COLORADO DISCHARGE PERMIT SYSTEM (CDPSJ
<br />SUMMARY OF RATIONALE
<br />MOUNTAIN COAL COMPANY, LLC, WEST ELK MINE
<br />CDPS PERMIT NUMBER CO-0038776, GUNNISON COUNTY
<br />TABLE OF CONTENTS
<br /> I TYPE OFPERMIT ........................................................ Error! Bookmwk not defined
<br /> II FACILIlYINFORMA770N .......................................... Errar!Bookmark not defined
<br /> III.
<br />I['. RECEIVING STREAM .................................................. Error! Bookmark not defined
<br />FAC/LITYDESCR/PTION ............................................ Error! Boolanark not defined
<br /> V
<br />VL PERFORMANCE HISTORY .......................................................................................2
<br />TERMSAND CONDIT/ONS OF PERMfI ...................................................................3
<br /> VIL
<br />VIII REFERENCES ........................................................................................................... II
<br />P!lBLIC NOTICE COMMENTS ................................................................................ 11
<br />L TYPE OF PERMIT Renewal
<br />IL FA CILITYINFORMATION
<br />A. Facility Type: Industrial, Minor
<br /> Fee Category:
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<br />R Coal Mining, Category 02, Subcate ory 2
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<br />B. SIC Code: 1222 (Coal Mining Underground)
<br />C Legal Contact: Gene DiClaudio, President
<br /> PO Box 591
<br /> Somerset, CO 81434
<br /> (970) 929-5015
<br />D. Facility Contact: Henry Barbe, Environmental Engineer
<br /> (970) 929-2238 Fax (970) 929-5595
<br />E. Facility Location: In the NE'/., Section 16, TI3S, R90W,~ approx. one mile east of Somerset, CO on Highway 133.
<br />F. Discharge Point: Ta61e II-7 shows all relevant information for outfalls at this facility.
<br /> Tab1eIl-1 --Dischar¢ePoints
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<br />004 MB-2R MW, SR, misc. 0.142 1.603 MG 5.706 MG North Fork of the Gunnison River
<br />005 MB-3 SR ND 0.169 MG 0.746 MG North Fork ojthe Gunnison River
<br />007* N/A Domestic 0.02 * * NA 0.0105 MGD North Fork of the Gunnison River
<br />008 MB-4 SR (Loadout) 0.020 0.007 MG 0.026 MG North Fork of the Gunnison River
<br />009 MB-S SR 0.001 0.182 MG 0.489 MG North Fork of the Gunnison River
<br />DII N/A ztlYir ND NA No Discharge Sylvester Gulch
<br />012 N/A MW ND NA No Discharge Dry Fork of Minnesota Creek
<br />013 N/A MW ND N.4 2.88 MGD Lone Pine Gulch
<br />014 SG-1 SR ND 0.42 MG 0.75 MG Sylvester Gulch
<br />015 RPE SR ND 0.46 MG 2.12 MG North Fork of the Gunnison River
<br /> ort or o t e nnrson :vet
<br />017 MWTF MW 0.62 NA 2.88 MGD West Fork of Sylvester Gulch
<br />018 Borehole SR ND N/A N/A West Fork of Sylvester Gulch
<br />- s ace rW ta - mine water, - eS 1u a ce water tom t e ort or n t e nntS art tver. re anve t o aveYa¢e OW. means norms v n0 tsc ar¢e occurs
<br />(discharge may occur intermittently}, MWTF- mine wafer treatment facility, *OutfaQ 007 dutharges [o Pond hf8-2K whisk su~breguent/y ducharges na Outfall 0"04 to the
<br />North Fark o [he Gunnison River, 'Design capacity
<br />G. CdILRB Permit No.: C-80-007
<br />III. RECEIVING STREAM
<br />An assessment of the stream standards, low flow data and ambient stream data has been performed to determine the assimtlah've
<br />capacities (or the North Fork of the Gunnison River, Sylvester Gulch, Wesf Sylvester Gulch, the Dry Fork of Minnesota Creek and Lone
<br />Prne Gulch for potential pollutants of concern. This information, which is contained in Appendix A to thzs rationale, also includes an
<br />antidegradation review, where appro riate. The Division's Permits Unit has reviewed the assimilative cappacities to. determine fhe
<br />appropriate water quality-based effluent limitations as well as potential limits based on the amidegradation evaluation, where
<br />a 1!cable. The limitations based on the assessment and other evaluations conducted as part of this rationale can be found in Tables VI-
<br />J, t'1-2, VI-3, VI-4, and VI-5 of this rationale.
<br />IV. FACILITYDESCRIPTION
<br />A. Industry Description
<br />1. T e o Indus The facility is an underground coal mining operation producing bituminous coal. The maximum production
<br />rate a prolecte at 8.2 million tons per year. In 1999, 7.0 million tons were produced.
<br />ISSUED: APRIL 19, 2004 EFFECTIVE: JUNE 1, 2004 EXPIRATION: MAY 31, 2009
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