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<br />COLORr1D0 DEPARTMENT OF HE.iLTH <br />Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br />page 2 of 3 <br />Permit No. COG-850001 <br />III. RECEIVING STREA.`S: <br />A. Identi`!_cation, Classification, and Numeric Standards <br />1. Identification: Discharges to Coal Gulch (Segment 13b, <br />Aninas and Florida River Sub-basin, Segment <br />13b, San Juan River Basin). <br />2. Classification: Recreation, Class ^_ <br />Acuatic Life, Class 2 (Cold) <br />AgricuLcure <br />3. Numeric Standards: T_he standards which have been assigned in <br />accordance with the above classifications <br />can be found in 3.4.0 Classifications and <br />Numeric Standards for the San Juan River <br />Basin (5 CCR 1002-8), as amended March 1, <br />1992. Ic mould be noted chat this <br />facility does not discharge pollutants <br />whici are limited by water quality <br />standards with the exception of pH. <br />B. Receiving [vacer Daca <br />1. Scream Low Flaw: Noc Applicable: effluent limitations are not flow <br />based. <br />IV. FACILITY INFORMATION: <br />The facility is a small underground coal mine. No changes in the facility <br />were indicated in the permit r=_newal application form. The following <br />facility description is essentially repeated from the pr=_vious permit <br />rationale. <br />A maximum of 250,J00 tons of coal are mined per ;year. The coal is Chen <br />crushed and stared on site. The original 1i`etime of ciis operation, per <br />the original permit application Jar.. 1485) •aas for 12 years. No water is <br />expected co be encountered witiin tie mine, nor •.ri11 any water be used in <br />the crushing operation. '.7acar wii'_ be used for dust suppression •aithin <br />the coal iandl:ng system, an :ie .emporar•r stockpile, and on tie mine <br />access road. Ne water wi_'_ be duciarged :rpm the dust suppression <br />system. <br />Runoff from disturbed areas is coiiec_zd in a sedimentation pond. The <br />pond has been designed to contain runoff ~eneraced by the 10-;year, 24-hour <br />precipitation event. No chemical treatment or land application will be <br />ucilited .n the sedimentation :a r.d. The pr i.ra r;: oucfa'_i utii Ices a f'ow <br />measuremer.c s•~stem. <br />