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Colowyo Coal Company <br />COG-0045161 <br />Water Quality Assessment <br />Good Spring Creek, Taylar Creek and Wilson Creek <br />Colowyo Coal Company <br />Table 1 <br />Assessment Summary <br />Name of Facility Colowyo Coal Company <br />CDPS number CO-0045161 <br />WBID -Stream COLCLY03e - Mainstem of Good Spring Creek above Wilson Reservoir <br />Segment and Wilson Creek and their tributaries except for Jubb Creek. <br /> Aquatic Life Warm Water Class 2 <br />Classifications Recreation Class lb <br /> Water Supply <br /> A 'culture <br />Designation Use-Protected <br />I. Introduction <br />This water quality assessment of Good Spring Creek, Taylor Creek and Wilson Creek was conducted <br />• by the Colorado Water Quality Control Division (4VQCD) Assessment Unit for renewal of the <br />Colorado Discharge Permit System (CDPS) permit for the Colowyo Coal Company, Permit No. CO- <br />0045161. Colowyo Coal is requesting a discharge permit renewal of the current permit to discharge <br />effluent from ten locations at the edge of the mine permit boundaries. <br />The Colowyo Coal Company currently discharges mine dewatering and runoff from ten locations to <br />Good Spring Creek and Taylor Creek; both tributaries of Wilson Creek a tributary of the Yampa <br />River. Water is collected from the mine aeeas and then discharged to these waterways. The <br />Colowyo Coal Company currently has the capacity to discharge a total maximum of 47.56 million <br />gallons per day (mgd) or 73.72 cubic feet per second (cfs) of effluent from the ten outfalls. The <br />Colowyo Mine is located between Craig and Meeker near Axial adjacent to Colorado Highway 13 in <br />Moffat County of northwest Colorado. The drainages cover small areas in a semi-and region <br />between the Danforth Hills and the Yampa River. The area land use is primarily agricultural grazing <br />and resource production such as coal mining and oil and gas production. Figure 1 contains a map of <br />the study area evaluated as part of this WQA. Table 2 identifies the.mine, the outfalls and drainage, <br />and stream segment number. <br /> <br />WQA 1 Revised 1/24/2005 <br />