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Mountain Coal and Beaz Coal Water Quality Assessment CO-0038776 and CO-0044377 APPENDIX A WATER QUALITY ASSESSMENT THE NORTH FORK OF THE GUNNISON RIVER, SYLVESTER GULCH, WEST SYLVESTER GULCH, THE DRY FORK OF MINNESOTA CREEK, LONE PINE GULCH MOUNTAIN COAL COmrANY, LLC, WEST ELK MI1vE BEAR COAL COMPANY, INC., BEAR #3 MmrE Table A-1 Assessment Summa Name of Mountain Coal Company, LLC and Bear Coal Company, Inc. Facilities CDPS Numbers CO-0038776 and CO-0044377 WBID -Stream 1. Gunnison River Basin, North Fork of the Gunnison River Sub-basin, Segments Stream Segment O2: Mainstem of North Fork ofthe Gunnison River from the confluence of Muddy Creek and Coal Creek to the Black Bridge (41.75 Drive}. COGUNF02 2. Gunnison River Basin, North Fork of the Gunnison River Sub-basin, Stream Segment 06: All tributaries to the North Fork of the Gunnison River including takes, reservoirs, and wetlands which are not on national forest lands, except for the specific listings in Segments 4, 5 and 7. COGUNF06 Classifications 1. Cold Water Aquatic Life Class 1 Class 1 a Existing Primary Contact Recreation Agriculture Water Supply 2. Warm Water Aquatic Life Class 2 Class Ib Potential Primary Contact Recreation Agriculture Water Sup ly Designation 1. Undesignated 2. Use Protected I. Introduction The water quality assessment (WQA) of the North Fork of the Gunnison River, Sylvester Gulch, West Sylvester Gulch, the Dry Fork of Minnesota Creek, and Lone Pine Gulch neaz the various Mountain Coal Company, LLC West Elk Mine and the Bear Coal Company Inc., Beaz #3 Mine Wastewater Treatment Facilities, hereinafter the Mountain Coal WWTFs and Bear Coal WWTF, was developed for the Colorado Department of Public Health and Environment (CDPHE) Water Quality Control Division (WQCD). The WQA was prepazed to facilitate issuance of the Colorado Discharge Permit System (CDPS) permits for the Mountain Coal Company, CDPS Permit No. CO- Appendix A Page 1 of 20 Last Revised 3/9/2004