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Home My WebLink AboutSupplemental Application for Certificate of DesignationENGINEERS AND CONSTRUCTORS (*MK-FERGUSON COMPANY A MORRISON KNUDSEN COMPANY HEADQUARTERS OFFICE ONE ERIEVIEW PLAZA CLEVELAND. OHIO U.S A. 44114 PHONE. (216) 523-5600/TELEX 985542 December 20, 1990 DEC 704)_1990 GARFIELD COUNTY Garfield County Planning Commission 109 - 8th Street Glenwood Springs, CO 81601 REPLY TO MK-FERGUSON COMPANY REMEDIAL ACTIONS CONTRACTOR-UMTRA PROJECT PO BOX 9136 ALBUOUEROUE. NEW MEXICO USA 87119 SUBJECT: Certificate of Designation for Establishment and Operation of a Solid Waste Disposal Site Uranium Mill Tailings Remedial Action Project Rifle, Colorado Dear Commission Members: Please find enclosed supplementary information to our application for a Certificate of Designation filed with the County on July 24, The supplementary information covers 1. Air Emissions Standards 2. Monitor Well Construction 3. Groundwater Constituents 4. Groundwater Test Methods 5. Explosive Gases the following items: 1990. This information is supplied in response to review comments of Ms. Pat Martinek of the Colorado Department of Health to Chairman Marion Smith on November 5, 1990. We trust that the supplementary information will enable you to complete your review and approval of our application. If you have any questions, please contact Rob Cooney or Don Bradley of my staff at 1-800-443-4379. Sincerely, MK -Ferguson Company acid t, .4fT J. G. Oldham Project Director JGO/REC/DPB/sls Enclosures: CD Application - Supplementary Information cc: C. Smythe - DOE/UMTRA (w/enc.) S. Arp - DOE/UMTRA (w/enc.) C. Watson - TAC/UMTRA (w/enc.) P. Martinek - CDOH (w/enc.) J. Hams - CDOH (w/enc.) M. Bean - Garfield County Planning Commission 4873K URANIUM MILL =its REMEDIAL ACTION PROJECT RIFLE, COLORADO APPLICATION FCR CERTIFICATE OF DFSIQNATZON FCR ESIABLISMENT AND OPERATION OF A SOLID %ISIT DISPOSAL SITE GARFIELD OXNIy COLORADO SUPPLEMENTARY INFORMATIC Deo®ber 1990 Submitted by MK -Ferguson Cxmpany P.O. Box 9136 AlbligUerque, Neta Mexico 87119 On behalf of U.S. Department of Energy Albu uerque CperatiOns Office P.O. fax 5400 Albuquerque, New Merl op 87108 F:\SPA\CERTSUP•PFL 3885-RFLrG-01-03736-02 121990 URANIUM KELL TAIIJ1 REMEDIAL ACTION PROJECT' RIFLE, ODIDRADO APPLICATION FU CERTIFICATE OF DESIGNATION FOR ESTABLISHMENT AND OPERATION OF A SOLID WM1E DISPOSAL SITE GARFln O7RTPY ODIfl AD0 SUPPLEMENTARY INFOI ATION 1. Non -radiological Air Fmiasions Standards The primary source of project -generated air pollution will be from vehicles and equipment operating on the sites and transporting materials. Dust from earth moving activities will occur. Water will be sprayed on the construction sites, as needed, to mitigate air pollution in accordance with the requirements of Colorado Department of Health Air Emissions Permits. Tb minimize dust generation, all unpaved haul roads will be sprayed with water to maintain adequate moisture content as specified in the project Air Emission Permits. Water sprays will be used at all loading and off- loading operations. Since all UMPRA sites to date have in excess of one percent silica quartz, monitoring is done on a routine basis for both worker protection and environmental maintenance. For worker protection monitoring, small sampling pumps will be used to collect particulates on a filter cassette which will then be analyzed by an accredited laboratory. Environmental compliance will be met by monitoring per EPA methods for total suspended particulates (TSP). The program will meet the conditions specified by Air Emissions Permits issued by the State of Colorado. Sampling will be done once every three days, twenty-four hours induration during construction activities. Samples will be correlated with meteorological data showing wind directions and wind speeds. A quarterly F:\UMPRA\cERISUP.RFL - 1 - 3885 -RFL -G-01-03736-02 121990 report will be sent to the Colorado Department of Health Air Pollution Control Division certifying all monitor records for that period. The above procedures will assure both worker protection and proper environmental controls. 2. Monitor Wells The DOE Standar__. Operating Procedure for monitor well construction complies with RCRA regulations, which are generally applicable to UMIRA sites The RCRA guidance for monitor well construction is presented in the "RCRA ground -water monitoring technical enforcement guidancedoclment" (USEPA, 1986) and in "Test methods for evaluating solid waste, physical/chemical methods" (USEPA, 1987). All DOE monitor wells at Colorado UMIRA facilities are permitted by the State of Colorado, and therefore, must fly with applicable Colorado regulations. 