.003 0.348 <0.001 157 <0.004 <0.002 <0.003 <0.007 <0.003 0.045 184 MW-3 10/05/01 NA <0.02 <0.006 <0.005 0.037 <0.003 0.3 <0.001 152 <0.004 0.00 <0.003 <0.007 <0.003 0.053 176 11/09/01 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 05/26/99 7.6 2.60 <0.006 <0.1 0.09 <0.004 0.21 <0.005 110 <0.01 <0.01 <0.01 1.80 0.052 0.20 53 12/20/99 8.3 <0.05 <0.006 <0.003 0.032 <0.004 0.44 <0.005 210 <0.01 <0.01 <0.01 <0.006 <0.002 0.057 290 Pond Water 02/28/00 8.2 <0.05 <0.003 <0.003 <0.02 <0.004 0.66 <0.005 170 <0.01 <0.01 <0.01 <0.01 <0.002 0.059 450 04/04/00 8.2 0.056 <0.003 <0.003 0.980 <0.003 0.38 <0.004 179 <0.01 <0.01 <0.01 <0.01 <0.002 0.060 440 11/09/01 8.4 <0.02 <0.006 <0.005 0.025 <0.003 0.880 <0.001 125 <0.004 <0.002 <0.003 <0.007 <0.003 0.070 444 ''a, `r i' `t a;F,�)5 " {'E fiz 15`014 "0 005#` 0 950. %i 2 ei2 OP4 ,O75/5 a 0 00S? i0�std`▪ O 800, 0 05(f g20/1 0 Q,3o/5'0 '91050`1 72 5O°;n4 stdT Stand d p_ ..'!A. 1111 .:115i` r..`• P ' `.s i A/S P?.$$W Miro ,b A.i'. Notes: NA=Not Analyzed A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard All values reported In milligrams per liter(mg/L) - Page 1 of 3 Table 2 Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 `�•✓sr1L u. 'mot t �^ rw71"r. . rw.. a °- i Ff'5. , ., e, r '_rs ,x i a A 1-' rae �'sa ) IT kas i ' Sam lelDjer £ 1Sempte! ' a ili ,. i . s x -,r r 1 TrC. 4l ,.I43tVr `Zri G. H 3`S'. . ,a: p i f1 ,Mnt MO r-NI �A p 7 $B A x 'iylda,.A y v. ' '� 'f n 9t, •..';4 . Ali o i ( n (' .h Ar'p ika '^ s ! �r u N 3.. n � c J�, .c .- J � s4 rr 9t "p._ �.i nr 1.3. ....r...�. ...h. tu:x.r,....It.pate t; .,sr c...... ..........�i�. .,_..e(.� i ........ .».. .�....,,.. .-...J.n_..._r1 ..._.�v. (.,✓_. ..�.....`n u`i.rfillefi ..n+�t,T;.«Mtif).r4M11}V,'�tr't�sM1e 'i.Si rl7.xur.�atbz (.�i� t i �w.al.s_ u.v`'l �..,� a l.....2.U4 x. ? :Tilly m5",� YXt�z=rAIyrztr Fu"2'kliirl drSi',akV i°gn MW-1 10/05/01 7.44 0.045 0.045 <0.005 0.198 5.35 0.029 <0.002 174 <0.01 <0.005 <0.003 <0.002 <0.0002 <0.015 11/09/01 NA NA NA NA NA NA NA NA 190 NA NA NA NA NA NA MW-2 10/05/01 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 11/09/01 7.28 0.218 0.040 <0.005 0.236 6 0.094 <0.002 181 <0.01 <0.005 <0.003 0.11 <0.0002 0.029 MW-3 10/05/01 7.48 1.73 0.096 <0.005 0.17 9 0.027 <0.002 <1 <0.01 <0.005 <0.003 <0.002 <0.0002 0.0190 11/09/01 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Pond Water 05/26/99 7.6 0.58 <0.01 <0.004 NA <5 <.1 <0.01 120 0.078 <0.002 <0.01 <0.02 0.00022 NA 12/20/99 8.3 <0.005 NA <0.004 0.19 6.4 <.01 <0.01 300 NA <0.002 <0.01 <0.02 <0.0002 NA 02/28/00 8.2 <0.005 <0.01 <0.004 <0.05 9.3' <0.005 <0.01 410 <0.01 <0.002 <0.01 <0.02 <0.0002 0.041 04/05/00 8.2 <0.005 <0.01 <0.04 0.09 10.0 <0.005 <0.01 460 <0.01 <0.002 <0.01 <0.02 <0.0002 0.047 11/09/01 8.36 0.017 0.075 <0.005 0.061 11.9 0.045 <0.002 495 <0.01 <0.005 <0.003 0.02 <0.0002 0.043 Stand;irdS' ' ' ! �s Q.050 ,no%td '$012004:11o.Stdi El1/401(1;1 005/002;' -o,05p';,no.S* no,',Std 700Q2'_ rz'p o02ir x.rdit&' u;:[S .P.` .:if; i f . P/A '!i A P,. ... 'C... `.. P.,i n`'...A .., A,:4 P....• Notes: NA=Not Analyzed A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard All values reported in milligrams per liter(mg/L) • • Page 2 of 3 TABLE 2 Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 411 'i' ...................... "� ', ': 'l Total i All link as Alkalinit as Alkali fO se kOhloride 'Fiuonde Sulfate oli rot NltHio 'Y ,, r Nni, t (a r rr Ya F r* y a ")ae I , ,� r i , , i , 4 Sample ID aa, r,Oate y,u'pH s S a L n z"t r kx n, ,,+, L i , . t sit..0 N Fr�� _:.'„w�♦;5.M-+.� _'__�4& " �� AI(Salanity,, p)carboDRte� ,:CdrbRna{e�".� , HYd[o"Kicje � i-,�. 4: � , x , <,,, .,a ..Y.n.: v«....- ..a r. ..�., ... ,,.a.......,, ...:e. ,......«s. ti� ....._ex;, .�..:,i,ue...._....r...i_,: n.....w1 MW-1 10/05/01 7.44 408 408 <1 <1 47.3 1.4 1020 8 0.01 11/09/01 NA NA NA NA NA NA NA NA NA NA MW-2 10/05/01 NA NA NA NA NA NA NA NA NA NA 11/09/01 7.28 463 463 <1 <1 41.8 1.5 900 4.8 <0.005 MW-3 10/05/01 7.58 451 451 <1 <1 45.5 1.5 1160 5.5 0.058 11/09/01 NA NA NA NA NA NA NA NA NA NA Pond Water 05/26/99 7.6 NA NA <5 NA 59 0.76 320 9.8 <0.10 12/20/99 8.3 470 470 <5 <5 66 0.89 1500 17 <0.20 02/28/00 8.2 280 280 <5 <5 78 0.93 2800 0.91 0.79 04/05/00 8.2 290 290 <5 <5 77 0.98 2700 N/A N/A 11/09/01 8.36 274 238 36 <1 80.9 1.70 2400 1.3 0.019 Standaeleili_:.,Ls">`,. �_`.,t` �. +hosed Al, s,. , . .: s _,.�nRstd �.:.,f nostd nostd i , 251):,�^. ,_ 2 0,,,�, y 250 10,, .,,}1 iiitqallaiE iiiakKiiiLE'tL,m.iP"..L..1.i._P,' '. Notes: NA=Not Analyzed A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard All values reported in milligrams per liter(mg/L) Page 3 of 3 • • TABLE 3 RLP Analytical Results Varra Coal Ash Project Weld County,Colorado CGRS No. 1-135-2755 .c .i ' , f 5tC--` r.. . ,�.._. P,t ,r .r Sam IetID - P JAI;a s H t RI' Sb bs 1, 9a tr Be : d B,( I,' tin rt Ca�# fr Cr Coi teui51 Yee s�t �bt k-Lt, f�< 5 1� ( I Y t f l S.Y I • .17 1 f 3 AM'S , YIY c. t t V{ rf 1 f Y 4 (S `t a Y S J.�(q( Y 13f�9'YS Date• ) 1 � [ t 1 '1.i.. [ Y ec. 1 t u,r 3 £v 1 vt t 'eMK %:. y�5, x f..w..ava.tx-o f &t.9a13..._ T I .ff liT�Y �ra,h 9�tS.-F s,�r......d.c. f .In (/ .<rr.�rii f VAlL.�,1�5 z..�ntsS.n i� r Yti},Z...ut ,h�'¢[d, -y" ft r M[ J M 4 �_,+a eia,« �stt.,__�}h*<rr- t,,a- � � __. x..t.�€�tau..,.,.t-K Ash Digest 04/05/00 30000 1.4 9.8 1000 2.7 880 <0.6 60000 16 2.9 23 11000 3.4 25 5300 02/28/00 1 10.5 <0.05 <0.006 <0.003 0.21 <0.004 1.6 <0.005 280 <0.01 <0.01 0.024 <0.01 <0.002 0.54 4.8 02/28/00 la . <0.05 <0.006 <0.003 <0.02 <0.004 <0.10 <0.005 <0.20 <0.01 <0.01 <0.01 <0.01 <0.002 <0.02 <0.1 02/28/00 lb <0.05 <0.006 <0.003 <0.02 <0.004 <0.10 <0.005 0.22 <0.01 <0.01 <0.01 <0.01 <0.002 <0.02 <0.1 70/30 Ash/Soil 03/03/00 2 10.1 <0.05 0.0085 <0.003 0.041 <0.004 1.3 <0.005 290 <0.01 <0.01 <0.01 <0.01 <0.002 0.45 99 Leachate 03/10/00 4 9.3 <0.05 <0.006 <0.003 0.28 <0.004 2.5 <0.005 210 <0.01 <0.01 <0.01 <0.01 <0.002 0.25 320 03/10/00 4a 9.3 <0.05 <0.006 <0.003 0.24 <0.004 2.3 <0.005 200 <0.01 <0.01 <0.01 <0.01 <0.002 0.23 310 03/27/00 8 8.5 0.081 <0.006 <0.003 0.11 0.0043 4.1 _<0.005 340 <0.01 <0.01 <0.01 <0.01 <0.002 0.21 290 06/21/00 29 8.3 <0.05 <0.003 <0.003 0.083 <0.004 4.2 <0.005 330 <0.01 <0.01 <0.01 <0.1 <0.002 0.12 310 05/26/99 7.6 2.60 <0.006 <0.1 0.09 <0.004 0.21 <0.005 110 <0.01 <0.01 <0.01 1.80 0.052 0.20 53 12/20/99 8.3 <0.05 <0.006 <0.003 0.032 <0.004 0.44 <0.005 210 <0.01 <0.01 <0.01 <0.006 <0.002 0.057 290 Pond Water 02/28/00 8.2 <0.05 <0.003 <0.003 <0.02 <0.004 0.66 <0.005 170 <0.01 <0.01 <0.01 <0.01 <0.002 0.059 450 04/05/00 8.2 0.056 <0.003 <0.003 0.020 <0.004 0.62 <0.005 180 <0.01 <0.01 <0.01 <0.01 <0.002 0.060 440 n 006 af0 050" X 2 0 t 6 004:+0 75/S'O.w 0 oOS' n6 std° O i oo;1,0 050 20/1`0 030/5'`0'.p.0 05o'�t2 50 no stilt Standardst ys, � ' r< < t tiP..._: .`.(A..�.[ `°P.`f. _ =_..a_.2Y;.r. .`P. -�s,tiS:. ...�. !9t . l�..,,_ Eat � r '4 t.� , 1 < tf 4r f '� ,� 1R}. � ( o II/dret Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard la-QA sample blank(deionized water) 1 b-blank with fluorescein 4a- blind duplicate All values reported in milligrams per liter(mg/L)except values for Ash Digest which are reported in milligrams per kilogram(mg/Kg) Page 1 of 3 Table 3 RLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 ▪ iss^:, tk CK - tom, $am le'. 4 its aY{! i +5 t F s 5 tt . .+e k't� `Y 't r.yn-.t Samp[eIDgf,;� { p PV pfi'f< iMn ,.�}Jlo , } 4Ni t, $ f' - Kr :«Sella.. � g .' Natt `^�TF, r�"Tf "'t V t`zrra ✓aillsastAagia.._;a1:"'.rte tP D5t c,cri ,.,.'u.et I:,.fRiz.:[>.t...w t`;us1l. }ter,-0„', �..�nt_tor.'°.. fif's xa 1S ":'.ry''.S"iri' F.1Hni .:iat.411 s m4._*EOS _nelails r_r.a t sit'. e': t rs_'. A xtKsli�a,li'mQQx'_tSph,;,`.Y, LxF.-. >tii",`t1 Ash Digest 04/05/00 69 5.8 10 710 1100 6.6 <1 3000 1300 <2 56 34 0.14 8.6 02/28/00 1 10.5 <0.005 0.470 <0.004 <0.05 25 0.030 <0.01 570 <0.01 <0.002 <0.01 0.021 0.00035 0.0036 02/28/00 la <0.005 <0.01 <0.004 <0.05 <5 <0.005 <0.01 <1 <0.01 <0.002 <0.01 <0.02 <0.0002 <0.0009 02/28/00 lb <0.005 <0.01 <0.004 <0.05 <5 <0.005 <0.01 <1 <0.01 <0.002 <0.01 0.02 <0.0002 <0.0009 70/30 Ash/Soil 03/03/00 2 10.1 <0.005 0.17 <0.004 <0.05 24 <0.005 <0.01 460 <0.01 <0.002 <0.01 <0.02 <0.0002 0.011 Leachate 03/10/00 4 9.3 0.030 0.11 <0.004 <0.05 20 0.02 <0.01 400 <0.01 <0.002 0.012 <0.02 0.00024 0.021 03/10/00 4a 9.3 0.029 0.097 <0.004 <0.05 18 <0.02 <0.01 410 <0.01 <0.002 <0.01 <0.02 0.00021 0.022 03/27/00 8 8.5 0.057 0.11 <0.04 <0.05 16 <0.005 <0.01 500 <0.01 <0.002 0.011 <0.02 <0.0002 0.023 06/21/00 29 8.3 <0.005 0.062 <0.04 0.014 13 0.0081 <0.01 470 <0.01 <0.001 <0.01 0.039 <0.0002 0.040 05/26/99 7.6 0.58 <0.01 <0.004 NA <5 <.1 <0.01 120 0.078 <0.002 <0.01 <0.02 0.00022 NA Pond Water 12/20/99 8.3 <0.005 NA <0.004 0.19 6.4 <.01 <0.01 300 NA <0.002 <0.01 <0.02 <0.0002 NA 02/28/00 8.2 <0.005 <0.01 <0.004 <0.05 9.3 <0.005 <0.01 410 <0.01 <0.002 <0.01 <0.02 <0:0002 0.041 04/05/00 8.2 <0.005 <0.01 <0.04 0.09 10.0 <0.005 <0.01 460 <0.01 <0.002 <0.01 <0.02 <0.0002 0.047 po`std ,020(6 rm'std it<ozrii"d: 0037062 OO�Q;ino std'no"stdl '0002 h010` ,20tt002<x'f,rn std\ SfandafdSFt,(r rf l I Zvi C .v S L I .» s.� F Sz ..>ti. .il otJ.';} G�X'i 2tA : ..A'w,. ; s.._.v........,x $..;... . S. ` 7i cs�.�.. ..il.,r� vn .�taP771...>; :c?P. .. 1 ..s d c P �3P � ....1. Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard la-QA sample blank(delonized water) lb-blank with fluorescein 4a- blind duplicate All values reported in milligrams per liter(mg/L)except values for Ash Digest which are reported in milligrams per kilogram(mg/Kg) • Page 2 of 3 f _ ! TABLE 3 RLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 (_, tY t+sr =i },�� ' % r r =k= x r Total jrr, Alkalinity as` Alkallnit as{ Aikgllnity as'"r - — Tzs„,; n - . —ba P7eJDA, fi' t Dae z.�:PrV rpB o -.r r vi I '� w Y ,ii. rn c4.JCiilOride tiluorae• rSulfa'te Nitrate='TNittrite: §f4_.,114,f?i..:: otii; k. .:_.a?<fu'.._?�:'w_i. iigS„.Alkalarl(tV. , Blcarbonat_9 3Car*opat0{. jiydrpx{de ,`;?<di,.31'E g� ,er.<iSa�.nts' a s+k;i:re ...°.:.«z., Ash Digest 04/05/00 N/A N/A . N/A N/A 120 93 3100 N/A N/A 02/28/00 1 10.5 220 <5 160 <5 160 1.5 1500 . 2.8 5.4 _ 02/28/00 la <5 <5 <5 <5 <1 <0.1 <1 <0.1 <0.1 02/28/00 lb <5 <5 <5 <5 6.6 <0.1 13 <0.1 <0.1 70/30 Ash/Soil 03/03/00 2 9.3 100 54 46 <5 110 0.71 2000 1.6 0.132 Leachate 03/10/00 4 9.3 210 140 72 <5 95 1.3 2500 <0.2 0.32 03/10/00 4a 9.3 210 140 72 <5 94 1.2 2500 <0.2 0.30 03/26/00 8 8.5 150 140 10 <5 91 1.3 2600 <0.3 <0.3 06/21/00 29 8.3 160 160 <5 <5 92 1.3 3100 <0.2 <0.2 05/26/99 7.6 NA NA <5 NA 59 0.76 320 9.8 <0.10 Pond Water 12/20/99 8.3 470 470 <5 <5 66 0.89 1500 17 <0.20 02/28/00 8.2 280 280 <5 <5 78 0.93 2800 0.91 0.79 04/05/00 8.2 290 290 <5 <5 77 0.98 2700 N/A N/A �: y v= ,y i rw i{ �. . 'i' tr= i °r1'np}sliiniNg,d4 20!r;?, $'r.;';�2 o. 't r250uk r %r10s1.'wit°.1t'i�l: "JtahC)af(f.Sl.F5.'.n6. ,-rTa.,e ., .-, ;a,. .:_ ....v.,u.;. �1Ao�Std.,-_.�: J..nostdl+ate �.,cunO,Std, ,,,. �a.... ?.MY11:.5i.rilV bt4i' AS nilsZr+v+i_i...£ Meat Notes: NA=Not Analyzed PV=Pore Volume A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard 1 a-QA sample blank lb-blank with fluorescein 4a- blind duplicate All values reported in milligrams per liter(mg/L)except values for Ash Digest which are reported in milligrams per kilogram(mg/Kg) Page 3 of 3 APPENDICIES APPENDIX A GRAIN SIZE ANALYSIS/SLUG TEST DATA • SIEVE ANALYSIS REPORT Job No. 00.010T Date 02/18/00 Client CGRS Contractor _ Project Varra Coal Ash 2755AA Source Delivered to Lab it REPORT OF TESTS OF Gravel with Sand Sieve Percent Size or.No. Passing Remarks: 2-inch 100 1 1/2-inch 91 , 1-inch 87 3/4-inch 82 1/2-inch 69 3/8-inch 62 No. 4 53 No. 8 44 No. 16 33 No. 30 21 No.50 12 No. 100 7 No. 200 5 SMITH GEOTECHNICAL FORT COLLINS, COLORADO Grain Size Distribution A GRAVEL 4 SAND PI 4. SILT I•41 CLAY 0 3/4 3/S 4 8 16 30 50 I00 200 100 • 90 80 70 j60 W 50 U a 40 30 20 I I 100 10 1 0.1 0.01 0.001 Particle Diameter, mm • • Particle Size Distribution Report . e m e C 5 a ° a . S F.' an z S in ' 80 70 W 60 Z LL Z 50 , U !r al 40 i y _ �, 30 • , • , , 20 t , , , , T f • 10 0 , , 500 100 10 1 0.1 GRAIN SIZE- mm °07 0.001 I %C00B0BLES I %G4RA0VEL I %SAND %SILT 53.4 I 4.6 I %CLAY I . SIEVE PERCENT SPEC.` PASS? Soil Description SIZE FINER PERCENT (X=NO) 1.5 in. 100.0 1 in. 97.3 ' .75 in. 94.6 .5 in. 77.8 r .375 in. 71.0 Atterhero Limits #4 58.0 PL= LL= PI= #8 46.0 #16 32.4 Coefficients #30 21.9 - O85= 15.0 D60= 5.30 D50= 2.96 #50 13.9 D30= 1.03 D15= 0.352 Dig= 0.116 #100 00 14.6 3.2 Cu= 45.77 Cc= 1.71 Classification , USCS= AASHTO= Remarks * (no specification provided) Sample No.: 1 - Source of Sample: MW-1 Date: 10/19/01 Location: Elev./Depth: 4'-6' SMITHClient: CGRS A' Project: Varra Coal Ash GEOTECHN CAL Project No: 00.010T Figure CGRS, INC slug/bail test analysis Date:09.11.2001 Page 1 1301 Academy Court BOUWER-RICE's method Project:Varra Coal Ash Project Fort Collins,Colorado ph.800.288.2657 Evaluated by:J.ADAMS Slug Test No. Test conducted on:NOVEMBER 9th,2001 MW-3 t[min] 0 0 0 1 1. 1 1 1 2 2 10ec ° - - - - - - ° ° ° 0 0 • 104 0 102 0 MW-3 SLUG OUT Hydraulic conductivity[ft/min]: 1.42 x 10.2 ao.ys 4/d'a`I Actual B=9.42 feet B is set to 5.42 feet as well is completed 4'into shale R-0.26' r-0.083' L-5.42' Static water level set to zero for analysis r- ' CGRS, INC slug/bail test analysis Date:09.11.2001 Page 2 1301 Academy Court BOUWER-RICE's method Project:Varra Coal Ash Project Fort Collins,Colorado ph.8c0.288.2657 Evaluated by:J.ADAMS Slug Test No. Test conducted on:NOVEMBER 9th,2001 MW-3 MW-3 SLUG OUT Static water level:0.00 ft below datum Pumping test duration Water level Drawdown [min] [ft] - [ft] _ 1 0.00 0.38 0.38 2 0.05 0.38 .0.38 • 3 0.07 0.36 0.36 4 0.08 0.24 0.24 5 0.10 0.14 0.14 6 0.13 0.09 0.09 7 0.19 0.13 0.13 8 0.26 0.10 0.10 9 0.35 0.08 0.08 10 0.44 0.07 0.07 11 0.66 0.04 0.04 12 0.93 0.02 0.02 13 1.10 0.00 0.00 • CGRSe INC slug/bail test analysis Date:09.11.2001 Page 1 1301 Academy Court BOUWER-RICE's method Project:Varra Coal Ash Project Fort Collins,Colorado ph.800.288.2657 • Evaluated by:J.Adams Slug Test No. Test conducted on: November 9,2001 MW-1 t[min] 0. 0 0 0 0 0 0 0 0 0 • 100 - - - - - 0 10-1 10-2 o MW-1 Slug Out Hydraulic conductivity[ft/min]: 1.41 x 10-1 aZ 03.0e-1 ct•ides P L-5 feet b-5.80 feet R-0.26' r-0.083' Porosity-0.25 CGRS, INC slug/bail test analysis Date: 09.11.2001 Page 2 1301 Academy Court BOUWER-RICE's method Project:Varra Coal Ash Project Fort Collins,Colorado ph.800.2882657 Evaluated by:J.Adams r Slug Test No. Test conducted on:November 9,2001 MW-1 MW-1 Slug Out Static water level:0.00 ft below datum Pumping test duration Water level Drawdown [min] [ft] [ft] 1 0.00 0.75 0/5 2 • 0.04 0.60 0.60 3 0.05 0.57 0.57 4 0.07 0.16 0.16 5 0.08 0.04 0.04 • I APPENDIX B SOIL BORING LOGS I BOREHOLE NUMBER FIELD BOREHOLE LOG - MW-1 , PROJECT NUMBER: 1.135.2755aa TOTAL DEPTH: 11' PROJECT NAME: Verra Companies,Inc. TOP OF RISER: 3' (with cap removed) LOCATION: Longmont,Colorado DRILLING CO: Site Services,Inc. STATIC WATER LEVEL(BGS) DRILLING METHOD: HSA Time 11:02 1 DRILLER: Tony Date 9/26/01 • LOGGED BY: Adams Water level 4.83' START: 9/26/01 COMPLETED: 9126/01 Casing Depth 8'bgs z, To d .0 E Z o a w d Notes o DEPTH DESCRIPTION (ppm) LITHOLOGY WELL CONSTRUCTION E E o E E Fa `cAl RISER3' 4'x4'x3' Upright Well Protector FILL:silt with sand and clay, U° OC_ . some gravel,brown,moist, ..r<\\cN. Lockable C ' wet at 3 feet. �Oo�oC Cap Protective).42>n< l ng DOC Concrete „c>.S Seal,2' niKK Sch.40 PVC Riser SB 1 42 24 18 GRAVEL WITH SAND: c brown,waterbearing,very 0 5 dense. W)GW-S Bentonite i( 000 Pellets 00. . O... O 10/20 Silica jO . Sand filter O 0 30n n SB 2 50+ 9 9 SHALE:grey,blocky,very —— _ 2'Schedule 5— dense, — — — 40 PVC 10 —— — Screen#10 _ _ Slot i End of Boring. I FIELD BOREHOLE LOG BOREHOLE c!:G;Ps NUMBS MW-2 PROJECT NUMBER: 1-135-2755aa TOTAL DEPTH: 13' PROJECT NAME: Verra Companies,Inc. TOP OF RISER: 3' (with cap removed) LOCATION: Longmont,Colorado DRILLING CO: Site Services,Inc. STATIC WATER LEVEL(BGS) DRILLING METHOD: HSA Time 11:07 DRILLER: Tony Date 9/26/01 j LOGGED BY: Adams Water level 8.73' START: 9126101 COMPLETED: 9126/01 Casing Depth 13'bgs d Z Z o a m 0 : m Notes c'o a m DEPTH DESCRIPTION (ppm) LITHOLOGY WELL CONSTRUCTION E E 3 E E m m o co CO, m CO CO RISER 3' 4'x 4'x 3' Upright Well Protector - FILL:silt with sand and clay, :K\0. : rig brown,moist,dense. O Q Lockable Qa DEC Cap �••��< Protective Qa K<\C Casing :b3: Concrete cQ°PoC Seal,o SB 1 16 � vy< PVC Riser TYPAC 5 >. ��• Bentonite CoC DK\C Pellets GRAVEL WITH SAND: brown,well graded, '• - waterbearing,very dense. 0 0 (GS-SW) ' '0'•0'. SB 2 50+ t O•• 10/20 Silica Sand filter — 0 ,10 0 . 0. o° o 2'Schedule --0it.l 40 PVC — SHALE:grey,very dense, —— — Screen#10 moist. -------- _ Slot End of Boring. 1 FIELD BOREHOLE LOG BOREHOLE NUMBER OG - - MW-3 ' PROJECT NUMBER: 1.135.2755aa TOTAL DEPTH: 15' PROJECT NAME: Verra Companies,Inc. TOP OF RISER: 3' (with cap removed) - LOCATION: Longmont,Colorado • DRILLING CO: Site Services,Inc. STATIC WATER LEVEL(BGS) DRILLING METHOD: HSA Time 11:08 - DRILLER Tony Date 9/26/01 ' LOGGED BY: Adams Water level 7.77' START: 9/26101 COMPLETED: 9126/01 Casing Depth 15'bgs I z 2 0 a E :? 0 Notes d o d t c2 DEPTH DESCRIPTION (ppm) LITHOLOGY WELL CONSTRUCTION E E E E 3 N E E 0) 0) CO co CD RISER 3' 4'x4'x3' 4'x 3' Upright Well Protector FILL:silt with sand and clay, (S 'p brown,moist. O��o� Lockable rn \ .C Protective CaP \<>/›.3,—. ° cxC Casing � ... Concrete �O�D Seal,2' ° O� Sch.40 N. PVC Riser YKK CS 1 NA 60 18 GRAVEL WITH SAND: J: •V Bentonite •brown,well graded,moist to ‘).:P• id Pellets waterbearing.(GW-SW) O o a o. 0:.:0:. //7- 7/ O O 10120 Silica / / 10 O..�0 Sand filter CS 2 NA = - - / SHALE:grey,moist,very — — — _ dense. — — j Schedule — 40 PVC 1 SB 3 36 6 6 —7---- — Soten#10 -' 15 4 %1, End of Boring. / APPENDIX C ANALYTICAL DATA I _ _ 3 _ _ TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS, INC. Date Received: 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Lab ID Sample ID Sampled III9& mgaa. mq/L mq/L mq/L mg& 2284-1 MW-1 10/05/01 <0.02 <0.006 <0.005 0.022 <0.003 0.334 <0.001 139 2284-2 MW-3 10/05/01 <0.02 <0.006 <0.005 0.037 <0.003 0.348 <0.001 152 Metals Method: EPA-6010B >e- TECHNOLOGY LABORATORY, INC. Page 1 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK • 1012 Centre Avenue Fort Collins, Colorado 80526 • (970) 490-1414 • DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS,INC. Date Received: 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755M • Date Chromium Cobalt Copper Iron Lead Lithium Magnesium Manganese Lab ID Sample ID Sampled mgL mq/L mg/L n≥gL mg/1_ im/1_ 2284-1 MW-1 10/05/01 <0.004 0.002 <0.003. <0.007 <0.003 0.050 179 0.045 2284-2 MW-3 10/05/01 <0.004 0.004 <0.003 <0.007 <0.003 0.053 176 1.73 Metals Method: EPA-6010B a TECHNOLOGY LABORATORY, INC. Page 2 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS, INC. Date Received:' 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755M Date Molybdenum Nickel Phosphorus Potassium Selenium Silver Sodium Titanium Lab ID Sample ID Sampled mq/L mq/L DAL mq/L mg/1. mq/L mq/L 2284-1 MW-1 10/05/01 0.045 <0.005 0.198 5.35 0.029 <0.002 174 <0.01 2284-2 MW-3 10/05/01 0.096 <0.005 0.169 8.77 0.027 <0.002 190 <0.01 Metals Method: EPA-6010B 4: TECHNOLOGY LABORATORY,INC. Page 3 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT • CGRS,INC. Date Received: 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Thallium Vanadium Zinc Mercury Uranium Lab ID Sample ID Sampled mq/L r≥>gL mulL mg/L 2284-1 MW-1 10/05/01 <0.005 <0.003 <0.002 <0.0002 <0.015 2284-2 MW-3 10/05/01 <0.005 <0.003 <0.002 <0.0002 0.019 Metals Method: EPA-6010B eetaa-- TECHNOLOGY LABORATORY, INC. Page 4 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 WATER ANALYSIS REPORT CGRS,INC. Date Received: 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date pH Total Alkalanity Bicarbonate Carbonate Hydroxide Lab ID Sample ID Sampled units mq/L mg/L mq/L mq/L 2284-1 MW-1 10/05/01 7.44 408 408 <1 <1 2284-2 MW-3 10/05/01 7.58 451 451 <1 <1 pH Method: EPA-150.1 Bicarbonate Method: EPA-310.2 Carbonate Method: EPA-310.2 Hydroxide Method: EPA-310.2 /e TECHNOLOGY LABORATORY, INC. Page 1 of 2 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFIf ICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 WATER ANALYSIS REPORT CGRS, INC. Date Received: 10/05/01 P.O. Box 1489 Date Analyzed: 10/10/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Chloride Fluoride Sulfate Nitrate-N Nitrite-N Lab ID Sample ID Sampled mgL mq/L mgL mg& 2284-1 MW-1 10/05/01 47.3 1.4 1,020 8.0 0.010 2284-2 MW-3 10/05/01 45.5 1.5 1,160 5.5 0.058 Chloride Method: EPA-325.3 Fluoride Method: EPA-340.3 Sulfate Method: EPA-375.4 Nitrate-N Method: EPA-353.3 Nitrite-N Method: EPA-354.1 TECHNOLOGY LABORATORY, INC. Page 2 of 2 TECHNOLOGY LABORATORY, INC. W.O. NUMBER 1012 CENTRE AVENUE CHAIN-OF-CUSTODY REPORT FORT COLLINS, CO 80526 (970) 490-1414 . COMPANY NAME ANALYSIS REQUESTED OTHER CC,a5 riVc ' PROJECT MANAGER ` <6 2 O 3 re N cJ OIL /4/77Q'7 i.✓ 2 W „O. -J 7- F O J,� tew Z a U W -I -- O U C PROJECT NUMBER dp Ia., = = r^. N O 0 F- J a W F Q I� J etc( 2 0 a. W a co 4 o F- y F- Q _J Z = = Q PROJECT LOCATION OR NAME ,� a X I.• -. d = O CO W CO F- Z O LL' a Q. D. IA It NU 4 0674E pao,EC� En O F aOC 0- .Qa U OU n\ a U F. -- Z - Qt.. SAMPL S IGNAT�1Rff w o W� m O F' p O a a o a F OF d 2 111 N Z SAMPLE ID DATE/TIME SAMPLED ¢ al ¢ V. ynw-I rolt/oi• W `I x pit w- 3 t4 /5/0/ vi 1 _X _ • PAGE_ OF_L_ GENERAL COMMENTS TURNAROUND TIME RELINQUISHED BY: e I— DATE:44/s/O/ RECEIVED BY: N.NORMAL COMPANY: ) TIME: COMPANY:.CRUSH RELINQUISHED BY: DATE: RECEIVED BY_/�j V� n a DOTHER COMPANY: TIME: COMPANY: Tit., Co 1 0 /S/J1 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 WATER ANALYSIS REPORT CGRS,INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date pH Total Alkalanity Bicarbonate Carbonate Hydroxide Lab ID Sample ID Sampled units mg/1_ mo/L 2440-1 MW-2 11/09/01 7.28 463 463 <1 <1 2440-2 POND 11/09/01 8.36 274 238 36 <1 pH Method: EPA-150.1 Bicarbonate Method: EPA-310.2 Carbonate Method: EPA-310.2 Hydroxide Method: EPA-310.2 a TECHNOLOGY LABORATORY, INC. Page 1 of 2 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 WATER ANALYSIS REPORT • CGRS, INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755M Date Chloride Fluoride Sulfate Nitrate-N Nitrite-N Lab ID Sample ID Sampled mg/L mg/L Ir≥9L mq/L mg/I 2440-1 MW-2 11/09/01 41.8 1.5 900 4.8 <0.005 2440-2 POND 11/09/01 80.9 1.7 2,400 1.3 0.019 Chloride Method: EPA-325.3 Fluoride Method: EPA-340.3 Sulfate Method: EPA-375.4 Nitrate-N Method: EPA-353.3 Nitrite-N Method: EPA-354.1 ca TECHNOLOGY LABORATORY, INC. Page 2 of 2 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 . DISSOLVED TRACE METALS . WATER ANALYSIS REPORT CGRS, INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755M Date Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Lab ID Sample ID Sampled malL mil mq/L mq/L Ind ma/L man_ Eel 2440-1 MW-2 11/09/01 <0.02 <0.006 <0.005 0.041 <0.003 0.384 <0.001 157 2440-2 Pond 11/09/01 <0.02 <0.006 <0.005 0.025 <0.003 0.880 <0.001 125 Metals Method: EPA-6010B _it TECHNOLOGY LABORATORY, INC. Page 1 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS, INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Chromium Cobalt Copper Iron Lead Lithium Magnesium Manganese Lab ID Sample ID Sampled mq/L BAIL I≥≥9L rn L mq/L 2440-1 MW-2 11/09/01 <0.004 <0.002 <0.003 <0.007 <0.003 0.045 184 0.218 2440-2 POND 11/09/01 <0.004 <0.002 <0.003 <0.007 <0.003 . 0.070 444 0.017 Metals Method: EPA-60106 La TECHNOLOGY LABORATORY, INC. Page 2 of 4 _ - I __ _ I TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS,INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Molybdenum Nickel Phosphorus Potassium Selenium Silver Sodium Titanium Lab ID Sample ID Sampled mq/L mq/L mq/L mq/L 2440-1 MW-2 11/09/01 0.040 <0.005 0.236 6.22 0.094 <0.002 181 <0.01 2440-2 POND 11/09/01 0.075 <0.005 0.161 11.9 0.045 <0.002 495 <0.01 Metals Method: EPA-6010B Ye, . TECHNOLOGY LABORATORY, INC. Page 3 of 4 TECHNOLOGY LABORATORY, INC. CENTRE PROFESSIONAL OFFICE PARK 1012 Centre Avenue Fort Collins, Colorado 80526 (970) 490-1414 DISSOLVED TRACE METALS WATER ANALYSIS REPORT CGRS,INC. Date Received: 11/09/01 P.O. Box 1489 Date Analyzed: 11/15/01 Fort Collins, Colorado 80522 Project No.: 2755AA Date Thallium Vanadium Zinc Mercury Uranium Lab ID Sample ID Sampled I� mg/L mq/L 2440-1 MW-2 11/09/01 <0.005 <0.003 0.114 <0.0002 0.029 2440-2 POND 11/09/01 <0.005 <0.003 0.019 <0.0002 0.043 Metals Method: EPA-6010B • TECHNOLOGY LABORATORY,INC. Page 4 of 4 - - ----- - - - ---- IIM- TECHNOLOGY LABORATORY, INC. 1012CENTREAVENUE CHAIN-OF-CUSTODY REPORT FORT COLLINS, CO 80526 (970) 490-1414 COMPANY NAME/� < ANALYSIS REQUESTED OTHER cv?5 , -Y i c- J • M¢ u) PROJECT MANAGER '¢a E, Fa- p 2 Cr. 4 CMvs S VEC W Z co 0 W O O U PROJECT NUMBER AA O p Ia. m r N U N - Z '-I 1 W I- Z = I T 5.5-AA 03 Q y a a J F.. z >a >a PROJECT LOCATION OR NAME coN S O D. m O = a ¢ O N F W }- ~ a C7 ~ ~ IL) LL ~ 2 d 2 ('3 N ? 1 . . J O Z 1/l4F2Y1 Cosa<�1 f}s 6f Rod G7 w ¢ a = O. o - o a v In J Z a - O o SAMPLERS SIG ATURE D▪ ui m mocv a. W 0 N D. O F, N Z4 0 Ill * SAMPLE ID DATE/TIME SAMPLED ¢ W yV1w Jl/9/o ! X4:3O +4 i - - oN17 09: 35 w I - _ PAGE OF GENERAL COMMENTS(( 'L��TURNAROUNDTIME RELINQUISHED BY: J I / DATE: !`/y/0/ REC Y• L IC{NORMAI COMPANY: / C- . TIME: / :if mil COMPANY: � a • O RUSH RELINQUISHED BY: ))) DATE: RECEIVED BY: O OTHER COMPANY: TIME: COMPANY: APPENDIX D STEADY STATE MODEL RESULTS Varra Coal Ash Project Selenium Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity(sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.023 Enter hydraulic conductivity[cm/s] 0.026 Enter first-order degradation constant 0 Enter distance (x)to point of compliance[ft] 50 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane[ft] 6 Enter source area concentration (mg/L) 0.0136 ax=longitudinal dispersivity[cm]=0.10x= 152.4 cm ay=transverse dispersivity[cm]=a/3 50.8 cm ai=vertical dispersivity[cm]=ad20 7.62 cm Ground water velocity[cm/s]= 0.002216 cm/s 1st error function 2.738613 2nd error fuction 0.424264 erf(1))=error function of evaluated for 1st function = 0.999964 erf(17)=error function of evaluated for 2nd function = 0.452573 Steady State Concentration C(x) at Point of Compliance= 6.1548 ac/L C(x) = Coexpj 2ax[1=.,I1+4 uaxJ}I erf4 SaYx�JlerfL4 Sax7xJl r4n2 erf(t)) = 1- expl J l 7c C(x)=dissolved phase concentration along centerline (x,y=0, z=0) of dissolved plume[g/cm3-H2O] C s„UrCa =dissolved phase concentration in dissolved plume source area [g/cm3-H2O] x=distance along center line from down-gradient edge of dissolved plume source (cm) ax= longitudinal dispersivity[cm]=0.10x A,=first order degradation constant[d1] u=Kl@ ground water velocity.[cm/d] S„,,=source width (perpendicular to flow in the horizonal plane[cm] Sa=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]=a,/3 a,=vertical dispersivity[cm]= a,/20 erf(n)=error function of evaluated for value 11 Revised on March 18,1997 Page 1 Varra Coal Ash Project Selenium Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity(sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.023 Enter hydraulic conductivity[cm/s] 0.026 Enter first-order degradation constant 0 • Enter distance (x)to point of compliance[ft] 100 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane [ft] 6 Enter source area concentration (mg/L) 0.0136 ax= longitudinal dispersivity[cm]=0.10x= 304.8 cm ay=transverse dispersivity[cm]=a,/3 101.6 cm ai=vertical dispersivity[cm]=a,120 15.24 cm Ground water velocity[cm/s]= 0.002215 cm/s 1st error function 1.369306 2nd errorfuction 0.212132 erf(n)=error function of evaluated for 1st function = 0.952959 erf(11)=error function of evaluated for 2nd function = 0.235981 Steady State Concentration (C(x) at Point l of Compliance= r 3.0584 }rq/L C(x) = Coexpj X Ll—,I1+4�,a"11rerfL S�JJ�erfl S` 1J 2a: Y u J1l 4 a x f[4 a=x n2 erf(rj) = Il- expl4 J • C(x)=dissolved phase concentration along centerline(x,y=0, z=0) of dissolved plume[g/cm3-H2O] C spume =dissolved phase concentration in dissolved plume source area[g/cm3-H2O] x= distance along center line from down-gradient edge of dissolved plume source (cm) a,= longitudinal dispersivity[cm]=0.10x X=first order degradation constant[d1] u=KM ground water velocity[cm/d] S.„=source width (perpendicular to flow in the horizonal plane[cm] Sd=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]=a,/3 a2=vertical dispersivity[cm]= aj20 erf(q)=error function of evaluated for value n Revised on March 18,1997 ' Page 1 Varra Coal Ash Project Boron Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity (sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.023 Enter hydraulic conductivity[cm/s] 0.026 Enter first-order degradation constant 0 • Enter distance (x)to point of compliance[ft] 100 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane [ft] 6 Enter source area concentration (mg/L) 2.74 a,= longitudinal dispersivity[cm]=0.10x= 304.8 cm ay=transverse dispersivity[cm]=a,/3 101.6 cm ai=vertical dispersivity[cm]= a,/20 15.24 cm Ground water velocity[cm/s]= 0.002215 cm/s 1st error function 1.369306 2nd errorfuction 0.212132 erf(11)=error function of evaluated for 1st function = 0.952959 erf(11)=error function of evaluated for 2nd function = 0.235981 Steady State Concentration(C(x) at Point l of Complia nce= r 616.17 µq/L C(x) = Co expj 2ax11—,11+4 ux a [44-ci—swyx lieerf[4 Sai 2 erf(7)) = I1- exp( ) C (x)=dissolved phase concentration along centerline(x,y=0,z=0) of dissolved plume[g/cm3-H2O] C source =dissolved phase concentration in dissolved plume source area[g/cm3-H2O] x=distance along center line from down-gradient edge of dissolved plume source (cm) az=longitudinal dispersivity[cm]=0.10x X=first order degradation constant[d'] u=Klu ground water velocity[cm/d] S„,=source width (perpendicular to flow in the horizonal plane[cm] Sd=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]=a,/3 ai=vertical dispersivity[cm]=a,/20 erf(rt)=error function of evaluated for value 11 Revised on March 18,1997 Page 1 Varra Coal Ash Project Boron Calculation This spread sheet calculates the steady state concentration at a point of compliance well located at a distance (x) down-gradient of the source area. The calculations and methods are describe in ASTM-38 RBCA. Spread Sheet Calculations Enter Enter Porosity(sand 0.3, silt 0.35, clay 0.4) 0.27 Enter hydraulic gradient[ft/ft] 0.023 Enter hydraulic conductivity[cm/s] 0.026 Enter first-order degradation constant 0 ! _ Enter distance (x)to point of compliance[ft] 50 Enter source width (perpendicular to flow in the horizonal plane) [ft] 100 Enter source width (perpendicular to flow in the vertical plane[ft] 6 Enter source area concentration (mg/L) 2.74 ax=longitudinal dispersivity[cm]=0.10x= 152.4 cm ay=transverse dispersivity[cm]=aa/3 50.8 cm a2=vertical dispersivity[cm]=a/20 7.62 cm Ground water velocity[cm/s]= 0.002215 cm/s 1st error function 2.738613 2nd error fuction 0.424264 erf(n)=error function of evaluated for 1st function = 0.999964 erf(rt)=error function of evaluated for 2nd function = 0.452573 Steady State Concentration rC(x) at Point t of Compliance=r 11 [44a7.-x1) 1240.01 AWL C(x) = Co expj X l_ 1+ S— i I�erfSd 2ax Y u 4 a x J r 2 erf(n) = rl- exp[ 471 J VV n C(x)=dissolved phase concentration along centerline(x,y=0, z=0) of dissolved plume[g/cm3-H2O] C source =dissolved phase concentration in dissolved plume source area[g/cm3-}-12O] x=distance along center line from down-gradient edge of dissolved plume source (cm) ax= longitudinal dispersivity[cm]=0.10x X=first order degradation constant[d"1] u=Kl$ ground water velocity[cm/d] Sw=source width (perpendicular to flow in the horizonal plane [cm] Sd=source width (perpendicular to flow in the vertical plane) [cm] ay=transverse dispersivity[cm]=ax/3 ax=vertical dispersivity[cm]=a/20 erf(n)=error function of evaluated for value n Revised on March 18,1997 , Page 1 APPENDIX E ANALYTICAL PARAMETERS AND METHODS • Summary of Parameters,Sample Containers, Holding Times, and Analytical Methods 'l. p :. Ana7yGaa1 arueter Matte TTo an3 wbC � Fioldrngl'im�(�) `< Alkalinity Water 1-100mlP,G 14 days cool to 4C SM 2320B Chloride Water 1-200m1,P,G 28 days no preservative required EPA 300.0 Fluoride Water 1-500 ml,P 28 days no preservative required EPA 300.0 Sulfate Water 1-200 ml,P 28 days cool to 4C EPA 300.0 Nitrate Nitrite Water 1-100 m1,P,G 48 hours cool to 4C EPA 300.0 1-500 ml P,G Mercury Water 28 days,HNO3 to pHd 245.1/7170 Total Metals(RCRA) Water 125-500 ml nalgene 6 months except Mercury at 28 days. For (Red dot) water,preserved with BNO3,not filtered. 6010/7000 Dissolved Metals(RCRA) 6 months except Mercury at 28 days. Filtered Water 125-500 ml nalgene and preserved is Lab. 6010/7000 Anions/General Chemistry Water 250 ml nalgene 28 days 200 Series Notes: (1)All collected samples to be kept cool(4 degrees C) (2)USEPA Method,SW-846(Revised),1986 I • C.._ , 1 GROUNDWATER MONITORING WORK.PLAN VARRA.COAL ASH BURIAL PROJECT • WELD COUNTY, COLORADO ICGRS NO. 1;135-2755aa i I I • .by F • . . CGRS,INC. 1301 Academy Court Fort Collins, Colorado 80524 800.288.2657 f • E 1 June 6, 2001 . I i CGRS, Inc. • Table of Contents 1.0 INTRODUCTION 1 1.1 Objectives 1 1.2 Background Information 1 2.0 PILOT STUDY 2 2.1 Project Start-up 2 2.2 Hydrology Determinations 2 • 2.3 Soil Borings 3 2.4 Monitoring Well Installation 3 • 2.5 Groundwater Level Measurements and Chemical Analyses 3 • 2.6 Water Quality &Hydrogeologic Monitoring 3 2.7 Aquifer Characterization 5 2.8 Contingency Plan and Abatement 5 3.0 ORGANIZATION AND STAFF ASSIGNMENTS 6 3.1 Project Personnel 6 3.2 Subcontractors 6 4.0 OVERVIEW-QUALITY ASSURANCE/QUALITY CONTROL 6 5.0 REMARKS 7 FIGURES Figure 1 -Site Location Map Figure 2-Registered Well Location Map Figure 3-Area Use and Site Condition Map ATTACHMENTS Attachment A-Methods and Procedures Attachment B -Quality Assurance Project Plan • CGRS,Inc. ( GROUNDWATER MONITORING WORK PLAN VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO CGRS NO. 1-135-2755 1.0 INTRODUCTION This document presents the proposed work scope for the evaluation of coal ash burial in saturated media. This will be accomplished by conducting a pilot field program, which consists of burying 400 tons of coal ash in water table conditions in Weld County, Colorado. Rigorous water quality monitoring is proposed over a one-year period to determine long-term leachability characteristics of coal ash under natural conditions.Quarterly background water quality monitoring at the proposed test area is ongoing and has been conducted over a one-year period. The field investigation will be performed in conjunction with a variety of laboratory studies in order to evaluate potential liabilities or benefits associated with coal ash burial. Specifically,this project addresses issues associated with the reclamation of gravel quarries under saturated conditions. A variety of laboratory experiments were conducted in order to evaluate coal ash leaching potentials.This work is performed under the authorization of Varra Companies. 1.1 Objectives The purpose of this project is to identify potential liabilities with the reclamation of gravel quarries with coal ash and to determine if coal ash meets the criteria for classification as an inert fill. Specific objectives for the Varna Coal Ash Burial Project are to determine: • Leaching characteristics of coal ash with respect to varying water quality conditions;- • l - 0 Permeabilities of various types of coal ash (bottom and fly ash); • Affects of coal ash burial on local hydrology and water quality; • • Hydrogeologic properties of coal ash; and • Physical characteristics of coal ash in saturated media. 1.2 Background Information The study area is an active gravel quarry located in the NW 1/4, Section 31, Township 3 North, Range 68 • West, 6th P.M., Weld County, Colorado (Figure 1). The surficial geology of the area as documented by Colton, 1978, varies between wind blown deposits of clay, silt and sand and sandy to gravelly alluvium, which are Holocene in age. Colluvium consisting of bouldery to pebbly sandy silt and clay may contain and interfinger with alluvium of various ages. The depth to groundwater at the site generally varies between three and ten feet below ground surface (bgs). The inferred groundwater flow direction is to the northeast roughly parallel to the St. Vrain River drainage. The Pierre Shale underlies the unconsolidated alluvial 1 • • CGRS,Inc. i deposits in this area. The depth to bedrock in this area as documented by field observation varies between 15 and 30 feet below ground surface. A United States Geological Survey investigation documented groundwater occurrence and movement near the study area. Underflow calculations in the vicinity of the study area indicate that 600 acre-feet of water passes across a two mile section of the alluvial valley.If the average depth to bedrock varies between 20 and 30 feet below ground surface then the average hydraulic conductivity is calculated to vary between 97 and 147 feet per day. Assuming a hydraulic gradient of 0.0023 feet per foot and a porosity of 0.27, the seepage velocity(actual groundwater flow velocity)is estimated to vary between 0.83 and 1.25 feet per day. Water well records obtained from the Colorado Division of Water Resources indicate that one well may be located within one-quarter mile of the proposed test plot. The registered well owner is Dakolios Construction and the permitted use of the well is industrial. The location of registered yells within a half- mile radius of the proposed test plot are depicted on Figure 2. Field verification of well locations and construction details,if available will be performed prior to project start-up. 2.0 PILOT STUDY 2.1 Project Start-up The project start-up will consist of developing a work plan and a site specific Health and Safety plan. All required permits will be obtained prior to conducting the investigation. Utility companies will be contacted for the location of all underground utilities prior to commencing investigative activities (telephone, sewer, electrical,cable television,natural gas lines, oil and gas pipelines,buried tanks and wells). ( 2.2 Hydrology Determinations • A site-specific investigation will be conducted prior to pilot project. We anticipate that between three and four groundwater monitoring wells will be installed to determine local hydrology and water quality. The investigation at a minimum will determine local groundwater flow direction and rate, soil conditions, porosity and hydraulic conductivity. Groundwater quality will be determined by obtaining water samples from one monitoring well on a quarterly basis until the ash placement is completed. Analytical parameters will be identical to those presented in the column-leaching test. At least two samples will be analyzed prior to the pilot project. The results of the investigation will be presented in a report to all interested parties for approval. It is anticipated that up to ten wells will be installed to monitor variations in local aquifer characteristics as a result of coal ash burial. • I . • CGRS,Inc. • 2.3 Soil Borings Up to ten soil borings will be drilled by hollow stem auger techniques at locations depicted on Figure 3. Soil samples will be collected on five-foot intervals using a split-spoon sampler. Boring logs will be constructed and will include interpretations of soil characteristics, conditions encountered during drilling, sample locations, and any other observations pertinent to the soil boring operation. 