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<br />Water QuaLit~ Conci._ .. _. sio^ <br />4210 East 11 tit Aveuuo <br />Denver, Colorado 30220 <br />RATIONALE <br />COAL CSINING PACILI'fIES <br />(SURFACE RUNOFF ONLY) <br />GENERAL PERMIT IN COLORADO <br />COLORADO DISCHARGE PERPII'C NUM(iL'R COG-850000 <br />Facilities performing coal minim activities are located along many streams in <br />the State of Colorado. !."aters 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 Uischarge Yermic 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 />I. 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 />5. Require similar monitoring; and <br />6. Are more appropriatelti~ controlled under a General Permit than <br />individual pe rinits. <br />INDUSTRY DESCRIPTION: <br />The coal mining industry includes facilities that may Ue involved in the <br />extrac Cion, processing and out-loading of coal. Various facilities perform <br />one or more of these operations. Goals are classified based on the fixed <br />carbon content, the volatile matter fraction, and the heating value. The <br />general classification ranks are lignite, subbicuininous, 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 />