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1 r <br />COLORADO DISCHARGE PERMIT SYSTEM (COPS) <br />SUMMARY OF RATIONALE <br />CENTRAL APPALACHIA MINING, LLC - MCCLANE CANYON MINE <br />COPS PERMIT NUMBER CO-0038342, GARFIELD COUNTY <br />TABLE OF CONTENTS <br />L TYP80F-ERAfn'..........._._.._............_....._......_......._. .........................._.._.................. ............................................................................1 <br />a FACILITYEVFORMATION..__ ........................._....._................._..................._.....~...... ........................._............................_......._..........1 <br />m. RECEIVEVC STREAAf.........._ ............._.........................._..._......_..._..............._.........._. ...................................._......._.............................1 <br />fY. FACa1TYDESCRIPTION ..................._......._..._..................._..............._..................... _......._................................._...._..........__.........1 <br />V. PERFORMANCE HISTORY ....................._..............._._...._............................_............... .................................._............_...._..................T <br />V!. TEAMS AN'D CONDrrIONS OP PERMR ..........................._..._._....._............._......._._. _.._..........................._...................._............._....3 <br />VR REFERENCES........-......._ ......................._......_..._..............__......_............._................_ ........_......._...................._._....._._....._..........._.9 <br />Vfb POBLlC NOTICE COMMENTS ................_........._.............._.._.._........__..................... ..............._............_..._...._......._...._.._...............9 <br />I. TYPE OFPERMIT Third Renewal <br />II. FACILITYINFORMATION <br />A. Facility Type: Industrial, Minor <br />Fee Category: Coal Mining, Category 02, Subcategory 2 <br />Category Flow Range: Mine water, preparation plant discharge <br />Annual Fee.• 8945 <br />B. SIC Code: 1222 (Coal Underground) <br />C. Legal and Facility Contact: Walter WhiYledge, Mine Manager <br />P.O. Box 98' <br />Loma, CO 81524 <br />(970) 858-3960 <br />D. Facility Location: In the SW 1/4, Section 21, T7S, R102W, latitude 39 26' 10", longitude 108 46' 10"; at <br />3148 Hwy 139 <br />E. Discharge Point: Outfa11001 is the discharge ofsurface runoff water to an unnamed tributary to East Salt <br />Creek, outfal1002 is the discharge of pumped mine drainage to an unnamed tributary to <br />East Salt Creek. <br />F. Facility Flows: Outfa11001: flow varies with precipitation, however discharge is intermittent and occurs <br />rarely; since January 1998, discharge has only occurred during the 3'd calendar quarter <br />of 2001. Otttfal1002: flow varies with the volume of water encountered in the <br />underground mining area. No discharge occurred between January ]998 and March <br />2002; however discharge has occurred frequently since March 2002. <br />G. CMLRB Permit No.: C-04-80 <br />HI. RECEIVING STREAM <br />An assessment of the stream standards, low flow data, and ambient stream data has been performed to determine the assimilative <br />capacities for the unnamed tributaries to East Salt Creekfor potential pollutants of concern. This information is contained in <br />Appendix A to this rationale. The Division's Permits Unit has reviewed the assimilative capacities to determine the appropriate <br />water quality-based effluent limitations. The limitations based on the assessment and other evaluations conducted as pan of this <br />rationale can be found in Table VI-2 of this rationale. <br />ISSUED EFFECTIVE <br />Revisal 06/09/04 <br />