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S <br />COLORADO DEPARTMENT OF HEALTH <br />• Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br />Page 2 of 3 <br />Permit No. COG-850008 <br />III. RECEIVING STREAM: (continued) <br />2. Classification <br />Recreational, Class 2 <br />Aquatic Life, Class 2 (Cold) <br />Agricultural Use <br />3. Numeric Standards: <br />The standards which have been assigned in <br />accordance with the above classifications <br />can be found in 3.3.0 Classification and <br />Numerical Standards for the Upper Colorado <br />River Basin and North Platte River <br />(Planning Region 12), as amended March 1, <br />1992. It should be noted that this <br />facility does not discharge pollutants <br />which are limited by water quality <br />standards with the exception of pH. <br />B. Receiving Water Data <br />• 1. Stream Low Flow: Not Applicable; effluent limitations are not flow <br />based. <br />IV. FACILITY INFORMATION: <br />Two sedimentation ponds, designed to contain the 10-year, 24-hour <br />precipitation event, exist at the mine site. <br />Since the facility is currently inactive, any discharges from the facility <br />should consist of surface runoff only. If discharge of mine water, prep <br />plant water, sanitary water or other non-surface runoff related water <br />becomes necessary, the Permittee will have to request that an individual <br />NPDES permit be drafted prior to the occurrence of such discharge, to <br />replace this general permit. <br />V. ANTIDEGRADATION: <br />These are not reviewable waters pursuant to Section 3.1.8(3)(a) of the <br />Basic Standards and Methodologies for Surface Water (SCCR 1002-2), based <br />on a finding of no increased water quality impact. <br />i <br />