2.4 Monitoring Well Installation Soil borings will be converted to two-inch diameter monitoring wells. The wells will be installed and screened from approximately five feet above the groundwater table to the vertical limit of the well. The monitoring wells will be constructed using two-inch diameter, flush threaded; schedule 40 PVC casing and factory slotted screen. Soil boring and groundwater monitoring methods and procedures are presented in Attachment A. 2.5 Groundwater Level Measurements and Chemical Analyses In soil borings completed as groundwater monitoring wells, the ground surface elevation of each boring and/or monitoring well will be surveyed to the nearest 0.01 foot, and referenced to an arbitrary datum if actual elevations cannot be determined. The areal location will be surveyed to the nearest 0.5 feet. Groundwater level measurements will be taken in the borings and wells by using an electrical water level indicator.This data will be used to construct a groundwater contour map,.which will assist in characterizing groundwater flow direction and the hydraulic gradient of the water table surface. The hydraulic conductivity will be estimated by performing slug and/or aquifer testing.Prior to initiating the pilot project, groundwater quality samples will be obtained and analyzed for-pH, TSS, TDS, and other relevant parameters identified in the laboratory leaching tests. Samples will be obtained from no less than- one up-gradient and two down gradient wells.The anticipated locations of themonitoring wells are depicted E:. on Figure 3.Typical monitoring well construction details are described in Attachment A. 2.6 Water Quality &Hydrogeologic Monitoring The effects on groundwater quality and hydrology as a result of coal ash burial will be evaluated by placing roughly 400 tons of coal ash within a trench at the location shown on Figure 3.The coal ash will be placed so that the water table intersects the coal ash and that any fluctuation of the water table will be within the coal ash bed. The coal ash will be buried in a trench measuring 10 feet in width, 100 feet in length and roughly 10 feet in depth. In order to evaluate hydraulic characteristics of bottom ash and fly ash, one-half of the trench will be filled with fly ash. A native soil divider will be left and the other half of the trench will be filled with bottom ash and fly ash. Bottom ash will be placed in the lower one-half of the saturated portion of the trench and fly ash 3 CGRS, Inc. 1 will be placed to one foot below ground surface. Approximately one foot of native soil will be place over the entire trench. Variations in water quality will be verified through quarterly water quality monitoring for analytical parameters identified in the laboratory quality assurance plan (Appendix B).The results of the analyses will be submitted to the Colorado Department of Public•Health and Environment, Division of Minerals and Geology and Weld County Health Department. Within one week of coal ash burial water quality samples will be obtained from all monitoring wells. Water quality samples will be obtained on a weekly basis for • one month, then monthly till the end of the first quarter and then on a quarterly basis until project • (( termination. Action Level(AL) wells will be placed between the ash and point of compliance(POC) wells.The distance of the wells will be 10, 25 and 40 feet from the trench. This staggered spacing will document water quality at various.distances downstream from the trench. Water quality data will be used to validate analytical fate and transport models presented previously. The AL wells will provide early warning of possible adverse environmental impacts.However,the intent of the project is to determine if coal'ash can be safely deposited in wet, high-energy environments. Analytical models predict that no standards will be exceeded at fifty feet downgradient of the trench,which is where the Division requires POC wells be placed. An exceedenance in water quality standards in AL wells should not constitute a violation of the permit. The petitioner reserves the right to terminate the project based on AL well water quality data. If a standard(s) is exceeded in an AL well no less than monthly monitoring will occur (in AL wells) to monitor possible adverse impacts at the POC wells. If a standard is exceeded in a POC well,the well will be re-sampled within one week of receiving analytical - results.If the confirmation sample confirms the initial finding then the project will be terminated and the ash removed from the trench.The ash will be disposed of at an approved landfill as soon as the material reaches and acceptable moisture level. f:> Background water quality data indicate that iron, lead, sulfate and nitrate have been measured at levels - above established standards. Boron and nitrite have been measured at levels very close to established standards. Water samples will be obtained from wells placed in the trench. These data,as well as column leaching-data, should establish the elements or compounds of concern. The determination that the ash has contributed ,to groundwater degradation shall be determined by the State's project manager with recommendations made by CGRS. 4 CGRS,Inc. { i 2.7 Aquifer Characterization In order to estimate the hydraulic conductivity (K) of the aquifer, a minimum of four slug tests will be conducted at monitoring wells deemed to be representative of the aquifer at the site and in the downgradient area. Water level measurements and times will be recorded using an InSitti Troll SP4000 pressure transducer. The test results will be input into standardized software, utilizing the Bouwer Rice Method, to determine hydraulic conductivity in the aquifer at each well. The average groundwater flow rate(v)can be estimated using the following equation: v=�4) - where: v=average groundwater flow rate(ft/day) . _ is K=hydraulic conductivity(ft/day) E:,.. i=hydraulic gradient(ft/ft) 4)=porosity(dimensionless). , Permeability testing will be conducted in wells completed within the ash on a periodic basis to evaluate possible changes in hydraulic conductivity with time. 2.8 Contingency Plan and Abatement I If adverse changes to water quality as predetermined by all interested parties are observed during testing, the . t coal ash will be immediately excavated and stored in a dry impoundment within the Varra property . ' boundary. Native soils will be placed in the trench and water quality will be monitored on a monthly basis k for the constituents-of concern. Additional remedial activities, if needed, will be commensurate with the ? extent and degree of water quality degradation. The water quality monitoring schedule is rigorous and should allow for the detection of adverse environmental conditions.long before any significant degradation 74 could occur. If the project is terminated it is likely that the only corrective action that will be required is source removal and monitoring. Monitoring will be conducted until it can be demonstrated that points of exposure(POEs)are not subject to impact. 1,3 F: Any other required remediation will be dependant on the physical and chemical characteristic of the rq contaminate of concern. Corrective action could include oxidant/reductant injection, permeable reactive barrier, groundwater pump and treat or any combination of the above. Analytical data generated from the column experiment indicates that boron and selenium are the most leachable elements (nonmetals).As such, . it is likely that the most effective form of remediation would be groundwater recovery and treatment. Previous analytical studies show that a single well pumping less than 10 gpm would capture all groundwater , bypassing the trench. Treatment for boron or selenium could be accomplished by ion exchange or reverse osmosis.Dilution with natural waters is also an option. 5 CGRS,Inc. 3.0 ORGANIZATION AND STAFF ASSIGNMENTS 31 Project Personnel Mr. Joby Adams of CGRS will serve as project coordinator and contact to Varra Companies. Dr. James Warner (CSU-Groundwater Program Leader) of Colorado State University will provide senior technical review. Mr. Chester Hitchens of CGRS will serve as field coordinator and will be responsible for supervising drilling activities and will perform or supervise water quality sampling. 3.2 Subcontractors • Subcontracted services for this project will include Drilling Engineers of Fort Collins, Colorado, and Technology Laboratories,Inc., of Fort Collins,Colorado. Drilling Engineers will be responsible for drilling soil borings and completing the borings as groundwater monitoring wells.Technology Laboratory will analyze groundwater samples for.the analytes of concern. 4.0 OVERVIEW-OUALITY ASSURANCE/QUALITY CONTROL Quality assurance (QA) is a management system for ensuring that all information, data, and decisions resulting from the project are technically sound and properly documented. Quality Control (QC) is the functional mechanism through which quality assurance achieves its goals. Quality control programs, for example, define the frequency and methods of checks, audits, and reviews necessary to identify problems and dictate corrective action to resolve these problems, thus ensuring data of high quality. Thus, a QA/QC program pertains to all data collection,evaluation, and review activities that are part of the project. The use of qualified personnel for conducting various portions of the project is of paramount importance to an effective'QA/QC program. This pertains not only to qualified QA/QC specialists, but also to specialists in other fields, including hydrogeologists,air quality specialists,soil scientists, analytical chemists and other scientific and technical disciplines. The project manager should ensure that qualified specialists, primarily individuals with the proper education,training, and experience, including licensed or certified professionals, are directing and performing the various project activities.The same general principles apply to selection of contractors and/or outside laboratories. Mother important aspect,of the QA/QC program is the communication between the QA/QC organization and the project manager. Regular appraisal by the project manager of the quality aspects related to the ongoing project data-gathering efforts provides the mechanism whereby the established objectives may be met. 6 CGRS,Inc. ( t ( QA/QC procedures should provide details relating to the schedule, information to be provided, and the mechanism for reporting to the project manager. Reports to the project manager should include: • Periodic assessment of measurement data accuracy,precision, and completeness; • results of performance audits; • Results of system audits; • Significant QA/QC problems and recommended solutions; and • Resolutions of previously stated problems. The individual responsible for preparing the periodic reports should be identified. These reports should contain a separate QA/QC section that summarizes data quality information.The Quality Assurance Project ( Plan is presented as Attachment C. 5.0 REMARKS The scope of work is based upon current available information and our understanding of this project. As the project develops,changes to the project scope of work may be required. If changes in the scope of work are dictated by the needs of the project,these changes will be presented prior to implementation. This report was prepared by CGRS,INC. ' A n / /(Dateof Joby L Adam 1.G, Princip•1/Hydrogeologist • Reviewed by: 1°0.4 ,Y� �,u, 7-©,f Date 6/74/ Chestetchens,P.G. Senior Hydrogeologist 7 • FIGURES P • I: 1 ° " o ir, ! 49 � a 4906 _./ +� 'N:4N15U Pe*a / • `� \ a85o � �/�Jo _ a:]9 _I ' ' 4894 ' `_I Sp 4 I II O 1 - I - 0/ el • A ° o • • Jc' �7 a a 7 ° Jr /� n a Ary Ila II I $ _ Ditch I \_• G 0 ii 29 @a0 II • ( 1 9 7--- 7 4 / p1 j /24 N85p X 40/ . ---'.� t-. .J I %/ 4799 • 3r te_}' .: �" / 4 n a9Jo L 4- =d"' rn Y .�/,.ra�yy p \--/I--h------1‘;,715-6) 65 i' " 1 ..: � V .Y ° © ^,� r t • . g St Vrain Sch "�: y aeoz i c �.� 131 n a p5r `. - U _ • .. p, B09 LLLi fa ! 1 0 4813 a 88/3: n V 0 1 2,- ,tl, / / ' • CI r� --•,V.tP ( ' a 926 a• � o f-� ` Ie t i/42-:-.,, ..-.:-7.----\S, 4830 . .`OJTCN /I1\f/�\ ` ; ,(CV\� 1 6 a/ N FIGURE 1 GOWANDA QUADRANGLE VARRA COMPANIES COLORADO-WELD CO. SITE LOCATION MAP -COAL ASH STUDY AREA , 7 5 SERIES PROJECT NO. PREPAf,2ED BY CG RS 1-135-2755 JLA i(1� COLORADO GROUNDWATER 2000 1 DATE 07/02/98 REVIE D BY RESOURCE SERVICES 0 4 \ 19 v J )) . ) • . I.' di ° \—I\ ---'d . z.85€1,_)Nst //° / c7Kc — H — L !t \7Y a 0 f• I Cy 29 , fff J 4850 Q • v j ÷,, •0. 71K. `: — Oi 900 a .. . :�.�� .y/� / Y L .. 4 i J 1 H ■ Ivi 4810 � fi'Ae. Ye..ra�10- I / Sq.; 9 •I' 4690y S{,y.,3, n 7.° 480 Vram Sch 6 � C 1 c' Lp51 • d 4809 dcaal 1 4 II �I � a u � u _�to� Il n Jj•/� / 0 4 I OIL 4Bh -.II /�J" n i,4> a 1. /�� o g �. 4823 ' 48171` o 48131 n •>�I `� r es \ 4 Pk, ;" c • CHANCE • . .a° ,I �� ..• 3J�01 FIGURE 2 • REGISTERED WELL LOCATIONS GOWANDA QUADRANGLE VARRA COMPANIES COLORADO-WELD CO. ' 7.5 SERIES PROJECT NO. IPREPARED BY CGRS 1-135-2755 JLA DATE COLORADO GROUNDWATER DATE 07/02/98 REVIEWED BY RESOURCE SERVICES 0 2000 I • cG' COLORADO GROUNDWATER Weld County Planning Dept. RESOURCE SEPVtCFs JAN 0, 41999 RECEIVEb December 29, 1998 Glenn F. Mallory • Colorado Department of Public Health and Environment (CDPHE) Hazardous Materials and Waste Management Division 4300 Cherry Creek Drive South Denver, CO 80246-1530 RE: Varra Coal Ash Project _ Weld County Colorado CGRS No. 1-135-2755 Dear Mr. Mallory: Enclosed please find the draft work plan for the Varra Coal Ash Burial Project. Please note that while the work plan describes in detail the laboratory testing methods and proposed field work, the work plan does not include analytical results or a discussion of analytical results as all of the results have not teen received. When all results have been received and tabulated a final work plan will be submitted to all interested parties for review. The work plan is being submitted as a draft in hopes that the time required for review will be lessened once the final draft has been submitted. I have included a summary of analytical results available at this time (Table 2). The results are for water samples obtained form the Sequential Extraction Leaching Procedure (SELP), which is described in detail in the work plan. This test should represent the maximum leaching capability • of a material, as it is an agitated extraction test. A review of analytical results shows that none of the samples exceeded hazardous waste characteristic levels. In addition, as a general trend, second extraction results were lower than initial extraction analyses. Aluminum and iron were the analytes most prevalent in exceeding primary or secondary drinking water standards. It is our belief that the non-agitated column leaching test will be most indicitative of field conditions and comparisons of pore volume flow through verses concentration will be made to • access possible adverse impacts to waters of the State. • • P.O. Box 1489 Fort Coffins, CO 8U&22 Phone. (9 70)49:5.7 7?U Fax: (970) 493-7986 Mr. Glenn Mallory Varra Coal Ash Project December 29, 1998 Page 2 If you have any questions regarding this letter or require further information, please contact me at (800)288-2657. Sincerely, CGRS, C. Joby . Adams, P.G. r cipal/Hydrogeologist - Attachments cc: Mr. Chris Varra—Varra Companies Mr.Dave Goss —PSC Mr. Terry Staley—PSC Mr. Trevor Jiricek—Weld County Health Department Mr. Harry Pose - Colorado Division of Minerals and Geology Mr. Ben Patton—Weld County Planning \\CGRS_HQ_SERVER\Joby\WINWORD\LETTERS\statecoverltr.doc Table 2 Analytical Results Fly Ash Disposal Project Weld County,Colorado CGRS Project No. 1-135-2755 Total Metals Analytical Results (mg/L) Sample pH Ex Al Sb As Ba Be B. Cd Cr Co Cu Fe Pb Mn NI Se Ag TI V Zn LI Hg Class F Silo Ash with 8.5 1 27.00 ND ND 3.80 0.003 5.70 ND 0.13 ND 0.03 7.40 ND 0.07 ND ND ND ND 0.05 0.05 0.24 ND Gypsum (C Silo) 2 9.70 ND ND 8.40 ND 0.69 ND 0.07 ND 0.01 2.20 ND 0.02 ND ND ND ND 0.02 0.02 0.12 ND 1 29.00 ND ND 1.30 0.002 1.70 ND ND ND 0.09 _ 15.00 ND 0.14 0.02 ND ND ND 0.05 0.15 0,05 ND Bottom Ash 8.5 2 37.00 ND ND 1.60 0.003 1.20 ' ND ND ND 0.12 21.00 ND 0.21 0.01 ND ND ND 0.06 0.22 0.04 ND .1 780.00 ND 0.40 5.20 0.082 120 0.05 0.52 0.11 0.80 210.00 0.62 1.40 0.18 0.64 ND ND 1.70 1.10 1.50 NA Cherokee Silo Ash 2/3 8.5 2 7r% Cherokee 4 Fly Ash a5 1 1.50 ND ND 0.98 ND 48 ND 0.19 ND. ND 0.31 ND ND ND 0.23 ND ND ND ND 0/6 ND \,- with Sodium 2 3/0 NA NA 2.10 NA 17 NA 0.63 NA NA 0.26 ND NA NA 0.10 NA NA NA NA 0.26 NA 1 1.90 ND ND 0.32 ND ND ND 0.07 ND. 0.05 056 ND 0.02 0.02 ND ND ND ND 0.01 0.02 ND Recycled Concrete 8.5 2 47.00 NA NA 0.71 NA NA NA 0.05 NA 0.15 56.00 NA 1.70 0.04 NA NA NA NA 0.57 0.05 NA 1 150.00 ND ND 1.90 0.009 0.09 ND 0.17 0.06 0.41_ 160.00 0.41 4,30 0.12 ND ND ND 0.31 1.50 0.15 ND Recycled Asphalt ,8.5 • 2 2.50 NA NA 0.25 ND ND NA 0.06 ND 0.02 0.27 ND ND ND NA NA NA ND ND 0.02 NA Class F Silo Ash with 1 750.00 ND ND 1.90 0.073 21.00 0.01 0.50 0.11 0.59 200.00 0.10 2.00 0.22 ND ND ND 1.30 0.61 0.56 0.002 Gypsum(C Silo) 2 12.00 NA NA 13.00 ND 0.30 ND 0.04. ND 0.01 3.30 ND 0.03 ND NA NA NA 0.02 0.01 0.14 ND 1 0.45 ND ND 0.08 ND 1.00 ND ND ND ND 0.24 ND ND ND ND ND ND ND ND 0.03 ND Bottom Ash 7 2 6.10 ND ND 0.27 ND 0.62 ND ND ND 0.02 3.40 ND 0.04 ND ND ND ND 0.02 0.08 0.01 ND 1 0.54 ND ND 0/9 ND 45 ND 0.11 ND ND 0.06 ND ND ND 0.19 ND ND 0.01 ND 0.73 ND Cherokee Silo Ash 2/3 7 2 110.00 ND ND 6.70 0.008 22 ND 0.05 ND 0.09 32.00 0.11 0.13 0.02 0.13 ND ND 0.17 0.13 0.33 0.001 Cherokee 4 Fly Ash ' 1 0.21 ND ND 0.88 ND 45 ND 0.18 ND ND 0.06 ND ND ND 0.20 ND ND ND ND 0/6 ND with Sodium 2 84.00 NA NA 5.30 NA 24 NA 0.11 NA NA 22.00 NA NA NA 0.14 NA NA NA NA 0.31 NA 1 .2.60 ND ND 0.15 ND ND ND 0.13 ND 0.06 0.64 ND 0.02 ND ND ND ND ND 0.01 0.02 ND Recycled Concrete 7 2 State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0,30/5.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 Standards A P P P P A P P A A/S S/A P S PPP P A A A P Notes: ND=Not Detected NA=Not Analyzed EX=Extraction mg/L=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard , S.-Secondary Drinking Water Standard Page 1 of 4 • ( ) - Analytical Results in Excess of Water Quality Standards • Fly Ash Disposal Project Weld County, Colorado CGRS Project No. 1-135-2755 TOTAL METALS Ex Total Class F Silo Ash with 1 6 11 1 18 Gypsum (C Silo) 2 3 3 0 6 1 4 1 3 8 Bottom Ash 2 4 2 0 6 Cherokee Silo Ash 2/3 2 11 4 6 21 2 NR 8 2 10 Cherokee 4 Fly Ash 1 4 3 3 10 with Sodium 2 4 5 2 . - 11 1 1 2 1 4 Recycled Concrete 2 3 NR 0 _ 3 1 9 1 8 18 Recycled Asphalt 2 0 3 7 10 pH 8.5 7 5 OTHER ANALYTICAL Class F Silo Ash with 1 2 2 3 7 Gypsum (C Silo) 2 1 1 2 4 Bottom Ash 1 0 0 1 1 2 0 0 0 0 Cherokee Silo Ash 2/3 1 •1 2 2 5 2 0 1 1 2 Cherokee 4 Fly Ash 1 2 2 2 6 with Sodium 2 1 1 1 3 1 1 1 2 4 Recycled Concrete 2 0 0 1 1 1 0 2 0 2 Recycled Asphalt 2 0 0 0 0 pH 8.5 7 5 Ex-Extraction# NR-Results not received at this time Pace 1 o14 WORK PLAN VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO • CGRS NO. 1-135-2755 by i CGRS,INC. & f COLORADO STATE UNIVERSM/ GROUNDWATER PROGRAM •. April 1, 1999 - i • CGRS,Inc. • Table of Contents 1.0 INTRODUCTION 1 1.1 Objectives 1 1.2 Background Information • 1 1.2.1 Local Geology/Hydrology 1 1.2.2 Coal Ash Source 2 2.0 INITIAL LABORATORY TESTING 3 2.1 Hydraulic Conductivity 3 2.2 Porosity 3 • 2.3 Analytical Data 4 2.3.1 SELP 4 2.3.2 SGCLP 5 23.3 TCLP • 5 2.3.4 SGLP 6 • 3.0 ANALYTICAL RESULTS 7 . 3.1 SELP 7 3.2 TCLP 7 3.3 SGLP 8 3.4 SGCLP 8 ' 3.5 Overview of Laboratory Data 8 4.0 PILOT STUDY 9 • • 4.1 Project Start-up 9 4.2 Hydrogeology Determinations 9 4.3 Background Water Quality 10 . 4.4 Water Quality and Hydrogeologic Monitoring 10 • 4.5 Contingency Plan and Abatement 11 • 5.0 PROJECT SCHEDULE 11 6.0 ORGANIZATION AND STAFF ASSIGNMENTS 11 r`-. 6.1 Project Personnel 11 6.2 Subcontractors 12 7.0 OVERVIEW- QUALITY ASSURANCE/QUALITY CONTROL 12 II 8.0 REMARKS 13 • • • • • CGRS,Inc. FIGURES: Figure 1 -Site Location Map Figure 2-Registered Well Location Map Figure 3-Area Use and Site Condition Map • TABLES: . Table 1 -Results for Hydraulic Conductivity and Porosity Tests Table 2-Analytical Results—SELP Table 3-Analytical Results—TCLP Table 4-Analytical Results—SGLP Table 5-Analytical Results-SGCLP Table 6-SELP Analytical Data in Excess of Water Quality Standards APPENDIX: Appendix A—Selected Data—Groundwater Quality and Hydrogeology of the Laramie-Fox Hills Aquifer in the Milton Reservoir Area,Weld County,Colorado Appendix B-Methods and Procedures Appendix C—Quality Assurance Project Plan CGRS,Inc. WORK PLAN VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO CGRS NO. 1-135-2755 1.0 INTRODUCTION This document presents the proposed work scope for the evaluation of coal.ash burial in saturated media. The field investigation will be performed in conjunction with a variety of laboratory studies in order to evaluate potential liabilities or benefits associated with coal ash burial. Specifically, this project addresses issues associated with the reclamation of gravel quarries under saturated conditions. A variety of laboratory experiments were conducted in order to evaluate coal ash leaching potentials for different pH ranges relative to effluent pore volume. The information' generated by this project will be invaluable to private companies or regulatory agencies insofar as evaluating under what conditions coal ash can be placed without incurring significant liability. This work is performed under the authorization of Varra Companies. The generation of this report was a-joint effort between CGRS, Inc. and Colorado State University Groundwater Program(CSU). 1.1 Obiectives The purpose of this project is to identify potential liabilities with the reclamation of gravel quarries • with coal ash and to determine if coal ash meets the criteria for classification as an inert fill.'* • Specific objectives for the Varra Coal Ash Burial Project are to determine: • Leaching characteristics of coal ash with respect to varying water quality conditions; • Permeabilities of various types of coal ash(bottom and fly ash); • Affects of coal ash burial on local hydrology and water quality; . • Hydrogeologic properties of coal ash; and • Physical characteristics of coal ash in saturated media. 1.2 Background Information 1.2.1 Local Geology/Hydrogeology The study area is an active gravel quarry located in the NW 1/4, Section 31, Township 3 North, Range 68 West, 6th P.M., Weld County Colorado (Figure 1). The surficial geology of the area as 1 I � CGRS,Inc. documented by Colton, 1978, varies between wind blown deposits of clay, silt and sand and sandy • to gravelly alluvium, which are Holocene in age. Colluvium consisting of bouldery to pebbly sandy silt and clay may contain and interfinger with alluvium of various ages. The depth to groundwater at the site generally varies between three and ten feet below ground surface(bgs). The inferred groundwater flow direction is to the northeast roughly parallel to the St. Vrain River drainage. • • fi. Water well records obtained from the Colorado Division of Water Resources indicate that one well may be located within one quarter mile of the proposed test plot. The registered well owner is Dakolios Construction and the permitted use of the well is industrial. The location of registered wells within a half-mile radius of the proposed test plot are depicted on Figure 2. Field verification of well locations and construction details, if available will be performed prior to project start-up. • Groundwater quality data for the immediate study area are limited. Reeder, 1993, describes in detail the regional hydrogeology near the area of interest. Water quality data for 36 domestic wells completed as bedrock aquifers (Larimie-Fox Hills Formation) in the Milton Reservoir were compiled by Reeder. A review of water quality data'indicate that all wells sampled exceeded water quality standards for total suspended solids and a large percentage exceeded standards for pH. Field and analytical data documented by Reeder and other background information are presented in Appendix A. 1.2.2 Coal Ash Source Public Service coal comes from a number of Colorado mines in Routt, Delta and Gunnison tt, t, counties. These mines include West Elk, TwentyMile, Powderhorn, and ColoWyo. This coal is normally purchased under long term contracts, which specify certain analytical parameters. Therefore, the chemical and physical properties of the coal (and resulting ash) do not change significantly from year to year. Analytical information for each of these coal sources is available as is the analytical information on the ash. This information has been provided in our earlier submittal. Comparisons of analytical data completed in the early 1990s with recent data indicate little variation in any of the ash constituents. 2 CGRS,Inc. 2.0 INITIAL LABORATORY TESTING Public Service Company generated analytical data indicating that fly ash is not a characteristic hazardous waste. Numerous analytical methods were used such as toxicity characteristic leaching procedure (TCLP). CGRS in conjunction with Colorado State University Groundwater Program performed a number of tests that included: , • Hydraulic Conductivity Testing(Permeameter Test); • • Porosity Determination; • Sequential Extraction Leaching Procedure(SELP); t • Synthetic Ground Water Column Leaching Procedure(SGCLP); • Toxic Characteristic Leaching Procedure(TCLP); and • Synthetic Ground Water Leaching Procedure(SGLP). A discussion of these tests is provided below. 2.1 Hydraulic Conductivity The hydraulic conductivity of the ash was performed using either a'"Constant Head" or "Falling Head" Permeameter. The Constant Head Permeameter works better for high permeability porous materials and the Falling Head Permeameter works best for low permeability porous materials. With either test the flow rate and the potentiometric head loss are measured through a sample of the ash. The hydraulic conductivity was then calculated using Darcy's Law. The hydraulic conductivity of the ash is required to determine the expected rate of groundwater flow through the . buried ash and the effeGts of burial on ground water flow patterns. 2.2 Porosity Porosity is the ratio of the volume of the voids to the bulk volume of the sample. With this test the volume and dry weight of a sample of ash was measured. The ash was then saturated with water under a vacuum pressure and the weight of the saturated sample measured. For saturated conditions the volume of the voids is equal to the volume of the water. The porosity is required to determine the pore volume for the ash. The results of hydraulic conductivity and porosity testing are summarized in Table 1. 3 CGRS,Inc. TABLE 1-Results for Hydraulic Conductivity and Porosity Tests • Sample ID Hydraulic Porosity Conductivity K(ft/day) Cherokee Silo Ash 2/3 0.24 0.5I Cherokee 4 Ash with Sodium 0.23 _ 0.46 . Class F Silo Ash with Gypsum 0.09 0.49 Bottom Ash 178. 0.51 Recycled Concrete 111. 0.29 • Recycled Asphalt 130. 0.33 • The bottom ash, the recycled concrete and the recycled asphalt all had relatively high hydraulic conductivity values in the range of 111 to 178 feet/day. The three fly ash samples had very low hydraulic conductivity values in the range of 0.09 to 0.24 feet/day. The porosity of the fly and bottom ash ranged from 0.46 to 0.51. These values are characteristic of very fine potous materials. The porosity of the recycled concrete and asphalt was 0.29 and 0.33, respectively. 2.3 Analytical Data 2.3.1 "Sequential Extraction Leaching Procedure"(SELF) The purpose of the"Sequential Extraction Leaching Procedure" (SELP) test was to determine the total quantity of the various chemical contaminants that may be potentially leached from the ash. The SELP test used synthetic groundwater with varying pH levels as the leaching fluid(s). With the SELP test, a specified weight (e.g. one kilogr4m) of the ash was combined with a specified volume of water(e.g. one liter) and agitated by rolling.for a specified period of time(e.g. 18 hours). This • represented a single extraction. The concentration of the chemical contaminant was then measured in the water. The SELP test was repeated for several sequential extractions until most of the 4 • CGRS,Inc. chemical contaminants have been extracted from the ash. This normally requires three or more extractions. Only two extractions were performed due to budgetary constraints. The SELP test was repeated for synthetic groundwater with varying pH values to represent a range of possible site conditions. Synthetic groundwater(s)with pH values of 5, 7 and 8.5 were used. The first extraction from the SELP test for each pH value was analyzed for the full suite of chemical compounds.These include: • Sulfate • Chloride • Fluoride • Cyanide •Mercury •Nitrate •Nitrite • 20 other metals (Aluminum, Antimony, Arsenic, Barium, Beryllium, Boron, . Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Lithium, Manganese, Nickel, Selenium, Silver, Thallium, Vanadium and Zinc). Conductivity and pH will of the leachate was measured at CSU prior to sending the sample to the laboratory for chemical analyses. The SELF' test was conducted at CSU. The extracted water samples from the test were sent to Analytica Environmental Labs for chemical analyses. Analytical results from the first extraction were used to identify those compounds to be analyzed for in subsequent extractions of the SELP test and in the SGCLP test. Those chemical compounds, which were either non-detect or detected at very low concentrations during the first extraction were not analyzed for in subsequent extractions of the SELF test or in the SGCLP test. y 2.3.2 "Toxic Characteristics Leaching Procedure" (TCLP) j'... The"Toxic Characteristic Leaching Procedure" (TCLP) test is designed to determine the mobility tz: of toxicity characteristic constituents and is the EPA method for classifying wastes as hazardous or non hazardous based on toxicity.The full suite of chemical compounds(see list for SELP test) was analyzed during the TCLP test. 2.3.3 "Synthetic Ground Water Leaching Procedure" (SGLP) The"Synthetic Ground Water Leaching Procedure" (SGLP) test is identical to the TCLP test with the exception that synthetic groundwater is used as the leaching fluid. A description of the TCLP test is provided above. The SGLP test was developed to simulate geochemical conditions more 5 CGRS,Inc. closely approximating.natural ground water than for the TCLP test. The results of the SGLP are directly comparable to the TCLP test. Groundwater obtained from the study area,was used for the test. The full suite of chemical compounds (see list for SELP test) were analyzed during the SGLP test. The groundwater used in the SGLP test as the leaching fluid was analyzed for full suite of chemical compounds. The • difference in the before and after chemical concentrations in the ground water used in the SGLP • test represents the concentration of the chemical contaminants leached from the ash. 2.3.4 "Synthetic Groundwater Column Leaching Procedure"(SGCLP) The purpose of the "Synthetic Groundwater Column Leaching Procedure" (SGCLP) test was to determine the rate as a function of pore volume at which the chemical contaminant will be leached from the buried ash. The SGCLP test used synthetic groundwater with varying pH levels as the leaching fluid(s). With the SGCLP test, a specified weight (e.g. one kilogram) of the ash was placed in a column. Once the column was saturated, the testing period began. One pore volume of water was passed through the column and the concentration of the various contaminants measured in the outflow water. The SGCLP test was then repeated for several sequential pore volumes of water. The hydraulic head on the column was adjusted so that one pore volume of water was passed through the sample in about 12 hours. Water samples were obtained for analyses at 2, 4 • and 8 pore volumes of water flow through. •. The SGCLP test was repeated for synthetic ground water with varying pH values to represent a range of possible site conditions. Synthetic ground water(s) with pH values of 5, 7 and 8.5 were used as the leaching fluid(s). For the fly ash, which has a very low hydraulic conductivity, the SGCLP test was conducted for 1,2 and 4 pore volumes. For the bottom ash, the recycled concrete and the recycled asphalt, which have high hydraulic conductivity, water samples were analyzed at 2, 4 and 8 pore volumes. • The chemical analyses for the first extraction of the SELP test was used to determine the suite of chemical compounds of interest in the SGCLP test. Chemical compounds, which were either non- detect or detected at very low were eliminated from further testing. The SELP test is a highly 6 " I CGRS,Inc. agitated test where as the SGCLP test is not. The SGCLP test was conducted at CSU with the collected water samples sent to Analytica Environmental Labs for chemical analyses. • Sulfate ' • Chloride • Fluoride • Cyanide • Mercury •Nitrite• Nitrate • 10 other metals from the following list of 20 metals (Aluminum, Antimony, " Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Lithium, Manganese, Nickel, Selenium,•Silver, Thallium, Vanadium and Zinc). Conductivity and pH will of the leachate was measured at CSU prior to sending the sample to the laboratory for chemical analysis. - 3.0 ANALYTICAL RESULTS 3.1 "Sequential Extraction Leaching Procedure" (SELP) Analytical results for the SELP are presented in Table 2. As mentioned, the purpose of the SELP testing was to estimate the maximum leaching capability of a material. In general, substantial concentration reductions were observed in second extraction analyses. Of the metals analyzed, at all pHs Aluminum, Boron, Iron and Manganese appeared to be the most leachable. None of these elements are listed in the primary drinking water standards: It appears that variations in pH have some effect in leaching characteristics of the sample set. At a pH of 8.5, there were 14 elements that exceeded standards in samples obtained from Cherokee Silo Ash 2/3. These concentrations were generally much higher than other ash samples as well. Recycled asphalt had the next highest number of elements that were in excess of drinking water standards for metals. At a pH of 7, samples obtained from Class F Silo Ash with Gypsum appeared to be the most e Fis leachable and at a pH of 5, samples obtained from the recycled asphalt had the most elements t-`> exceeding drinking water standards. Of the nonmetals fluoride appeared to be the most leachable compound, insofar as having the most number of samples exceeding the agricultural water quality standard. 3.2"Toxic Characteristics Leaching Procedure" (TCLJ The results of TCLP testing are presented in Table 3. A review of Table 3 shows that none of the samples tested exhibited characteristics of a hazardous waste. Overall, analyte concentrations were 7 r' l CGRS,Inc. much less than those resulting from the SELP testing, which was a more aggressive test. Boron, fluoride and manganese appeared to be the most leachable analytes in this test. 3.3 "Synthetic Ground Water Leaching Procedure" (SGLP) Analytical results for the SGLP are presented in Table 4. Water was obtained from the gravel quarry pond immediately adjacent from the proposed study area (Figure 3) and was used as the leaching fluid. This water is considered to be representative of local groundwater quality and was • analyzed to determine background water quality of the leaching medium: A review of Table 4 shows that the only analytes that were in excess of any standards were boron, manganese, selenium, fluoride, sulfate and nitrite. The water obtained from the quarry had sulfate and fluoride • concentrations of 2,900 and 4 mg/L, respectively. These concentrations are considered high enough to inhibit leaching of these analytes to the surrounding groundwater regime. 3.4 "Synthetic Groundwater Column Leaching Procedure"(SGCLP) The results for the SGCLP are presented in Table 5. A review of Table 5 shows that boron is the .. most leachable element with fluoride and sulfate being the most prevalent nonmetal constituents in I. excess of applicable standards. With the exception of aluminum and barium all constituents of concern decreased dramatically with respect to increasing pore volumes. It appears that variations in pH may have had a slight affect on leachability of different coal ash samples. 3.5 Overview of Laboratory Data The various testing regimes document hydraulic and leaching characteristics of coal ash. Permeabilities of coal ash varied over three orders of magnitude. The hydraulic conductivity of bottom ash closely approximated recycled concrete and recycled asphalt and is comparable to permeabilities associated with medium and coarse-grained sands: Fly ash samples were three orders of magnitude less permeable than bottom ash and non-ash samples and have permeabilities comparable with silt and clay. In general,the most prevalent elements or compounds detected in the leaching studies coincide with the general composition of coal ash(aluminum, barium, boron, iron and manganese). The intent of SELP study was to determine the maximum leachability of coal ash under different saturated environments— namely different pH values. Fluctuations in pH did seem to have an affect on the - I 8 I. - 1 CGRS,Inc. leachability of various samples. It appears that under certain conditions, recycled asphalt is more reactive with fluids than coal ash. Recycled concrete had minor reactivity with different leaching fluids. A summary of samples exceeding a water quality standard in the SELP testing is presented in Table 6. The TCLP testing showed dramatically reduced analyte concentrations. Boron, fluoride and manganese were the analytes the exhibited the most leachability above water quality standards in • I this test. • , The SCLP was identical to the TCLP testing with the exception that the gravel quarry water was used as the leaching medium. A review of Table 4 shows that boron was the most leachable element:Background levels of sulfate and fluoride exceeded water quality standards and.were high enough to mask all leaching characteristics of these compounds. - The SGCLP showed that boron, fluoride and sulfate were by far the most leachable compounds. Boron and sulfate concentrations decreased dramatically compared to pore volume flow through. 4.O PJLOT STUDY 4.1 Project Start-up The project start-up will consist of developing a work plan and a site specific Health and Safety plan. All required permits will be obtained prior to conducting the investigation. Utility companies will be contacted for the location of all underground utilities prior to commencing investigative • activities (telephone, sewer, electrical, cable television, natural gas lines, oil-and gas pipelines, buried tanks and wells). 4.2 Hydrology Determinations Prior to initiating coal ash placement, the local groundwater flow direction will be estimated from groundwater monitoring wells installed to determine hydraulic characteristics of the local aquifer . and local groundwater quality. It is anticipated that ten wells will be installed to monitor variations in local aquifer characteristics as a result of coal ash burial. The hydraulic conductivity will be estimated by performing slug and/or aquifer testing. Prior to initiating the pilot project groundwater 9 v) ! CGRS,Inc. quality samples will be obtained and analyzed for pH, TSS, TDS, and other relevant parameters identified in the laboratory leaching tests. Samples will be obtained from no less than one up- gradient and two down gradient wells. The anticipated locations of the monitoring wells are depicted on Figure 3. Typical monitoring well construction details are presented in Appendix B. • 4.3 Background Water Quality In addition to the laboratory testing presented herein, background groundwater quality samples will be obtained from site monitoring wells immediately subsequent to their placement and immediately prior to coal ash placement. The gravel quarry water obtained for the laboratory testing should be chemically consistent with local groundwater as it is in hydraulic connection with proposed testing site. The three sampling events should establish baseline levels of the constituents of concern. 