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Snowcap Coal Co. Inc WWTF Water Quality Assessment CO-0027146 <br />APPENDIX A <br />WATER QUALITY ASSESSMENT <br />COLORADO RIVER <br />SNOWCAP COAL COMPANY, INC. WWTF <br />Table A-I <br />Assessment Summa <br />Name of Facility Snowca Coal Com any, Inc. WWTF <br />CDPS Number CO-0027146 <br />WBID -Stream Segment Lower Colorado River Basin, Lower Colorado River Sub-basin, <br /> Stream Segment 02: Mainstem of Colorado River from <br /> immediately below the confluence with Pazachute Creek to <br /> immediately above the confluence of the Gunnison River. <br /> COLCLC02 <br />Classifications Warm Water Aquatic Life Class 1 <br /> Class 1 a Existing Primary Contact Recreation <br /> Agriculture <br /> Water Su ly <br />Designation Undesi ated <br />I. Introduction <br />The water quality assessment (WQA) of the Colorado River neaz the Snowcap Coal Company, Inc. <br />Wastewater Treatment Facility (WWTF), hereinafter referred to as the Snowcap WWTF, was <br />developed for the Colorado Department of Public Health and Environment (CDPHE) Water Quality <br />Control Division (WQCD). The WQA was prepazed to facilitate issuance ofthe Colorado Dischazge <br />Permit System (CDPS) permit for the Snowcap WWTF, CDPS Permit No. CO-0027146, and is <br />intended to determine the assimilative capacities available to the Snowcap WWTF for pollutants <br />found to be of concern. <br />Figure A-1 on the following page contains a map of the study area evaluated as part of this WQA. <br />The Snowcap Coal Company is a former coal mine that is in the middle stages of reclamation. The <br />site is adjacent to Interstate Highway 70 neaz the Cameo Exit (Exit 46). The facility dischazges via <br />12 outfalls. However, mine water is dischazged via only three outfalls (Outfalls 001, 002 and 016) to <br />the Colorado River. The remaining nine outfalls discharge treated surface runoff, only, to receiving <br />streams including the Colorado River and Coal Creek. Based on WQCD general approaches, there <br />aze no surface runoff water discharges evaluated in this assessment. This is because automatic <br />dischazges of surface runoffwater will not occur during periods of critical low flow as surface runoff <br />water only occurs during precipitation events, and any manual releases of surface runoff water <br />discharges from ponds will be required to meet the assimilative capacities set forth in this WQA. <br /> <br />Appendix A Page 1 of 12 Last Revised 9/15/2003 <br />