3. Groundwater Constituents The UMIRA Technical Approach Document (TAD, DOE 1989) outlines the approach for monitoring background and downgradient groundwater at UMPRA disposal sites. In general, hazardous constituents listed in Table 1 of CFR 192.02(a)(3)(i) and in Appendix I of 40 CtR 192 are characterized in tailings pore fluids and in background groundwater at UMIRA disposal sites. (Appendix IX of 40 CFR 264 may be used to satisfy the analytical requirements of Appendix I of 40 CFR 192). An abbreviated list of these constituents is shown in Figure 1. F:\UMTRA\CERTSUP.RFL - 2 - 3885 -RFL -G-01-03736-02 121990 4. Groundwater Test Methods The DOE follows the EPA -approved and established procedures listed in 40 CFR 136.3 or in 40 CFR 261. These are comparable to the methods described in the Colorado Solid Waste Regulations. Only EPA -prescribed statistical testing methods are used to determine exceedences of the groundwater protection standards at UMPRA disposal sites. The methods include developing confidence intervals and conducting parametric or nonparametric analyses of variances (ANOVAs) to determine whether downgradient groundwater has been contaminated. Tests of Proportions may be substituted for ANOVAs when there is insufficient data to perform an ANOVA. This approach is outlined in detail in "Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities" (EPA, 1989). Although the DOE does not conduct T-tests as stipulated in the Colorado Solid Waste Regulations Part 2.3.3, the CDH has stated that the RCRA statistical approach is a reasonable alternative to the T-test approach of the Colorado Solid Waste Regulations (personal carmunication between Wendy Naugle, Colorado Department of Health, and Art Vollmer, Jacobs Engineering, Technical Assistance Contractor to the DOE (TAC), in December, 1990). The above -referenced work will be performed quarterly by the TAC. 5. Explosive Gas Field observations at Estes Gulch have not shown bubbling samples or positive pressure release, i.e., no evidence of explosive gases. In addition, the site is underlain by the Wasatch Formation which is not known as an oil or gas reservoir. F:\DMIRA\CERTSUP.RFL - 3 - 3885-RFir-G-01-03736-02 121990 United States Department of Energy, 1989. Technical Approach Document, Revision II. UMIRA-D0E/AL 050425.0002. DOE Albuquerque Operations Office. 289 pp. United States Environmental Protection Agency, 1986. RCRA groundwater monitoring technical enforcement guidance document; Office of Waste Programs Enforcement, Office of Solid Waste and Emergency Response, OSWER-9950.1, USEPA, 317 pp. United Staten Environmental Protection Agency, 1987. Test methods for evaluating solid waste, physical / chemical methods (SW -846); Office of Solid Waste and Emergency Response, Government Printing Office, Washington, D.C., 519 pp. United States Environmental Protection Agency, 1989. Statistical analysis of ground -water monitoring data at RCRA facilities. Interim Final Guidance. Office of Solid Waste Management Division, USEPA, Washington, D.C. F:\pECRA\CERESUP.RFL - 4 - 3885-RFIrG-01-03736-02 121990 CERTIFICATE OF DESIGNATION FOR ESTABLISHMENT AND OPERATION OF A SOLID WASTE DISPOSAL SITE SUPPLEMENTARY INFORMATION FIGURE 1 GROUNDWATER CONCENTRATION LIMITS (40 CFR 192.02) F:\UMTRA\CERTSUP.RFL - 5 - 3885 -RFL -G-01-03736-02 121990 Table 1 - Maximum Concentration of Constituents for Ground -water Protection Maximum Constituent Concentration' • Arsenic 0.05 Barium 1.0 Cadmium 0.01 Chromium 0.05 Lead 0.05 Mercury 0.002 Selenium 0.01 Silver 0.05 Nitrate (as N) 10 Molybdenum 0.1 Combined radium -226 and radium -228 5 pCi/liter Combined uranium -234 and uranium -238 30 pCi/liter Gross alpha -particle activity (excluding radon.and uranium .15 pCi/liter Endrin (1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4, 4a,5,6,7,8,8a-octahydro-1,4-endo,endo-5,8- dimethanonaphthalene) 0.0002 Lindane (1,2,3,4,5,6 -hexachlorocyclohexane, gamma isomer) 0.004 Methoxychlor (1,1,1-Trichloro-2,2'-bis (p-methoxy- phenylethane)) 0.1 Toxaphene (C10H10C16, Technical chlorinated camphene, 67-69 percent chlorine) 0.005 2,4-D (2,4-Dichlorophenoxyacetic acid) 0.1 2,4,5 -TP Silvex (2,4,5-Trichlorophenoxypropionic acid) 0.01 Benzene (Cyclohexatriene) 0.005 Vinyl chloride (Ethene, chloro-) 0.002 Tetrachloromethane (Carbon tetrachloride) . . . 0.005 1,2-Dichloroethane (Ethylene dichloride) . . . 0.005 Trichloroethene (Trichloroethylene) 0.005 1,1-Dichloroethylene (Ethene, 1,1-dichloro-) . 0.007 1,1,1 -Trichloroethane (Methyl chloroform) . . . 0.20 p -Dichlorobenzene (Benzene, 1,4-dichloro-) . . 0.075 Milligrams per liter unless stated otherwise. 55