4.4 Water Quality &Hydrogeologic Monitoring The effects on groundwater quality and hydrology as a result of coal ash burial will be evaluated by placing roughly 400 tons of coal ash within a trench at the location shown on Figure 3. The coal ash will be placed so that the water table intersects the coal ash and that any fluctuation of the water table will be within the coal ash bed. The coal ash will be buried in a trench measuring 10 feet in width, 100 feet in length and roughly 10 feet in depth. In order to evaluate hydraulic characteristics of bottom ash and fly ash, one-half of the trench will be filled with fly ash.,A native soil divider will be left and the other half of the trench will be filled with bottom ash and fly ash. Bottom ash will be placed in the lower one-half of the saturated portion of the,trench and fly ash will be placed to one foot below ground surface. Approximately one foot of native soil will be place over the entire trench. Variations 'in water quality will be verified through. quarterly water quality monitoring for analytical parameters identified in the laboratory quality assurance plan (Appendix C). The results of the analyses will be submitted to the Colorado Department of Public Health and Environment, Division of Minerals and Geology and Weld County Health Department. Within one week of coal ash burial water quality samples will be obtained from all monitoring wells. Water quality samples will be obtained on a weekly basis for one month and then on a monthly basis. The length of 10 \ I 1 CGRS,Inc. sampling will be determined after reviewing the initial analytical results; it is not anticipated that • more than three months will be required before water quality parameters equilibrate. Surface water quality will be monitored by obtaining samples from the Saint Vrain river downstream of the study area. Surface water samples will be obtained at the same frequency as ' groundwater samples. 4.5 Contingency Plan and Abatement If adverse changes to water quality as predetermined by all interested parties are observed during ! ' testing, the coal ash will be immediately excavated and stored in a dry impoundment within the Varra property boundary. Native soils will be placed in the trench and water quality will be • monitored on a monthly basis for the constituents of concern. Additional remedial activities, if needed, will be commensurate with the extent and degree of water quality degradation. 5.0 PROJECT SCHEDULE Upon authorization to initiate field testing, two weeks will be required to contract subcontractors and initiate field activities. Based on laboratory experiments it is anticipated that approximately three months will be required to perform field activities. The project length is based partially on pore volume flow through calculations and the observed leachability of coal ash samples. It is anticipated that a summary report will be submitted within four months of coal ash placement. The report will detail analytical results, hydraulic characteristics of the ash bed, observed variations in hydrogeology and water quality. 6.0 ORGANIZATION AND STAFF ASSIGNMENTS 6.1 Protect Personnel Mr. Joby Adams of CGRS will serve as project coordinator and contact to Varra Companies. Dr. James Warner (CSU Groundwater Program Leader) of Colorado State University will provide senior technical review. Mr. Chester Hitchens of CGRS will serve as field coordinator and will be responsible for supervising drilling activities and will perform or supervise water quality sampling. 11 CGRS, 6.2 Subcontractors Subcontracted services for this project will include Drilling Engineers of Fort Collins, Colorado, I- and Analytica Environmental Laboratories, Inc., of Broomfield, Colorado. Drilling Engineers will be responsible for drilling soil borings and completing the borings as groundwater monitoring wells. Analytica will analyze groundwater samples for the analytes of concern. 7.0 OVERVIEW- QUALITY ASSURANCE/QUALITY CONTROL Quality assurance (QA) is.a management system for ensuring.that all information, data, and decisions resulting from the project are technically sound and properly documented. Quality Control (QC) is the functional mechanism through which quality assurance achieves its goals. Quality control programs, for example, define the frequency and methods of checks, audits, and reviews necessary to identify problems and dictate corrective action to resolve these problems, thus ensuring data of high quality. Thus, a QA/QC program pertains to all data collection, evaluation, and review activities that are part of the project. The use of qualified personnel for conducting various portions of the project is of paramount importance to an effective QA/QC program. This pertains not only to qualified QA/QC specialists, but also to specialists in other fields, including hydrogeologists, air quality specialists, soil scientists, analytical chemists and other scientific and technical disciplines. The project manager • should ensure that qualified specialists, primarily individuals with the proper education, training, ;.. and experience, including licensed or certified professionals, are directing and performing the M1 2 various project activities. The same general principles apply to selection of contractors and/or outside laboratories. 12 CGRS,Inc. Another important aspect of the QA/QC program is the communication between the QA/QC organization and the project manager. Regular appraisal by the project manager of the quality aspects related to the ongoing project data-gathering efforts provides the mechanism whereby the established objectives may be met. QA/QC procedures should provide details relating to the schedule, information to be provided, and the mechanism for reporting to the project manager. Reports to the project manager should • include: • • • Periodic assessment of measurement data accuracy, precision, and completeness; • results of performance audits; • Results of system audits; • Significant QA/QC problems and recommended solutions; and • Resolutions of previously stated problems. The individual responsible for preparing the.periodic reports should be identified. These reports should contain a separate QA/QC section that summarizes data quality information. The Quality Assurance Project Plan is presented as Attachment C. 8.0 REMARKS The scope of work is based upon current available information and our understanding of this project. As the project develops, changes to the project scope of work may be required. If changes in the scope of work are dictated by the needs of the project,these changes will be presented prior to implementation. : ' • i 13 � C •` \ �) CGRS,Inc. This report was prepared by CGRS,INC. ADate y//Y Joby L. da , P.G. ' ci,: ydrogeologist • CGRS,Inc. Reviewed by: �GUlicr• Date f0/95' r. James W. Warner,P.E. Groundwater Program Leader Colorado State University 'IvOa AEggf O '). ` T % ' W. W44. a p-p fa 16492 1* L q'. V •c* ir. F:q • 14 , ' 1 REFERENCES Dragun, J., 1988. The Soil Chemistry of Hazardous Materials. Hazardous Materials Control Research Institute. Silver Spring, Maryland, pp 76-80 Haisett, D.J. "A Generic Test of Leachability: The Synthetic Groundwater Leaching Procedure" In Proceedings for the Waste Management for the Energy Industries Conference; University of :North Dakota, April 29-May 1, 1987. Hem, J. D., 1992. Study and Interpretation of the Chemical Characteristics of Natural Water. • U.S. Geological Survey Water-Supply Paper: 2254 Reeder, D.C., 1993. Groundwater Quality and Hydrogeology of the Laramie-Fox Hills Aquifer in the Milton Reservoir Area, Weld County, Colorado: Colorado State University Unpublished Master's Thesis. Sorini, S. 1997. "A Summary of Leaching Methods" American Coal Ash Association, Inc. Alexandria, Virginia. • • • I FIGURES • • L v \\K..'\ 0 0 I a40/�j / e 4906 , 4 • 1 _ — f O �Lc+ee I cJ ti I % \ a rCO o- V -.'-.Nli 01 v-pcb tl94:78 . �"78 . 50. :.• ' 4694 © Ill - f• �I 7c it / \ r- 0n iA / 1: I II II Id c II II tl tl n n ,I ll V I p O II I w:= I' u �_ ___ — _ — � _2 3'1 I ' k J nQ . II a,I II C \ craY 'Ditch (\ A 0 ac` J \ II Id h19 . �0);(5, n I > w I `1 n / ' SITE 97 tl . LOCATION• • r-- 1.yes- —.- ._.._—�_-:.-.----- 1 - --- 0 4810 � �'S $7 ° a50 ) �``k d�t 9,� �l''. . `\ //y a�t Vrzln Sch / j P 4800 lll/// �-Sa P b 36 1331 I"u LA5. 0809 • O0 °= 'Eli e W. o `a0 n o BM ai✓L • 4813 1 - • 48/3' n �.. 1MANC �� _ ° .. II V �` -__ ab•___-: � aril Ii- ° c• ry/I L .a"© s0 4826).. a tl[/°lh�/ /� 1, P I n 4830 o'rc i / /O I i. 1 6 ° l �NV S� Tr FIGURE 1 ;OWANDA QUADRANGLE , VARRA COMPANIES ' COLORADO-WELD CO. SITE LOCATION MAP-COAL ASH STUDY AREA 7.5 SERIES PROJECT NO. . PREPA ED BY CGRS RS 1-135-2755 JLA f' COLORADO GROUNDWATER DATE 07/02/98 REVIE D BY RESOURCE SERVICES 0 2.000 _J _... 7 I,i 4 ll_/{ -#7 -)) • • \\IT..-----",T 1 I �!f 1 Ir p911_ •°� lz I 4894 �^y'y.�- �1 950 • _ .— — __ — n • .-- — __ 66 •'n �. I�— _�� _,�, l m rl 1. r------/-\•._.....-----/:! s ,FIB ' c . ;It1. u / I . to _ /� Ditch �'� 0 = I \3°a "1 5 ...,.J I— e -1� , 29 } _ '\\ it I � j • I":<: 4' • •900 Y 2 4Bpp / / \ _ ;/<• • �/ Y e a897 • c. ze fr. {� 4799 C IPP 11 i II .850 vv// •4y ° ��oC• 2 jq�tVrainSch• 3t ` j 31 t �p5T : 4 li .4809 c $ �f 7?7 ,c1Th i / . O11 1 !I Q: h - u BN • ^` �'If %% Yny�. ° 4813 ° • 4Bi3� I1 - s- n _ . :. / ill i• e (-I..-- . . \ clas•sc . ,-. JP It; % 4,930 . ..Pt,' l • / o \\f 1 6 a` ie . t. ..- 1 .e.G.7/Threl c--.x-\ ___c___ . _ _ •• FIGURE 2 GOWANDA QUADRANGLE REGISTERED WELL LOCATIONS • COLORADO-WELD CO. VARRA COMPANIES 7.5 SERIES PROJECT NO. PREPARED BY CGRS • 1-135-2755 JLA COLORADO GROUNDWATER 00 DATE 07/02/98 REVIEWED BY RESOURCE SERVICES 0 20 . Table 2 Analytical Results Fly Ash Disposal Project Weld County, Colorado CGRS Project No. 1-135-2755 • Total Metals Analytical Results (mg/L) Sample pH Ex Al Sb As Ba Be B Cd Cr Co Cu Fe Pb Mn NI Se Ag TI V Zn LI Hg Class F Silo Ash with 8.5 1 27.00 ND ND 3.80 0.003 5.70 ND 0.13 ND 0,03 7.40 ND 0.07 ND ND ND ND 0.05 0.05 0.24 ND Gypsum (C Silo) 2 9.70 ND ND 8.40 ND 0.69 ND 0.07 ND 0.01 2.20 ND 0.02 ND ND ND ND 0.02 0.02 0.12 ND 1 29.00 ND ND 1.30 0.002 1.70 ND ND ND 0.09 15.00 ND 0.14 0.02 ND ND ND 0.05 0.15 0.05 ND Bottom Ash 8.5 2 37.00 ND ND 1.60 0.003 1.20 ND : ND ND 0.12 21.00 ND 0.21 0.01 ND ND ND 0.06 0.22 0.04 ND 1 780.00 ND 0.40 5.20 0.082 120 _0.05 0.52 0.11 0.80. 210.00 0.62 1.40 0.18 0.64 ND ND 1,70 1.10 1.50 NA Cherokee Silo Ash 2/3 8.5 2 Cherokee 4 Fly Ash a5 1 1.50 ND ND 0.98 ND 48 ND 0.19 ND ND 0.31 ND ND ND 0.23 ND ND ND ND 0/6 ND' with Sodium 2 3.70 NA NA 2.10 NA 17 NA 0.63 NA NA 0.26 ND NA NA 0.10 NA NA NA NA 0.26 NA 1 1.90 ND ND 0.32 ND ND ND 0.07 ND 0.05 0.56 ND 0.02 0.02 ND ND ND ND 0.01 0.02 ND Recycled Concrete 8.5 2 47.00 NA NA 0.71 NA NA NA 0.05 NA 0.15 56.00 NA 1.70 0.04 NA NA NA NA 0.57 0.05 NA 1 150.00 ND ND 1.90 0.009 0.09 ND 0.17. 0.06 0.41 160.00 0.41 4.30 0.12 ND ND ND 0.31 1.50 0.15 ND Recycled Asphalt 8.5 2 • 2.50 NA" NA 0.25 • ND ND NA 0.06 ND 0.02 0.27 ND ND ND NA NA NA ND ND 0.02 NA Class F Silo Ash with 7 1 750.00 ND ND 1.90 0.073 21.00 0.01 0.50 0.11 0.59 200.00 0.10 2.00 0.22 ND ND ND 1.30 0.61 0.56 0.002 Gypsum(C Silo) 2 12.00 NA NA 13.00 ND 0.30 ND 0.04 ND 0.01 3.30 ND 0.03 ND NA NA NA 0.02 0.01 0.14 ND 1 0.45 ND ND 0.08 ND 1.00 ND ND ND ND 0.24 ND ND ND ND ND ND ND ND 0.03 ND Bottom Ash 2 6.10 ND ND 0.27 ND 0.62 ND ND ND 0.02 3.40 ND 0.04 ND ND ND ND 0.02 0.08 0.01 ND 1 0.54 ND ND., 0/9 ND 45 ND 0.11 ND ND 0.06 . ND ND ND 0.19 ND ND 0.01 ND 0.73 ND Cherokee Silo Ash 2/3 7 2 110.00 ND ND 6.70 0.008 22 ND 0.05 ND .0.09 32.00 0.11_ 0.13 0.02 0.13 ND ND 0.17 0.13 0.33 0.001 Cherokee 4 Fly Ash 1 0.21 ND _ ND 0.88 ND 45 ND 0.18 ND ND 0.06 ND ND ND 0.20 ND ND ND ND 0/6 ND with Sodium 2 84.00 NA NA 520 NA 24 NA 0.11 NA NA 22.00 NA NA NA 0.14 NA NA NA NA 0.31 NA 1 2.60 ND ND 0.15 ND ND ND 0.13 ND 0.06 0.64 ND 0.02 ' ND ND ND ND ND -0.01 0.02 ND Recycled Concrete 2 State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0.200 9.050 0.050 0.002 0.100 2.0 2.50 0.0Cr, Standards A P PP P A _ P P A NS S/A . P S P, PP P A A A P — s Notes: • ND=Not Detected NA=Not Analyzed . • EX=Extraction mg/L=milligrams per liter A-Agricultural Standard • P-Primary Drinking Water Standard S-Secondary Drinking Water Standard • . • Page 1 of 4 • • Table 2 Analytical Results Fly Ash Disposal Project • Weld County, Colorado CGRS Project No: 1-135-2755 • . Total Metals Analytical Results (mg/L) Sample pH Ex AI Sb As Ba Be B Cd Cr Co Cu Fe Pb Mn NI Se Ag TI V Zn LI Hg Recycled Asphalt 7 1 1.2 ND ND 0.089 ND ND ND ND ND ND 0.88 ND 0.026 ND • ND ND ND 0.01 0.011 0.009 ND 2 26 NA NA 0.39 NO 0.18 NA NA ND NA 28 NA 0.076 NA NA NA NA 0.062 0.36 0.03 NA Class F Silo Ash with 5 1 0.10 ND ND 0.98 ND 6.10 ND 0.10 ND ND ND ND ND ND ND ND ND ND ND 0.19 ND Gypsum (C Silo) 2 0.13 NA NA 0.94 NA ND NA 0.06 NA NA NA NA NA NA NA NA NA NA NA 0.13 NA Bottom Ash 5 1 6.40 ND ND 0.36 ND 1.20 ND ND ND 0.03 4.20 ND 0.05 ND ND ND ND 0.02 0.06' 0.03 ND 2 0.37 NA NA 0.06 NA 0.56 NA NA NA ND 0.20 ND ND NA NA NA NA ND ND 0.01 ND Cherokee Silo Ash 2/3 5 1 44.00 ND ND 2.90 0.0036 51.00 ND 0.13 ND 0.04 12.00 ND 0.05 ND 0.27 ND ND 0.06 0.06 0.77 0.0001 2 5.10 NA NA 1.70 NA 15.00 NA ND NA . ND ND NA ND NA ND NA NA 0.03 ND 0.22 ND Cherokee 4 Fly Ash , 5 1 0.61 ND ND 0/7 ND 51.00 ND 0.21 ND . ND 0.11 ND . ND ND 0.21 ND ND ND ND 0.77 ND with Sodium 2 4.10 NA NA 1.10 NA 22.00 NA 0.05 NA NA 0.28 NA NA NA 0.13 NA NA NA NA 0.24 NA 1 1.30 ND ND 0.45 ND 0.08 ND 0.06 ND 0.04 0.56 ND 0.01 ND ND ND ND ND ND 0.02 ND Recycled Concrete 5 2 2.30 NA NA 0.23 NA ND NA 0.08 NA 0.02 0.09 NA ND NA NA NA NA NA NA 0.02 NA Recycled Asphalt 5 1 120.00 ND ND 1.60 1 0.01 0.09 ND 0.13 0.05 0.33 140,00 0.33 3.90 0.10 ND ND ND 0.26 1.30 0.12 ND 2 87.00 NA NA 1.00 0.01 0.08 NA 0.07 0.03 0.22 90.00 0.19 2.30 0.62 NA NA NA 0.17 0.86 0.08 NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 Standards . - A P P PP A P P _ A NS S/A P S P PP P A A A P • Notes: ND=Not Detected NA=Not Analyzed . . EX=Extraction • • mg/L=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard • • Page 2 of 4 Table 2 Analytical Results • Continued Sample pH Ext Other Analytical Results (mg/L) Total Cyanide Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite Class F Silo Ash with Gypsum (C Silo) 8.5 1 ND NA 130 8.4 23 7.9 4.6 2 ND NA 20 5.8 65 3.3 1 Bottom Ash 8.5 1 ND NA 29 0.95 170 1.1 0.031 2 ND NA 6.5 0.35 45 0.31 0.067 Cherokee Silo Ash 2/3 8.5 1 NA 0.021 5.1 3.1 ND 0.35 0.013 2 NA 0.016 5.7 1.3 69 ND 0.0058 T 't Cherokee 4 Fly Ash with Sodium 8.5 1 NA 0.021 4.9 5.B 1100 0.14 ND 2 NA 0.012 1.2 3.1 59 0.15 0.0082 Recycled Concrete 8.5 1 NA 0.047 26 5.3 10 1.4 0.096 2 NA 0.027 1.5 1.2 _ 8.3 0.4 0.034 Recycled Asphalt 8.5 1 NA 0.012 10 0.98 44 ND 0.0078 2 NA ND t6 1.2 8.2 0.2 0.0055 Trip Blank 1 , 8.5 NA NA 31 1.5 2.6 NA NA Class F Silo Ash with Gypsum (C Silo) 7 1 NA ND 120 11 840 7.4 1.3 2 NA ND 31 7.4 19 2.1 1 Bottom Ash 1 NA ND 23 0.89 140 0.87 0.048 _ 2 NA ND 5.1 0.46 33 0.16 ND Cherokee Silo Ash 2/3 1 NA ND 4.1 4.7 430 0.23 0.014 2 NA ND 1.8 2.3 60 0.17 0.32 Cherokee 4 Fly Ash with Sodium 7 — 1 NA 0.011 3.4 5.1 430 0.2 0.017 _ 2 NA ND 1.8 3.1 49 0.12 0.036 l Recycled Concrete 7 1 NA 0.11 26 4.1 ' . 31 0.92 ND 2 State Water Quality Standards 0.2 250 . 2.0 250 10 1 P S - A P - P P Note: NA-Not Analyzed . ND=Not Detected A-Agricultural Standard , P-Primary Drinking Water Standard ' S-Secondary Drinking Water Standard Other Analytical Page 3 of 4 \\CGRS HQ_SERVERUOBY\EXCELWarra Chem LIst2.xls / Analytical Results in Excess of Water Quality Stanaards Fly Ash Disposal Project Weld County, Colorado CGRS Project No. 1-135-2755 • TOTAL METALS Ex Total Class F Silo Ash with 1 6 11 1 18 Gypsum (C Silo) 2 3 3 0 6 1 4 1 3 8 Bottom Ash 2 4 2 0 6 1 11 4 6 21 Cherokee Silo Ash 2/3 2 NR 8 2 10 Cherokee 4 Fly Ash -1- 4 3 3 . 10 with Sodium 2 4 5 ' 2 11 . 1 1 2 1 4 Recycled Concrete 2 3 NR 0 3 1 9 1 8 18 Recycled Asphalt 2 0 3 7 10 pH 8.5 7 5 OTHER ANALYTICAL Class F Silo Ash with 1 2 2 3 7 Gypsum (C Silo) 2 1 1 2 4 1 0 0 1 1 Bottom Ash 2 0 0 0 0 1 1 2 2 5 Cherokee Silo Ash 2/3 2 0 1 1 2 Cherokee 4 Fly Ash 1 2 2 2 6 with Sodium 2 1 1 1 3 1 1 1 2 4 Recycled Concrete 2 0 0 1 1 1 0 2 0 2 Recycled Asphalt 2 0 0 0 0 pH 8.5 7 5 Ex-Extraction# . NR-Results not received at this time • • ' Page 1 of 4 ATTACHMENTS 1 • - I .5 ir" < I ATTACIIMENT A METHODS AND PROCEDURES 4. CGRS, Inc. METHODS AND PROCEDURES • Soil Borings Soil sampling will be conducted in accordance with ASTM:D 1586-87. Using this procedure, a 2-inch O.D. split-spoon sampler will be driven into the soil by a 140 pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sample an additional 12 inches, known as the penetration resistance (N value), will be recorded. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Soil Classification/Characterization • As samples are obtained in the field, they will be visually inspected and classified in accordance with ASTM:D 1488-84. Representative portions of the samples will then be retained for further examination and for verification of the various strata, the N value, water level data, and pertinent information regarding the method of maintaining and advancing the boring will be provided. Charts illustrating the soil classification procedure,descriptive terminology and symbols used on the logs will be provided. Decontamination To avoid potential transport of contaminated materials to the project site, all drilling equipment and down- hole tools will be steam cleaned prior to mobilization. Monitoring Well Construction Monitoring wells will be installed utilizing the following general construction criteria: • borehole diameter:minimum 6.25inches; • • well diameter: 2 inches; • estimated depth: 15-30 feet below ground surface; • casing material: schedule 40, flush thread PVC; • well screen: 2 inch I.D.,10 feet in length,#0.01 slot PVC; • estimated screened interval: 5 feet above and 10-25 feet below the groundwater table; • annular pack: 10-20 silica sand; • protective casing: minimum 12 inch I.D:, steel flush or above grade,locking cap; and • annular seal: cement grout and bentonite pellets. Groundwater Sampling All borings where groundwater is encountered will be sampled from the suspected cleanest to the most contaminated according to the protocols listed below. All pertinent information will be recorded on a sampling information form. CGRS,Inc. - Field Protocol Step 1 -Measure water level. Step 2-A dedicated polyethylene bailer will be used to develop each boring. Three bore volumes will be evacuated from each boring prior to sampling. Step 3-Collect water samples. Water samples will be collected using a polyethylene bailer. A field blank will be collected during the sampling program to ensure quality control. Step 4-Store samples in a cooler on ice for transport to the laboratory. Follow all documentation and chain-of-custody procedures. Step 5-Clean equipment. Water level measurement-equipment will be cleaned with ethanol followed by a deionized water rinse. • Upon completion of soil or groundwater sampling, a chain of custody log will be initiated. A copy of the chain of custody will be returned to the project manager. Chemical Analysis All analytical parameters are described in the Laboratory Quality assurance plan presented as Appendix C. Groundwater Elevation Measurements • The following outlines our standard groundwater quality sampling methodology. Before purging any of the { soil test borings or monitoring wells,water level measurements must be taken. Measuring Point Establish the measuring point for the well. The measuring point is marked on the north side of the top of the temporary monitoring well riser. The top of the riser is normally a 2 inch casing inside a locked protective casing. The riser will be PVC pipe, galvanized pipe or stainless steel pipe. The measuring point should be described on the groundwater sample collection record. Access After unlocking or opening a monitoring well, the first task will be to obtain a water level measurement. Water level measurements will be made.using,an electronic water level indicator. Depth to water and total depth of the well will be measured for calculation of purge volume. CGRS,Inc. 'A ti f Measurement , To obtain a water level measurement, lower a decontaminated electronic water level probe into the monitoring well. Care must be taken fo assure that,the electronic probe hangs freely in the monitoring well and is not adhering to the well casing. The electronic probe will be lowered into the well until the audible sound of the unit is detected and the light on the electronic sounder illuminates. At this time, the precise measurement should be determined by repeatedly raising and lowering the probe to obtain an exact measurement. The water level measurement is then entered on the groundwater sampling collection record sheet or groundwater level data sheet to the nearest 0.01 feet. Decontamination The electronic probe shall be decontaminated immediately after use by wiping with isopropyl alcohol- , soaked paper towels. Always proceed in order from the suspected cleanest well or soil test boring to the suspected most contaminated one. • Purge Volume Computation All soil test borings and temporary monitoring wells will be purged prior to sample collection. Depending upon the rate of recovery, three to five'volumes of groundwater present in a well or bore hole shall be withdrawn prior to sample collection. If a well or bore hole bails dry, the well or bore hole should be allowed to recharge and a sample taken as soon as there is sufficient volume for the intended analysis. The volume of water present in each well or bore hole shall be computed using the two measurable variables, length of water column in soil boring or monitoring well and diameter. Purging and Sample Collection Procedures Bailing • Obtain a laboratory decontaminated disposable bailer and a spool of nylon rope or equivalent bailer cord. Tie a bowline knot or equivalent through the bailer loop. Test the knot for adequacy by creating tension between the line and the bailer. Tie again if needed. New rope will be used for every sample or purge. New clean latex gloves will be used when touching the rope or bailer. • Spread a clean plastic sheet near the base of the well. The plastic sheet should be of sufficient size to prevent bailer or bailer rope from contacting the ground surface. • Place the bailer inside the well to verify that an adequate annulus is present between the bailer and the well casing to allow free movement of the bailer. • Lower the bailer carefully into the well casing to remove the sample from the top of the water column, taking care not to agitate the water in the well. • , CGRS, Inc. 1,,.._.../ . • Pour the bailed-groundwater into a bucket. Once the bucket is full,transfer the water to a barrel and contain on-site. • • Raise the bailer by grasping a section of cord, using each hand alternately. This bailer lift method will assure that the bailer cord will not come into contact with the ground or other potentially contaminated surfaces. Sampling Instructions for obtaining samples for parameters are reviewed with the laboratory coordinator to insure that proper preservation and filtering requirements are met. • Appropriate sample containers will be obtained from the contract laboratory. After samples are collected, they will be put on ice in coolers (4°C). Care will be takeh to prevent breakage during transportation or shipment. • Samples collected by bailing will be poured directly into sample containers from bailers. The sample should be poured slowly to minimize air entrapment into the sample bottle. During collection,bailers will not be allowed to contact the sample containers. • Upon completion of sampling a chain-of-custody log will be initiated. Chain-of-custody records will include the following information: project name and number, shipped by, shipped sampling ' point, location, field ID number, date, time, sample type, number of containers, analysis required and sampler's signature. The samples and chain-of-custody will be delivered to the laboratory. Upon arrival at the laboratory the samples will be checked in by the appropriate laboratory personnel. Laboratory identification numbers will be noted on the chain-of-custody record. Upon completion of the laboratory analysis,the completed chain-of-custody record will be returned to the ' project manager. Field Cleaning Procedures { For all equipment to be reused in the field,the following cleaning procedures must be followed: .• Disassemble the equipment to the extent practical. 44 • 'Wash the equipment with distilled water and laboratory-grade detergent. [ • Rinse with distilled water until all detergent is removed. • Rinse the equipment with isopropyl or methanol, making sure all surfaces, inside and out, are rinsed. • Triple rinse the equipment with distilled water. Laboratory Selection The project manager should consider the following factors when selecting a laboratory: • Capabilities (facilities,personnel, instrumentation), including: • Participation in interlaboratory studies (e.g.,EPA or other Federal or State agency sponsored • analytical programs); • Certifications(e.g., Federal or State); CGRS,Inc. • References.(e.g. other clients); and • . Experience(UST,RCRA and other environmentally related projects). • Service; • Turnaround time; and • Technical input(e.g., recommendations on analytical procedures). The project manager is encouraged to gather pertinent laboratory-selection information prior to extensively defining analytical requirements under the project. A request may be made to a laboratory to provide a qualifications package that should address the points listed above. Once the project manager has reviewed the various laboratory qualifications, further specific discussions with the laboratory or laboratories should take place. In addition, more than one laboratory should be considered. For large-scale investigations, selection of one laboratory as a primary candidate and one or two laboratories as fall-back candidates should be considered. The quality of the laboratory service provided is dependent on various factors. The project manager should be able to control the quality of the information (e.g., samples) provided to the laboratory. It is extremely important that the project manager communicate to the laboratory all the requirements relevant to the project. This includes the number of samples and their matrices, sampling schedule, parameters and constituents of interest, required analytical methodologies, detection limits, holding times, deliverables, level of QA/QC,and required turnaround of analytical results. Field and Laboratory Quality Control General Quality control checks are performed to ensure that the data collected is representative and yalid data. Quality control checks are the mechanisms whereby the components of QA objectives ore monitored. Examples of items to be considered are as follows: 1. Field Activities: • Use of standardized checklists and field notebooks; • Verification of checklist information by an independent person; • Strict adherence to chain-of-custody procedures; • Calibration of field devices; • Collection of replicate samples; and Submission of field blanks, where appropriate. 2. Analytical Activities: CGRS;.Inc. • Method blanks; • Laboratory control samples: • Calibration check samples; • replicate samples; • Matrix-spiked samples; • "Blind"quality control samplers; • Control charts; • Surrogate,samples; ks_ • Zero and span gases; and • Reagent quality control checks. Blind Duplicates Blind duplicate samples will be collected for 10% of the samples collected or once per site, whichever is greater. These blind duplicate samples will be forwarded to the laboratory as a check of laboratory reproducibility. Equipment(Rinseate)Blank • The equipment (rinseate) blank is designed to identify potential cross-contamination in the field between sample sources due to deficient field cleaning procedures. This blank also addresses field preservation procedures, environmental site interference, integrity of the source blank water for field cleaning and those concerns singularly addressed by the travel blank. Equipment blanks are taken once per site, when equipment is cleaned in the field. This provides a quality control check on field cleaning procedures. Field Blank Field blanks are used to evaluate the sample container filling procedure, the effects of environmental contaminants at the site, purity of preservatives or additives and those concerns uniquely addressed by the travel blank. Field blanks are taken downwind of the most contaminated area of the site by filling laboratory cleaned and prepared sample containers (appropriate for the parameters group) with deionized or organic-free water supplied by the laboratory. The blank sample container is then sealed, grouped,transported and stored with the real samples collected for the same parameters group: CGRS,Inc. ` Travel(Trip)Blanks The travel blank is designed to address interferences derived from improper sample container cleaning preparation, contaminated source blank water, sample cross-contamination during storage/transport and extraneous environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Travel blanks are composed in the appropriate sample container using source blank water. Preservatives or additives are added if required for the parameters group. Travel blanks are then sealed and stored in the ice chest where real samples will be stored and transported. Travel blanks are to originate at the laboratory providing the blank water for the equipment and field blanks. Protocol for Analyzing Blank Samples If used, the equipment blank will be analyzed first. If contamination is found to be present, the field blank will then be analyzed. If the equipment blank is not used, the first blank analyzed will be the field blank. If any blank is found to be contaminant-free,thesequence of analyses will be terminated. • f , f :. • • ATTACHMENT B • tzn QUALITY ASSURANCE PROJECT PLAN E -. • Table of Contents , ' 1.0 Project Management 1 1.1 Introduction • 1 1.2 QAPP Distribution List 1 1.3 Project Organization 1 1.4 Problem Definition/Background 2 1.5 Intended Usage of Data 2 1.6 Project Task/Description 2 1.7 Measurement Quality Objectives 3 - 1.8 Data Quality Objectives 3 1.8.1 Data Precision and Accuracy 4 1.8.2 Data Representativeness 4 1.8.3 Data Comparability ' 4 1.8.4 Data Completeness 5 1.9 Special Training Requirements - 5 - 1.10 Documentation and Records 5 • 2.0 Measurement/Data Aquisition - 6 . 2.1. Sampling Process Design 6 • 2.2 Sampling Method Requirements 7 2.3 Sample Handling and Custody Procedures 7 2.3.1 Sample Identification 7 • 2.3.2 Sample Method Requirements' 7 2.3.3 Sample Custody 7 2.3.4 Chain of Custody Records 8 2.3.5 Transfer of Custody and Shipment 8 2.3.6 Laboratory Custody Procedures 9 2.4 Laboratory Deliverables 9 2.5 Field and Laboratory QA/QC Procedures 10 2.6 Instrument/Equipment Testing, Inspection and Maintenance Requirements 10 2.7 Instrument Calibration and Frequency 10 2.8 Inspection/Acceptance Requirements 11 2.9 Data Acquisition Requirements 11 - 2.10 Data Management ' 11 3.0 Assessment/Oversight 12 3.1 Assessment and Response Actions 12 3.2 Reports - 13 4.0 Data Validation and Usability 14 ' 4.1Data Review Validations and Verification - 14 `' 4.2 Validation and Verification Methods 14 4.3 Reconciliation with DQO's 14 • Table of Contents - Continued Figures Figure 1 -Area Use and Site Condition Map Figure 2—Monitoring Well Placement Map Figure 3—Monitoring Well Construction Detail Table Table 1—Summary of Parameters, Sample Containers,Holding Times and Analytical Methods Table 2—Contents of DigitatAnalytical Deliverables Appendix Appendix A—Resumes - • I r { k-: QUALITY ASSURANCE PROJECT PLAN (QAPP) FOR THE VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO 1.0 Project Management 1.1 Introduction This Quality Assurance Project Plan (QAPP) presents the organization, objectives, planned activities and specific Quality Assurance (QA)/Quality Control (QC) procedures associated the Varra Coal Ash Project. Specifically it is being prepared as part of a column leaching study. All QA/QC procedures will be structured in accordance with applicable technical standards. This abbreviated QAPP bas been prepared in accordance with the U.S. EPA RCRA QAPP Instructions, t. and other relevant guidance documents. 1.2 QAPP Distribution List The following have been provided copies of the work plan and this QAPP. • a) .Brad Janes—Varra Companies b) Chris Varra—Varra Companies c) Christina Kamnikar—DMG d)' George Moravec—CDPH&E e) Harry Posey—DMG f) Jerald Ritenour—Barringer Laboratories g) Ken Niswonger—CDPH&E h) Roger Doak—CDPH&E i) Trevor Jiricek—Weld County Health 1.3 Project Organization Name/Affiliation Title/Responsibility Chris Varra—Varra Companies Petitioner Christina Kamnikar—DMG MLR Permit Review . George Moravec—CDPH&E Water Quality Overview Glen Mallory—CDPH&E Certificate of Designation Review Jerald Ritenour—Barringer Laboratories Laboratory Project Manager Joby Adams—CGRS, Inc. Project Manager, Ken Niswonger—CDPH&E Technical Oversight Robert Zielinski—USGS Column Leaching Method Oversight Roger Doak—CDPH&E Certificate of Designation Review Trevor Jiricek—Weld County Health USR/Certificate of Designation Review Varm Companies Quality Assurance Project Plan Page 1.4 Problem Definition/Background Varra Companies has submitted a proposal to reclaim approximately 11 acres of a mined out, flooded gravel quarry using coal ash as fill material. Numerous permits have been submitted proposing bench scale testing followed by a small scale field study to evaluate the economic and technical feasibility of using coal ash as fill material in saturated conditions. The'proposed field study consists of placing 400 tons of coal ash below the water table at the Varra gravel quarry in Weld County,Colorado Five different leaching experiments were conducted in order to evaluate coal ash leaching potentials. Two of the leaching experiments compared element and compound water quality for different pH.ranges relative to effluent pore volume. However, the data generated from the ( different leaching tests were not comparable to each other or to water quality standards. It was recommended by various member of the Colorado Department of Public Health and Environment (CDPH&E) that additional leaching tests be performed that would simulate, to the extent possible, conditions that would be encountered at the Varra property. A modified form of ASTM D 4874-95 Standard Test Method for Leaching Solid Material in Column Apparatus was used to simulate field conditions. Testing results have been submitted as part of a permit application to conduct the pilot study. 1.5'Intended Usage of Data •CGRS will use the data obtained in a variety of ways. The major applications of data are: Health and Safety—Data are used to determine concentration of chemicals to which workers will be or are being exposed. Site Characterization—Data are used to determine local physical and chemical properties of soil and water at the Varra property. Samples of soils,surface and ground water will be analyzed in the field using portable or transportable instruments or sent to the laboratory for certified chemical analyses. Project Feasibility—Data obtained from the pilot study will be used to assess the feasibility of large scale reclamation using coal ash. Risk Assessment—Data are used to calculate the effects of target analytes upon human health and other environmental receptors. Column study data will be compared to field data to assess the validity of column leaching studies and analytical solute transport and groundwater flow solutions. 1 1.6 Project Task/Description The purpose of the pilot project is to determine the feasibility of using coal ash as fill material in " saturated conditions. This project will be accomplished by submitting required permits in combination with conducting bench scale leaching tests and a small scale ash burial and water quality monitoring program. The permit submittals are required as coal ash is classified as a solid waste and as such is subject to regulation under RCRA. The laboratory testing and proposed field tests are being conducted to fulfill permit requirements as well as provide assurance to all parties involved the placement of coal ash below the water table at this specific site will not cause adverse environmental impacts. The scope of work for this project involves, development of Health and Safety and site-specific work plans, field investigations, laboratory analysis of water samples, analysis of hydraulic and hydrogeologic properties,and the preparation of a report detailing the results of the investigation. • Varra Companies Quality Assurance Project Plan Page 2 • Project Timetable Activity Projected Start Date Anticipated Completion Date • 1 Submit supplemental information 03/2000 07/2000 and finalize permits to regulatory agencies Install pre-project monitoring wells Upon receipt that project Two week after notice is technically feasible • from CDPHE • • Finalize CD and USR submittals 09/2000 10/2000 Construct pilot trench/monitoring 10/2000 11/2000 network Conduct monitoring 11/2000 -11/2001 Submit monitoring information to 11/2000 12/2001 regulatory agencies 1.7 Measurement Quality Objectives • -Quality assurance (QA) is a management system for ensuring that all information, data, and ' decisions based upon the interpretation of the analytical data are technically sound and properly documented. Quality control (QC) is the mechanism whereby the QA system is ensured. The QA system is presented in this QAPP. The goal of the environmental data collection is to produce data capable of withstanding scientific scrutiny and of a quality appropriate for a specific task. This will allow CGRS, Inc. to fully assess the impact of past activities and target analytes, i.e., identification, i quantification,and delineation of the extent. Data quality refers to the level of uncertainty associated with a data set. Data quality objectives (DQOs) for each task will reflect the amount of uncertainty in the data that will be acceptable to meet the goals of the program and the objectives of the task. Project and task DQOs are discussed in Section 1.8. Techniques to validate and verify the quality of the data are presented in Section 4.2. Quality assurance objectives differ for individual sample matrix groups and parameters by site. The QA objectives will be based on a common understanding of the intended use of the resulting data, available laboratory procedures, and available resources. Special attention must be paid to the detection limits and holding times. These limits are sometimes insufficient for the analysis of drinking water,groundwater, and/or soils. 1.8 Data Quality Objectives - DQOs are qualitative and quantitative statements that specify the quality of the data required to support decisions made during the project. DQOs are applicable to collection activities and are Varra Companies Quality Assurance Project Plan Page 3 based on the end use of the data being collected. DQOs will be described in detail within individual sampling and analyses plans (SAPs). Precision, Accuracy, Representativeness, Completeness and Comparability (PARCC) parameters are indicators of data quality. The end use of the measurement data should define the necessary PARCC parameters. Numerical precision, accuracy, and completeness goals must be established in each site SAP and will aid in selecting the measurement methods. 