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<br />COLORADO DEPARTMENT OF HEALTH <br />Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br />RATIONALE <br />C <br />COAL MINING FACILITIES - <br />(SURFACE RUNOFF ONLY) <br />GENERAL PERMIT IN COLORADO <br />COLORADO DISCHARGE PERMIT NUMBER COG-850000 <br />Facilities performing coal mining activities are located along many streams in <br />the State of Colorado. Waters discharged from coal mining facilities are <br />subject to the requirements of the State of Colorado Water Quality Control <br />Act, 1973 as amended. Regulations of the Colorado Discharge Permit System, <br />(CCR, Title 5, Chapter 1002-2) and Title 40 Part 434 of the Code of Federal <br />Regulations (40 CFR 434) specify the wastewater discharge requirements for <br />this industry. <br />Section 6.10.2 of'the Colorado Discharge Permit System Regulations provides <br />for the issuance of General Permits where covered facilities: <br />1. Are within prescribed geographical boundaries; <br />2. Involve substantially the same type of operating conditions; <br />3. Discharge the same type of waste; <br />4. Require the same effluent limitations or operating conditions; <br />S. Require similar monitoring; and <br />6. Are more appropriately controlled under a General Permit than <br />individual permits. <br />INDUSTRY DESCRIPTION: ~~ <br />The coal mining industry includes facilities that may be involved in the <br />extraction, processing and out-loading of coal. Various facilities perform <br />one or more of these operations. Coals are classified based on the filed <br />carbon content, the volatile matter fraction, and the heating value. The <br />general classification ranks are lignite, subbituminous, bituminous, and <br />anthracite. The primary end uses for coal are for combustion in steam boilers <br />and for metallurgical coke ovens. In Colorado there are approximately 70 <br />facilities involved in the extraction (mining) of coal and/or processing <br />(preparation) of coal. <br />