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COLORADO DEPARTMENT OF HEALTH Water Quality Control Division - 4210 East 11th Avenue Denver, Colorado 80220 Page 2 of 3 Permit No. COG-850014 III. RECEIVING STREAM: A. Identification, Classification, and Numeric Standards 1. Receiving Water: Unnamed tributaries to Boultan Draw, a tributary to the Canadian River. 2. Identification: North Platte River Sub-basin, Segment 4, of the North Platte River (Planning Region 12). 3. Classification: Recreation, Class 1 Aquatic Life, Class 1, (Cold) Agricultural Use Water Supply 4. Numeric Standards: The standards which have been assigned in accordance with the above classifications can be found in 3.3.0 Classification and Numeric Standards for the Upper Colorado River Basin and North Platte River (Planning Region 12), (5 CCR 1002-8), as amended September 9, 1991. It should be noted that this facility does not discharge pollutants which are limited by water quality standards with the exception of pH. B. Receiving Water Data 1. Stream Low Flow: Nat Applicable; effluent limitations are not flow based. IV. FACILITY INFORMATION: All SMCRA disturbed areas have been reclaimed. However, two permanent ponds have been approved to remain on the site and disturbed area drainage passes through these structures. Since the facility is currently inactive, any discharges from the facility should consist of surface runoff. If discharge of mine water, prep plant water, sanitary water or other non-surface runoff related water becomes necessary, the Permittee will have to request that an individual NPDES permit be drafted prior to the occurrence of such discharge, to replace this general permit. V. ANTIDEGRADATION: These are not reviewable waters pursuant to Section 3.1.8(3)(a) of the Basic Standards and Methodologies for Surface Water (SCCR 1002-2), based on a finding of no increased water quality impact.