1.8.1 Data Precision and Accuracy Precision is a measurement of the reproducibility of a measurement under a given set of conditions. The closer the numerical values of the measurements, the more precise is the overall measurement. Precision will be stated in terms of the standard deviation for three or more measurements of the percent difference for two measurements, depending on the necessary precision of a particular study. Laboratory precision will be within established control limits for a particular analytical method, if known. For chemical analyses, laboratory precision will be assessed using laboratory- spiked samples Accuracy is defined as the degree of agreement between the measurement and average of • measurements of measurements for a parameter and the accepted reference or true value. It will be expressed as the difference between the measured value(X) and the reference or true value(T), the difference in percent between two values, 100 (X-T)/T, or a ratio of the two values,X/I', depending upon the study. Laboratory accuracy will be within established control limits for a particular method when known. For chemical analyses, laboratory accuracy will be assessed using laboratory-spiked samples. 1.8.2 Data Representativeness Representativeness expresses the degree to which data accurately and precisely represent a characteristic of a population, parameter variations at a sampling point, a process condition or an environmental condition. Accurate sample collection requires that samples be undisturbed and representative of the native substance being sampled. All measurements will be made so that the results are accurately representative of the media (air, biota, soil or water) and specific time, place and conditions being measured. Representativeness of a sample will be ensured by systematic, documented and(whenever possible) random sampling designs. Project Managers designing SAPs will ensure that, whenever possible, probabilistic sampling designs are used and that a sufficient number of samples are collected to • meet the DQOs of the project. To minimize the introduction of error during the field program, general requirements for sample collection and handling have been devised and are described in the QAPP. Specific procedures will be presented in respective SAPs. 1.8.3 Data Comparability Data comparability expresses the confidence factor by which one data set can be compared to another. All data will be calculated and reported in units consistent with all the sites involved and • the regulatory standards allowing for comparability of databases within the project. Data comparability-will be achieved using standard field and analytical methods or written procedures. Data with different quality objectives will be compared in a statistically defensible manner outlined when the data are presented.Factors that will ensure data comparability are summarized as follows: • Standard procedures for sample collections; • Standard sample handling and transport; Varra Companies Quality Assurance Project Plan • Page 4 { • Uniform sampling containers (i.e. containers that are supplied, constructed, cleaned and prepared identically); • Standardized forms and/or electronic data storage devices for recording field and analytical data, prepared sample identification tags, and Chain-of-Custody (COC) records; • Field team performance observations; • • Field and laboratory instrument performance; • Standardized protocols for field and laboratory instrument calibrations using certified standard solutions; • Data documentation audits to determine data adequacy; and • Known and validated uncertainties for field and analytical data. • 1.8.4 Data Completeness Completeness is defined as a measure'of the amount of valid data obtained from a measurement system compared to the amount that was expected under correct normal conditions. Field sampling • conditions are unpredictable and non-uniform. Other problems affecting field completeness will be equipment/instrument malfunctions and problems with sample recovery. These problems will be reduced by training field team members to perform basic repairs and by supplying spare parts and equipment at the field site. Analytical completeness is affected by a sample not analyzed before its holding time is expired;if it is damaged during handling, shipping, unpacking, or storage; or if the laboratory data cannot be validated and the sample cannot be reanalyzed. Critical samples are those samples that are essential to the successful completion of the project. The completeness goal for crucial samples is 100%. The project team will present any deviation from the sampling plan. 1.9 Special Training Requirements No special training requirements or certifications are required for this project except for the 40-hour • HAZWOPER class and annual refreshers. Resumes of CGRS personnel who may be involved with this project are presented in Attachment A. 1.10 Documentation and Records • Activities that affect data and data quality and that potentially will be used as evidence will be documented. The project manager will maintain a supply of and will control these documents. The following documents will be used if appropriate: > Sample labels; > Chain-of-Custody records; > Sample analysis request sheets; • • > Electronic data storage devices and/or field logbooks; > Calibration logbooks; • > Shipping logbooks; ➢ SAPs; • ➢ QAPP; > Progress and interim reports; Varra Companies Quality Assurance Project Plan Page 5 > Information written on photos, maps and drawings; > Laboratory data packages; and Data qualification packages. All information pertinent to field sampling operations will be recorded including all field observations and in situ measurements necessary to explain and reconstruct sampling operations. The primary repository for the information will be a Dell computer backed up with a field logbook. Each sample will be identified with a label. Labels will be placed on the containers prior to or at the time of sampling. Samples requiring refrigeration will be placed in a chest immediately after 1 collection. A description of sampling locations, sample containers, time of collection,preservations if any used and various other pertinent facts relative to sample collection and preservation will be recorded in the field logbook. • Sample/data collection activities will be documented fully and accurately. Log books will be used to record mapping locations and specific considerations associated with sample acquisition, preparation, transportation, receipt by a certified laboratory and analysis to be performed on the sample.Sample locations will be surveyed so the exact sample locations will be known. In addition, logbooks will be used to record when and where photographs, temperatures, pressures, etc. are taken:Field sampling team will have at least one person designated as the Site Supervisor who will be thoroughly familiar with documentation procedures.The site supervisor will personally perform, • or at least oversee, the completion of documents that accompany the samples. For consistency in data recording, whenever possible, one person on each field sampling team will record data. Using one person to record data will permit timely recording of observations, enable more data to be recorded,and minimize any chances of contaminating field records. } Documentation in logbooks, sample tags, labels, custody seals and other accountable serialized documents will be completed with permanent reproducible ink. None of these documents will be destroyed or thrown away, even if the comments are illegible or if inaccuracies are:recorded that must be replaced. The documents will be marked "VOID" and maintained by CGRS. CGRS will hold all documentation for 5 years subject to the availability of any other authorized person. Document control means that controlled documents will receive review and concurrence as appropriate, the distribution of the documents will be recorded and revisions will be made in all distributed copies. The preparation, issuance and revisions of documents that specify quality C requirements or prescribed activities affecting quality will be controlled to ensure that correct 1.:1; documents are used. Control will consist of item identification, secure storage and documented distribution. fr' 2.0 Measurement/Data Acquisition 2.1 Sampling Process.Design i The pilot trench will be constructed downgradient of the proposed large scale reclamation as shown on Figure 1. The trench will consist of two coal ash cells with a native soil divider as shown on Figure 2. The ash will be obtained from Public Service Company's Cherokee power plant and will consist of a combination of Class F silo ash with gypsum and Cherokee 4 fly ash with sodium. Monitoring wells will be installed within the ash deposit(s) and compliance.points or sentinel wells will be installed no less than 50 feet downgradient of the trench. It is anticipated that a minimum of eight wells will be installed up, down and cross gradient to the trench; however, additional wells Varra Companies Quality Assurance Project Plan Page 6 will be installed as necessary to adequately monitor variations in water quality and groundwater flow direction. Water quality samples from site monitoring wells on a periodic basis in order to evaluate possible changes in water quality. The sampling frequency will be weekly for the first month, biweekly for the second month, monthly for the third month and then quarterly until project termination. 2.2 Sampling Method Requirements All groundwater samples will be obtained using protocol presented in the Work Plan. All samples will be analyzed after the 0.45 µm filtration with the exception of field parameters. The samples will be collected in appropriate sample containers and will be transported to the laboratory under strict chain-of-custody procedures and holding times. Samples will be analyzed for alkalinity as bicarbonate and carbonate, chloride, fluoride, phosphorus, nitrate, nitrite, and sulfate along with other metals aluminum, antimony,arsenic,barium,beryllium,boron,calcium,cadmium,chromium, cobalt, copper, iron, lead, lithium, manganese, mercury, molybdenum, nickel, phosphorous, potassium, selenium, silver, thallium, titanium, uranium, vanadium and zinc. Field parameters such as pH, conductivity and temperature will be measured with a HyDAC digital conductivity, pH and temperature meter. 2.3 Sample Handling and Custody Procedures 2.3.1 Sample Identification A sample identification scheme will be used that maintains consistency for the names of water quality samples, as well labels affixed to each sample container, and entered on to the Chain-of- Custody(COC)forms. The following scheme will be followed: 1. Samples from the field study will be identified by the monitoring well it was obtained from. For example water obtained from monitoring well MW-1 would be identified as PT-MW-1. 2. Water samples obtained from the gravel quarry will be identified as Pond. 2.3.2 Sample Method Requirements Analytical procedures for water and soil samples will conform to the USEPA guidelines described in SW 846 (Test Methods for Evaluating Solid Waste/Physical/Chemical Methods, 3ri ed.). Table tti 1, presents the analyses that are anticipated on the project. 2.3.3 Sample Custody Strict chain-of-custody (COC) protocol will be maintained throughout the life of the field program and will be controlled through the use of a COC Record supplied by the laboratory. The following procedures will be used to document,establish,and maintain custody of field samples: • Sample labels will be completed for each sample using waterproof ink; making sure that the labels are legible and affixed firmly on the sample container; • All Sample-related information will be recorded in the project log book; • The field sampling technician will retain custody of the samples until they are transferred or properly dispatched to a laboratory; and, • As fieldwork is conducted the on-site CGRS technical lead will determine whether these procedures are being followed, if corrections need to be made, and if additional samples are required. Varra Companies Quality Assurance Project Plan Page 7 • 2.3.4 Chain of Custody Records A Chain of Custody Record will be maintained in the field for all samples to be shipped to the laboratory for analysis.The three lines of information to be entered into the COC box titled"Project or P.O.4!"are: Line 1. Client Name, i.e. "Varra Companies" Line 2. Project Name;i.e. "Varra Coal Ash Project" Line 3. Site Number, i.e."2755aa" The three lines of information will be provided on the laboratory paper(hard copy) reports as a page header,and on the electronic deliverables as three individual fields in each analytical record. • The "Sample Identification" entries to the COC will be completed as described in Section 2.3.1 of • this QAPP. 2.3.5 Transfer of Custody and Shipment Due to the evidentiary nature of field sample collection,the possession of samples must be traceable from the time the samples are collected until they are introduced as evidence in legal proceedings. A sample is defined as being under a person's custody if any of the following conditions exist: (1) it is in their possession, (2)it is in their view after being in their possession,(3) it is in a secure locked location after having been in their possession, and (4) it is in a designated secure area. The following procedures will be used in transferring and shipping samples: • Field personnel will maintain detailed notes in field logbooks documenting the collection _ and identification of the.required samples. The logbooks will be checked against the COC records for completeness and traceability. • A COC record will accompany all sample shipments. When transferring samples, the individuals relinquishing and receiving will sign, date, and note time on the record. The COC documents transfer of sample custody from the field-sampling technician to another person or to the laboratory. • Each cooler is to contain samples from one site. No mixing of samples from multiple sites will be allowed in a given cooler. • Samples will be properly packaged for shipment and shipped to the laboratory for analysis with a separate signed COC record enclosed in each sample box or cooler. Two copies of this record will accompany the samples to the laboratory. The laboratory maintains one file cop y, and the completed original will be returned to the project manager as part of the final analytical report: This record will be used to document :::, sample custody transfer from the field-sampling technician to the laboratory or to the CGRS offices. Just prior to shipment'to the laboratory, coolers will be secured with custody seals. • Whenever samples are split with a facility operator or government agency, a separate COC record will be prepared for those samples and so marked to indicate with whom the samples are being split. • The COC record showing identification of the contents will accompany all packages. The original record will accompany the shipment and the field team leader will retain a copy. • A bill of lading will be used for all samples sent by common carrier. Receipt of bills of lading will be retained as part of the COC permanent documentation. Varra Companies Quality Assurance Project Plan Page 8 2.3.6 Laboratory Custody Procedures The laboratory, at a minimum, will check all incoming samples for integrity and note any observations of the original COC record. Each sample will be logged into the laboratory-system by assigning it a unique laboratory identification number. This number and the field sample identification number will be recorded on the laboratory report. The original COC.record will be returned to the CGRS project manager for.filing. The laboratory sample custodian will use the following procedures to maintain the COC records once the samples arrive at the laboratory. • The samples received by the laboratory will be cross-checked to verify that the information on the sample label matches that on the COC record included with the sample shipment. • The "Received by Laboratory" box on the COC record will be signed on receipt. Any discrepancies between the COC record and the shipment contents will be resolved as soon as possible through communication with CGRS personnel.• • The status of the sample receipt and analysis will be tracked within the analytical , laboratory by a laboratory information management system (LIMS) or equivalent computerized management system. For data that are input by an analyst and processed using a computer, a copy of the input data will be kept and identified with the project number and any other needed information. The samples analyzed will be clearly noted and the input data signed and dated by the analyst. 2.4 Laboratory Deliverables The laboratory is required to submit EPA QC Level III data packages (CLP-equivalent) to CGRS, Inc. within 21 days from the date of acceptance on the Sample Receipt Form. Details of the deliverables are presented below. • Sample Receipt - The laboratory will complete and submit a "Sample Receipt" form for all sample shipments received. The purpose of the form is to note problems with sample packaging, COCs, and sample preservation. Problems noted on the form will be communicated to CGRS,Inc. as soon as possible. • Reporting of Analytical Results — For each analytical method performed, the laboratory will report all analytes as detected concentrations or as less than the specific limits or quantification. All samples with out-of-control spike recoveries being attributed 'to matrix interferences should be designated as such. All soil/sediment and solid..waste samples should be reported on a dry-weight basis with percent moisture also reported. Also, report dates of extraction/preparation, dates of analysis, and dilution factors when applicable. An electronic deliverable (LIMS) will_be provided that conforms to the • CGRS project, data requirements. An example of the data deliverable is provided as Table 2. • Internal Quality Control Reporting — Internal QC samples should be analyzed at rates specified in the method (SW-846). At a minimum, QC deliverables will consist of laboratory blank results, surrogate spike percent recoveries, results of IC/ICP analyses, laboratory control sample data, laboratory duplicate results, and if requested, calibration and tuning data. The internal QC data will not be delivered unless requested by Varra or CGRS personnel. • Varra Companies Quality Assurance Project Plan Page 9 • 2.5 Field and Laboratory QA/QC Procedures Quality control checks are performed to ensure that the data collected are representative and valid. Quality control checks are the mechanisms whereby the data quality objectives are monitored. The quality control samples to be collected on the project are described below. • Duplicate Samples — As a check for laboratory reproducibility, blind duplicate samples (unknown by the laboratory to be duplicates) will be collected and submitted to the laboratory at a rate of one for every 10 water samples collected, or once per site, whichever is greater. • Field Blank Samples —To evaluate sample bottle filling procedures and the effects of environmental contaminants at the site, one VOA water sample per site is collected in laboratory-cleaned and prepared containers of deionized or organic-free water supplied by the laboratory. Field blanks are collected downwind of the most contaminated area within a site. The sample is sealed, labeled and shipped with the real samples collected for the same parameter group. • Travel (Trip) Blanks — Trip blanks are intended to address interferences derived from improper sample container cleaning, preparation, contaminated source blank water, sample cross-contamination during storage and shipment, and environmental conditions affecting the sampling event to and froth the site, including delivery to the laboratory. Trip blanks will originate at the laboratory and will consist of VOA vials filled with source blank water, and will be sealed and stored in the cooler where real samples will be stored and shipped. • Equipment Blanks — Rinseate blanks, intended to provide quality control on field cleaning procedures,will be collected once per site. 2.6 Instrument/Equipment Testing,Inspection and Maintenance Requirements SOPs or manufacturer instructions for calibration of equipment will be'referenced or included in each site SAP. These procedures for calibration will conform to manufacturer's recommended procedures or explain the deviation from said procedures. A copy of the procedure should be kept with the instrumentation. Calibration standards will be traceable to the National Institute of Standards and Technology (NISI) or other nationally recognized sources. The information will be recorded in the equipment calibration logbook. The date of calibration, an identification of standards used, the names of personnel performing calibration, the results of any calibration, and-a list of any corrective actions taken will be recorded in the calibration logbook. One logbook will be • maintained for each piece of equipment or device. A list of field equipment used in a sampling task will be included in each site,SAP. A review of each site SAP by the Project Manager will ensure that measuring and test devices are of the proper type,range,and accuracy for the test to be performed within the established DQOs of a task. All measuring and test devices requiring calibration will be marked with calibration due dates. Documented and approved laboratory procedures will be used to calibrate analytical instruments. If necessary, at the discretion of the Program Manager, audits of instrument calibration laboratories will be performed to ensure proper calibration of instruments. Audits conducted by the Project Manager may be used to satisfy the audit requirements. 2.7 Instrument Calibration and Frequency This section provides guidance for control, calibration, and adjustment of field and laboratory measuring and testing instruments. Once calibrated, these devices must then be transported and handled to prevent the device from becoming out of calibration. Varra Companies Quality Assurance Project Plan t Page 10 1 A calibration program will control measuring and test equipment used in the field and laboratory. Equipment of the proper type, range, accuracy and precision will provide data compatible with project requirements and desired results. Calibration of measuring and test equipment may be performed internally using reference standards or externally by agencies or manufacturers. Data'generated from equipment that has failed calibration shall be evaluated and qualified for use on the project. The evaluation/qualification process is the responsibility of the Project Manager. The method of qualification and the results of the data evaluation will be documented. 2.8 Inspection/Acceptance Requirements for Supplies and Consumables No special requirements are needed. 2.9 Data Acquisition Requirements Paper and electronic transfer of data will be conducted with multiple levels of redundancy. Data will be verified manually and at time electronically at each stage of transfer to ensure accuracy. The flow data from collection through storage is described in the CGRS data management system. Data validation is the process by which a sample measurement, method, or piece of data is deemed useful for a specified purpose. Data validation methods will depend on the type of study that generated the data,the type of sampling,the test method, and the end use(DQOs)of the data. The Project Manager is responsible for specifying (in the site-specific SAP) the systematic process to be used to review the body of data against a set of criteria to assure that the data are adequate for their intended use. The process shall consist of data editing, screening, checking, auditing, , verification, certification, and review. Criteria for accepting or rejecting data are dependent on the DQOs for a particular task. Data qualified for use in one task may not be acceptable for use in another task. 2.10 Data Management • The data management system provides control and retention for project-related information. Data control includes receipt from external sources, transmittal, transfer to storage and indication of record status. Retention includes receipt at storage areas, indexing, and filing, storage and maintenance and retrieval. The control of records provides for the flow of information both internal and external to CURS. Typical controls applied by CGRS for the various record systems are described in the following sections. Project related materials which are incoming to CGRS in the form of correspondence, drawings, sketches, logs, authorizations, or other information shall be routed to the project manager after the original is marked with the date received by.a secretary assigned this duty. The manager shall then mark the original with the project number and determine which personnel shall review the incoming materials and shall route the materials accordingly. • As soon as practical, correspondence originals shall be placed in the project file. If the correspondence is required by CGRS personnel for reference, a copy should be made rather than • holding the original. Client drawings should be placed in the'project file when they are received. The file index shall indicate the date received, drawing number and revision number. If revised issues of drawings pertinent to a project are received, superseded drawings shall be marked "void," "see revision," or with a similar notation. Varra Companies Quality Assurance Project Plan Page I i y • Project-related materials transmitted external to CGRS including correspondence, reports, drawings and sketches shall be appropriately reviewed, approved and, as required, signed prior to transmittal. Project correspondence shall, as a minimum, be signed by the project manager or an individual assigned this responsibility by the project manager. If joint signatures are desirable, the originator • of the correspondence, when different than management, may also sign. Outgoing project correspondence and reports should be read, as appropriate, by the project manager prior to mailing. If, because of scheduling difficulties, it is necessary to mail • correspondence prior to the project manager reading the final copy, the department manager or office manager shall read the correspondence.A copy shall then be routed to the project manager. [[ Drawings issued in final form shall be approached prior to issuance by'the project manager or a member of the project team delegated this responsibility by the project manager. Drawings which are issued "preliminary" do not require approval prior to issue; however, they shall be clearly • marked to indicate preliminary status. Drawings issued as a separate transmittal shall be accompanied by a transmittal letter listing each drawing .by number. If a drawing is "preliminary,"it shall be stated in the letter.A copy of the drawing may be maintained by CGRS with the letter of transmittal, if deemed necessary by the project manager. If an original drawing is transmitted to the client at their request, a good quality reproducible of that drawing shall be prepared prior to transmittal and filed in the CGRS original drawing file maintained by Drafting personnel. The transmittal letter shall explicitly state that the original drawing has been transmitted to the client. Records submitted to the project file, with the exception of correspondence, should be bound, placed in folders or binders, or otherwise secured for filing. Folders or binders containing calculations and their checkpoints shall be marked with the title of the calculations. ' 3.0 Assessment/Oversight 3.1 Assessment and Response Actions The project manager will conduct an audit of the field activities fop this project as requested by • authorized review personnel. An audit will be conducted on field activities as field data are generated, reduced, and analyzed. Items will include, but are not limited to, calibration records of field equipment, daily entries in ,logbooks, decontamination procedures, photographs, video logs, data logs, drilling, well installation, and sampling. The primary objective of the field audit is to determine the status of sampling operations. Emphasis is placed on: • Verifying that operational aspects and procedures are in accordance with the protocols and QA/QC plan; • Verify the collection of all samples, including duplicates and field blanks; • 'Verifying that documentation is in order and sufficient to establish the collection location of any sample collected; Varra Companies ' Quality Assurance Project Plan Page 12 • Determining discrepancies that exist and initiating corrective action, as appropriate;and • Collecting independent samples. Records inspected include: • COC forms; • Sample logs; • Sample shipping logbooks; • Sample collection logbooks; • SAPs; and • SOPs and sampling procedures. After completion of the surveillance, any deficiencies will be discussed with the field staff and corrections will be identified. If any of these deficiencies could affect the integrity of the samples (( being collected, the audit team will inform the field staff immediately so that corrective action can be implemented immediately. The project manager will submit a surveillance report to the manager of the task and to the organization or subcontractor that was observed. 3.2 Reports Periodic reports on the performance of the QA program may be prepared by the project manager. When appropriate, analytical laboratory QA/QC reports will be included. At the completion of a task and after data verification and validation, all QC data will be sent to the files. Results from a data collection activity will be reported in units consistent throughout a task. Data from each different task will be compared using referenced statistical methods when data are presented. When applicable, for example, presenting data on chemical concentrations, the method detection limit, the environmental background concentration, and any applicable State or Federal regulatory limits will be presented with the analytical data. At minimum,laboratory reports will contain the following information for sample analysis: • • Title of project and project identification number; • Name of report; • Date report was prepared; • Name, address, and telephone number of the laboratory; • • Sample identification number(s); Matrix of samples; • Level III—Method blanks, blank/spikes, surrogates, matrix spikes, control charts, matrix spike duplicates, duplicates, GC/MS tuning information, raw data, internal standard area • summaries, and initial and continuing calibration data; • Level IV — When requested a data package as thorough as those required by the CLP shall be delivered. The package shall include a summary and the remainder of the package, including initial and continuing calibration, matrix spikes, matrix spike • duplicates, as applicable, blanks; duplicates, surrogate recoveries, chromatograms, mass spectra, laboratory control samples, and absorbance data. For methods that are not defined by the CLP, the .calibration information, method blanks, blank/spikes, Varra Companies Quality Assurance Project Plan Page 13 f chromatograms, absorbance, matrix spikes, and matrix spike duplicated should be included; I • Level V—Method blank data and the control chart from the blank/spike; • Date of analysis was performed; • Signature of laboratory manager; • Method precision,accuracy, and completeness attainable; • QA checks to be run as part of the method; and • Limitations of the method. 4.0 Data Validation and Usability 4.1Data Review Validations and Verification Data reduction refers to computations and calculations performed on data. This includes,but is not limited to, summary statistics, standard errors, confidence limits, test of hypothesis relative to the parameters, and model validation. Paper and electronic transfer of data will be conducted with multiple levels of redundancy. Data will be verified manually and at times electronically at each stage of transfer to ensure accuracy. The flow data from collection through storage is described in the CGRS data management system. Data validation is the process by which a sample measurement, method, or piece of data is deemed useful for a specified purpose. Data validation methods will depend on the type of study that generated the data,the type of sampling,the test method,and the end use(DQOs)of the data. The project manager is responsible for specifying the systematic process to be used to review the body of data against a set of criteria to assure that the data are adequate for their intended use. The process shall consist of data editing, screening, checking, auditing, verification, certification, and review. 4.2 Validation and Verification Methods The project manager will perform the final review and approval of the data prior to it being entered into the last system as valid. The project manager will look at field duplicates, matrix spike/matrix duplicates, lab blanks and lab duplicates to ensure they are acceptable. The project manager will also compare the sample descriptions to the field sheets for consistency and will ensure that any anomalies in the data are appropriately documented. 43 Reconciliation withDQOs l Once the data results are compiled, the project manager will review the field duplicates to determine if they fall within the acceptance limits as defined in the QAPP. Completeness will also be evaluated to determine if the completeness goal for this project's requirements as outlined in the QAPP (including the accuracy for lab spikes) the data may be discarded and re-sampling may occur. The project manager will be responsible for determining the cause of failure and make the decision to discard the data and re-sample. If the failure is tied to the analysis calibration and maintenance techniques will be reassessed as identified by the appropriate lab personnel. If the failure is associated with the sample collection and re-sampling is needed the samplers will be retrained. Varra Companies Quality Assurance Project Plan Page 14 • ,' • • i :..V eZ ----- • �\)j r C-- (%-a?ItT;; :....2L- . • I� -_ �, 0 o / �'_ --::--/:,----;::" -� * :.. : l iil:1 . o •r (------v ,. ,...lit 4141= .. '� 4N/to tie.own M.)e Ma e1C�IrrCVK�G�� x�+7ss.2 1111 rnLaarvr. . 0 / • � 1 , �i 1i;1 :Ivo f k X4789.5 '� W . eco ca Ra a.re r • fJLWeL • EXHIBIT D -Z-V“.' �"'/ COAL ASH TRENCH AND MONITORING ..- w7v=xce1 rag Iac,— WELL LOCATION PLAN ' , J7M rm." Of Colt GO Ala CS 5!� 1 Q e MIL-4.0 Gccwrrica.etr� cvrunr.srcwr�•� . W ca n......,11..1 ORw""/4 I - • J-/14R'-O,IN I XHIBIT B IDEX MAP FIGURE 1 [- , AREA USE AND SITE CONDITION MAP VARRA COAL ASH PROJECT WELD COUNTY, COLORADO LEGEND: 7_ EnvironmentalPROPOSED MONITORING , Gi Services . .WELL LOCATION INFERRED GROUNDWATER APPLICANT: ROW DIRECTION 1"=APPR( VARRA COMPANIES 12910 WELD COUNTY ROAD 13 O SOIL SAMPLE LOCATION LONGMONT,COLORADO 80504 POND SAMPLE LOCATION AFTER: NELSON ENGINEERS 640 GREELEY NATIONAL PLAZA GREELEY, COLORADO 80631 PHONE 356-6362 • - NESTED WELL SET NE SW TRENCH DEPTH ESTIMATED AT 10'BGS • • Ar / _., -\\\ \\\ \\\ \\\ \\\ / ..... __ A (PIERRE SHALE) - • A 100' 1 - NOT TO SCALE LEGEND 2 v/A NATIVE SOIL FIGURE - k-_-_-_:d FLY ASH MONITORING WELL PLACEMENT VARRA COAL ASH PROJECT WATER TABLE SURFACE WELD COUNTY, COLORADO = MONITORING WELL IS SCREENED PROJECT NO. PREPARED BY c (DASHED AREA REPRESENTS SCREENED INTERVAL). ,. 2755aa RACAD CG RS DATE REV(EWED BY COLORADO GROUNDWATER 6/19/00 - RESOURCE SERVICES TYPICAL MONITORING WELL VENTED CAP LOCKING STEEL CASING mom- (4"DIAMETER) 'max MTh; la Mb 2'IDSCH 40 PVC RISERWin A•4i !iilii}; GROUT Wilt lila } .... ,,,, ..' #10-20 SILICON SAND "" - ... 2'IDSCH40-PVC FACTORY SLOTTED SCREEN i (0.1 SLOT) ... ....-- .. ,,, - ,,, . ..... ..... iii \\\ iii \\\ /// \\\ iii \\\ /// \\\ /// \\\ • 6-1/4" FIGURE 3 MONITORING WELL CONSTRUCTION DETAILS VARRA COAL ASH PROJECT WELD COUNTY, COLORADO PROJECT NO. PREPARED BY 2755aa RACAD CGRS DATE REV EWED BY COLORADO GROUNDWATER RESOURCE SERVICES 6/19/00 t/A TABLES • • 1 Table 1 Summary of Parameters, Sample Containers, Holding Times, and Analytical Methods Pdt'.luteter Matrix No and'!`ype.at' Ildldt 'twte{l.) Analyfteal 11+1eth Alkalinity Water. 