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CC&V, Arcqua Gulch WQA -Draft CO-0043648 <br />APPENDIX A <br />WATER QUALITY ASSESSMENT <br />Cripple Creek 8. Victor Gold Mining Company, <br />Arequa Culch and Cripple Creek <br />Table A-l <br />Assessment Stimmarv <br />Name ofFacility Cripple Creek &Victor Gold Mining Company, <br /> Are ua Gulch <br />CDPS number CO-0043648 <br />WBID -Stream Segment Arkansas River Basin, Upper Arkansas Sub- <br />- basin, Stream SegmenE 21.and 22a: t/lainstem <br /> of Crippic Creek from the source to the <br /> confluence with Fourntile Creek <br /> (COARUA31) and iklainstem of Arequa <br /> Gulch from the source to the confluence with <br /> Cri Ie Creek (COARUA22a). <br />Classifications Cold Water Aquatic Life Class 2 <br /> Class 2 Recreation <br /> A~~riculture <br />Desi nation Use Protected <br />I. Introduction <br />The water quality assessment (WQA) of the Cripple Creek &and V ictor Gold Mining Company <br />("CC&.V"), Arcqua Gulch sediment pond discharge was developed by the Colorado Department <br />of Public Health and Environment (CDPHE), Water Quality Control Division (WQCD). The <br />6VQA was prepared to facilitate issuance of the Colorado Discharge Permit System (CDPS) . <br />pemtit for the CC&V sediment pond discharge, CDPS Permit No: CO-0043648, and is intended <br />to detem~ine the assimilative capacities a~~ailable to the CC&V discharge for pollutants fotmd to <br />be of concern. Figure A-1 on the following page contains a map of the study area evaluated as <br />part of this WQA. <br />Water collected in the sediment pond below the CCRV Valley Leach Facility is discharged to <br />Arequa Gulch, which often has no flow. The effluent is conveyed to Cripple Creek wfiich is a <br />perennial stream. <br />Arequa Gulch (Upper Arkansas River Basin Segment 22a) is water quality limited, and is on the <br />Colorado 1998 303{d) List of Impaired R~aterbodies. The parameters of water quality <br />impairments cited on the 1498 303(d) List for Arequa Gulch arc: pH, Al, ivln, CN, Fe, and Zn. in <br />January 2001 Mn, Fe and Zn were delisted from the 303{d) List on the basis-that the segment is <br />meeting the assigned standards. Asite-specific hearing was held in November 2001 to consider <br />a site-specific standard for pH, which was adopted by Ehe Water Quality Control Commission <br />('Commission"). 'this parameter will be considered for removal from the 1998 303(d) List once <br />Appendix A Page ] of 15 <br />