1-100 ml P,G 14 days cool to 4C SM 2320B Chloride Water 1-200 ml,P,G 28 days no preservative required EPA 300.0 Fluoride Water 1-500 ml,P • 28 days no preservative required EPA 300.0 Sulfate Water 1-200 ml,P 28 days cool to 4C EPA 300.0 Nitrate/Nitrite Water '1-100 m1,P,G 48hours cool to 4C EPA 300.0 I-500 ml P,G Mercury Water 28 days,11NO3 to pll<2 245.1/7170 Total Metals(RCRA) • Water 125-500 ml nalgene 6 months except Mercury at 28 days: For (Red dot) 6010/7000 water,preserved with HNO3,not filtered. Dissolved Metals(RCRA) Water 125-500 ml nalgene - 6 months.except Mercury at 28 days. Filtered 6010/7000 • and preserved in Lab. Anions/General Chemistry Water 250 ml nalgene 28 days • 200 Series Notes: (1)All collected samples to be kept cool(4 degrees C) (2)USEPA Method,SW-846(Revised),1986 • • Table 2 L • Contents for Digital Analytical Deliverables • Ongin of Data • Geoeraied by Generated m Laboratory Name of.. Example of Delivered CURS and Lat by Tech Data Meld Dwgatal Data Entered on f OC Lab COMPANY_NA Varra Companies X SITE_NAME Coal Ash Project X • SITE_NO 2755aa X . SAMPLE_ID1 MW-1 • X SAMPLE_DAT 08/27/97 7 X LAB_ID L15316-01 X MATRIX Water X X METHOD M6010ICP X DATE_ANALY 09/04/97 X ( • ANALYTE Silver,total (3051) X TEXT_RESUL (blank if ND) X NUMBER_RES (blank if ND) X QUALIFIER U X DILUTION 106 X MDL 0.50000 .X PQL 3.00000 X UNITS mg/L X ' DATE_RECEI 09/03/97 X • ( DATE_EXTRA 09/04/97 - X CAS_ 007440-22-4 X • BATCH_ID WG47359 X • • • • • • • 1 • • • APPENDIX A • RESUMES • • • • • JOBY L. ADAMS, P.G. . . cG Joby Adams is co-owner and principal hydrogeologist in the CGRS Fort Collins office. He has experience in both the mining and environmental fields, with background as follows: Specialization • Pipeline facility assessment and remediation design • Finite element and finite difference groundwater flow and solute transport modeling • Air dispersion modeling • Compressible gas flow modeling • Well hydraulics • Water well design and installation . • UST investigation and remediation • Groundwater quality monitoring,sampling, and chemical analysis • Soil vapor surveys (design, investigation and analysis) • • Precision tank and line testing (volumetric and,nonvolumetric) Education_ • M.S. in Hydrogeology-Colorado State University `• B.S. in Geology-Colorado State University National Water Well Association Portable Gas Chromatography Symposium • EPA State UST Programs Symposium • American Society for Testing and Materials Seminar for Phase I Environmental Assessments • OSHA Health and Safety training and certification • • ASTM RBCA Training Affiliations • American Institute of Mining Engineers • Colorado Groundwater Association Colorado Petroleum Storage Tank Committee Registered Professional Environmental Scientist • Hazardous Materials Control Research Institute • Missouri Professional Geologist • National Water Well Association • Oklahoma Corporation Commission, Petroleum Storage Tank Division, Certification of UST Consultant, ID#496 • Utah Certified Consultant ' • Wyoming Professional Geologist Representative Experience " t D. Conducted research related to elemental leachability of coal combustion by- products and applicable testing methods. Received Department of Energy grant (ECBC) for research related to elemental leachability of coal combustion by- products in saturated conditions. > Provided Expert Testimony services regarding the elemental leachability of slag deposits near Leadville, Colorado. Page 1 JOBY.L. ADAMS, P.G. • CG Representative Experience (Continued) > Project Manager for a multi-million dollar environmental due diligence'for the ' • purchase of eight natural gas plants and 18 associated compressor stations throughout Oklahoma. > Supervised personnel and subcontractors for activities consisting of excavating and logging over 30 trenches and drilling 836 soil borings of which 239 were completed as groundwater monitoring -wells. Aquifer tests and periodic . groundwater monitoring.were performed as well. > Generated corrective action plans and cost estimates for.two gas plants with corrective action costs exceeding 25 million dollars. ➢ Project geologist - on-site investigations for subsurface , contamination by ' hydrocarbons _ > Coordinated drilling and sampling to determine extent of subsurface 'herbicide contamination > Logging geologist ➢ Tanker rollover emergency response • ➢ Remedial system design and evaluation > Expert witness testimony > Precision tank and line testing • ➢ Generated process safety management plans for companies using ammonia > Experienced with gas chromatography(using photoionization,•flame ionization and thermal conductivity detectors) > Designed and performed soil vapor surveys in regard to litigation preparation > Designed, permitted, installed and monitored remedial systems to remove • subsurface hydrocarbons in the states of Arizona, Colorado, Nebraska, New Mexico, Utah, Washington and Wyoming Publications/Papers • "A Feasibility Study for the Beneficial Use of Coal Ash as Fill Material in Saturated Conditions" - Under peer review for publication. • • "Soil Vapor Surveys with Soil Venting as an Aquifer Restoration Technique -A Case History;Delta Environmental Technical Review, March 1990, Vol. 2, No. 1, ` - pages 6-9 (with J.M. Kerr and-B.S. Steadman) • "Subsurface Contamination by the Herbicide Atrazine" Colorado State University • Unpublished Masters Thesis, 1994. • • Page 2, �c JOBY L. ADAMS, P.G. Professional Speaking Engagements • ➢ "Case History of the Varra Coal Ash Project"—Invited Speaker to the Seventeenth ' Annual International Pittsburgh Coal Conference, University of Pittsburgh, September 2000. > "Investigation and Remediation Techniques and Theories in regard to Subsurface . Contamination by Petroleum Hydrocarbons" - Colorado School of Mines UST Program (ongoing) > "base Histories of Investigation and Remediation Projects in Regard to Petroleum Hydrocarbon Contamination Assessment and Abatement" -. Colorado State University(Advanced Topics in Hydrogeology Guest Lecture Series; 1992) ➢ "Case Histories of Investigation and Remediation Projects and Theories and • Applications of Field Tracer Studies" - Colorado State University, Department of Civil Engineering, Groundwater Program (ongoing) f , • • • Page 3 ( CHESTER HITCHENS is CGaS • Chester Hitchens is a hydrogeologist with CGRS, Inc. with twelve years of professional experience at providing services specializing in design and implementation of site investigations involving petroleum and petrochemical products. Mr. Hitchen's background includes: . . Specialization i • • Contaminant recovery system design, including soil vapor extraction, air sparging and hydraulic containment/recovery • Management of petroleum cleanups • Air rotary, mud rotary,reverse rotary and auger drilling Groundwater sampling techniques for both organic and inorganic contaminants, organic and biomonitoring analyses - _ • Communication with state and other regulatory agencies _ ' • Prepurchase environmental investigations - • RBCA and expert witness Education , • M.S. (in progress) Geology—Colorado State University - • B.A. Geology—University of Northern Colorado • ASTM.RBCATraining Affiliations • • Wyoming Professional Geologist#817 New Mexico Environment department Certified Scientist#087 • Colorado Petroleum Storage Tank Fund Registered Professional Environmental Scientist#5148 Certified Washington State Site Association • Association of Ground Water Scientists and Engineers . • South Dakota Certified Petroleum Release Remediator#R-141 • Instructor Hydrogeology—University of Northern Colorado - Representative Experience • Managed over 75 investigation and remediation projects at service stations, bulk plants, industrial facilities and automobile dealerships. ;?• ' Negotiated closure and clean up stipulations with various regulatory agencies, both with and without performing remedial activities. • Served as an expert witness regarding various technical aspects of an alleged gasoline loss in a residential subdivision, :including date of release, volume of release and hydraulic characteristics of the aquifer. . • Served as technical advisor for a responsible party(RP) associated with a gasoline i release to a surface water body. The RP was issued a Notice of Violation from the United States Environmental Protection Agency. Mr. Hitchens provide technical j assistance to the RP's attorney and negotiated with the state of Idaho attorney ' general to prepare a Content Decree for the proposed clean up activities at the i facility. i r I i Page 1 , % `Y CHESTER HITCHENS • CG Representative Experience (Continued) • Served as a Project Hydroeologist on site investigations involving soil and groundwater contamination in Colorado, Idaho, Nebraska, New Mexico, Washington and Wyoming. Projects involve initial site investigation, evaluation of• . hydraulic characteristics of the aquifer, contaminant transport and preparation and implementation of remedial action plans for soil and groundwater clean up. • Conducted water rights adjudication for municipalities. Projects involved reviewing of court records, establishing baseline data for groundwater usage, and development of a data for the municipalities for the management of their ground water usage. Evaluated potential for groundwater recharge and hydrogeology of an alluvial basin in southwestern Arizona. Project involved defining the saturated and unsaturated hydraulic characteristics of the basin, conducting long-term aquifer tests on large diameter irrigation wells, developing a groundwater flow model to predict the impacts of future groundwater usage an examining geochemical data for the groundwater and surface water proposal to be used for recharge.. • Conducted groundwater contamination investigation associated with a dynamite plant. Project involved review of the facility records to determine past operations and disposal practices,examination of fate and transport of contaminants leached • from unlined disposal ponds and evaluation of steam and groundwater interaction • relating to contaminant transport. • • Page 2 • RANDY S. PRICE, C.P.G. cG Randy Price is a co-owner and our Environmental Services Field Manager. He has • over 9 years of environmental consulting experience and specializes in site investigations utilizing various drilling and sampling methodologies. Mr. Price's +� background is as follows: Specialization • Project management of a variety of projects including Phase I and II ESAs, fuel tank decommissioning at both singular and multiple sites. • Site investigations utilizing groundwater, soil and soil vapor sampling for organic and inorganic analyses • • Groundwater monitoring well installation and design • Phase I and II environmental site assessments • UST removal and closure • Designing and installation of remediation systems (i.e., groundwater recovery, SVE and AS remedial systems) • UST regulatory interpretation,consultation and representation Education • • B.S. in Geology- Fort Lewis College • • Graduate level courses in Hydrogeology-Colorado State University • Professional Seminars • • "Groundwater Investigations Using Portable Gas Chromatography and Other Field Instrumentation" • "Soil Gas: The State of the Art and Beyond" • "Site Assessments and Remedial Action for Petroleum Contaminated Soils" s EPG Service School-"Operation& Maintenance of Remediation Equipment" • OSHA Health and Safety training and certification OSHA Hazardous Waste Supervisor training l a Cathodic protection training ( • ASTM RBCA Training • Affiliations • Utah Certified Consultant#CC0092 • American Institute of Professional Geologists, CPG-8890 • Association of Groundwater Scientists and Engineers, National Groundwater Association • Colorado Hazardous Waste Management Society • Colorado Petroleum Storage Tank Committee Registered Professional Environmental Scientist, #503 • Wyoming Professional Geologist, PG-537 Representative Experience • Wellsite geologist - extensive experience with geophysical well logs, sample descriptions, coring and drilling procedures • Supervised and managed the removal of numerous USTs • Project geologist - on-site investigations for subsurface contamination by hydrocarbons and chlorinated solvents Page 1 • RANDY S. PRICE, C.P.G. CGTS Representative Experience (continued) • Design and implement sampling strategies for site characterization related to • surface and subsurface chemical releases • Aerial photograph interpretation, regulatory review, site assessments, owner/employee interviews and media sampling performed for Phase I and II real estate assessments for due dilignece projects throughout Texas, Lousiana, Nebraska,Wyoming, Utah, Maryland, Iowa and Colorado., • Gas chromatography using photoionization, flame ionization, thermal conductivity and electron capture detectors • Project manager of an 8,300 gallon release into a monitoring well. Obtained site closure in 2.5 years at a cost of less than$250,000. • Field team leader for subsurface investigation to evauate 15 miles of natural gas pipeline in southwestern Colorado. Sampling activities were.performed utilizing an ATV Geoprobe. Sample analysis was performed on site in a mobile laboratory. • • k.• - J • i Page 2 JAMES W. WARNER, Ph.D.,• P.E. • CG • Dr. Jim Warner is a senior engineering consultant for CGRS. He is also an associate • professor and groundwater/environmental hydrogeology program leader in the Department of Civil Engineering,at Colorado State University. Dr. Warner has.over twenty years of experience as a practicing groundwater engineer and is the author of over eighty technical publications and reports on groundwater. Dr.Wamer has worked internationally and is currently involved with the Egypt Water Use and Management Project. He is also on the peer review committee for the United States Department of Energy. Specialization • Groundwater flow and contaminant transport modeling • Aquifer remediation • Code development • feasibility studies and remedial investigations •' • Geostatistics • Education • Ph.D. in Civil Engineering-ColoradoState'University Major Field ofStudy-Groundwater Hydrology/Water Resources Systems Engineering Graduate level courses inCivil Engineering-:California State University at Long Beach Major Field of Study-Hydraulics and Surface Water Hydrology(total of seven courses) • 'M:S. in Systems Engineering-California State University at Fullerton 'Major Field of Study-Statistics and Optimization • M.B.A. in Business Administration-California State University at Fullerton Major Field of Study-Operation Research and Statistical Decision Theory .• B.S. in Civil Engineering- California State University at Fresno • OSHA Health and Safety training and certification Affiliations.and:Honors • • American Geophysical Union (AGU) • American Institute of Hydrogeology(AIH) • • American Society of Engineering Education (ASEE) • American Water Resources Association (AWRA) • Dean's Council Award for Outstanding Civil Engineering Faculty- 1993 • • Geological Society of America(GSA) • • International Association of Hydrogeologists (IAH) • • International Water Resources Association (IWRA) • National Water Well Association(NWWA) • • Professional Engineer(#16492)-State of Colorado • Professional Engineer-State of Wyoming • Professional Hydrogeologist-American Institute of Hydrogeologist Page 1 . • C- JAMES W. WARNER, Ph.D., P.E. CGS (7) Representative Experience • Associate Professor of Civil Engineering, Groundwater/Environmental , _ Hydrogeology program -Colorado State University(1981 to present): • • Conduct research and advise graduate students in groundwater • Develop and teach graduate courses in groundwater contaminant transport modeling, quantitative hydrogeology, solutions to groundwater problems, groundwater engineering, geostatistics and conjunctive use of groundwater and surface waters • Graduated 15 Ph.D.students and 32 M.S.students Civil Engineering Groundwater Program Leader-Colorado State University . • Groundwater hydrologist - US Geological Survey, Water Resources Division (1968-1981): ♦ Seven years in the Denver, Colorado office. ♦ Six years in the Laguna Nigel, California office (Southern California District Office • Project chief/member on complex hydrologic studies • Office consultant on technical matters related to groundwater hydrology - • Groundwater technical adviser - Egypt Groundwater Research Institute in Cairo, Egypt . • assist in developing research plans ' • train Egyptian engineers in groundwater • assist in formulating plans of action to control groundwater contamination ' •• assist in implementation of conjunctive use of groundwater with surface water • for irrigation use in Egypt • 'Groundwater modeling projects • Groundwater.author-over 80 technical publications and reports . • Associate editor-Journal of Engineering Geology • Research funding - has received over$1.8'million in external funding over the past six years • Research areas -computer code development, groundwater flow and contaminant transport modeling, stochastic modeling, fracture-flow modeling, monitoring criteria, ['" conjunctive use of groundwater and surface water, toxic wastes in groundwater ' systems, multi-phase multi-species contaminant transport, water resources 1 systems analysis, microbial growth in aquifer systems and aquifer remediation • Computer code development for the Colorado State University finite element groundwater modeling package, also used by consulting firms, the US Army Corps of Engineers, Waterways Experiment Station (i.e., Rocky Mountain Arsenal) - GWFLOW (2-dimensional flow model), GWTRAN (2-D/quasi 3-D contaminant transport model), GWFRAC (double porosity flow model), GWCH2O (vertically integrated density,dependent flow model), GWBIO (2-D model• for solving biologically active contaminant transport), GW3D-REACT (full 3-D multi-species contaminant transport model) Page 2 • i Mr. Glenn Mallory Varra Coal Ash Project December 29, 1998 Page 2 If you have any questions regarding this letter or require further information, please contact me at (800) 288-2657. Sincerely, CGRS, t C. Joby . Adams, P.G. r t cipal/Hydrogeologist Attachments cc: Mr. Chris Varra— Varra Companies Mr. Dave Goss — PSC Mr. Terry Staley-PSC Mr. Trevor Jiricek-Weld County Health Department Mr. Harry Pose- Colorado Division of Minerals and Geology Mr. Ben Patton -Weld County Planning • • • 1\CGRS_HQ_SERVERV oby1WA'WORD\LETPERS\statecoverltr.doc ( TABLES TABLE 2 Analytical Results-SELF' Varna Coal Ash Project Weld County,Colorado CGRS Project No.1-135-2755 Total Metals Analytical Results (mg/L) Sample pH Ex Al Sb As Ba Be B Cd Cr Co Cu Fe Pb Mn Ni Se Ag TI V Zn LI Hg Class F Silo Ash with 8.5 1 27.00 ND ND 3.80 0.003 5.70 ND 0.13 ND 0.03 _ 7.40 ND 0,07 ND ND ND ND 0.05 0.05 0.24 ND Gypsum (C Silo) 2. 9.70 ND ND 8.40 ND 0.69 ND 0.07 ND 0.01 2.20 ND 0.02 ND ` ND ND ND 0.02 0.02 0.12 ND 8 5 1 29.00 ND ND 1.30 0.002 1.70 ND ND ND 0.09 15.0 ND 0.14 0.02 ND ND ND 0.05 0.15 0.05 ND Bolton Ash 2 37.00 ND ND 1.60 0.003 1.20 ND ND ND 0.12 21.0 ND 0.21 0.01 ND ND ND 0.06 0.22 0.04 ND Cherokee Silo Ash 2/3 8.5 1 780.00 ND 0.40 5.20 0.082 120 0.05 0.52 0.11 0.80 210.0 0.62 1.40 0.18 0.64 ND ND 1.70 1.10 1.50 NA 2 NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR Cherokee 4 Fly Ash with 8.5 1 1.50 ND ND_ 0.98 ND 48 _ ND 0.19 ND ND 0.31 ND ND ND 0.23 ND ND ND ' ND 0.76 ND Sodium , 2 3.70 NA NA 2.10 NA 17 _ NA 0.63 NA NA 0.26 ND NA NA 0.10 NA NA NA NA 0.26 NA Recycled Concrete 8.5 1 1.90 ND ND 0.32 ND ND ND 0.07 ND 0.05 0.56 ND 0.02 0.02 ND ND ND ND 0.01 0.02 ND 2 47.0 NA NA 0.71 NA NA NA 0.05 NA 0.15 56 NA 1.70 0.04 NA NA NA NA 0,57 0.05 NA Recycled Asphalt 85 1 150.0 ND ND 1.90 0.009 0,09 ND 0.17 , 0.06 0.41 160 0.41 4.30 0.12 ND , ND ND 0.31 1.50 0.15 ND 2 2.50 NA NA 0.25 ND l ND NA 0.06 ND 0.02 0.27 Nb ND ND NA NA NA ND ND 0.02 NA Class F Silo Ash with 7 1 750.0 ND ND 1.90 0.073 21.0 0.01 0.50 0.11 0.59 200.0 0.10 2.0 0.22 ND ND ND 1.30 0.61 0.56 0.002 Gypsum(C Silo) • 2 12.0 NA NA 13.0 ND 0.30 ND 0.04 ND 0.01 3.30 ND 0.03 ND NA NA NA 0.02 0.01 0.14 ND Bottom Ash 7 1 045 ND ND 0.08 ND 1.00 ND ND ND ND 0.24 ND ND ND ND ND ND ND ND 0.03 ND 2 6.10 ND ND 0.27 ND 0.62 ND ND ND 0.02 ' 3.40 ND 0.04 ND ND ND ND 0.02 0.08 0.01 ND Cherokee Silo Ash 2/3 7 1 0.54 ND ND 0.79 ND 45 ND 0.11 ND ND 0.06 ND ND ND 0,19 ND ND 0.01 ND 0.73 ND 2 110.0 ND ND 6.70 0.008 22 ND 0.05 ND 0.09 32.0 _0.11 0.13 - 0.02 0.13 ND ND 0.17 0.13 0.33 0.001 Cherokee4 Fly Ash 7 1 0.21 ND ND 0.88 ND 45 ND 0.18 ND ND 0.06 ND ND ND 0.20 ND ND ND ND 0.76 ND with Sodium 2 84.0 NA NA 5.30 NA 24 NA 0.11 NA NA 22.0 NA NA NA 0.14 NA NA _ NA NA 0.31 NA Recycled Concrete 7 1 2.60 ND ND 0.15 ND ND ND 0.13 ND 0.06 0.64 ND 0.02 ND ND ND ND ND 0.01 0.02 ND 2 NR NR NR NR NR NR NR NR NR NR NR ' NR NR NR NR NR NR NR NR NR NR Stale Water Quality 5.0 0.006-0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 Standards A P P P P A P P A NS S/A P S P PP P A A A P , Notes: ND=Not Detected NA=Not Analyzed • EX=Extraction mg/L=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard NR-Samples Not Analyzed Page 1 of 4 • TABLE 2 Analytical Results-SELP Varra Coal Ash Project Weld County,Colorado CGRS Project No.1-135-27S5 • Total Metals Analytical Results (mg/L) Sample pH Ex Al Sb As Ba Be B Cd Cr Co Cu Fe Pb Mn NI Se Ag Ti V Zn LI Hg Recycled Asphalt 7 1 1.2 ND ND 0.089 ND ND ND ND ND ND 0.88 ND 0.026 ND ND ND ND 0.01 0.011 0.009 ND 2 26 NA NA 0.39 ND 0.18 NA NA ND NA 28 NA 0.076 NA NA NA NA 0.062 0.36 0.03 NA ClassFSiloAshwith 5 1 0.10 ND ND 0.98 ND • 6.10 ND 0.10 ND ND ND ND. ND ND ND ND ND ND ND 0.19 ND Gypsum (C Silo) 2 0.13 NA NA . 0.94 NA ND NA 0.06 NA NA NA NA_ NA NA NA NA NA NA NA 0.13 NA 1 6.40 ND ND 0.36 ND 1.20 ND ND ND 0.03 4.20 ND 0.05 ND ND ND ND 0.02 - 0.06 0.03 ND Bottom Ash 5 2 0.37 NA NA 0.06 NA 0.56 NA NA NA ND 0.20 ND ND NA NA NA NA ND ND 0.01 ND Cherokee Silo Ash 2/3 5 1 44.0. ND ND 2.90 0.0036 51.00. ND 0.13 ND 0.04 12.00 ND 0.05 ND 0.27 ND ND .0.06 0.06 0.77 0.0001 :1/4._—•; 2 5.10 NA NA 1.70 NA 15.00 NA ND NA ND l ND NA. ND NA ND NA NA 0.03 ND 0.22 ND Cherokee 4 Fly Ash With 5 1 0.61 ND ND •0.77 ND 51.00 ND 0.21 ND ND 0.11 ND ND ND 0.21 ND ND ND ND 0.77 ND Sodium 2 4.10 NA NA 1.10 NA 22.00 NA 0.05 NA NA . 0.28 NA NA NA 0.13 NA NA NA . NA 0.24 NA Recycled Concrete ,5 1 1.30 ND ND 0.45 ND 0.08 ND 0.06 ND 0.04. 0.56 ND. 0.01 ' ND ND ND ND ND ND 0.02 . ND 2 2.30 NA NA 0.23 NA ND _ •NA 0.08 NA 0.02 0.09 NA ND NA NA NA NA NA NA 0.02 NA Recycled Asphalt 5 1 120.0 ND ND 1.60 0.01 0.09 ND 0.13 0.05 0.33 140.0 0.33. 3.90 0.10 ' ND ND ND 0.26 1.30 0.12 ND 2 87.0 NA_ NA 1.00 0.01 0.08 NA 0.07 0.03 0.22 90.0 0.19 2.30 0.62 NA NA NA 0.17 0.86 0.08 NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0,200 0.050 0.050 0.002. 0.100 2.0 2.50 0.002 Standards A P P P P A P P A A/S S/A P S P PP P A A A P Notes: ND=Not Detected • NA=Not Analyzed EX=Extraction mglL=milligrams per liter — ti A-Agricultural Standard ' P-Primary Drinking Water Standard S-Secondary Drinking Water Standard NR-Samples Not Analyzed • Page 2 of 4 • L TABLE 2 Analytical Results -.SELF • Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 Sample pH ma Other Analytical Results(mg/L) ,Total Cyanide Free Cyanide Chloride Fluoride Sulfate Nitrate• Nitrite Class F Silo Ash with Gypsum (C Silo) 8.5 1 ND NA 130 8.4 23 7.9 4.6 2 ND NA 20 5.8 65 3.3 1 Bottom Ash 8.5 1 ND NA. 29 0.95- , 170 . 1.1 0.031 2 ND NA 6.5 0.35 45 0.31 _ 0.067 • Cherokee Silo Ash 2/3 6.5 1 NA 0.021 5.1 3.1 ND 0.35 0.013 ,r 2 NA 0.016 . 5.7 1.3 69 . ND 0.0058 Cherokee 4 Fly Ash with Sodium 8.5 1 NA 0.021 4.9 5.8 1100 0.14 ND 2 _ NA 0.012 1.2 3.1 59 0.15 0.0082 1 NA 0.047 26 5.3 10 1.4 0.096 Recycled Concrete 8.5 2 NA 0.027 1.5. _ 1.2 8.3 0.4 .0.034 Recycled Asphalt 8.5 1 NA 0.012 10 0.98 44 ND 0.0078 2 NA ND 1.6 1.2 8.2 . 0.2 0.0055 Trip Blank 1 8.5 . NA NA 31 1.5 2.6 NA NA Class F Silo Ash with Gypsum (C Silo) 7 1 NA ND 120 11 840 7.4 1.3 2 NA ND 31 7A 19 2.1 1 Bottom Ash 1 NA ND 23 0.89 140 0.87 0.048 2 NA . ND 5.1 0.46 33 0.16 ND Cherokee Silo Ash 2/3 7 - 1 NA ND 4.1 4.7 430 0.23 0.014 2 NA ND 1.8 _• 2.3 60 0.17 0.32 Cherokee 4 Fly Ash with Sodium 7 - 1 NA 0.011 3.4 5.1 430 0.2 0.017 r 2 NA ND 1.8 3.1 • • 49 0.12 0.036 Recycled Concrete 7 - 1 NA 0.11 26 4.1 31 0.92 ND 2 State Water Quality Standards 0.2 250 2.0 250 10 1 P S A P P P • • • • Page 3 of 4. TABLE 2 Analytical Results - SELP Vain Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 Sample pH Ext Other Analytical Results (mg/L) Total Cyanide , Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite Recycled Asphalt 7 - 1 NA ND 8.1 2.1 ND ND 44 2 NA 0.011 1.9 0.52 11 — ND ND Trip Blank 2 7 NA NA ND 1.6 ND 0.14 ND Class F Silo Ash with Gypsum (C Silo) 5 1 NA ND 120 14 760 7.9 8.40 2 NA • ND _ 29 11 16 2 3.60 r Bottom Ash 5 1 NA ND _ 23 2.8 120 0.78 0.031 _ .2 NA ND 7.9 1.6 37 0.24 ND Cherokee Silo Ash 2/3 5 1 NA 0.013 4.8 7.3 640 0.2 0.012 2 NA ND 2.4 5.6 28 0.31 ND Cherokee 4 Fly Ash with Sodium 5 1 NA 0.016 4.5 7.4 550 0.75 0.019 2 NA ND 2.4 8.1 61 0.31 0.028 Recycled Concrete 5 1 NA 0.015 24 5.6 8.1 1.1 4.70 2 NA 0.056 - 15 6.7 20 0.63 0.047 Recycled Asphalt 5 1 NA ND 13 2.4 45 0.20 ND • 2 NA ND 5.3 1.4 14 0.33 - ND State Water Quality Standards _ 0.2 250 2.0 250 10 1 Note: P S A S P P NA-Not Analyzed • ND.=Not Detected A-Agricultural Standard / P-Primary Drinking Water Standard S-Secondary Drinking Water Standard Page 4 of 4 TABLE 3 TCLP Analytical Results • Varra Coal Ash Project Weld County Colorado CGRS NO.1-135-275 • Sample Ex AI Sb As Ba Be B Cd Cr Co Cu, Fe Pb Mn NI Se Ag TI V Zn LI Hg • Class F Silo Ash with Gypsum (C Silo) 0.32 ND ND 3.10 ND 2.20 ND 0.031 ND ND ND ND ND ND ND ND NA ND ND 0.05 NA Bottom Ash 0.96 ND ND 0.62 ND 0.96 ND ND ND 0.0083 0.063 ND 0.12 0.02 ND , ND NA ND 0.10 ND NA Cherokee Silo Ash 2/3 ND ND _0.16 0.35 ND 24 ND ND ND ND ND ND 0.11 ND 0.41. ND NA 0.18 ND 0.21 NA Cherokee 4 Fly Ash with Sodium ND ND 0.23 0.37 ND 25 0.0057 ND ND ND . ND ND , 0.08 0.011 0.390 ND NA 0.34 0.0082 0.19 NA • Recycled Concrete, ND ND ND 0.36 ND 0.17 ND 0.061 ND 0.012 ND ND ND ND ND ND NA 0.041 ND 0.019 NA Recycled Asphalt 0.37 ND ND 0.52 ND_ 0.24 ND ND 0.015 0.015 0.25 ND ND 0.02 ND ND NA ND 0.26 ND NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.3015.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 Standards A P P PP A P P A NS S/A P S P FP P A A A P Notes: - ND=Not Detected NA=Not Analyzed EX=Extraction mg/L=milligrams per liter A-Agricultural Standard +/ P-Primary Drinking Water Standard S-Secondary Drinking Water Standard • • • Page 1 of 2 TABLE 3 TCLP Analytical Results Varna Coal Ash Project Weld County, Colorado • CGRS NO. 1-135-2755 . Sample Other Analytical Results(mg/L) Total Cyanide Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite Class F Silo Ash with Gypsum (C Silo) ND NA ' 98 8.4 220 3.4 4.6 Bottom Ash ND . NA 32 0.013 140 0.81 ND Cherokee Silo Ash 2/3 ND NA 0.61 _ 5.8 240 ND ND l Cherokee 4 Fly Ash with Sodium ND NA ND 4.1 140 ND ND • Recycled Concrete ND NA 7.2 . ND 41 0.29 ND Recycled Asphalt ND NA 5.9 0.27 29 ND ND . State Water Quality Standards - 0.2 250 2.0 250 .10 1 P S A P P P Note: NA•Not Analyzed ND=Not Detected - A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard �. . • Page 2 of 2 • _.._: — -- • TABLE 4 SGLP Analytical Results Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 • • Sample Ex Al Sb As Ba Be B Cd Cr Co Cu Fe Pb Mn Ni Se Ag Ti V Zn LI Hg Ash with Gypsum (C Silo) 1 0.28 ND ND 0.71 ND ac ND 0.033 ND ND ND ND ND ND ND ND NA ND 0.010 0.094 NA Bottom Ash 1 0.073 ND ND 0.12 ND 0,80 ND ND ND ND ND ND 0.010 ND ND ND NA ND ND 0.057 NA/- Cherokee Silo Ash 2/3 1 ND ND ND 1.10 ND 16 ND 0.033 ND ND ND ND ND ND 0.31 ND NA 0.04 ND 0.26 NA Cherokee 4 Fly Ash with Sodium 1 ND ND ND 1.10 ND 16 ND 0.06 ND ND ND ND ND ND 0.340 ND NA 0.07 0.005 0.23 NA Recycled Concrete, 1 0.32 ND ND 0.11 ND 0.13 ND 0.068 ND 0.012 0.22 ND ND ND ND ND NA 0.01 0.011 0.054 NA Recycled Asphalt 1 0.12 ND ND 0.067 ND 0.58 ND ND ND ND 0.074 ND 0.071 ND ND ND NA ND ND 0.051 NA Gravel Quarry Water ND ND ND _0.010 ND 0.30 ND 0.06 ND ND 0.056 ND 0.028 ND ND ND ND ND ND 0.027 NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050, 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 Standards APPP P A P P A A/S S/A P , S _ P P _ P P A A A P Notes: ND=Not Detected NA=Not Analyzed / ' EX=Extracti • on mglL=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard • Page 1 of 2 TABLE 4 SGLP Analytical Results Varna Coal Ash Project • Weld County, Colorado CGRS No: 1-135-2755 Sample Other Analytical Results (mglL) Total Cyanide Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite Class F Silo Ash with Gypsum (C Silo) ND . NA . 150 4.5 2700 4.1 4.63 Bottom Ash ND NA • • 110 0.9 3000 1.9 ND Cherokee Silo Ash 2/3 ND NA 83 _ 5.3 3400 0.083 ND Cherokee 4 Fly Ash with Sodium ND NA 84 4.4 3300 0.86. ND Recycled Concrete ND NA 110 0.19 2500 1.3 0.12 Recycled Asphalt ND _ NA 97 0.95 • 2800 1 ND Gravel Quarry Water . ND , NA . 76 4.0 2900 1 ND State Water Quality Standards , 0.2 250 2.0 250 10 1 P S A P P P Note: NA-Not Analyzed _ ND=Not Detected A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard Page 2 of 2 • TABLE 5 Analytical Results-SGCLP Varra Coal Ash Project Weld County,Colorado CGRS Project No.1-135-2755 • • Total Metals Analytical Results (mg/L) Sample pH PV Al Sb_ As Ba Be B Cd Cr Co Cu Fe Pb Mn NI Se Ag TI V Zn LI Hg 1 ND NA NA 0.29 NA 29.0 NA 0.31 NA NA ND NA NA NA NA NA NA ND 0.023 1.20 NA Class F Silo Ash with 8.5 2 ND NA NA 1.80 NA 950 NA 0.20 NA NA ND NA ND NA NA NA NA ND 0.0073 0.31 NA Gypsum (C Silo) 4 ND NA NA 2.50 NA 2.0 NA 0.09 NA NA. ND NA ND NA NA NA NA ND ND 0.22 NA 1 0.24 NA NA 0.059 ND 2.10 NA NA NA 0.0087 ND ND ND NA NA NA NA ND NA NA NA Bottom Ash 8.5 4 0.23 NA NA 0.022 ND 0.52 NA NA NA ND ND ND ND NA NA NA NA ND NA NA Ny- 8 0.29 NA NA 0.033 NA 0.30 NA NA NA ND ND NA ND NA NA NA NA NA NA NA !≤ 1 0.98 NA NA. 0.53 ND 130 NA 0.076 ND NA 0.11 ND ND ND NA NA NA 0.026 NA NA N..`- Cherokee Silo Ash 2/3 8.5 2 0.94 NA NA 1.10 ND 40 NA ND ND NA 0.19 ND ND ND NA NA NA ND NA NA NA 4 5.80 NA NA •7.20 'ND 22 NA ND ND NA ND ND ND ND NA' NA NA ND NA . NA NA 1 6.60 NA NA 0/2 NA 140 NA 0.46 NA NA 0.82 NA NA NA 1.10 NA NA NA NA 2.80 NA Cherokee 4 Fly Ash with 8.5 2 0.91 NA NA 0.69 NA 47 NA 0.016 .NA NA 0.25 NA NA NA 0.19 NA NA NA NA 0.53 NA Sodium 4 5.90 NA NA 9,30 NA 19 NA ND , NA NA 0.17 NA NA NA ND NA NA NA NA 0.21 NA 1 ND NA NA 1.30 ND 25.00 NA 0.33 ND 0.048 ND 0.27 ND ND NA NA NA ND NA 0.79 NA Class F Silo Ash with 7 2 ND NA NA 1.50 ND 4.40 NA 0.22 ND 0.026 ND 0,09 ND ND NA NA NA ND NA 0.29 NA Gypsum(C Silo) 4 ND NA NA ` 6.50 ND 0.81 ' NA 0.017 ND ND ND ND ND ND NA NA NA ND NA 0.27 - NA _ 1 0.30 NA NA 0.04 ND 2.20 NA NA ' NA NA ND NA ND NA NA NA NA NA NA NA NA Bottom Ash 7 4 0.18 NA NA 0.023 NO 0.85 .NA NA NA NA ND NA ND NA NA NA NA NA NA NA NA 8 0.39 NA NA 0.058 ND 0.39. NA NA NA NA 0.071 NA ND NA NA NA NA NA NA NA NA 1 1.40 NA NA 0.41 ND 190 NA 0.21 ND 0.0086 ND ND ND NA 1.30 NA NA 0.013 NA 4.30- NA Cherokee Silo Ash 2/3 7 2 0.46 NA NA 0.77 ND,: 54 NA 0.015 ND ND 0.078 ND ND NA 0.22 NA NA ND NA 0.47 NA 4 5.40 NA NA 5.30 ND 21 NA ND ND ND 0.17 ND ND NA ND NA NA ND NA 0.16 NA _ Cherokee4 Fly Ash 1 1.00 NA NA 0.58 NA 210 NA 0.47 NA NA ND NA NA NA 1.40 NA NA NA NA 5.10• with Sodium 7 2 0.30 NA NA 0.63 NA 64 NA 0.018 NA NA 0.051 NA NA. NA 0.21 NA NA NA. NA 0.52 t! 4 5.60_ NA NA 6.70 NA 22 NA ND NA NA ND NA NA NA ND NA NA NA NA 0.35 NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005, 0.100 0.050 .20/1.0 0.30/5.0 0.050 _0.050 0.200 0.050 0.050. 0.002 0.100 2.0 2.50 0.002 Standards A P . P P P A P P A NS S/A P S P P P P A A A P • • Page 1 of 4 • lAfLI, Analytical Results- SGCLP Varra Coal Ash Project Weld County,Colorado - CGRS Project No.1-135-2755 Sample pH pv Al Sb As BA Be B Cd - Cr _ . Co Cu Fe Pb Mn NI Se Ag Ti V Zn LI Hg .1 0.091 NA NA 1.5 NA 20 NA 0.34 _ NA NA NA _'NA NA _ NA NA NA _ NA. NA NA 1.10 NA Class F Silo Ash with 5 2 0.710_ NA NA 14 NA - 0.11 NA _ ND NA NA NA NA NA NA NA NA NA NA .NA 0.82 NA Gypsum (C Silo) 4 0.24 NA NA 29 NA ND NA_ ND NA NA NA NA NA NA _ NA NA NA NA NA 0.11 NA 1 0.087 NA NA 0.11 NA 3.10 NA ND NA ND ND NA ND NA ND NA NA ND 0.0068 0.12 NA _ _ ` Bottom Ash 5 4 0.130 NA NA 0.018 NA 0.47 NA ND NA _ NA ND NA NA NA ND NA NA ND ND ND- NA. 6 0.26 NA NA 0.02 - NA 0.23 NA NA NA ND ND NA ND _, NA NA_ NA NA ND ND ND NA - 1 0.42 NA NA .0.42 NA 170. NA 0.087 NA . NA 0.062 NA NA NA 1.10 NA NA 0.02 0,036 5.50 NA. Cherokee Silo Ash 2/3 5 2 0.25 NA NA 0.68 NA 41. NA. _0.014 NA NA 0.089 NA NA NA 0.19 NA NA ND 0.025 0.61 NA, 4 4.80 NA NA 5.10 NA 22 NA ND NA' NA ND NA NA NA 0.13 NA NA ND ND 0.19 ,p• 1 9.20 NA NA 7.30 NA 49 NA _ 0.081 NA NA 2.0 NA NA NA 0.31 NA NA NA NA 1.70 Cherokee 4 Fly Ash with 5 2 10.00 NA NA 25.00 NA 14 _ NA ND NA NA 1.30 NA NA _ NA ND NA NA NA NA 026 NA Sodium 4 12.00 NA _ NA 12.00 NA 10.00 NA ND NA NA 0.16 NA NA _ NA ND NA NA NA . NA 0.009 NA State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50 0.002 - Standards A P P P _ P A P _ P A A/S S/A P S P _ P PP A A A P Notes: ND=Not Detected NA=Not Analyzed ' pv=Extraction mg/L=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard _ S-Secondary Drinking Water Standard • Page 2 of 4 ' - -- - __ • TABLE 5 Analytical Results - SGCLP Varra Coal Ash Project Weld County, Colorado CGRS No.1-135-2755 • • Sample pH py Other Analytical Results(mg/L) Total Cyanide Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite 1 ND , NA 290 7,7 1400 17.0 22.0 Class F Silo Ash with Gypsum (C Silo) 8.5 2 ND NA 59 6.8 1100 4.0 5.1 4 ND NA 30 7.2 860 2.7 3.2 1 ND NA 74 1.5 350 1.4 0.379 • ` Bottom Ash 8.5 4 ND NA 8.2 0.57 46 0.22 ND 8 0.015 NA 2.2 0.98 16 ND ND 1 ND NA 12 11 1700 0.034 0.022 _ Cherokee Silo Ash 2/3 8.5 .2 ND NA 9.5 7 930 ND 0.006 4 ND NA 3.5 3.9 7 ND ND 1 ND NA 12 19 3080 1.2 0.093 Cherokee 4 Fly Ash with Sodium 8.5 2 ND NA 6.64 10.2 1100 , ND 0.013 4 ND NA 1.69 3.72 5.9 0.18 ND 1 ND NA 557 17 1700 30 47 _ Class F Silo Ash with Gypsum (C Silo) 7 2 ND NA . 52 14 1400 4.3 5.6 4 ND NA 29 9.3 300 3.9 4 1 . ND . NA 86.1 .2.25 . 449 0.703 1.25 Bottom Ash 7 4 ND NA 4.96 1.5 36.4 NO ND 8 ND NA 1.9 4.6 10 ND ND 1 ND NA 6.9. 11.1 1600 0.44 0.019 Cherokee Silo Ash 2/3 7 2 . ND NA ND 12.4 • • 777 ND 0.007 "-_ . 4 ND NA ND 5.04 8.2 0.166 ND 1 0.02, - NA 5.7 11 1300 0.3 0.03 Cherokee 4 Fly Ash with Sodium 7 2 ND . . NA ND 8.9 870 _ ND _ 0.0086 4 ND NA . ND 7.1 10 0.17 ND' State Water Quality Standards 0.2 250 2.0 250 10 1 P S A P P P c Page 3 of 4 - - - -- - - TABLE 5 Analytical Results- SGCLP Varra Coal Ash Project • Weld County, Colorado • • CGRS No. 1-135-2755 • • Sample pH PV Other Analytical Results(mg/L) Total Cyanide I Free Cyanide I Chloride I Fluoride. I Sulfate I Nitrate I Nitrite Sample pH Pv . Other Analytical Results (mg/L) - Total Cyanide ' Free Cyanide Chloride Fluoride Sulfate Nitrate Nitrite 1 0.014 NA 130O 7 2100 74 120.00 Class F Silo Ash with Gypsum (C Silo) 5 2 ND NA 110 4.2 13 8.1 13.00. 4 ND . _ • NA 3.5 4 5.2 1.7 0.62 - -- 1 ND NA 170 2.5 . 890 0.17 0.0064 Bottom Ash 5 ';4 . ND NA 1.6 . 0.57 13, ND ND ' 8 ND NA 0.94 0.42 6.2 ND ND 1 - ND . NA . 2.2 7.9 • 1500 ND , 0.013 Cherokee Silo Ash 2/3 • 5 2 NA NA 1.2 5.2 760 ND. .0.0067 ' 4 ND NA 1.5 3.7 _ 7.9 0.18 ND 1 ND NA 6 . 11 . 3100 0.4 0.09 Cherokee 4 Fly Ash with Sodium 5 2 ND NA 0.6 2.3 3.5. ND . 0.03 4 ND NA 1 1.7 0.64 ND ND State Water Quality Standards . . . . 0.2 . 250 . 2.0 250 . 10 1 . Note: . . P _ S A S P .- P NA-Not Analyzed ND=Not Detected pv=Pore Volume • pr A-Agricultural Standard • • • . P-Primary Drinking Water Standard S-Secondary Drinking Water Standard Page 4 of 4 . / TABLE SELL' Analytical Results in Excess of Water Quality Standards Fly Ash Disposal Project • Weld County,Colorado CGRS Project No.1-135 2755 ELEMENTS Ex Total flocs F Silo Ash with 1 6 12 1 19 Gypsum (C Silo) 2 3 3 0 6 Bottom Ash 1 4 1 3 8 2 4 2 0 6 1 14 4 6 24 Cherokee Silo Ash 2/3 2 NR 8 2 10 Cherokee 4 Fly Ash 1 4 3 3 10 with Sodium 2 4 5 2 11 Recycled Concrete 1 1 2 1 - "4 2 3 NR 0 3 1 9 1 8 18 - Recycled Asphalt 2 0 3 7 10 - pH 8.5 7 5 OTHER ANALYTICAL Class F Silo Ash with 1 2 2 3 7 Gypsum (C Silo) 2 1 1 2 .4 1 0 0 1 1 Bottom Ash 2 0 0 0 0 1 1 2 2 5 Cherokee Silo Ash 2/3 2 0 1. 1 2 Cherokee 4 Fly Ash 1 2 2 2 6 with Sodium 2, 1 1 1 3 1 1 1 2 4 Recycled Concrete - 2 0 0 1 1 • . 1 0 2 0 2 • Recycled Asphalt 2 0 0 0 0 pH 8.5 7 5 • NR-Samples not ran by laboratory varracompare i `` APPENDICIES - • APPENDIX - A Selected Data—Groundwater Quality and Hydrogeology of the Laramie-Fox Hills Aquifer in the Milton Reservoir Area,Weld County,Colorado • • • • F i • lb Fort Collins Larimer Greeley County Study Area Boulder . ' County Weld ° Longmont County I. F ' Boulder Adams County Jefferson ! County Golden Denver r%E.S Arapahoe County Immoral 0 feet 52300 105600 SCALE: 1:633,600 Figure 1 - Location of the study area. 2 2 • i '•-iI 'ti y9J°1°�. V E 'y. al'' = `-.` ' 1� `mil �' J _ = �:::- . AEA. 1y, +' ' ' ir—r . .1 it, v lc% ti......,F_ L...t lU .gam. .�. • ,�.. •I, ;I .r 1 .-- ‘.: l �: 4.b•r•-- -- •I`may�6v . •�Y,•'�4Y�6'a . - i.- . x x I N " -/'.'-.Y__�F. is p r '• T�' I /. fle1 •�Y�' • % 4 Fes_ �q ,' \ •/" !`f„M, , • !'_�'• "Tin, i - ', / i T j::r F v / au � II / / __ / � ' iq! - - I Si. - / 5 .'- I' /: - .. yt1- ..-- I •-am—�R. r• LT•r I F , • _ i'�y-t � j, r� .-G- i e' 1 -"•••••-,....... ♦ rLC. -I `� f5. b _ ��y.-amp , ,t • • Ll t -o lit _ , • S fit— V-. -tlr-- ••l if ` i . _ T :;^-, - N: I -TEA '-. -.. - •• • ` � c '..4 -= i.9 I / • —ate-r- ' 1/ - '- c�\*'ee.'v - I- ! / I is . --. ! .•.=t7--,.2f-45----17-1- I 1":2-: ,I x z w vyl[ I0 10 P .0[RCMETIFS EXPLANATION OUTT]tOP 6 PRFr'J.aIPMM ROOC. -APPROXIMATE CJFER Liver OF THE LARAME FOX KILLS ACtlF ,. IMO I iS*cl lY THE UMs@• DATA POINTS F %Mdl5 MViER ! • lime,weaned n1961 FAULT-0.M dr.mind • —l%O PORNTIOM.ETNC CONTOUR-9ow • Hr!u.ud Iv.. ...ann.n .Ind•d.Mgr.I.N n+d. Im.P.dN Pen.,.,M N created n e,.lr.MrFc.H16 wain • 0.—dr.spmrrd bud Ctnnnt..d100 Ism D.n.%bu Mal Figure 9 - Potentiometric Map of the R1-f Aquifer in the - Denver Basin (Robson and Banta, 1987) . • 34 1 . • GROUNDWATER QUALITY OF THE AREA The compiled groundwater quality data were compared with Federal and State Applicable or Relevant and • Appropriate Requirements (ARAR' s) . 'The ARAR's were obtained from the Colorado Department of Health (1985) water quality t ' numeric recommendations and standards. Table IX summarizes the ARAR's and water quality parameters which exceed . applicable standards. Sulfate, . iron, fluoride, pH, ROE and, manganese parameters were found to exceed applicable standards. Figure 19 shows the distribution of samples exceeding ARAR concentrations. With the exception of pH and ROE, the ii highest percentage of samples that exceed ARAR' s are from ! Data Groups "B" and "C" . Over 60% of Data Group "C" samples !!!! and, 45 -f Data Group "B" samples exceed the ARAR' s for • sulfate concentrations. Additionally, the ARAR concentration for dissolved iron is exceeded by 36% of the samples from Data Group "B". Thirteen percent of the Group "C" samples exceed the ARAR for fluoride. Over 82% of the samples from Data Group "A" exceed the applicable water quality standard for pH. All of the samples (groups "A" , "B" and "C") exceed the ARAR value (500mg/l) for ROE (TDS) . P • tl 67 1. L ..... . , ......_ \.:, L • I ' ITable -IX - ARARts and .Summary of Exceedances PARAMETER APPLICABLE STANDARDS PERCENTAGE OF SAMPLING STATIONS i mg/L EXCEEDING STANDARu5 • GROUP A GROUP -8 GROUP C i Na NS • SO4 250 - [DM Gil DVSTD 0% 45% • 63% ca Ns Mg NS Fe 0.3 - CON GV DVSTD 8% 36% 13X Fl 2.0 - CDH GW DVSTD OX OX 13% ` Cl 250 - CDH GV OVSTD OX DX 0% pH 6.5-8.5 - CDH Gil DVSTD "822 36% 25% C03 NS ROE (IDS) 500 - CDH GU DVSTD 100% 100X 100% EC NS N03-N 10.0 - CDH Gil DVSTD OX OX OX K NS I `Ba 1.0 - CON GU DVSTD 0% OX OX Co NS �t Pb 0.05 - cON ow DVSTD 0% 0% OX Mn 0.05 - CDH GV DVSTD 0% 18% 38X Mo 0.1 - COM AG OX OX 0% Sr NS IV 0.1 - CDH AG 0% DX OX • Be 0.1 - CDH AG OX OX OX Cu 1.0 - CDH GV DVSTD OX OX OX I Li 2.5 - CDH AG OX 0% OX Si 4S ( Zn 2.0 - cta'AG OX OX L 4 Cd 0.01 - CDH Gil DVSTD OX 0% 0% F- Ag 0.05 - OH GV DVSTD OX 0% 0% Cr 0.05 - CDR GW DVSTD DX 0% OX .. Ni 0.2 - CDH AG OX OX OX I` CDH - Colorado Department of Health II SW - Surface Water GV - Groundwater DVSTD - Drinking Water Standard NS - No Standard NA - Not Available {I I 68 . DISTRIBUTION OF SAMPLES EXCEEDING WATER QUALITY STANDARDS • . i 70-0 1 o 2_, io, wBO-e' CC Q. .b-e $04 =Fe F pH ROE Mn PARAMETERS Da GROUP.A ` GROUP B SS GROUP C WATER QUALITY STANDARDS: SO4 250 Ft 03 F 2.0 pH 63-Si ROE 500 • I Mn 0.05 •UNITS IN mg/L except for pH Figure 19 - Graph represents the distribution of parameters exceeding ARAB concentrations. 69 Eighteen percent of Data Group "B" samples and 38% of Data Group "C" samples exceed the ARAR concentration (0. 05 mg/1) for manganese. Despite having iron, pH, and ROE parameters I . exceeding ARAR concentrations (Table IX) , the Data Group "A" samples, representing the groundwater from the K1-f Aquifer, is of better quality for human consumption and domestic ( purposes than the groundwater of Data Groups "B" and "C" . However, the NA-CO3+HC03 groundwater in the Kl-f Aquifer may not be suitable as drinking water for persons on low sodium ( diets. The mean ROE value of 592 mg/L exceeds the ARAR concentration of 500 mg/L due to the high mean concentrations of sodium (242 mg/L) and carbonate + ( bicarbonate (461' mg/L) ions. The groundwater collected from wells in Data Group "B" was of a lesser quality than the groundwater from Data Group "L" . The mean sulfate, ROE and dissolved irora , �> concentrations within Data Group "B" exceed ARAR' s. The high sulfate concentrations in the drinking water obtained from wells in Group "B" may act as a laxative if consumed and the high iron concentrations may cause staining of plumbing and bathroom fixtures .(Driscoll, 1986) . In addition, the high soodium-sulfate concentration may not have. an aestically pleasent taste or smell. The groundwater quality from wells in Data Group "B" is not suitable for 70 U • human consumption and most domestic purposes. - i The water quality of the groundwater sampled from' wells comprising Data Group "C" is unfit for human consumption. The mean sulfate concentration of 647 mg/L and the mean ROE value of 1390 mg/L exceeds. the ARAR concentrations summarized in Table IX, with the. mean ROE • value exceeding 1, 000 mg/L the groundwater is classified as brackish (Freeze and Cherry, 1979) . Water which has a • dissolved solids concentration greater than 1000 mg/L is a high salinity hazard and is unsuitable for most types of irrigation due to the potential salt buildup in the soil (Robson, 1989) . I • • • 71 JUN-16-1998 10:28 ) `" REPORT DATE 04/29/98 COLORADO WELLS, APPLICATIONS. AND PERMITS PAGE 1 COLORADO DIVISION OP WATER RESOURCES PI .HIT D CO OWNER INFORMATION I ACTIVITY STATUS 1ST USED ANNUAL ACRES GEOL WALL WELL WATER SEC,OCAT'N TOWN P I CD DATE CD DATE WD MD DO USE DATE APROP ERR AQFR YIELD DEPTH LEVEL COORDINATES AIRS SC SHIP RANGE M 1 62 GIECRIST CONS? 6999 YORK St DENVER, CO 80229 GRAVEL PET 1 AP 02/20/90 AU 03/20/90 50 G CW 21 3 N 67 W S 1 62 DAKOLIOS ERNEST R. GOI.0 nN. CO 80401 • AP 05/03/85 AU 05/07/A5 2 A CW SW 31 3 N 67 W S 1B9F 1 62 VARRA COMPANIES 2130 S 96TH ST BROOMFIELD, CO 80020 EP 07/02/07 EP 02/05/98 S 5 GW I 0300N.0200E NENF. 31 3 N 67 H S 1 62 vARRA COMPANIES 2130 S 4617 BROOMFIELD, CO 80020 GRAVEL PIT tit . /n�. 1. AP 07/16/90 AU 09/21/90 5 0 G OW '(t SWNE 33 3 N 67 W S 926AD 1 62 DAKOLIOS CNSTR CO DENVER, CO 80221 '- AD 6 9 - NENW 31 3 N 67 W S 1 62 VAkkA COMPANIES 2130 5 '96111 BROOMFISLD. CO 80020 GRAVEL PIT AP 07/16/90 AU 09/20/90 5 0 G CW - SWNW 11 3 N 67 W S 4 938 1 62 ST VRAIN SAN DI5T 600 KIMBARK ST STE B LONGMONT, Co 80502 edwingtec...../ NP 09/19/87 SA 12/72/80 5 3 12/15/87 0.33 KLF 2.50 150 12 22155,2905E NWSE 01 3 N 67 w 5 796M 1 62 $T. VRAIN SAN. COO KIMBARK ST STE B LONGMONT. CO 80502� e0-Kr NP 12/01/97 SA 5 0 07/08/88 GA 18 19335,2910E NWSE 31 3 N 67 W S 32796M 1 62 ST. VRAIN SAN. 600 KIMBARK ST STE B LONGMONT. CO 60502 °M r NP 12/01/87 SA 5 0 07/08/86 GA 18 1v:O5,2410E NWEE 31 3 N 67 W S 795M 1 62 ST VRAIN SANITATION DIST 600 KIMBARK ST STE-Ii (ONGMONT. CO 80502 5 0 12/15/87 18 1,9335,29250 NWSE 31 t N 67 N S 1 62 VARRA COMPANIES 2130 S 96TH BROOMFIBLD, CO 80020 4 f AP 12/23/96 5 O i(&M.C(/7(t GM NESW 31 3 N 67 w S 195 1 62 COULD L LONGMONT. CO 80501 NP 04/06/82 AR 04/27/63 5 R 514511 31 3 N 81 w s 1 4183 1 62 GOULD LEE 12148 WELD CNTY RD 13 LONGMONT, CO 60501 NP 01/26/89 AR 05/18/09' 5 89 CW 75.00 32 10 03905,0100W 511511 3) 3 N 67 W S 1 M.182 A 1 62 GOULD LEE 12198 WELD CNTY RD 13 LONGMONT, CO 80501 . NP 04/26/89 AR 06/16/89 5 89 GPI 02905,0100W swsw 21 3 N Al W S 568 1 62 GOULD LEE RT 4 LANGMONT. CO 90501 5 9 05/03/66 28.00 25 6 SWSW•31 3 N 67 W S .I r . _ . . • I}I TnTnl A (RR JUN-16-1998 10:27 ' r.YJ4 K__,,,) REPORT DATE 04/29/99 COLORADO WELLS, APPLICATIONS. AND PERMITS PAGE 1 COLORADO DIVISION OF RATER RESOURCES El HIT D CO OWNER INFORMATION • ACTIVITY STATUS 1ST USED ANNUAL ACRES GEUL WELL WELL WATER SEC LOCAT'N TOWN p CD DATE BCD DATE WD MU DO USE DATE APROP /RR AOFR YIELD DEPTH LEVEL. COORDINATES ()TES SC SHIP RANGE M 9705F 1 G2 RALPH NIX PRODUCE, iNC 1yi6u US Hwy 05 OILCREST. CO 60623 —I RC 12/02/92 5 t 02/28/96 ,000.00 .1G a RENE 20 '3 N S7 N S 2 374 1 62 RALPH NIX PRODUCE 16959 NCR 41 CILCREST, CO 00623 , NP 10/]n/96 AC 04/24/97 2 0 L -GW 15.00 70 2:, :0.51 NI,(111756: SItfE 20 A N al W S 2469F H 1 G2 KURTZ CATTLE CO t AGRICOLA REALTY 6 MGMT FT MORGAN. CO 60701 NP 11/10/94 2 1 CN 4;I 2572N/2065F. SENN 20 3 N' G7 W S 124E 1 62 KURT: HELENS 0,W MAX 5636 E 17111 AVE, DENVER 20. CO 80220 5 1 05/20/63 1000.00 48 5 NWSW 28 1N 67.N S 173 1 G2 RALPH NIX PRODUCE. INC 19490 U5 HWY 8$ CILCRESV, CO 00623 ' NC 12/02/92 5 a 05/10/09 15.00 24. 4 SWSW 20 3 N 67 H S 136175 1 62 LE.SH E AULT. CO 80521 NP 09/27/04 5 0 01/30/85 NE 29 3 N 67 W S :17 1 62 KURTZ ALBERT H F D 1'LAi7EVILLE. CO 80651 S 9 40.00 10 4 NF.NE 29 3 N G7 N S ' 1 62 LES11 0 MILT, CO 80610 TR 04/16/34 5 1 401111 1 62 CO DAIRY FARMS C/O LESH DRILLING AULT, CO 90610 NENW 29 3 44 67 N S MH 02/06/97 5 0 RN AH27N,7497w NENW 27 l N 61 N S 9 029VE 1. 62 AURORA DAIRY CORP 7388 HWY 66 LONGMONT, CO 00000 -11 AV 02/07/92 5 ]9 OW 0fi 27 N,2447W NENV 29 J N 69 W 34179 1 62 PSF ASSOCIATES LONOM0N7'., CO 60501 NP 10/12/82 RC 01/20/84 5 q NENW 29 3 H 67 N S 7 51F. R 1 62 COLORADO DAIRY FARES 7388 WWI 66 LONGMONT'. CO 80501 1r NP 02/06/92 SA 0'1/15/91 .5 9 n2/26/92 350.01, OW 290.00 25 7 0R27N,7497W NENW 29 T N 6'/ w S 25867F 1 62 PS? ASSOCIATES 93O8 STATE HWY 66 LONGMONT, CO'805D1 AB 02/19/92 5 9 09/09/82 205.00 l0 7 0727N.2197w NENW 29 3 N 67 N S 1 I. . C f: • • • • • • • • JUN-16-t d 1U d7 r.cJJ • REPORT DATE 04/29/98 COLORADO WELLS. APPLICATIONS, AND PERMITS wAOt: 1 COLORADO DIVISION OF WATER RESOURCES 14T D CO OWNER INFORMATION • ACTIVITY STATUS 1ST USED ANNUAL ACRES GEOL WELL WELL WATER SEC LOCAT4N TOWN P CD DATE CD DATE WU MD DB USE DATE APROP -IRR AQFR YIELD DEPTH LEVEL COORDINATES OTRS SC SHIP RANGE M 19874/07 1 '62 AT&T COMMUNICATIONS 7 CERTIFIED ENV CONSULT SALT LAKE CITY. UT 04115 - MH 10/19/92 S 0 M OW 0.50 10 6 NF. 30 3 N 67 W S 1462 1 62 HESS LANCE - CEC 2757 S 300 WEST MR SALT LAKE. UT 84115 NP 11/01/93 5 0 M UNC 0134N,2473E NWNE 30 3 N 07 W S 463 1 62 HESS LANCE - CEC 2757 S 300 WEST OR SALT LAKE. UT 84116 NP 11/01/91 5 0 M • UNC 0177N,2444E NWNE 30 3 .N 67 W S 175464 1 62 HESS LANCE - CEC 2757 S 300 WEST MA SALT LAKE. UT 84115 NP II/01/73 5 0 M UNC 0094N.2498E NWNE 30 3 N 67 W S ,465 1 62 HESS LANCE - CEC 2757 S 300 WEST MR SALT LAKE, UT 84115 NP 11/01/93 5 0 M UNC 0177N,2491E NWNEE 30 3 N 67 W $ • • ti • Coloraao Streamflow Page 1 of 1 K'K�.. COLORADO'S -u-/ L/ 'S • ., ., . .• r Streamflow Colorado Streamflow Information Here's the streamflow information you requested: ST. VRAIN CREEK NEAR PLATTEVILLE, AT THE f MOUTH 400 • • 7350 300 250 a 200 LL 150 a 100 v 50 • 20-Jun 21-Jun 22-Jun 23-Jun 24-Jun 25-Jun 26-Jun 27-Jun 28-Jun 29-Jun. 30-Jun Chart prepared on 6/30/98 10:07:28 AM - Days go from Midnight to Midnight Estimated Channel Capacity 1650 CFS WaterTalk (303) 831=7135 Division 1, Station 59 [Another Stream] Natural Resources I Parks I Wildlife I Waler I Geology I Oil & Gas I Minino, I Land I Overview http://www.dnr.state.co.us/scripts/gage/gage.idc 6/30/98 Colorado Current Streamflow Conditions- Wale... Page 1 of 13 • riil . t# P . S xYSfi''� ivait a st;ay�.r f' 1;x m�^ar,:', ah . q na $Gl8'I1f:1R7F1`��o"IYaI�g�[1gkY1?1'id 4E,: x��p�p tA�asel' xs.0 i„�wea.S ,.'a.�' ��'; Colorado Current Streamflow Conditions - Water Quality Updated TUESDAY JUN 30, 1998 13:08:11 Streamflow conditions are monitored by the U.S. Geological Survey with support from Federal, State, and local cooperators. PROVISIONAL DATA SUBJECT TO REVISION--Select a station number from the table to view graph(s) and other data for a station. T Wate Specific issolved pH Station Station Temp Rainfall Flow Stage Conductanc Oxygen Standard Number Name .°C Inches ft3/s ft µS/cm mg/L Units Date/Time • a SOUTH PLATTE RIVER BASIN Tarryal Creek below Park Gulch near 06/30 06697 100 Como, Co -- -- 20 3.85 -- -- -- 08:00 Spring Cr above mouth nr South Platte • 06/30 06701970 Co -- 0 .41 3.76 -- -- -- 12:50 06706800 Buffalo Creek at mouth at Buffalo 06/30 0 31 3.75 Creek 11:00 06709000 Plum Creek near Sedalia, Co. -- 0 29 1.85 -- -- -- 06/30 • 10:45 ( 06709530 Co 11:30 Creek at Titan Rd nr Louviers, -- -- 3.4 6.27 06/30 `-- 11:30 South Platte River below Union Ave, -- -- 87 10.91 06/30 06710247 at Englewood 09.30 06/30 0671 1565 South Platte River at Englewood, Co. 0 -- 112 1.73 389 1.6 7.8 10:30 06/30 06712000 Cherry Creek near Franktown, Co. -- 0 2.6 2.16 -- -- - 09:45 South Platte R at 64th Ave. Commerce 06/30 06 714215 City, Co. -- -- 146 2.65 -- -- -- 09:00 http://nwis-colo.cr.usgs.gov/rt-cgi/gen_thl_pg_ex 6/30/98 Colorado Current Streamflow conditions' Wate... Page 2 of 13 06714800 Leavenworth Creek @ mouth nr 0 48 4.33 0 06/30 Georgetown, Co - 12:30 06716500 Clear Creek near Lawson, Co. -- 0 488 4.52 -- -- -- 06/30 12:30 06719505 Clear Creek at Golden, Co. -- -- 676 6.51 -- __ + _ 06/30 10:00 06720255 Uvalda Intercept bl 56th Av at Rocky 06/30 0 35 -665.7 Mtn Ars, Co 12:15 Havana Intercept bl 56th Av, at Rocky 06/30 06720285 Mtn Ars, Co -- 0 1.3 10.63 -- -- -- 07:45 First Cr bel Buckley Rd, at Rocky Mtn 06/30 06720460 Arsenal, C -- 0 0 .81 -- -- -- 07:45 06720490 First Cr at Hwy 2, near Rocky Mtn -- -- 0 72 06/30 Arsenal, Co 07:00 06730200 Boulder Cr at North 75th St nr Boulder -- -- 300 5.86 -- -- -- 06/30 12:00 06741510 Big Thompson River at Loveland, Co: -- -- 159 2.62 -- -- __ 06/30 11:00 North Fork Cache La Poudre River 06/30 0671 1150 below Halligan Reservoir near V Dal 100 2.98 10:45 Cache La Poudre River at Fort Collins 06/30 06752260 Co 14.9 -- 409 3.51 48 -- 8.3 12:15 06752280 Cache La Poudre R ab Boxelder C, nr 06/30 273 5.16 Timnath, Co. 10:45 06754000 South Platte River near Kersey, Co. -- -- 509 3.65 -- -- 06/30 10:30 06/30 393109104464500 Cherry Creek near Parker, Co -- -- 1.9 2.66 -- -- -- 01:45 South Clear Creek abv Naylor Creek 7.6 06/30 393647 1 054253 1 7nr Georgetown 3.3 7.41 68 02:00 Sand Creek at mouth nr Commerce 06/30 394839104570300 City,co -- -- 310 5.74 -- - -- 04:30 . a.UPPER ARKANSAS RIVER BASIN http://nwis-colo.cr.usgs.gov/rt-cgi/gen_tbl_pg_ex 6/30/98 . v ` APPENDIX-B Methods and Procedures I • c CGRS,Inc. METHODS AND PROCEDURES Soil Borings Soil sampling will be conducted in accordance with ASTM:D 1586-87. Using this procedure, a 2- inch O.D. split-spoon sampler will be driven into the soil by a 140 pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sample an additional 12 inches,known as the penetration resistance(N value), will be recorded. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Soil Classification/Characterization As samples are obtained in the field, they will be visually inspected and classified in accordance with ASTM:D 1488-84. Representative portions of the samples will then be retained for further examination and for verification of the various strata, the N value, water level data, and pertinent information regarding the method of maintaining and advancing the boring will be provided. Charts illustrating the soil classification procedure, descriptive terminology and symbols used on the logs will be provided. Decontamination To avoid potential transport of contaminated materials to the project site, all drilling equipment and down-hole tools will be steam cleaned prior to mobilization. To prevent cross contamination between soil borings or monitoring wells all down-hole equipment will also be steam cleaned and rinsed with water between soil borings. " Monitoring Well Construction Monitoring wells will be installed utilizing the following general construction criteria:• borehole diameter: minimum 6.25 inches; • well diameter:2 inches; ' • estimated depth: 15 feet below ground surface; • casing material: schedule 40, flush thread PVC; • CGRS,Ina • well screen:2 inch I.D., 10 feet in length,Ii 0.01 slot PVC; • estimated screened interval:5 feet above and 5 feet below the groundwater table; • annular pack: 10-20 silica sand; • protective casing:minimum 12 inch I.D., steel flush or above grade, locking cap; and • annular seal:cement grout and bentonite pellets. •Groundwater Sampling • • All borings where groundwater is encountered will be sampled from the suspected cleanest to the most contaminated according to the protocols listed below. All pertinent information will be recorded on a sampling information form. II Field Protocol Step 1 -Measure water level. Step 2-A dedicated polyethylene bailer will be used to develop each boring. Three bore volumes will be evacuated from each boring prior to sampling. Step 3 -Collect water samples. Water samples will be collected using a polyethylene bailer:, A field blank will be collected during the sampling program to ensure quality control. l>.5 Step 4-Store samples in a cooler on ice for transport to the laboratory. Follow all documentation and chain-of-custody procedures. Step 5-Clean equipment. Water level measurement equipment will be cleaned with ethanol followed by a deionized water rinse. Upon completion of soil or groundwater,sampling, a chain of custody log will be initiated. A copy of the chain of custody will be returned to the project manager. CGRS, Chemical Analysis All analytical parameters are described in the Laboratory Quality assurance plan presented as Appendix C. • Groundwater Elevation Measurements The following outlines our standard groundwater quality sampling methodology. Before purging any of the soil test borings or monitoring wells, water level measurements must be taken. Measuring Point Establish the measuring point for the well. The measuring point is marked on the north side of the top of the temporary monitoring well riser. The top of the riser is normally a 2 inch casing inside a locked protective casing. The riser will be PVC pipe, galvanized pipe or.stainless steel pipe. The measuring point should be described on the groundwater sample collection record. Access After unlocking or opening a monitoring well, the first task will be to obtain a water level measurement. Water level measurements will be made using an electronic water level indicator. Depth to water and total depth of the well will be measured for calculation of purge volume. Measurement To obtain a water level measurement, lower a decontaminated electronic water level probe into the monitoring well. Care must be taken to assure that the electronic probe hangs freely in the monitoring well and is not adhering to the well casing. The electronic probe will be lowered into the well until the audible sound of the unit is detected and the light on the electronic sounder illuminates. At this time, the precise measurement should be determined by repeatedly raising and lowering the probe to obtain an exact,measurement. The water level measurement is then entered on the groundwater sampling collection record sheet or groundwater level data sheet to the nearest 0.01 feet. CGRS,Inc Decontamination ( The electronic probe shall be decontaminated immediately after 'use by wiping with isopropyl alcohol-soaked paper towels. Always proceed in order from the suspected cleanest well or soil test boring to the suspected most contaminated one. Purge Volume Computation All soil test borings and temporary monitoring wells will be purged prior to sample collection. Depending upon the rate of recovery, three to five volumes of groundwater present in a well or bore hole shall be withdrawn prior to sample collection. If a well or bore hole bails dry, the well or bore hole should be allowed to recharge and a sample taken as soon as there is sufficient volume for•the intended analysis. The volume of water present in each well or bore hole shall be computed using the two measurable variables, length of water column in soil boring or monitoring well and diameter. Purpinp and Sample Collection Procedures Bailine - • Obtain a laboratory decontaminated disposable bailer and a spool of nylon rope or equivalent bailer cord. Tie a bowline knot or equivalent through the bailer loop. Test the knot for adequacy by creating tension between the line and the bailer. Tie again if needed. New rope will be used for every sample or purge. New clean latex gloves will be used when touching the rope or bailer. • Spread a clean plastic sheet near the base of the well. The plastic sheet should be of sufficient } size to prevent bailer or bailer rope from contacting the ground surface. • Place the bailer inside the well to verify that an adequate annulus is present between the bailer and the well casing to allow free movement of the bailer. • Lower the bailer carefully into the well casing to remove the sample from the top of the water column,taking care not to agitate the water in the well. CGRS,Inc. •' Pour the bailed groundwater into a bucket. Once the bucket is full, transfer the water to a barrel and contain on-site. • Raise the bailer by grasping a section of cord, using each hand alternately. This bailer lift method will assure that the bailer cord will not come into contact with the ground or other potentially contaminated surfaces. sampling f • Instructions for obtaining samples for parameters are reviewed with the'laboratory coordinator to insure that proper preservation and filtering requirements are met. • Appropriate sample containers will be obtained from the contract laboratory. After samples are collected, they will be put on ice in coolers (4°C). Care will be taken to prevent breakage during transportation or shipment. • • Samples collected by bailing will be poured directly into sample containers from bailers. The sample should be poured slowly to minimize air entrapment into the sample bottle. During collection, bailers will not be allowed to contact the sample containers. • Upon completion of sampling a chain-of-custody log will be initiated. Chain-of-custody records will include the following information:project name and number, shipped by, shipped sampling point, location, field ID number, date, time, sample type, number of.containers, analysis required and sampler's signature. The samples and chain-of-custody will be delivered to the laboratory. Upon arrival at the laboratory the samples will be checked in by the appropriate laboratory personnel. Laboratory identification numbers will be noted on the chain-of-custody record. Upon completion of the laboratory analysis, the completed chain-of-custody record will be returned to the project manager. Field Cleaning Procedures For all equipment to be reused in the field,the following cleaning procedures must be followed: . • Disassemble the equipment to the extent practical. • Wash the equipment with distilled water and laboratory-grade detergent. CGRS,Inc. • Rinse with distilled water until all detergent is removed. • Rinse the equipment with isopropyl or methanol, making sure all surfaces, inside and out, are rinsed. • Triple rinse the equipment with distilled water. Laboratory Selection The project manager should consider the following factors when selecting a laboratory: • Capabilities(facilities,personnel, instrumentation), including: • Participation in interlaboratory studies (e.g.,EPA or other Federal or State agency sponsored analytical programs); • • Certifications(e.g., Federal or State); • References (e.g. other clients); and • Experience(UST, RCRA and other environmentally related projects). • Service; • • Turnaround time; and • Technical input(e.g., recommendations on analytical procedures). The project manager is encouraged to gather pertinent laboratory-selection information prior to extensively defining analytical requirements under the project. A request may be made to a laboratory to provide a qualifications package that should address the points listed above. Once the project manager has reviewed the various laboratory qualifications, further gpecific discussions with the laboratory or laboratories should take place.In addition, more than one laboratory should be considered. For large-scale investigations, selection of one laboratory as a primary candidate and one or two laboratories as fall-back candidates should be considered. r! The quality of the laboratory service provided is dependent on various factors. The project manager should be able to control the quality of the information (e.g., samples) provided to the laboratory. It is extremely important that the project manager communicate to the laboratory all the requirements relevant to the project. This includes the number of samples and their matrices, sampling schedule, parameters and constituents of interest, required analytical methodologies, detection limits, holding times, deliverables, level of QA/QC, and required turnaround of analytical results. CGRS,Inc. Field and Laboratory Quality Control • General Quality control checks are performed to ensure that the data collected is representative and valid data. Quality control checks are the mechanisms whereby the components of QA objectives ore . f monitored. Examples of items to be considered are as follows: 1. Field Activities: • Use of standardized checklists and field notebooks; _ • Verification of checklist information by an independent person; • Strict adherence to chain-of-custody procedures; • • Calibration of field devices; • Collection of replicate samples; and } • Submission of field blanks, where appropriate. }• 2. Analytical Activities: • Method blanks; ' • Laboratory control samples: • Calibration check samples; • replicate samples; • Matrix-spiked samples; • "Blind" quality control samplers; • Control charts; • Surrogate samples; • Zero and span gases; and • Reagent quality control checks. Blind Duplicates Blind duplicate samples will be collected for 10% of the samples collected or once per site, whichever is greater. These blind duplicate samples will be forwarded to the laboratory as a check of laboratory reproducibility. • } CGRS,Inc. Equipment(Rinseate)Blank The equipment (rinseate) blank is designed to identify potential cross-contamiration in the field between sample sources due to deficient field cleaning procedures. This blank also addresses field preservation procedures, environmental site interference, integrity of the source blank water for field cleaning and those concerns singularly addressed by the travel blank. Equipment blanks are taken once per site, when equipment is cleaned in the field. This provides a quality control check on field cleaning procedures. Field Blank - Field blanks are used to evaluate the sample container filling procedure, the effects of environmental contaminants at the site, purity of preservatives or additives and those concerns uniquely addressed by the travel blank. Field blanks are taken downwind of the most contaminated area of the site by filling laboratory cleaned and prepared sample containers (appropriate for the parameters group) with deionized or organic-free water supplied by the laboratory. The blank sample container is then sealed, grouped, transported and stored with the real samples collected for the same parameters group. Travel(Trip)Blanks The travel blank is designed to address interferences derived from improper sample container cleaning preparation, contaminated source blank water, sample cross-contamination during storage/transport and extraneous environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Travel blanks are composed in the appropriate sample container using source blank water. Preservatives or additives are added if required for the parameters group. Travel blanks are then sealed and stored in the ice chest where real samples will be stored and transported. Travel blanks are to originate at the laboratory providing the blank water for the equipment and field blanks. CGRS,Inc Protocol for Analyzing Blank Samples If used, the equipment blank will be analyzed first. If contamination is found to be,present, the field blank will then be analyzed. If the equipment blank is not used, the first blank analyzed will be the field blank. If any blank is found to be contaminant-free, the sequence of analyses will be terminated. I . : i APPENDIX C IQuality Assurance Project Plan • I 1 • QUALITY ASSURANCE PROJECT PLAN FOR THE VARRA COAL ASH BURIALPROJECT WELD COUNTY, COLORADO 1.0 Introduction - This Quality Assurance Project Plan (QAPP) briefly describes the field data collection activities and laboratory analyses being conducted as part of the Varra Coal Ash•Burial Project in Weld County, Colorado. The work described in this QAPP is being conducted to address possible concerns related to coal ash burial in saturated mediums. Described in the sections below are the project objectives, scope of work, sample handling and Chain-of-Custody procedures, data quality assurance, and laboratory deliverables. 2.0 Objectives The data being collected are intended to support the following objectives: • Identify potential on-site and off-site contamination to soils,.,groundwater, and surface water that have occurred from past operations at the various sites; • Determine the extent of contamination(if any); ( • Characterize hydrogeologic and surface water conditions in sufficient detail to describe hydrostratigraphy, direction and velocity of groundwater flow, and the relationship between groundwater and surface water; • Develop and implement monitoring programs for the various media; and, • Employ industry standard field and laboratory methods ,suitable to meet CLP or equivalent(such as EPA QC Level III) Data Quality Objectives. 3.0 Scope of Work The scope of work for this project involves, development of Health and Safety and site-specific Work Plans, field investigations, laboratory analysis of water samples, analysis of hydraulic and { hydrogeologic properties, and the preparation of a report detailing the results of the investigation. Field investigative techniques include soil and groundwater sampling using direct push and hollow stem auger techniques. 3.1 Sample Identification A sample identification scheme will be used that maintains consistency for the names of boreholes and monitoring wells, as well labels affixed to each sample container, and entered on to the Chain-of-Custody(COC)forms. The following scheme will be followed: 1. Samples from soil borings that are not converted to monitoring wells are named SB; 2. Samples from soils collected during drilling of monitoring wells are named MW; and 3. Depth of soil sampled indicated by @(depth interval). For example a soil sample might be identified as MW-4 @ 10-11.5. Groundwater, surface water, and sediment samples will be named with no depth interval (i.e. MW-4, SW-4, SED-4, respectively). 3.2 Analytical Suites Analytical procedures for water and soil samples will conform to the USEPA guidelines described in SW 846 (Test Methods for Evaluating Solid Waste/Physical/Chemical Methods, 3"' ed.). Table 1 —C,presents the analyses that are anticipated on the project. The analytical suite at a particular site will be determined on a site by site basis. 33 Sample Custody Strict chain of custody(COC)protocol will be maintained throughout the life of the field program and will be controlled through the use of a COC Record supplied by the laboratory. The following procedures will be used to document, establish, and maintain custody of field samples: • Sample labels will be completed for each sample using waterproof ink; making sure that the labels are legible and affixed firmly on the sample container; • All Sample-related information will be recorded in the project log book; • } • The field sampling technician will retain custody of the samples until they are transferred or properly dispatched to a laboratory; and, •. • As fieldwork is conducted the on-site CGRS technical lead will determine whether these procedures are being followed, if corrections need to be made, and if additional samples are required. 3.3.1 Chain of Custody Records A Chain of Custody Record will be maintained in the field for all samples to be shipped to the laboratory for analysis. The three lines of information to be entered into the COC box titled "Project or P.O.#"are: Line 1. Client Name, i.e. "Varra Companies" Line 2. Site Name, i.e. "Pit 112" Line 3. Site Number, i.e. "2755" The three lines of information will be provided on the laboratory paper (hard copy) reports as a page header, and on the electronic deliverables as three individual fields in each analytical record. Varra Companies Quality Assurance Project Plan Page 1 The "Sample Identification" entries to the COC will be completed as described in Section 3.1 of this QAPP. • 3.3.2 Transfer of Custody and Shipment Due to the evidentiary nature of field sample collection, the possession of samples must be traceable from the time the samples are collected until they are introduced as evidence in legal proceedings. A sample is defined as being under a person's custody if any of the following I-.• conditions exist: (1) it is in their possession, (2) it is in their view after being in their possession, (3) it is in a secure locked location after having been in their possession, and (4) it is in a designated secure area. The following procedures will be used in transferring and shipping samples: • Field personnel will maintain detailed notes in field logbooks,. documenting the collection and identification of the required samples. The logbooks will be checked . against the COC records for completeness and traceability. • A COC record will accompany all sample shipments. When transferring samples, the individuals relinquishing and receiving will sign, date, and note time on the record. The COC documents transfer of sample custody from the field sampling technician to another person or to the laboratory. • Each cooler is to contain samples from one site. No mixing of samples from multiple sites will be allowed in a given cooler. • Samples will be properly packaged for shipment and shipped to the laboratory for analysis with a separate signed COC record enclosed in each sample box or cooler. Two copies of this record will accompany the samples to the laboratory. The laboratory maintains one file copy, and the completed original will be returned to the project manager as part of the final analytical report. This record will be used to document sample custody transfer from the field sampling technician to the laboratory or to the CGRS offices. Just prior to shipment to the laboratory, coolers will be secured with custody seals. • Whenever samples are split with a facility operator or government agency, a separate COC record will be prepared for those samples andso marked to indicate with whom the samples are being split. • The COC record showing identification of the contents will accompany all packages. The original record will accompany the shipment and the field team leader will retain a copy. • A bill of lading will be used for all samples sent by common carrier. Receipt of bills of lading will-be retained as part of the COC permanent documentation. yam Companies Quality Assurance Project Plan Page 2 3.33 Laboratory Custody Procedures The laboratory, at a minimum, will check all incoming samples for integrity and note any observations of the original COC record. Each sample will be logged into the laboratory system by assigning it a unique laboratory identification number. This number and the"field sample identification number will be recorded on the laboratory report. Samples will be stored and analyzed according to the methods described in Section 3.1. The original COC record will be returned to the CGRS project manager for filing. The laboratory sample custodian will use the following procedures to maintain the COC records once the samples arrive at the laboratory: • The samples received by the laboratory will be cross-checked to verify that the information on the sample labels matches that on the COC record included with the sample shipment; • The "Received by Laboratory" box on-the COC record will be signed on receipt. Any discrepancies between the COC record and the shipment contents will be resolved as soon as possible through communication with CGRS personnel; • The status of the sample receipt and analysis will be tracked within the analytical laboratory by a laboratory information management system (LIMS) or equivalent computerized management system. For data that are input by an analystand processed using a computer, a copy of the input data will be kept and identified with the project number and any other needed information. The samples analyzed will be clearly noted and the input data signed and dated by the analyst. 3.4 Laboratory Deliverables The laboratory is required to submit EPA QC Level III data packages (CLP-equivalent).to CGRS, Inc. within 21 days from the date of acceptance on the Sample Receipt Form. Details of.the deliverables are presented below. • Sample Receipt- The laboratory will complete and submit a "Sample Receipt" form for all sample shipments received. The purpose of the form is to note problems with sample packaging, COCs, and sample preservation. Problems noted on the form will be communicated to CGRS, Inc. as soon as possible. • Reporting of Analytical Results — For each analytical method performed, the laboratory will report all analytes as detected concentrations or as less than the specific limits or quantification. All samples with out-of-control spike recoveries • being attributed to matrix interferences should be designated as such. All soil/sediment.and solid waste samples should be reported on a dry-weight basis with percent moisture-also reported. Also, report dates of extraction/preparation, dates of analysis, and dilution factors when applicable. An electronic deliverable(LIMS)will be provided that conforms to the CGRS project data requirements. An example of the data deliverable is provided as an appendix. • Internal Quality Control Reporting—Internal QC samples should be analyzed at rates specified in the method (SW-846). At a minimum, QC deliverables will consist of laboratory blank results, sun`ogate spike percent recoveries, results of MS/MSD analyses, laboratory control sample data, laboratory duplicate results, and if requested, calibration and tuning data. The internal QC data will not be delivered unless requested by Varra or CGRS personnel. Varna Companies Quality Assurance Project Plan Page 3 33 Field and Laboratory QA/QC Procedures Quality control checks are performed to ensure that the data collected are representative and valid. Quality control checks are the mechanisms whereby the data quality okjectives are monitored. The quality control samples to be collected on the project are described below. • Duplicate Samples — As a check for laboratory reproducibility, blind duplicate Samples(unknown by the laboratory to be duplicates) will be collected and submitted to the laboratory at a rate of one every 10.water samples collected, or once per site, whichever is greater. No duplicate soil samples will be collected. • Field Blank Samples—To evaluate sample bottle filling procedures and the effects of environmental contaminants at the site, one VOA water sample per site is collected in laboratory-cleaned and prepared containers of deionized or organic-free water supplied by the laboratory. Field blanks are collected downwind of the most contaminated area within a site. The sample is sealed, labeled and shipped with the real samples collected for the same parameter group. • Travel(Trip) Blanks—Trip blanks are intended to address interferences derived from improper sample container cleaning, preparation, contaminated source blank water, sample cross-contamination during storage and shipment, and environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Trip blanks will originate at the laboratory and will consist of VOA vials filled with source blank water, and will be sealed and stored in the cooler where real samples will be stored and shipped. • Equipment(Rinseate) Blanks-Rinseate blanks, intended to provide quality control on field cleaning procedures, will be collected once per site. • • �44 • • Varna Companies Quality Assurance Project Plan Page 4 • • Lfl Table l - C Summary of Parameters, Sample Containers, Holding Times, and Analytical Methods - . ltaraA[Cter Mattix No and Type or W..,140sThue{1) Meffiodcal Contannet5 (2) Free Cyanide Water 1-200m1P,G 14 days,4C,NaOH to ph>12 EPA 300.0 • ' Chloride • Water 1-200 ml,P,G 28 days no preservative required EPA 300.0 Fluoride Water 1-500 ml;P 28 days no preservative required EPA 300.0 Sulfate Water 1 -200m1,P • 28 days cool to 4C EPA 300.0 4 ' Nitrate Water 1 -100 ml,P,G 48 hours cool to 4C EPA';300:0 • Mercury Water 1-500 ml P,G 28 days,HNO3 to p11<2 245.1/7170 TotalMetals(RCRA) Water 125-500 ml nalgene (Red dot) • 6 months except Mercury at 28 days. For 6010/7000 • water,preserved with fINO3,not filtered. Dissolved Metals(RCRA) Water 125-500 ml nalgene 6 months except Mercury at 28 days. Filtered. 6010/7000 (Green dot) and preserved in Lab. [- Anions/General Chemistry • Water 250 ml nalgene(White 28 days 200 Series dot) Notes: (I)All collected samples to be kept cool(4 degrees C) ' (2)USEPA Method,SW-846(Revised),1986 1 Table 2- C Content of Digital Analytical Deliverables (LIMS Download) Or+grn of Data 0enerated by CGRS Generated un Lab T aboratory Name of Data Example of Dataered Y b AnalY!,ca Eleld Drgltal 11:ata and Entered on ..::.....:......... COMPANY_NA Varra Energy • X SITE- NAME Coal Ash Project X X' SITE_NO 2755aa X • SAMPLE_ID1 MW-1 SAMPLE_DAT 08/27/97 X LAB ID L15316-01. X MATRIX Water X • METHOD, M6010 ICP X DATE_ANALY 09/04/97 X ANALYTE Silver,total(3051) X TEXT RESUL (blank if ND) X NUMBER_RES (blank if ND) X 'QUALIFIER U X ' DILUTION 106 ,X MDL 0.50000 PQL 3.00000 X mg/Kg X UNITS X DATE_RECEI .09/03/97 X DATE_EXTRA 09/04/97 X CAS_ 007440-22-4 BATCH_ID WG47359 X • Ij I 7 TABLE 3 -C Analytical Suites • Field Pilot Test Varra Coal Ash Project Weld County, Colorado CGRS No. 1-135-2755 • Anal to ' Standard Units Aluminum 5.000 . mg/L Arsenic 0.050 - mg/L .,,,- Barium 2.000 mg/L Boron 0.750 mg/L Cadmium 0.005 mg/L Chromium 0.100 mg/L Colbalt 0.050 mg/L Iron 0.300 mg/L Lead 0.050 mg/L Manganese 0.050 mg/L • Mercury 0.002 mg/L , Selenium 0.050 mg/L Chloride 250 mg/L - Fluoride 2.0 mg/L Free Cyanide 0.20 mg/L pH 6.5-8.5 s.u. . Sulfate 250 mg/L Total Dissolved Solids 500 - mg/L mg/L-milligram per liter - s.u.-standard units .' . • lAl � L WORK PLAN VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COUNTY COLORADO • CGRS NO. 1-135-2755 by CGRS, INC. December 29, 1998 lUl Wrfi CGRS,Inc. Table of Contents 1.0 INTRODUCTION 1 • 1.1 Objectives 1 1.2 Background Information 2 1.2.1 Local Geology/Hydrology 2 1.2.2 Coal Ash Source 3 2.0 INITIAL LABORATORY TESTING 3 2.1 Hydraulic Conductivity 3 ' 22 Porosity 3 23 Analytical Data 4 2.3.1 SELP 4 2.3.2 SGCLP 5 2.3.3 TCLP 7 2.3.4 SGLP 7 3.0 PILOT STUDY 7 • 4.0. PROJECT SCHEDULE 9 5.0 'ORGANIZATION AND STAFF ASSIGNMENTS 9 3.1 Project Personnel 9 • 3.2 Subcontractors 9 6.0 OVERVIEW-QUALITY ASSURANCE/QUALITY CONTROL 9 7.0 REMARKS 10 FIGURES: Figure 1 -Site Location Map • •, Figure.2—Registered Well Location Map Figure 3—Area Use'and Site Condition'Map APPENDIX: Appendix A—Selected Data—Groundwater Quality and Hydrogeology fo the Laramie-Fox Hills Aquifer in the Milton ' Reservoir Area,Weld County,Colorado Appendix•B—Methods and Procedures Appendix C—Quality Assurance Project Plan 1 CGRS,Inc. WORK PLAN VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO CGRS NO. 1-135-2755 • 1.0 INTRODUCTION This document presents the proposed work scope for the evaluation of coal ash burial in saturated media. The field investigation will be performed in conjunction with a. variety of laboratory studies in order to evaluate potential liabilities or benefits associated with coal ash burial. Specifically, this project addresses issues associated with the reclamation of gravel quarries under saturated conditions. A variety of laboratory experiments were conducted in order to evaluate coal ash leaching potentials for different pH ranges relative to effluent pore volume. The information generated by this project will be invaluable toprivate companies or regulatory agencies insofar as evaluating under what conditions coal ash can be placed without incurring significant liability. 1.1 Objectives The purpose of this project is to identify potential liabilities with the reclamation of gravel quarries with coal ash and to determine if coal ash meets the criteria for classification as an inert fill. Specific objectives for the Varra Coal Ash Burial Project are to determine: • Leaching characteristics of coal ash with respect to varying water quality conditions; • Permeabilities of various types of coal ash (bottom and fly ash); • Affects of coal ash burial-on local hydrology and water quality; • Hydrogeologic properties of coal ash; and • Physical characteristics of coal ash in saturated media. 1.2 Background Information • 1.2.1 Local Geology/Hydrogeology The study area is an active gravel quarry located in the NW 1/4, Section 31, Township 3 North, Range 68 West, 6th P.M., Weld County Colorado (Figure 1). The surficial geology of the area as documented by Colton, 1978, varies between wind blown deposits of clay, silt and sand and sandy to gravelly alluvium, which are Holocene in age. Colluvium consisting of bouldery to pebbly sandy silt and clay may contain and interfinger with alluvium of various ages. 1 CGRS,Inc. The depth to groundwater at the site generally varies between three and ten feet below ground surface (bgs). The inferred groundwater flow direction is to the northeast roughly parallel to the St. Vrain River drainage. Water well records obtained from the Colorado Division of Water Resources indicate that one well may be located within one quarter mile of the proposed test plot. The registered well owner is Dakolios Construction and the permitted use of the well is industrial. The location of registered wells within a half mile radius of the proposed test plot are depicted on Figure 2. Field verification of well 'locations and construction details, if available will.be performed prior to project start-up. Groundwater quality data for the immediate study area are limited. Reeder, 1993, describes in detail the regional hydrogeology near the area of interest. Water quality data for 36 domestic wells completed as bedrock aquifers (Larimie-Fox Hills Formation) in the Milton Reservoir were compliled by Reeder. A review of water quality data indicate that all wells sampled exceeded water quality. standards for total,suspended solids and a large percentage exceeded .standards for pH. Field and analytical data documented by Reeder and other background information are presented in Appendix A. 1.2.2 Coal Ash Source Public Service coal comes from a number of Colorado mines in Routt, Moffat, Delta.and • Gunnison counties. These mines include West Elk, TwentyMile, Powderhorn, and ColoWyo. This coal is normally purchased under long term contracts which specify certain analytical parameters. Therefore, the chemical and physical properties of the coal (and resulting ash) do not change significantly from year to year. Analytical information for each of these coal sources is available .as is the analytical information on the ash. This information has been provided in our earlier submittal. Comparisons of analytical data completed in the early 1990s with recent data indicate little variation in any of the ash constituents. • CGRS, Inc. 2.0 INITIAL LABORATORY TESTING • Public Service Company generated analytical data indicating.that fly ash is not a characteristic hazardous waste. Numerous analytical methods were used such as toxicity characteristic leaching procedure (TCLP). CGRS in conjunction with Colorado State University Groundwater Program performed a number of tests which included: • Hydraulic Conductivity Testing (Permeameter Test); • Porosity Determination;• • Sequential Extraction Leaching Procedure (SELP); • Synthetic Ground Water Column Leaching Procedure (SGCLP) • Toxic Characteristic Leaching Procedure (TCLP); and • Synthetic Ground Water Leaching Procedure (SGLP). A discussion of these tests and the loading calculations to the environment is provided below. • 2.1 Hydraulic Conductivity The hydraulic conductivity of the ash was performed using either a "Constant Head" or "Falling Head" Permeameter., The Constant Head Permeameter works better for high permeability porous materials and the Falling Head Permeameter works best for low permeability porous materials. With either test the flow rate and the potentiometric head loss are measured through a sample of the ash. The hydraulic conductivity was then calculated using Darcy's Law. The hydraulic conductivity of the ash is required to determine the- expected rate of groundwater flow through the buried-'ash and the effects of burial on ground • water flow patterns. :.a 2.2 Porosity • Porosity is the ratio of the volume of the voids to the bulk volume of the sample. With this test the volume and dry weight of a sample of ash was measured. The ash was then saturated with water under a vacuum pressure and the weight of the saturated sample measured. For saturated conditions the volume of the voids is equal to the volume of the water. The porosity is required to determine the pore volume for the ash. The results of hydraulic conductivity and porosity testing are summarized in Table 1. 3 - CGRS,Inc. TABLE 1 -Results for Hydraulic Conductivity and Porosity Tests Sample 1D Hydraulic Porosity Conductivity K (ft/day). Cherokee Silo Ash 2/3 • 0.24 0.51 Cherokee 4 Ash with Sodium 0.23 0.46 Class F Silo Ash with-Gypsum 0.09 0.49 Bottom Ash 178. 0.51 Recycled Concrete 111. 0.29 Recycled Asphalt 130. 0.33 The bottom ash, the recycled concrete and the recycled asphalt all had relatively high hydraulic conductivity values in the range of 111 to 178 feet/day. The three fly ash samples had very low hydraulic conductivity values in the range of 0.09 to 0.24 feet/day. The porosity of the fly and bottom ash ranged from 0.46 to 0.51. These values are characteristic of very fine porous materials. The porosity of the recycled concrete and asphalt was 0.29 and 0.33, respectively. 2.3 Analytical Data 2.3.1 "Sequential'Extraction Leaching Procedure" (SELP) • The purpose of the "Sequential Extraction Leaching Procedure" (SELP) test was to determine the total quantity of the various chemical contaminants that may be potentially leached from the ash. The SELP test used synthetic groundwater with varying pH levels as the leaching fluid(s). With the SELP test, a specified weight (e.g. one kilogram) of the ash was combined with a 4 CGRS,Inc. ��` specified volume of water (e.g._one liter) and agitated by rolling for a specified period of time (e.g. 18 hours). This represented a single extraction. The concentration of the chemical contaminant was then measured in the water. The SELP test was repeated for several sequential extractions until most of the chemical contaminants have been extracted from the ash. This normally requires three or more extractions. Only two extractions were performed due to budgetary constraints. • The SELP test was repeated for synthetic groundwater with varying pH values to represent a range of possible site conditions. Synthetic groundwater(s) with pH values of 5, 7 and 8.5 were - used. The first extraction from the SELP test for each pH value was analyzed for the full suite of chemical compounds.These include: • Sulfate • Chloride • Fluoride • Cyanide. • • Mercury • Nitrate • Nitrite • 20 other metals (Aluminum, Antimony, Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, .Lithium, 'Manganese, Nickel, Selenium, Silver, Thallium, Vanadium and Zinc)_ Conductivity and pH will of the leachate was measured at CSU prior to sending the sample to the laboratory for chemical analyses. The SELP test was conducted at CSU. The extracted water samples from the test were sent to Analytica Environmental Labs for chemical analyses. Analytical results from the first extraction were used to identify those compounds to be analyzed for in subsequent extractions of the SELP test and in the SGCLP test. Those chemical compounds, which were either non-detect or detected at very low concentrations during the first extraction were not analyzed for in subsequent extractions of the SELP test or in the • SGCLP test. • 5 CGRS,Inc. 2.3.2 "Synthetic Groundwater Column Leaching Procedure" (SGCLP) The purpose of the "Synthetic Groundwater Column Leaching Procedure" (SGCLP) test was to determine the rate as a function of pore volume at which the chemical contaminant will be leached from the buried ash. The SGCLP test used synthetic groundwater with varying pH levels as the leaching fluid(s). With the SGCLP test, a specified weight (e.g. one kilogram) of the ash was placed in a column. Once the column was saturated, the testing period began. One pore volume of water was passed through the column and the concentration of the various contaminants measured in the outflow water. The SGCLP test was then repeated for several sequential pore volumes of water. The hydraulic head on the column was adjusted so that one pore volume of water was passed through the sample in about 8 hours. Water samples were be obtained for analyses at 2, 4 and 8 pore volumes of water flow through. The SGCLP test was repeated for synthetic ground water with varying pH values to represent a range of possible site conditions. Synthetic ground water(s) with pH values of 5, 7 and 8.5 were used as the leaching fluid(s). For the fly •ash, which has a very low hydraulic conductivity, the SGCLP test was conducted for 1,2 and 4 pore volumes. For the bottom ash, the recycled concrete and the recycled asphalt, which have high hydraulic conductivity, water • samples were analyzed at 2, 4 and 8 pore volumes. The chemical analyses for the first extraction of the SELP test was used to determine thesuite ' of chemical compounds of interest in the SGCLP test. Chemical compounds, which were either non-detect or detected at very low were eliminated from further testing. The SELP test is a ' highly agitated test where as the SGCLP test is not. The SGCLP test was conducted at CSU with the collected water samples sent to Analytica Environmental Labs for chemical analyses. • Sulfate •Chloride • Fluoride • Cyanide • Mercury • Nitrite • Nitrate • 10 other metals from the following list of 20 metals (Aluminum, Antimony, • Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Lithium, Manganese, Nickel, Selenium, Silver, Thallium, Vanadium and Zinc). Conductivity and pH will of the.leachate was measured at CSU•prior to sending the sample to the laboratory for chemical analysis. • . 6 • CGRS,Inc. 2.3.3 "Toxic Characteristics Leaching Procedure" (TCLP) - The "Toxic Characteristic Leaching Procedure" (TCLP) test is designed to determine the mobility of toxicity characteristic constituents and is the EPA method for classifying wastes as hazardous or non hazardous based on toxicity. The full suite of chemical compounds (see list for SELP test) was analyzed during the TCLP test. , 2.3.4 "Synthetic Ground Water Leaching Procedure" (SGLP) The "Synthetic Ground Water Leaching Procedure" (SGLP) test is identical to the TCLP test with the exception that synthetic groundwater is used as the leaching fluid. A description of the TCLP test is provided above. The SGLP test was developed to simulate geochemical conditions more closely approximating natural ground water than for the TCLP test. The results of the SGLP are directly comparable to the TCLP test. Groundwater obtained from the study area was used for the test. The full suite of chemical compounds (see list for SELP test) were analyzed during the SGLP test. The groundwater used in the SGLP test as the leaching fluid was analyzed for full suite of chemical compounds. The difference in the before and after chemical concentrations in the ground water used in the SGLP test represents the concentration of the chemical contaminants leached from the ash. • 3.0 PILOT STUDY • The project start-up will consist of developing a work plan and a site specific Health and Safety plan. All required permits will be obtained prior to conducting the investigation. Utility companies will be contacted for the location of all underground utilities prior to commencing investigative . activities (telephone, sewer, electrical, cable television, natural gas lines, oil and gas pipelines, buried tanks and wells). Prior to initiating coal ash placement, the local groundwater flow direction will be estimated from groundwater monitoring wells installed to determine hydraulic characteristics of the local aquifer and local groundwater quality. It is anticipated that ten wells will be installed to monitor 7 -CGRS,,Inc. L variations in local aquifer characteristics as a result of coal ash burial. The hydraulic conductivity will be estimated by performing slug and/or aquifer testing. Prior to initiating the pilot project groundwater quality samples will be obtained and analyzed for pH, TSS, TDS, and other relevant parameters identified in the laboratory leaching tests. Samples will be obtained from no less than one up-gradient and two down gradient wells. The anticipated locations of the monitoring wells are depicted on Figure 3. Typical monitoring well construction details are presented in Appendix B. The effects on groundwater quality-and hydrology as a result of coal.as burial will be evaluated by placing roughly 400 tons of coal ash within a trench at the location shown on Figure 3. The coal C ash will be placed so that the water table intersects the coal ash and that the seasonal fluctuation of the water table will be within the coal ash bed. The coal ash will be buried in a'trench measuring 10 feet in width, 100 feet in length and roughly 10 feet in depth. In order to evaluate hydraulic characteristics of bottom ash and fly ash, one-half of the trench will be filled with fly ash. A native soil divider will be left and the other half of the trench will be filled with bottom ash and fly • .ash. Bottom ash will be placed in the lower one-half of the saturated portion of the trench and fly ash will be placed to one foot below ground surface. Approximately one foot of native soil will be place over the entire trench. • Variations in water quality will be verified through quarterly water quality monitoring for analytical parameters identified in the laboratory quality assurance plan Appendix C. The results of the analyses will be submitted to the Colorado Department of Public Health and Environment, Division of Minerals and Geology and Weld County Health Department. Within one week of coal ash burial water quality samples-will be obtained from all monitoring wells. Water quality samples will be obtained on a weekly basis for one month and then on a monthly basis. The length of sampling will be determined after reviewing the initial analytical results; it is not anticipated that more than three months will be required before water quality parameters equilibrate. • 8 CGRS,Inc. 4.0 PROJECT SCHEDULE Based on laboratory experiments it is anticipated that approximately three months will be required to perform field activities. The project length is based partially on pore volume flow thorugh calculations. It is anticipated that a summary report will be submitted within four months of coal ash placement. 5.0 ORGANIZATION AND STAFF ASSIGNMENTS 5.1 Proiect Personnel Mr..Joby Adams of CGRS will serve as project coordinator and contact to Varra Companies. Mr. Chester Hitchens will serve as field coordinator and will be responsible for supervising drilling activities and will perform water quality sampling as well. 5.2 Subcontractors Subcontracted services for this project will include Universal Drilling of Brighton, Colorado, and Quanterra Laboratories of Brighton, Colorado. Universal Drilling will be responsible for drilling soil borings and completing the borings as groundwater monitoring wells. Quanterra Laboratory will analyze groundwater samples for inorganic related constituents. 6.0 OVERVIEW-QUALITY ASSURANCE/QUALITY CONTROL Quality assurance (QA) is a management system for ensuring that all information, data, and decisions resulting from the project are technically sound and properly documented. Quality Control (QC) is the functional mechanism 'through which quality assurance achieves its goals. Quality control programs, for example, define the frequency and methods of checks, audits, and reviews necessary to identify problems and dictate corrective action to resolve these problems,thus. ensuring data of high quality. Thus, a QA/QC program pertains to all data collection, evaluation, • and review activities that are part of the project. The use of qualified personnel for conducting various portions of the project is of paramount importance to an effective QA/QC program. This pertains not only to qualified QA/QC specialists, but also to specialists in other fields, including hydrogeologists, air quality specialists, soil 9 CGRS,Inc. scientists, analytical chemists and other scientific and technical disciplines. The project manager should ensure that qualified specialists, primarily individuals with the proper education, training, and experience, including licensed or certified professionals, are directing and performing the various project activities. The same general principles apply to selection of contractors and/or outside laboratories. Mother important aspect of the QA/QC program is the communication between the QA/QC organization and the project manager. Regular appraisal by the project manager of the quality aspects related to the ongoing project data-gathering efforts provides the mechanism whereby the established objectives may be met. QA/QC procedures should provide details relating to the schedule, information to be provided, and the mechanism for reporting to the project-manager. Reports to the project manager should include: • Periodic assessment of measurement data accuracy, precision, and completeness; • results of performance.audits; • Results of system audits; • Significant QA/QC problems and recommended solutions; and • • Resolutions of previously stated problems. The individual responsible for preparing the periodic reports should be identified. These reports should contain a separate QA/QC section that summarizes data quality information. The Quality J Assurance Project Plan is presented as Attachment C. 7.0 REMARKS The scope of work and estimated costs are based upon current available information and our understanding of this project. As the project develops, changes to the project scope of work may be required. If changes in the scope of work are dictated by the needs of the project, these changes will be presented prior to implementation. 10 1 I CGRS,.Inc. ' This report was prepared by CGRS, INC. Date Joby L. Adams Principal/Hydrogeologist Reviewed by: Date Dr. James W. Warner, P.E. Groundwater Program Leader Colorado State University 11 CGRS,Inc. L , APPENDIX A SELECTED DATA_Groundwater Quality and Hydrogeology of the Laramie-Fox Hills Aquifer in the Milton Reservoir Area,Weld CountyColorado lb Fort Collins • Latimer Greeley County Study Area • Wan, 11 ��1a��y„ :;,p1u141„1111 laip: Boulder . , County LongmontWeld County • `,4, Boulder - • Adams County Jefferson _ County • . .irn—nrp Golden Denver . Arapahoe . • • County • • 0 feet 52300 105600 SCALE: 1:633,600 Figure 1 - Location of the study area. • 2 1r a A.J I .;�_� i ?• Its I _ I c r _ .. 4nr .. �: - b� .rpw-� _— .. 9r r ` 1\ J/r- _�'�= :I e! '�r ^mot Y�� ' , .. -- I \�• - . '• r Taws I I - rl�'a� J I I S/ J I _J r ee':`: • T I • .. • - 1 ' i:--\ L . or .r:Imo. F^ s� r-- • .—. `'I • � a Niece✓ _4; I i _ •('IQL— / > is .`ry :ry �d S 9 • .\ . • II 1, 1.awkfi , •� --l_l� �._,`^ i t• I =mac= -t _ ' rl YG `—C✓• .P: I ��' `b- 11::: _I , '-, a , ti � _am, I ; i ill y � , ` • ( \ __ SiP �._;,'- 4 Imo^-, _� '-',`c----''•��- . _ — �" — — , 1�=; �� . , a{, , `tip- ,v` \. ' , ,.-_ • ,_,____.„,•_:_' "., " . t IN'. • ; .lam- i-- --- r , �:�: I t r=—�- A--- I"N P )cr i • "efiTin �J:ti a . T i t I I \ -_ ..-y. _ _ s4,- II as -.411---7,-;;---, 1 -�l _ I 7''� kIr- _ , ; ; ; is Ir- it X. X O.,',MSS 20 30 W mc... EAS , EXPLANA1ION -APPROXAIATE EMIT OF THE UMME OUTCROP OF PRECAMBRIAN R0OL FOX IDLLS AQUIFER ' I AReA 1R IN 6Y THE LAAAAI2- DATA POINTS. FOX IPLLS AQUFER Hod psuwed e,1961 FAULT—Oath.,.Iv.Wnd a Ila.d m�rd lmm sFl mar..a- -exn__POTEiOlRanut• CONTOUR—Slows tan PkI•SS k e Y'd aleWa co a Do LJ r.oat Deaddntr law.riu Ht.. t4 Dead hi l VD I t D-- • fpmt e.I..S 100 Ian. ''r d pm I...4 4 Figure 9 - Potentiometric kap of the R1-f Aquifer in the Denver Basin (Robson and Banta, 1987) . 6) 34 • GROUNDWATER QUALITY OF THE AREA The compiled groundwater quality data were compared with Federal and State Applicable or Relevant and Appropriate Requirements (ARAR's) . The ARAR's were obtained from the Colorado Department of Health (1985) water quality numeric recommendations and standards. Table IX summarizes the ARAR's and water quality parameters which exceed applicable standards. Sulfate, ,. iron, fluoride, pH, ROE and, manganese parameters were found to exceed applicable standards. Figure 19 shows the distribution of samples exceeding ARAR concentrations. With the exception of pH and ROE, the highest percentage of samples that -exceed ARAR's are from Data Groups "B" and "C" . Over 60% of Data Group "C" samples and; 45°- -`. Data Group "B" samples exceed the ARAR' s for sulfate concentrations. Additionally, the ARAR Concentration for dissolved iron is exceeded by 36% of the samples from Data Group "B". Thirteen percent of the Group "C" samples exceed the ARAR for fluoride. Over 82% -of the samples from Data Group "A" exceed the applicable-'water quality standard for pH. All of the samples (groups "A" , "B" and "C") exceed the ARAR value (500mg/1) for ROE (TDS) . • 67 �_.2 {{ Table IX - ARAR's and Summary of Exceedances . 'i PARAMETER APPLICABLE STANDARDS PERCENTAGE OF SAMPLING STATIONS mg/L " EXCEEDING STANDAkuS , GRWP A GRWP B GRWP C Na NS • " 504 250 CDH GW DVSTD 0% 45% 63% Ca NS ' Mg NS Fe 0.3 - CON GV DVSTD 8% 36% 13% I. Fl 2.0 - CDH GW DVSTD OX OX 13X Cl 250 - CDH GV DVSTD 0% OX O% t pH 6.5=8.5 - CDH CV DVSTD 82% 36% 25% CO3 .N5 ROE (TDS) 500 - CDH GW DVSTD 100% 100% 100% EC NS NO3-N 10.0 - CDH GV DVSTD 0% 0% 0% K NS Ba 1.0 - CON GV DVSTD 0% OX OX Co NS Pb 0.05 - CDN GV'DVSTD OX 0% OX , Mn 0.05 - CDH OW.DVSTD 0% 18X 38% Mo 0.1 - CDH AG 0% 0X OX. I. Sr NS V 0.1 - CDH AG 0% OX 0% Ai Be 0.1 - CDH AG 0% 0% OX i Cu 1.0 - CDH GW DVSTD - 0% OX OX. P( Li 2.5 - CDH AG 0% OX 0% • Si 4S Zn 2.0 - CDH AG 0% OX L_ Lis Cd 0.01 - CDH OW DVSTD 0% 0% 0% ,Ag 0.05 - CDH GV.DYSTD 0% OX OX Cr 0.05 - CDH GU DVSTD OX OX 0%Li , Ni 0-2 - CDH AG 0X 0% OX ' t f ICDH - Colorado Department of Health • - SW - Surface Water GV - Grourriwater ` DVSTD - Drinking Water Standard NS - No Standard NA - Not Available 1 i L . al 68 Ki , • • - DISTRIBUTION OF SAMPLES EXCEEDING WATER QUALITY STANDARDS 1 D-' I 110-s ! i : , U • a a1 301 • SO4 -Fe .F • pH •ROE Mn - - PARAMETERS INS GROUP 1. -GROUP B SS GROUP C .. WATER QUALITY STANDARDS: • 504 250 - Fe 03 • F 20 pH 63-e5 ROE S00 Mn 0.05 •UNITS IN tnp/L except for pH , • Figure 19 - Graph represents the distribution of parameters exceeding ARAB concentrations. , . 69 • ' • Eighteen percent ofData Group "B" samples and 38% of Data Group "C" samples exceed the ARAR concentration (0. 0,5 mg/1) for manganese. .Despite having iron, pH, and ROE parameters exceeding ARAR concentrations (Table IX) , the Data Group "A" samples, representing the groundwater from the K1-f Aquifer, is of better quality for human consumption and domestic purposes than the groundwater of Data Groups "B" and "C" . However, the NA-CO3+HCO3 groundwater in the Kl-f Aquifer may not be suitable as drinking water for persons on low sodium diets. The mean. ROE value of 592 mg/L exceeds the ARAR concentration of 500 mg/L'due to the high mean concentrations of sodium (242 mg/L) and carbonate' + bicarbonate (461 mg/L) ions. The groundwater collected from wells in Data Group "B" was of a lesser quality than the groundwater from Data • Group "r_- . mean sulfate, ROE and dissolved iron ' concentrations within Data Group "B" exceed ARAR' s . The high sulfate concentrations in the ,drinking water obtained from wells in Group "B" may act as a laxative if consumed and the high .iron concentrations may cause staining of plumbing and bathroom fixtures (Driscoll, 1986) . _' In S � I addition, the high soodium-sulfate concentration may not have an aestically pleasent taste or smell. The groundwater quality from wells in Data Group "B" is not suitable for 70 I �f human consumption and most domestic purposes. The water quality of the groundwater sampled from 'wells comprising Data Group "C" is unfit for human consumption. The mean sulfate concentration of 647 mg/L and the mean ROE value of 1390 mg/L exceeds, the ARAR concentrations summarized in Table IX, with the mean ROE value exceeding, 1,000 mg/L the groundwater is classified as brackish (Freeze and Cherry, 1979) . Water which has a dissolved solids concentration greater than 1000 mg/L is a high salinity hazard and is unsuitable for most types of irrigation due to the potential salt buildup in the soil (Robson, 1989) . • 71 JUN-16=1998 10:28 ZEPORT DATE .04/29/98 COLORADO WELLS, APPLICATIONS. AND PERMITS PAGE 1 COLORADO DIVISION OP WATER RESOURCES NIT D CO OWNER INFORMATION ' ACTIVITY STATUS 1ST USED ANNUAL ACRES GEOL WELL HELL WATER SEC LOLAT'N TOWN P CD DATE CD DATE WD MD DD USE DATE APROP IRR AQFR YIELD DEPTH LEVEL COORDINATES DIPS SC SHIP RANGE M 1 62 SIBGRIST CONST 6999 YORK ST DENVER, CO 80229 GRAVEL PIT AP 02/20/90 AU 03/20/90 S 0 G Ow 31 3 N 67 H S 1 62 DAKOLIDS ERNEST R. COIAION. CO 80401 AP 05/03/85 AU 05/07/85 2 H Gw ` SW 21. 3 N 67 W S 2109F 1 62 VARRA COMPANIES 2130 S 95TH ST BROOMFIELD, CO 80020 s'. . EP 07/02(87 EP 02/05/98 5 5 GW ` 0100N.0200E NEWS 31 3 N 67 W S 1-- 1 62 VARRA COMPANIES 2130 S 96TH BROOMFIELD, CO 60020 GRAVEL PIT 1/� AP 07/16/90 AU 09/21/90 5 O G Gw % SWNE 37 3 'N 67 W S 0426AD 1 62 DAKOLIOS CNSTR CO DENVER, CO 80221 AD A 4 • NENW Al 3 N 67 W S 1 62 VARHA COMPANIES 2130 5 96TH BROOMFIELD. CD 80020 GRAVEL PIT AP 01/16/90 AU 09/20/90 5 0 G CW SWNW 31 3 N 67 W S 9938 1 62 ST VRAIN SAN DIST 600 KIMBARK ST STE B LONGMONT, CU 80503 (1,-”1i4-✓ NP 09/14/87 SA 12/12/88 5 3 12/15/87 0.33 IMF 2.50 150 12 22155,2405E NwSE 91 3 N 67 w S '2796M 1 62 ST. VRAIN.SAN. GOO KIMBARK ST STE B LONGMONT, CO 80502 oYS---Cf NP 12/01/87 5A 5 0 07/08/88 OW 18 19335,2410E NWSE 31 1 N 67 W S 32796M 1 62 ST. VRAIN SAN. 600 KIMBARK ST STE B LONGMONT. CO 80502 O+L`r NP 12/01/87 SA 5 0 07/08/88 CW 10 19435,2410! NWSE 31 3 N 67 4 S 2795M 162 ST VRAIN SANITATION DIST 600 KIMBARK ST STE B LONGMONT. CO 80502 5 0 12/15/87 18 19.335,2425E NWSE Al N 67 W S 1 62 VARRA COMPANIES 2130 S 96TH BROOMFIELD, CO 80020 AP 12/21/96 5 G Frvl(fit CH NESW 31 3 N 6'r w s 0195 1 62 GOULD L LONGMONT, CO 80501 l NP 04/06/82 AR 04(27/83 5 8 SWSW 31 3 N G7 W S 54183 1 62 GOULD LEE 12148 WELD CNTY RD 13 'LONGMONT, CO 80501 NP 04/26/89 AR 05/18/89 5 89 CH 75.00 32 10 03905,0100W SWSW 3) 3 N 67 H S _4183 A 1 62 GOULD LEE 12148 WELD CNTY RD 13 LONGMONT, CO 90501 ' NP 04/26/89 AR 05/10/89 5 89 ow 03905,0100w $WSW 31 3 N 67 W 5 3560 1 62 GOULD LEE RT 4 - LONGMONT, CO 80501 S 9 05/03/68 28.00 25 6 SWSW 31 3 N 67 W S i TOTAL P.06 r.G4 JUN-16-1998 10:27 REPORT DATE 04/29/99 \co` RADO WELLS, APPLICATIONS. AND PERMITS •�' DACE 1 COLORADO DIVISION OF WATER RESOURCES IRMIT D CO OWNER INFORMATION ACTIVITY STATUS 1ST USED ANNUAL ACRES CEOL NELL WELL WATER SEC LOCAT'N TOWN F CD DATE CD DATE WD MO DO USE DATE APROP IRR AQFR YIELD DEPTH LEVEL COORDINATES Q172S SC SHIP RANGE M 9705F 1 62 RALPH NIX PRODUCE. INC 1'J400 US IIWY 05 GILCREST. CO 80923 RC 12/02/92. 5 1 02/28/96 1000.00 44. n SENE 28 3 N ;:7 W S 10374 1 62 RALPH NIX PRODUCE 16759 WCR 44 GILCREST. CO 00623 NP 10/30/96 RC 04/24/97 2 II L OW 15.00 70 2'. 2590N,007S6: S4:NE 20 S N 67 W S 2489F K 1 62 KURTZ CATTLE CU % ACKICOLA REALTY 6 MGMT FT MORGAN• C0 00701 NP 11/10/94 2 1 Cw '4i1 2572N,2865E SENW 20. 3 N 67 w S 4124£ 1 62 KURT, HELENS B w MAX 5646 C 17111 AVE- DENVER 20, CO 80220 5 1 05/20/63 - 1000.00 48 5 NWSW 28 3 N 67 W S •5973 1 62 RALPH NIX PRODUCE.'INC 19480 US HWY 85 GILCREST, CO 00623 kC 12/02/92 5' 8 05/10/04 • 15.0n 24 4 SWSN 20 3 N 6.1 w 5 76175 1 62 LESH S AULT. CO 80521 NP 04/27/04 5 D 01/30/85 NE 29 3 N 67 W S 0512 1 62 KURTZ ALBERT K F D ('LATTEVILLE. CO 80651 5 9 4D.Dn 78 4 NENE 29 \ N 67 w 5 1 62 LESH B AULT. CO 80410 TW 04/16/04 5 • NENW 29 3 N 67 W 5 8640MA 1 62 CO DAIRY FARMS C/O LESH DRILLING AULT. CO 00610 NH 02/0./92 0 • ow 0827N_2497w NENW 29 3 N 57 w S '2029VE 1 62 AURORA DAIRY CORP 7388 HWY 66 LONGMONT. CO 00000 AV 02/07/92 5 39 OW 0827N,2497W NENW 79 3 N G'1 W S 14179 1 G2 PSF ASSOCIATES LONCMONI', CO 80501 NP 10/12/82 RC 01/20/04 ., 0 NENW 29 3 N 67 H S 5867F R 1 62 COLORADO DAIRY FARMS 7788 HWY 69 LONGMONT'. CO 80501 NP 02/06/92 SA 07/15/92 5 9 02/26/92 350.011 GW 290.00 25 7 0RXIN,2407W NENW 29 7 N 67 N S :5067F 1 62 PSF ASSOCIATES 7368 STATE HWY 66 LONCMONT. CO 80501 AB 02/14/92- . 5 9 09/09/82 205.00 30 2 n'(21N,2397W NCNW 29 3 N 6' W S JUN-16-lY 1U:2Y ( , REPORT DATE 04/29/98 COLORADO WELLS, APPLICATIONS, AND PERMITS PAGE 1 COLORADO DIVISION OF WATER RESOURCES RMIT D.CO OWNER INFORMATION . • ACTIVITY STATUS 1ST USED ANNUAL ACRES GEOL WELL WELL WATER SEC LOCAT'N TOWN• P CD DATE CD DATE WV MI) DB USE DATE APROP IRA AIWA YIELD DEPTH LEVEL COORDINATES OTRS SC SHIP RANCE M 19874!47 1 62 ATI.T COMMUNICATIONS : CERTIFIED ENV CONSULT SALT LAKE CITY, UT 04115 MH 10/14/92 5 O M EN 0.50 10 6 NP. 30 1 N 67 W 5462 1 62 HESS LANCE - CEC 2757 5 300 WEST 8R SALT LAKE. UT 84115 NV 11/01/93 5 0 M INC 01.34N,2473E NWNE 30 3 N 67 W S '5463 1 62 HESS LANCE - CEC 2757 S 300 WEST 011 SALT LAKE, UT 84115 NP 11/01/93 9 0M UNC 0175N,2444E NWNE 30 3 N 67 W S 175464 1 62 HESS LANCE - CSC 2757 S 300 WEST OR SALT LAKE. UT 84115 NP 11/01/T3 5 0 M UNC 0094N.2498E NWNE 30 3 N 67 6 ' 5465 1 62 HESS LANCE - CRC 2757 S 300 WEST FIR SALT LAKE, UT 84115 NP 11/01/93 5 0 M UNC 0177N,2491E NWNE 30 3 N Cl W S • (c. { ff Colorado Streamflow Page 1 of 1 Qy�4. Y5" 11 w : Streamflow Colorado Streamflow Information Here's the streamflow information you requested: ST. VRAIN CREEK NEAR PLATTEVILLE, AT THE MOUTH 400 350 E300 jr\ arTh\ - d 250 rN 200 LL150 100 u 50 20-Jun 21-Jun 22-Jun 23-Jun 24-Jun 25-Jun 26-Jun 27-Jun 28-Jun 29-Jun 30-Jun Chart prepared on 6/30/98 10:07:28 AM - Days go from Midnight to Midnight Estimated Channel Capacity 1650 CFS WaterTalk (303) 831-7135 Division 1, Station 59 • [Another Stream] a of : "w a :nom • Natural Resources I Parks I Wildlife I Water I Geology I Oil & Gas I Nlinina, I Land I Overview http://www.dnr.state.co.us/scripts/gage/gage.idc 6/30/98 Colorado Current Streamflow Conditions - Wate... Page 1 of 13 W, . ' ...,•..1. . s1. . o j v o a . _ oigc, � H ci<o-� nt ��b' � t �f8-E��, � �� f,,I,,::::..::::. `5f��'�w3 } c4 : zr -,,,,. cr' sct�n��i�r�trhsng�n�a Nvrrr!'al` n ��`�:k :xa� �� • v Colorado Current Streamflow Conditions - Water Quality Updated TUESDAY JUN 30, 1998 13:08:11 Streamflow conditions are monitored by the U.S. Geological Survey with support from Federal, State, and local cooperators. PROVISIONAL DATA SUBJECT TO REVISION--Select a station number from the table to view graph(s) and other data for a station. C" Water Specific Dissolved pH Station Station Temp Rainfall Flow Stage Conductanc Oxygen Standard Number Name °C Inches ,ft'/s .ft µS/cm mg/L Units Date/Time %SOUTH PLATTE RIVER BASIN 06697 100 Tarryal Creek below Park Gulch near - 06/30 20 3.85 Como,Co O8:OO Spring Cr above mouth nr South Platte 06/30 06701970 Co. 0 _41 3.76 -- -- -- 12:50 06706800 'Buffalo Creek at mouth at Buffalo -- 0 31 3.75 06/30 Creek . 11:00 06709000 Plum Creek near Sedalia, Co. -- 0 . 29 1.85 -- -- -- 06/30 10:45 06709530 Plum Creek at Titan Rd nr Louviers, 3.4 6.27 06/30 C Co. . 11:30 South Platte River below Union Ave 06/30 06710247 at Englewood -- 87 10.91 09:30 06711565 South Platte River at Englewood, Co. 0 -- 112 1.73 389 1.6 7.8 06/30 10:30 06712000 Cherry Creek near Franktown, Co. -- 0 2.6 2.16 -- -- -- 06/30 09:45 067142 15 South Platte R at 64th Ave. Commerce -- -- 146 2,65 06/30 City, Co. 09:00 http://nwis-Colo.cr.usgs.gov/rt-cgi/gen_tbl_pg_ex 6/30/98 Colorado Current Streamflow Conditions- Wate... Page 2 of 13 Leavenworth Creek @ mouth nr 06/30 06714800 Georgetown, Co 0 48 4.33 0 12:30 06716500 Clear Creek near Lawson, Co. -- 0 488 4.52 -- -- __ 06/30 12:30 06719505 Clear Creek at Golden, Co. -- -- 676 6,51 ' -- -- __ 06/30 10:00 06720255 Uvalda Intercept bl 56th Av at Rocky 0 .35 -665.7 06/30 Mtn Ars, Co12:15 06720285 Havana Intercept bl 56th Av, at Rocky 0 1:3 10.63 -- _- __ 06/30 Mtn Ars, Co 07:45 06720460 First Cr bel Buckley Rd, at Rocky Mtn -- 0 0 .81 06/30 Arsenal, C 07:45 06720490 First Cr at Hwy 2, near Rocky Mtn 0 72 06/30 Arsenal, Co 07:00 06730200 Boulder Cr at North 75th St nr Boulder -- - 300 5.86 -- -- __ 06/30 - 12:00 06741510 Big Thompson River at Loveland, Co. -- -- 159 2.62 -- -- __ 06/30 11:00 0675 1150 North Fork Cache La Poudre River -- -- 100 2.98 06/30 below Halligan Reservoir near V Dal 10:45 06752260 Cache La Poudre River at Fort Collins, 14.9 409 3.51 48 8,3 06/30 Co. 12:15 Cache La Poudre R ab Boxelder C, nr 06/30 06752280 Timnath, -- 273 5.16 -- -- -- Co:. 10:45 06754000 South Platte River near Kersey, Co. -- -- 509 3.65 -- • . -- __ 06/30 10:30 393109104464500 Cherry. Creek near Parker, Co -- -- 1.9 2.66 .: -- -- __ 06/30 01:45 _ 393647105425317 South Clear Creek abv Naylor Creek 7.6 3.3 7.41 68 06/30 nr Georgetown - 02:00 394839104570300 Sand Creek at mouth nr Commerce -- -- 310 5.74 06/30 City,co 04:30 _ UPPER ARKANSAS RIVER BASIN http://nwis-colo.cr.usgs.gov/rt-cgi/gen_tbl_pg_ex 6/30/98 CGRS,Inc. APPENDIX B Methods and Procedures CGRS,Inc. • • METHODS AND PROCEDURES Soil Buenas Soil sampling will be conducted in accordance with ASTM:D 1586-87. Using this procedure, a 2- inch O.D. split-spoon sampler will be driven into the soil by a 140 pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sample an additional 12 inches, known as the penetration resistance (N value), will be recorded. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Soil Classification/Characterization As samples are obtained in the field, they will be visually inspected and classified in accordance with ASTM:D 1488-84. Representative portions of the samples will then be retained for further examination and for verification of the various strata, the N value, water level data, and pertinent information regarding the method of maintaining and advancing the boring will be provided. Charts illustrating the soil classification procedure, descriptive terminology and symbols used on the logs will be provided. Decontamination To avoid potential transport of contaminated materials to the project site, all drilling equipment and down-hole tools will be steam cleaned prior to mobilization. To prevent cross contamination between soil borings or monitoring wells all down-hole equipment will also be steam cleaned and rinsed with water between soil borings. Monitoring Well Construction • Monitoring wells will be installed utilizing the following general construction criteria: • • ,borehole diameter: minimum 6.25 inches • • well diameter: 2 inches • estimated depth: 15 feet below ground surface • casing material: schedule 40, flush thread PVC CGRS, Inc. • well screen: 2 inch I.D., 10 feet in length, #0.01 slot PVC • estimated screened interval: 5 feet above and 5 feet below the groundwater table • annular pack: 10-20 silica sand • protective casing: minimum 12 inch I.D., steel flush or above grade, locking cap • annular seal: cement grout and bentonite pellets. Groundwater Sampling All borings where groundwater is encountered will be sampled from the suspected cleanest to the most contaminated according to the protocols listed below. All pertinent information,will be recorded on a sampling information form. Field Protocol • Step 1 -Measure water level. • Step 2-A dedicated polyethylene bailer will be used to develop each boring. Three bore volumes will be evacuated from each boring prior to sampling. l ( Step 3 -Collect water samples. Water samples will be collected using a polyethylene bailer. A field blank will be collected during the sampling program to ensure quality control. Step 4 -Store samples in a cooler on ice for transport to the laboratory. Follow all documentation and chain-of-custody procedures. Step 5 -Clean equipment. Water level measurement equipment will be cleaned with ethanol • followed by a deionized water rinse. Upon completion of soil or groundwater sampling, a chain of custody log will be initiated. A copy of the chain of custody will be returned to the project manager. CGRS,Inc. METHODS AND PROCEDURES Soil Borings Soil sampling will be conducted in accordance with ASTM:D 1586-87. Using this procedure, a 2- inch O.D. split-spoon sampler will be driven into the• soil by a 140 pound weight falling 30 inches. After an initial set of 6 inches, the number of blows required to drive the sample an additional 12 inches, known as the penetration resistance (N value), will be recorded. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Soil Classification/Characterization As samples are obtained in the field, they will be visually inspected and classified in accordance with ASTM:D 1488-84. Representative portions of the samples will then be retained for further examination and for verification of the various strata, the N value, water level data, and pertinent information regarding the method of maintaining and advancing the boring will be provided. Charts illustrating the soil classification procedure, descriptive terminology and symbols used on the logs will be provided. Decontamination To avoid potential transport of contaminated materials to the project site, all drilling equipment... and down-hole tools will be steam cleaned prior to mobilization. To prevent cross contamination t. between soil borings or monitoring wells all down-hole equipment will also be steam cleaned and rinsed with water between soil borings. Monitoring Well Construction Monitoring wells will be installed utilizing the following general construction criteria: ( • borehole diameter: minimum 6.25 inches • well diameter: 2 inches • estimated depth: 15 feet below ground surface • casing material: schedule 40, flush thread PVC 1 CGRS,Inc. �✓ • well screen: 2 inch I.D., 10 feet in length, # 0.01 slot PVC • estimated screened interval: 5 feet above and 5 feet below the groundwater table • annular pack: 10-20 silica sand • protective casing: minimum 12 inch I.D., steel flush or above grade, locking cap • annular seal: cement grout and bentonite pellets. Groundwater Sampling All borings where groundwater is encountered will be sampled from the suspected cleanest to the most contaminated according to the protocols listed below. All pertinent information will 'be recorded on a sampling information form. Field Protocol Step 1 -Measure water level. Step 2-A.dedicated polyethylene bailer will be used to develop each boring. Three bore volumes will be evacuated from each boring prior to sampling. Step 3 -Collect water samples. Water samples will be collected using a polyethylene bailer. 'A field blank will be collected during the sampling program to ensure quality control. Step 4-Store samples in a cooler on ice for transport to the laboratory. Follow all documentation and chain-of-custody procedures. Step 5 -Clean equipment. Water level measurement equipment will be cleaned with ethanol followed by a deionized water rinse. Upon completion of soil or groundwater sampling, a chain of custody log will be initiated. A copy of the chain of custody will be returned to the project manager. ii CGRS,Inc. Chemical Analysis All analytical parameters are described in the Laboratory Quality Assurance Project Plan (QAPP) presented as Appendix C. Groundwater Elevation Measurements The following outlines our standard groundwater quality sampling methodology. Before purging any of the soil test borings or monitoring wells,water level measurements must be taken. Measuring Point • . Establish the measuring point,for the well. The measuring point is marked on the north side of the top of the temporary monitoring well riser. The top of the riser is normally a 2 inch casing inside a locked protective casing. The riser will be PVC pipe, galvanized pipe or stainless steel pipe. The measuring point should be described on the groundwater sample collection record. Access After unlocking or opening a monitoring well, the first task will be to obtain a water level measurement. Water level measurements will be made using an electronic water level indicator. Depth to water and total depth of the well will be measured for calculation of purge volume. • Measurement To obtain a water level measurement, lower a decontaminated electronic water level probe into the monitoring well. Care must be taken to assure that the electronic probe hangs freely in the monitoring well and is not adhering to the well casing. The electronic probe will be lowered into the well until the audible sound of the unit is detected and the light on the electronic sounder illuminates. At this time,the precise measurement should be determined by repeatedly raising and lowering the probe to obtain an exact measurement. The water level measurement is then entered on the groundwater sampling collection record sheet or groundwater level data sheet to the nearest 0.01 feet. Decontamination - The electronic probe shall be decontaminated immediately after use by wiping with isopropyl • alcohol-soaked paper towels. Always proceed in order from the suspected cleanest well or soil test boring to the suspected most contaminated one. iii - CGRS,Inc. Purge Volume Computation All soil test borings and temporary monitoring wells will be purged prior to sample collection. Depending upon the rate of recovery,three to five volumes of groundwater present in a well or bore • hole shall be withdrawn prior to sample collection. If a well or bore hole bails dry,the well or bore hole should be allowed to recharge and a sample taken as soon as there is sufficient volume for the intended analysis. The volume of water present in each well or bore hole shall be computed using the two measurable variables, length of water column in soil boring or monitoring well and • diameter. • Purging and Sample Collection Procedures Bailin • Obtain a laboratory decontaminated disposable bailer and a spool of nylon rope or equivalent bailer cord. Tie a bowline knot or equivalent through the bailer loop. Test the knot for adequacy'by creating tension between the line and the bailer. Tie again if needed. New rope will be used for every sample or purge. New clean latex gloves will be used when touching the rope or bailer. .• Spread a clean plastic sheet near the base of the well. The plastic sheet should be of sufficient size to prevent bailer or bailer rope from contacting the ground surface. • • Place the bailer inside the well to verify that an adequate annulus is present between the bailer and the well casing to allow free movement of the bailer. • Lower the bailer carefully into the well casing to remove the sample from the top of the water column,taking care not to agitate the water in the well. • Pour the bailed groundwater into a bucket. Once the bucket is full,transfer the water to a barrel and contain on-site. iv CGRS, Inc. K./ • Raise the bailer by grasping a section of cord, using each hand alternately. This bailer lift method will assure that the bailer cord will not come into contact with the ground or other potentially contaminated surfaces. Sampling • Instructions for obtaining samples for parameters are reviewed with the laboratory' coordinator to insure that proper preservation and filtering requirements are met. • Appropriate sample containers will be obtained from the contract laboratory.After samples are E collected, they will be put on ice in coolers (4°C). Care will be taken to prevent breakage during transportation or shipment. • Samples collected by bailing will be poured directly into sample containers from bailers. The sample should be poured slowly to niinimize air entrapment into the sample bottle. During i C collection,bailers will not be allowed to contact the sample containers. • Upon completion of sampling a chain-of-custody log will be initiated. Chain-of-custody records will include the following information: project name and number, shipped by, shipped sampling point, location, field ID number, date, time, sample type, number of containers, • analysis required and sampler's signature. The samples and chain-of-custody will be delivered to the laboratory. Upon arrival at the laboratory the samples will be checked in by the appropriate laboratory personnel. Laboratory identification numbers will be noted on the.chain- of-custody record. Upon completion of the laboratory analysis, the completed chain-of-custody record will be returned to the project manager. Field Cleaning Procedures For all equipment to be reused in the field,the following cleaning procedures must be followed: • Disassemble the equipment to the extent practical. • Wash the equipment with distilled water and laboratory-grade detergent. • Rinse with distilled water until all detergent is removed. • Rinse the equipment with isopropyl or methanol,making sure all surfaces, inside and out,are rinsed. • Triple rinse the equipment with distilled water. v CGRS,Inc. \/ • Laboratory Selection The project manager should consider the following factors when selecting a laboratory: • Capabilities(facilities,personnel, instrumentation), including: • Participation in interlaboratory studies(e.g., EPA or other Federal or State agency sponsored analytical programs); • Certifications(e.g.,Federal or State); • References(e.g.other clients); and • Experience(UST,RCRA and other environmentally related projects). • Service; • Turnaround time; and • Technical input(e.g.,recommendations on analytical procedures). The project manager is encouraged to gather pertinent laboratory-selection information prior to extensively defining analytical requirements under the project. A request may be made to a laboratory to provide a qualifications package that should address the points listed above. Once the project manager has reviewed the various laboratory qualifications, further specific discussions with the laboratory or laboratories should take place. In addition, more than one laboratory should be considered. For large-scale investigations, selection of one laboratory as a primary candidate and one or two laboratories as fall-back candidates should be considered. The quality of the laboratory service provided is dependent on various factors. The project manager should be able to control-the quality of the information (e.g., samples) provided to the laboratory. It is extremely important that the project manager communicate to the laboratory all the requirements relevant to the project. This includes the number of samples and their matrices, sampling schedule, parameters and constituents of interest, required analytical methodologies, detection limits, holding times, deliverables, level of QA/QC,and required turnaround of analytical results. Field and Laboratory Quality Control General Quality control checks are performed to ensure that the data collected is representative and valid data. Quality control checks are the mechanisms whereby the components of QA objectives ore monitored. Examples of items to be considered are as follows: vi. CG ,me. 2 1. Field Activities: • Use of standardized checklists and field notebooks; • Verification of checklist information by an independent person; • Strict adherence to chain-of-custody procedures; • Calibration of field devices; • Collection of replicate samples;and • Submission of field blanks,where appropriate. 2. Analytical Activities: i' • Method blanks; • Laboratory control samples: • Calibration check samples; • replicate samples; • Matrix-spiked samples; • "Blind" quality control samplers; • .Control charts; • Surrogate samples; • Zero and span gases;and • Reagent quality control checks. Blind Duplicates Blind duplicate samples will be collected for 10% of the samples collected or once per site, whichever is greater. These blind duplicate samples will be forwarded to the laboratory as a check of laboratory reproducibility. Equipment(Rinseate)Blank The equipment (rinseate) blank is designed to identify potential cross-contamination in the field between sample sources due to deficient field cleaning procedures. This klank also addresses field preservation procedures, environmental site interference, integrity of the source blank water for field cleaning and those concerns singularly addressed by the travel blank. Equipment blanks are taken once per site, when equipment is cleaned in the field. This provides a quality control check on field cleaning procedures. vii r , t CGRS,Inc. Field Blank Field blanks are used to evaluate the sample container filling procedure, the effects of environmental contaminants.at the site, purity of preservatives or additives and those concerns uniquely addressed by the travel blank. Field blanks are taken downwind of the most contaminated area of the site by filling laboratory cleaned and prepared sample containers (appropriate for the parameters group) with deionized or • organic-free water supplied by the laboratory. The blank sample container is then sealed,grouped, transported and stored with the real samples collected for the same parameters group. Travel(Trip)Blanks The travel blank is designed to address interferences derived from improper sample container cleaning preparation, contaminated source blank water, sample cross-contamination during storage/transport and extraneous environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Travel blanks are composed in the appropriate sample container using source blank water. Preservatives or additives are added if required for the parameters group. Travel blanks are then sealed and stored in the ice chest where real samples will be stored and transported. Travel blanks are to originate at the laboratory providing the blank water for the equipment and field blanks. • Protocol for Analyzing Blank Samples If used, the equipment blank will be analyzed first. If contamination is found to be present, the field blank will then be analyzed. If the equipment blank is not used, the first blank analyzed will be the field blank. If any blank is found to be contaminant-free, the sequence of analyses will be terminated. viii • CGRS,Inc. APPENDIX C • Quality Assurance Project Plan QUALITY ASSURANCE PROJECT PLAN FOR THE VARRA COAL ASH BURIAL PROJECT WELD COUNTY, COLORADO 1.0 Introduction ' This Quality Assurance Project Plan (QAPP) briefly describes the field data collection activities and laboratory analyses being conducted as part of the Varra Coal Ash Burial Project in Weld County, Colorado. The work described in this QAPP is being conducted to address possible concerns related to coal ash burial in saturated mediums. Described in the sections below are the project objectives, scope of work, sample handling and Chain-of-Custody procedures, data quality assurance,and laboratory deliverables. • 2.0 Objectives The data being collected are intended to support the following objectives: • Identify potential adverse environmental impacts to groundwater resources and surface waters from coal ash burial; • Determine variations in water quality from coal ash burial (if any); • Characterize hydrogeologic and surface water conditions in sufficient detail to describe hydrostratigraphy, direction and velocity of groundwater flow, and the relationship between groundwater and surface water; • Develop and implement monitoring programs for the various media; and, • Employ industry standard field and laboratory methods suitable to meet CLP or equivalent(such as EPA QC Level III) Data Quality Objectives. 3.0 Scope of Work • The scope of work for this project involves, development of Health and Safety and site-specific Work Plans, field investigations, laboratory analysis of water samples, analysis of hydraulic and hydrogeologic properties,and the preparation of a report detailing the results of the investigation. Field investigative techniques include soil and groundwater sampling using' direct push and hollow stem auger techniques. ' • • 3.1 Sample Identification • • A sample identification scheme will be used that maintains consistency for the names of boreholes and monitoring wells, as well labels affixed to each sample container, and entered on to the Chain-of-Custody(COC)forms. The following scheme will be followed: 1. Samples from soil borings that are not converted to monitoring wells are named SB; 2. Samples from soils collected during drilling of monitoring wells are named MW; and • 3. Depth of soil sampled indicated by @(de interval). For example a soil sample might be identified as MW-4 @ 10-11.5. Groundwater, surface water, and sediment samples will be named with no depth interval (i.e. MW-4, SW-4, SED-4, respectively). 3.2 Analytical Suites Analytical procedures for water and soil samples will conform to the USEPA guidelines described in SW 846 (Test Methods for Evaluating Solid Waste/Physical/Chemical Methods, 3`a ed.). Table 1 presents the analyses that are anticipated on the project. 3.3 Sample Custody Strict chain of custody(COC)protocol will be maintained throughout the life of the field program and will be controlled through the use of a COC Record supplied by the laboratory. The following procedures will be used to document, establish, and maintain custody of field samples: • Sample labels will be completed for each sample using waterproof ink; making sure that the labels are legible and affixed firmly on the sample container; • All sample-related information will be recorded in the project log book; • The field sampling technician will retain custody of the samples until they are transferred or properly dispatched to a laboratory; and, • As fieldwork is conducted the on-site CGRS technical lead will determine whether these procedures are being followed, if corrections need to be made, and if additional samples are required. 3.3.1 Chain of Custody Records A Chain-of-Custody Record will be maintained in the field for all samples to be shipped to the laboratory for analysis. The three lines of information to be entered into the COG box titled "Project or P.O.#" are: Line 1. Client Name, i.e. "Varra Companies" Line 2. Site Name, i.e."Pit 112" Line 3. Site Number, i.e. "2755" The i▪ t rte lines of information will be provided on the laboratory paper (hard copy) reports as a page header, and on the electronic deliverables as three individual fields in each analytical record. The"Sample'Identification" entries to the COC will be completed as described in Section 3.1 of this QAPP. Varra Companies • Quality Assurance Project Plan Page 1 3.3.2 Transfer of Custody and Shipment Due to the evidentiary nature of field sample collection, the possession of samples must be traceable from the time the samples are collected until they are introduced as evidence in legal proceedings. A sample is defined as being under a person's custody if any of the following conditions exist: (1) it is in their possession, (2) it is in their view after being in their possession, (3) it is in a secure locked location after having been in their possession, and (4) it is in a designated secure area. The following procedures will be used in transferring and shipping samples: • Field personnel will maintain detailed notes in field logbooks, documenting the collection and identification of the required samples. The logbooks will be checked against the COC records for completeness and traceability. • A COC record will accompany all sample shipments. When transferring samples,the individuals relinquishing and receiving will sign, date, and note time on the record. The COC documents transfer of sample custody from the field sampling technician to another person or to the laboratory. • • Each cooler is to contain samples from one site. No mixing of samples from multiple sites will be allowed in a given cooler. • Samples will be properly packaged for shipment and shipped to the laboratory for analysis with a separate signed COC record enclosed in each sample box or cooler. Two copies of this record will accompany the samples to the laboratory. The laboratory maintains one file copy, and the completed original will be returned to the project manager as part of the final analytical report. This record will be used to document sample custody transfer from the field sampling technician to the laboratory or to the CGRS offices. Just prior to shipment to the laboratory, coolers will be secured with custody seals. • Whenever samples are split with a facility operator or government agency, a separate COC record will be prepared for those samples and so marked to indicate with whom the samples are being split. , • The COC record showing identification of the contents will accompany all packages. The original record will accompany the shipment and the field team leader will retain a copy. • A bill of lading will be used for all samples sent by common carrier. Receipt of bills of lading will be retained as part of the COC permanent documentation. 3.3.3 Laboratory Custody Procedures The laboratory, at a minimum, will check all incoming samples for integrity and note any observations of the original COC record. Each sample will be logged into the laboratory system by assigning it a unique laboratory identification number. This number and the field sample identification number will be recorded 'on the laboratory report. Samples will be stored and analyzed according to the methods described in Section 3.1. The original COC record will be returned to the CGRS project manager for filing. The laboratory sample custodian will use the ( following procedures to maintain the COC records once the samples arrive at the laboratory: II Varra Companies Quality Assurance Project Plan Page 2 • The samples received by the laboratory will be cross-checked to verify that the information on the sample labels matches that on the COC record included with the sample shipment; • The "Received by Laboratory" box on the COC record will be signed on receipt. Any discrepancies between the COC record and the shipment contents will be resolved as soon as possible through communication with CGRS personnel; • The status of the sample receipt and analysis will be tracked within the analytical - laboratory by a laboratory information management. system (LIMS) or equivalent computerized management system. For data that are input by an analyst and processed using a computer, a copy of the input data will be kept and identified with the project number and any other needed information. The samples analyzed will be clearly noted and the input data signed and dated by the analyst. ' 3.4 Laboratory Deliverables The laboratory is required to submit EPA QC Level III data packages (CLP-equivalent)to CGRS, Inc. within 21 days from the date of acceptance on the Sample Receipt Form. Details of the deliverables are presented below. • Sample Receipt-The laboratory will complete and submit a "Sample Receipt" form for all sample shipments received. The purpose of the form is to note problems with sample packaging, COCs, and sample preservation. Problems noted on the form will be communicated to CGRS, Inc..as soon as possible. • Reporting of Analytical Results — For each analytical method performed, the laboratory will report all analytes as detected concentrations or as less than the specific limits or quantification. All samples with out-of-control spike recoveries being attributed to matrix interferences should be designated as such. All soil/sediment and solid waste samples should be reported on a dry-weight basis with percent moisture also reported. Also, report dates of extraction/preparation, dates of analysis, and dilution factors when applicable. An electronic deliverable(LIMS) will be provided that conforms to the CGRS project data requirements. An example•of the data deliverable is presented in Table 2. • Internal Quality Control Reporting—Internal QC samples should be analyzed at rates specified in the method (SW-846). At a minimum, QC deliverables will consist of laboratory blank results, surrogate spike percent recoveries, results of MS/MSD analyses, laboratory control sample data, laboratory duplicate results, and if requested, calibration and tuning data. The internal.QC data will not be delivered unless requested by Varra or CGRS personnel. 3.5 Field and Laboratory QA/QC Procedures • Quality control checks are performed to ensure that the data collected are representative and valid. Quality control checks are the mechanisms whereby the data quality objectives are monitored. The quality control samples to be collected on the project are described below. • Duplicate Samples — As a check for laboratory reproducibility, blind duplicate samples(unknown by the laboratory to be duplicates) will be collected and submitted Varra Companies Quality Assurance Project Plan Page 3 to the laboratory at a rate of one every 10 water samples collected, or once per site, whichever is greater. No duplicate soil samples will be collected. • Field Blank Samples—To evaluate sample bottle filling procedures and the effects of environmental contaminants at the site, one VOA water sample per site'is collected in laboratory-cleaned and prepared containers of deionized or organic-free water supplied by the laboratory. Field blanks are collected downwind of the most contaminated area within a site. The sample is sealed, labeled and shipped with the real samples collected for the same parameter group. • Travel (Trip) Blanks—Trip blanks are intended to address interferences derived from improper sample container cleaning, preparation, contaminated source blank water, sample cross-contamination during storage and shipment, and: environmental conditions affecting the sampling event to and from the site, including delivery to the laboratory. Trip blanks will originate at the laboratory and will consist of VOA vials filled with source blank water, and will be sealed and stored in the cooler where real samples will be stored and shipped. - • Equipment (Rinseate) Blanks—Rinseate blanks, intended to provide quality control on field cleaning procedures,will be collected once per site. • • • Varna Companies • Quality Assurance Project Plan Page 4 I Table 1 Summary of Parameters, Sample Containers, • Holding Times, and Analytical Methods - Parameter Matrix No aadType of Aaalyttca Contahters IioCduglune(1} hodO Mef Free Cyanide Water ' 1-200 ml P,G 14 days,4C,NaOH to ph>12 EPA 300.0 • •Chloride • Water • 1-200 ml,P,G . • • 28 days no preservative required EPA 300.0 • Fluoride Water 1-500 ml,P . 28 days no preservative required. EPA 300.0 • • Sulfate Water 1-200 ml,P 28 days cool to 4C EPA 300.0 • • Nitrate • Water 1-100 ml,P,G • - 48 hours cool to 4C ._ EPA 300.0 Mercury Water 1-500 ml P,G 28 days,HNO3 to pH< 245.1/7170 - Total Metals(RCRA) Water 125-500 ml nalgene(Red dot) 6 months except Mercury at 28 days. For 6010/7000 water,preserved with HNO3,not filtered. Dissolved Metals(RCRA) Water 125-500 ml nalgene 6 months except Mercury at 28 days. Filtered 6010%7000 (Green dot) and preserved in Lab. Anions/General Chemistry 25Water dot) ≥ml nalgene(White 28 days 200 Series Notes: (1)All collected samples to be kept cool(4 degrees C) (2)USEPA Method,SW-846(Revised), 1986 Table 2 Content of Digital Analytical Deliverables (LIMS Download) Origiu:of Data. Laboratory:Name of Data Example of Delivered Generated by CGRS Generated in Lab and Entered on by Quanterra Field Digital Data COC COMPANY NA Varra Energy X SITE_NAME Coal Ash Project X SITE_NO 2755aa X SAMPLE_ID1 MW-1 X SAMPLE_DAT 08/27/97 X LAB ID L15316-01 X MATRIX Water X X METHOD M6010 ICP X DATE_ANALY 09/04/97 X ANALYTE Silver,total(3051) X TEXT_RESUL (blank if ND) X NUMBER RES (blank if ND) X QUALIFIER U X DILUTION 106 X MDL 0.50000 X PQL 3.00000 X UNITS mg/Kg X DATE_RECEI 09/03/97 X DATE_EXTRA 09/04/97 X CAS_ 007440-22-4 X BATCH_ID WG47359 X U VARRA COMPANIES - COAL ASH PROJECT ANALYTICAL SUITES FIELD PILOT TESTS Analyte Standard Units Aluminum 5.000 mg/L Arsenic 0.050 mg/L Barium 2.000 mg/L Boron 0.750 mg/L Cadmium 0.005 mg/L Chromium 0.100 .mg/L Colbalt 0.050 mg/L Iron 0.300 mg/L Lead 0.050 mg/L Manganese 0.050 mg/L Mercury 0.002 mg/L Nickel 0.100 mg/L Selenium 0.050 mg/L Chloride 250.000 mg/L Free Cyanide 0.200 mg/L pH 6.5-8.5 s.u. Sulfate 250.000 mg/L GROUNCG 1 \ RESOURCE RF S RViCES ER "Jf 5E RVICES • April 9, 1999 Mr. Roger Doak Colorado Department of Public Health and Environment (CDPHE) Hazardous Materials and Waste Management Division 4300 Cherry Creek Drive South Denver, CO 80246-1530 County Planning Dept, Weld_.. RE: Varra Coal Ash Project 2 ��9 Weld County, Colorado APR CGRS No. 1-135-2755 I C E R/ ED Dear Mr. Doak: Enclosed please fmd the application checklist to aid you in your review of our coal ash proposal. Information requested on your checklist, which may not be adequately addressed in our work plan or USR application,.is addressed below. ➢ In regard to operational data the normal business hours for Varra quarry.operations is 7 AM to 5 PM, Monday through Friday. ➢ In regard to qualifications of the person responsible for correcting non-compliance, we offer CGRS, Inc.'s Statement-of-Qualifications, which details our company's experience. 'The resumes attached within provide qualifications of individuals involved in this project. . > We have provided precipitation data as Attachment A to this letter. • ➢ Groundwater travel calculations and hydrologic properties of the surficial aquifer will be made prior to deposition of any materials as stated in our Work Plan. We anticipate that the hydraulic conductivity will be about of 100 feet per day. ➢ Available background water quality data from unconsolidated alluvial aquifers is provided in Attachment A. The spatial distribution of these data is over the Boulder — Fort Collins — Greeley area. > A financial assurance plan will 'be provided by Varra Companies upon approval of the Certificate of Designation. P.O. Box 1489 Fort Collins, CO 80522 Phone: (970) 493-7780 Fax: (970)493.7986 U U Mr.Roger Doak Varra Coal Ash Project April 9, 1999 - Page 2 - If you have any questions regarding this letter or require further information, please contact me at (800) 288-2657. Sincerely, CGRS, INC. • kjoiva.../ .b . Adams, P.G. Principal/Hydrogeologist Attachments cc: Mr. Chris Varra—Yana Companies Mr. Trevor Jiricek—Weld County Health Department Mr. Ben Patton—Weld County Planning 04/06/99 16:07 FAX 3037597c-c,,- CDP fQ 002 ` l SOLID WASTE DISPOSAL SITES AND FACILITIES APPLICATION CHECKLIST LANDFILL (THIS DOCUMENT IS NOT AN APPLICATION FORK) (This document is meant to be used as a checklist, application format ' and annotated table of contents for applications) FACILITY NAME Varra Companies, Inc. COUNTY Weld Unincorporated X Incorporated City Longmont GENERAL DATA (3.3 .1) Mailing Address Name : Varra Companies Attention : Chris Varra Address : 12910 Weld County Rd- 11 tate rn Zip Rn5na City : Longmont S - Phone : (303 ) -666 -8269 Location : Twn 3 d Rng (28bO Section 3/ Area Total site 35 acres ac. Disposal area 0.25 ac.. Type of Facility Gravel Quarry Discussion of facility service area, including transportation corridors and surrounding access. Page in application LOCATION RESTRICTIONS AND SITE STANDARDS (3 .1) • Page '1 in application OPERATIONAL DATA '(3 .3 .2) OPERATOR Name Varra Companies, Tnr Attention: Chris Varra Address, . : 12910 Weld County Rd. 14 City . Longmont State ro Zip Rn04 Phone : (303 ) 666 - 8269 • Qualifications of person responsible for correcting • non-compliance. Page # in application sat Covet ii#e r . • Hours of operation (3.3_2 . (B) ) • Page # in application 'Describe Gravel quarry,operations 7am-5pm m-f JANUARY 1994 Page 1 of 6 04/06/99 16:08 FAX 303758` CDP -- U003 • Description of Waste Stream and volumes (3 .3 .2 . (C) ) Page / in application M/A •Describe Not applicable - nepnsits on es ' ^ated 400 tons within a trench measuring 100 ft. in lenoth. 10 It. in width and • 10 ft. in depth. Commercial Yes/No community • - Yes/No • Industrial Yes/No Asbestos Yes/No Inert Material Yes/No Construction Demolition • Yes/No Special Yes/No Sludge Yes/No Other • Expected life of facility ( 1 years • Personnel Descriptions (3 .3 .2. (D) ) Page / in applicai7icn1 pq 11 in workplan Equipment (3.3.2. (E) ) Page # in application APPendi4`B_ in wnrlrplan Size and types of disposal cells (3.3.2. (F) ) Page f in application_ •Describe Page 10 in 1Tork' Plan A single trench measuring 100 ft in length 10 ft. in width and 10 ft in depth will be used fnr the Anal ash placement. Composition and frequency of cover material (3.3 .2. (G) ) Page # in application. page 10 in work plan • Fencing (3 .3.2. (H) ) Page # in application N/A Provisions to minimize nuisance conditions (3.3.2. (I) ) Page application Page 3 USE Section 3, Part E Fire Protection (3.3.2. (7) ) Page 1 in application page ?cif TLSR, Sertinn K Windblown debris (3 .3.2_ (K) ) Page 1 in application N/A Conceptual plans for impacts to surface or ground waters (3 .3 .2 . (L).) Page # in application Page 11 in Work Plan Section 4.5 Sources of water for on site use (3 . 3_2 . (M) ) Page i in application N A Hazardous waste exclusion plan (2.1.2 . ) Page t in application _11.22.L___ Surface water control systems (2.1. 6) Page 1 in application N/A JANUARY 1994 Page 2 of 6 04/06/99 16:08 FAX 30375PG's4 CDP I4J004 i II GEOLOGICAL DATA (3.2.1) • Unconsolidated materials (3.2.1. (A) ) Page # in application page 1 in work plan Name(s) Allinrinm- Ho1nrane in age • . . Type(s) ganvy to Pravelly alluvium Thickness(es) 7n-sn, Consolidated materials (3 .2.1. (B) ) Page # in application N/A • Name(s) Type(s) Thickness(es) • Regional and local geological structure (3.2.1. (C) ) Page # in application N/A Regional strike Dip Local strike Dip Geological structures Geological hazards (3.2.1. (D) Page # in application N/A Precipitation See Attachment A Floodplain (3..1.7) Page / in application page 4 of USR Aquifer recharge area (2. 1.5) Page in application N/A Groundwater travel calculation (3.2.5 (11)) Page # in applicationpg.9 of Airport restriction (3.3.1) Page # in application N/A work plan Notification of FAA if airport within 5 miles (3 .3 .1) Page # in - . application N/A HYDROLOGIC DATA (3.2.2) Surface water features within 2 miles (3 .2 .2 (A) ) Page # in application see attachment *Summarize The Saint Vrain Creek lies approximately 270 feet immediately south of the proposed study area (see Figure 3 in work plan) Depth to and thickness of perched zones and uppermost aquifer • (3 .2 .2. (B) ) Page # in application- - •Summarize Allin 'al deposits a a imated to vat between 2O anti Sn feet in thirkness and overlies the Taramie-Fnx Hills format nn JANUARY 1994 Page 3 of 6 04/06/99 16:08 FAX 303750r'r` CD? IJ 005 Groundwater wells within one mile of site boundary (3 .2. 2. (0) ) Page #. in application Appendix A work plan, pg. 2 Work plan Hydrologic properties of perched zones and uppermost aquifer (3 .2.2. (D) ) Page 0 in application 4Ec Ccv [srrE2 Perched Zone Upper Aquifer - Name Unconfined/confined unconfined Hydraulic conductivity (cm./sec) estimated at n nsn Hydraulic gradient (ft./ft.) to hp determined Porosity, (Percent %) to by determined Flow direction estimated N 40 degrees W Potentiometric surface (ft,bgs) 4- 10' Transmissivity (cm2/sec) to he determined • Storativity, S fn he petimatnd Site location in relation to the base floodplain of nearby drainages (3 .2.2. (E) ) Page # in application' page 4 of USR Potential for impacts to existing surface and ground water quality (3 .2.2. (F)) Page .# in application purpose of the proposal -See tables of leaching studies Existing quality of ground water beneath the. proposed facility (3 .2.2. (G) ) Page -# in application Appendix A of wnrk Plan and Attachment to this checklist ENGINEERING DATA (3 .2.3. ) Daily and intermediate cover material; type, quantity, and location (3 .2 .3. (1) ) Page # in application < 1 feet cnil Liner and final covermaterial; type, quantity, and location (3 .2.3 . (2) Page # in application N/A Maps and plans drawn to a conveniently readable scale showing the following information (3 .2 .3 . (3) ) : (a) Location and depth of cut for liners Page # in application Fig R . • (b) Daily, intermediate, and final cover Page # in application Fig 1 (c) Location and depths of proposed fill and processing Page / in application page 10 Work plan (d) Location, dimensions, and grades of all surface water diversion structures Page 1 in application N/A (e) Locations and dimensions of all surface water containment structures Page / in -application Fig. 3 Aerial photo in USR application JANUARY 1994 Page 4 of 6 04/06/99 16:09 FAX 3037595355 __. GDP uuo (f) Spatial distribution of engineering, geologic, and hydrologic data; relation to proposed facility Page # in application Ste rev c.Fnrie (g) Location of all proposed facility structures and access roads Page # in application nage 2 TJSR (h) Location of all proposed monitoring points for surface water, ground water, explosive gases Page # in application F; 3 Wnrk plan (i) Final contours and grades of the fill surface' after closure Page # in application Page # in application •NA (j) Location of fencing Page # in application a'A (k) Location of each discrete phase of development Page # in application NSA (1) Design details of the final cap, liner, and leachate collection system Page # "in application 7O Construction details for all proposed monitoring points for (3 .2. 4) : •Surface water quality Page # in application AppA*ui. B page 1 Work Plan •Ground water quality Page # in application Appendix A •Explosive gases Page # in application N/A Liner design components (3 .2 .5.A) (1) Barrier layer hydraulic conductivity N/A cm/sec Page # in application (2) Barrier layer thickness N/A feet Page / in application N/A (3) Barrier layer porosity % (If available, for HELP model) Page # in application (4) Barrier layer slope N/A feet/foot• Page # in application (5) Maximum design hydraulic head on barrier layer yi; inches Page # in application (6) Distance to relevant point of compliance (<=150 -m) feet Page # in application to he established (7) 'Distance and characteristics, including quality, of the uppermost aquifer or monitored unit Page # in application SEE gyncHms.,r ,v (8) Climatic factors Page # in application N/A (9) Estimated volume, physical characteristics, and chemical characteristics of the leachate Page # in application Tables 2-6 work (10) Chemical compatibility of the barrier layer to estimated leachate plar chemical characteristics Page # in application N/, (11) The distance ground water beneath the site would- flow during the facility's operating life and post-closure care period 0 feet (12) The distance to domestic wells or springs shown to tap the uppermost aquifer downgradient of the site feet Barrier layer type (Section 3 .2.5 . (C) ) Page # in application • Summarize N/A JANUARY 1994 Page 5 of 6 04/06/99 16:u9 FAA 3UJ7b"ssgg cur - 1g1007 • • • Leachate collection and removal systems (3 .2.5. (O) ) Page # in application N/A • Summarize • Surface water control systems (3.2. 6) Page # in application N/A -Provision for as-built construction documentation (3 .2.7) Page # in application N/A Quality assurance and quality control plan (3 .3 .3) Page # in application Section 4.5 Work Plan Cover material requirements (3.3.4) Page # in application N/A Soil balance calculations (3.3.5) Page # in application N/A Water availability (3 .3. 6) Page # in application N/A Leachate and landfill gas condensate management (3 . 3 .7) Page # in application N/A Recordkeeping /2-4, 3..4) Page .# in application N/A Waste volumes ( ) Water monitoring ( ) Gas monitoring . _ . . . . . . .. _ . . . . _ . . ( ) Approved operational plan . . .. . . . . . ( ) Construction as-built _ .. . . ( ) . Operation variances . . ( ) Training _program . . . . . . . .. . . . . _ . ( , ) Special waste program ( ) Ground water monitoring plan (2.2) Page # in application Appendix B,C page 10 of workplai Explosive gas monitoring (2.3) Page ,/ in application N/A closure plan (3 .5, 2.5) Page # in application . to be determined Post—closure care and maintenance (3. 6., 2. 6) Page # in application N/A F-inancial assurance plan (1. 8) Page 1 in application See attached letter • JANAURY 1994 Page 6 of 6 • ATTACIEVIENT A PRECIPITAION AND WATER QUALITY DATA s hap://ccc.atmos.colostate.edu/cgi-birilinlydb.pl Monthly Climatic Data for GREELEY UNC for years 1995 - 1997 Station - 53553 Latitude - 4025 Longitude - 10442 Elevation - 4650 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Monthly mean temperature. . • Ave 27.6 34.0 41.4 46 .5 57 .0 67.7 73 .5 72 .9 63 .5 51.0 38 .6 32 .4 50.5 Max • M30.3 35.9 44.3 50.4 59 .7 69 .7 74.5 75.4 66.0 51.7 42.1 33 .0 50.6 Year 1995 1995 1997 1996 1997 1996 1997 1995 1997 1996 1995 1995 1996 Min 25 .3 32 .7 38.4 44.5 51.6 64.0 72.9 71.2 62 .0 50.2 36.4 31.2 50.3 Year 1997 1997 1996 1997+ 1995 1995 1995 1997 1996 1995 1997 1997 1995 Count 3 3 . 3 3 3 3 3 3 ' 3 3 3 3 3 • Monthly mean maximum temperature. Ave 39 .9 46.7 - 56 .2 ' 59 .5 69 .3 81.8 88.6 88.0 77 .5 " 65.7 ' 51.1 44.1 64.0 I. Max 42 .5 49 .2 61.2 64.8 74:1 84'.7 90.2 91.6 80.2 66.2 55.8 46.3 64.7 Year 1995 1995 1997 1996 1997 1996 1997 1995 1997 1996 1995 1996 1996 Min 36.2 42.8 52.4 56.5 60.9 77.1 87.0 84:6 76.1 65.2 48.1 41.0 63 .7 Year 1997 1997 1996 1995 1995 1995 1996 ' 1997 1995 1995 1997 1997 1995 Count 3 3 3 3 3 3 3 3 3 3 3 3 3 Monthly mean minimum temperature. Ave 15.3 21.3 26.6 33 .5 44.6 53 .6 58.4 57 .8 49 :5 36.3 26 .1 20.6 37.0 Max 18.2 22 .6 28.0 36.0 46.4 55.3 59 .3 59 .2 51.7 37.2 28.4 21.4 37 .3 Year 1995 1997 1995 1996 1996 1997 1996 1995 1997 1996 1995 1997 1997 Min 13 .3 18.9 24.4 31.9 42.2 50.9 57 .1 56.4 47 .7 35.3 24.8 19.5 36.6 Year 1996 1996 1996 • 1997 1995 1995 1995 1996 1996 1995 1997 1996 1996 Count 3 3 3 3 3 3 3 3 3 3 3 3 3 Total monthly precipitation. t Ave 0.55 0.48 0 .61 1x67 2 .73 2 .66 1.80 1.28 1.81 1.00 0.44 0.14 15.18 L = Max 0.82 0.88 0.94 2.85 4.13 3 .99 2.54 2.97, 2.86 2 .07 0.46 0 .32 17.05, Year 1997 1995 1996 1995 1995 1995. 1996 1997 1995 1997 1995 1997 1995 Min ' 0.06 0 .08 0.44 0.67 1.61 1.65 0.57 0.23 0.83 0.44 0.41 0.00 12.35 Year 1995 1996 1995 1996 1997 1996 1995 1995 1997 1996 1996 1996 x.996 Count S 3 3 3 3 - 3 3 3 3 3 3 3 3 3 • Total monthly snowfall. _ Ave 8.0 5 .8 5.5 6.9 0.0 0.0 0.0 0.0 1.7 9 :7 ' 4. 8 1.7 44.1 Max 13 .0 9 .7 5.6 10.2 '0.0 0.0 0.0 0.0 4.0 20.2 5. 8 3 .5 59 .2 Year ' 1997 ' 1995 1995 1995 1997+ 1997+ 1997+ 1997+ 1995 1997 1995 1997 1997 Min 0.5 - 0.7 5.5 4.0 ,0.0 0:0 0.0 _ 0.0 0.0 3 .0 3 .5 0.0 29 .9 Year 1995 1996 1997+ 1996 1997+ 1997+ 1997+ 1997+ 1997 1996 1997 1996 1996 • t' 4/8/99 10;47 AM ' K___,) • Water Quality of Unconsolidated Alluvial Deposits , Boulder -Fort Collins - Greeley Area Varra Coal Ash Burial Project Weld County, Colorado CGRS Project No. 1-135-2755 ,k ' `�s * , ,, r C1 ' t iN u -Wfi . IaTumbe> of Dumber of Samples where;-_ S ,standard was exceeded . Co tuent?�., Uruts S#andard Range. . __ ampler - = ry 161 Dissolved Solids mg/L 500 53-6,570 178 Dissolved Arsenic ug/L 50 <1-5 89 6 2 Dissolved Chloride mg/L 250 .4-1,100 295 12 Dissolved Fluoride mg/L 1.8 .2-5 145 ug/L 300 <1-16,000 164 15 Dissolved Iron g 14 Dissolved Manganese ug/L 50 <1-920 92 Dissolved Magnesium mg/L 125 1.9-510 170 30 Dissolved Nitrite (plus 289 43 nitrate as nitrogen) mg/L 10 .00-73 94 15 Dissolved Selenium ug/L 10 <1-100 136 Dissolved Sulfate mg/L 250 5.9-3,640 180 Hardness, as calcium N/A carbonate mg/L None 31-3,540 177 Hillier and Schnider, 1972. Well Yields cud Chemical Quality of Water,Boulder-Fort Collins-Greeley Area,Colorado. US Geological Survey Miscellaneous Series, Map I 855-7. SOLID WASTE DISPOSAL SITES AFFIDAVIT OF INTEREST OWNERS MINERALS AND/OR SUBSURFACE ESTATE Legal Description: NW 1/4 Section 31 . TIN, R67W. THE UNDERSIGNED, being first duly sworn, states that to the best of his or her knowledge the attached list is a true and accurate list of the names and addresses of all mineral owners and lessees of mineral owners on or under the parcel of land under as their names appear upon the records in the Weld County Clerk and Recorders Office or from an ownership update from a title or abstract company or an attorney. t(i A>Li�Pl/r�kG'' 17 'lu44, ribv, /H/9d) 6-2),..„006)10 l!.ow 1 SOLID WASTE DISPOSAL SITES AFFIDAVIT OF INTEREST OWNERS SURFACE ESTATE Commission expires )0/31/X00 //\�l Legal Description: NW 1/4 ser•tion 31 , T3N, R67W THE UNDERSIGNED, being first duly sworn, states that to the best of his or her knowledge the attached list is a true and accurate list of the names,"addresses, and the corresponding Parcel Identification'Number assigned by the Weld County Assessor of the owners'of property (the surface estate)within five hundred feet of the property under consideration. This list was compiled from the records of the Weld County Assessor, or an ownership update from a title or abstract company or attorney, derived from such records, or from the records of the Weld County Clerk and Recorder. The list compiled from the records of the Weld County Assessor shall have been assembled within'thirty days of the application's submission date. /jg (- &sri r 94e. • u • Print Namcf �j� CH Date l0-/-oa Employed by pfresearchdoneforempioyer) �"�'� CO S, C ✓n C Files requested: 7( S,Z Z L( U I understand that all files will be kept in their original condition. No papers will be removed, rearranged, or damaged. Copies of the file will be made by Department of Planning Staff only. 8 i4" x 11" copies are $1.25 per page, 24" x 36" or 18" x 24" maps are $10.00 per map. Si nature Files returned to Depart = o ` .nning Services Staff. S. I(re of Dep/me` of Planning Services Staff Hello