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COLOI DEPARTMENT OF HEALTH <br /> Wate _ ality Control Division <br /> Rationale - Page 4 <br /> PERMIT NUMBER: CO-0000396 <br /> EFFLUENT LIMITATIONS CRITEREA: Table 3 shows a comparison of applicable state and federal effluent <br /> limitations and in-stream water quality standards (WQS)for all discharge <br /> points from this facility. BPT refers to federal Best Practicable Control <br /> technology for coal mines. In addition to the standards outlined in the <br /> table, salinity will also have to be considered and will be discussed <br /> later in this summary. <br /> TABLE 3 <br /> COMPARISON OF APPLICABLE EFFLUENT LIMITATIONS <br /> AND STREAM STANDARDS <br /> Parameter BPT SES WQS Parameter BPT SES WQS <br /> Flow No limit No limit No limit Nickel No limit No limit 0. 1 <br /> Boron No limit No limit . 75 Selenium No limit No limit .Ol <br /> Arsenic No limit No limit .05 Silver No limit No limit .0001 <br /> Cadmium No limit No limit .001 Zinc No limit No limit .05 <br /> Trivalent chromium No limit No limit .05 Oil s grease No limit <10.0 No limit <br /> Hexavalent chromium No limit No limit .025 , pH _ _6.0-g,o 6S.0o9�.Q.,o-P --6.�9 <br /> Copper No limit No limit . 01 Fecal coliforms No limit No limit 2000/100m1 <br /> Lead No limit No limit .025 Sulfate No limit No limit 250 <br /> .Irony 3.5/7.0. No _limiL 1 .0. Chloride No limit No limit 250 <br /> Manganese,, No limit No limit . 1 .0� Nitrite No limit No limit .05 <br /> Mercury No limit No limit .00005 Nitrate No limit No limit 10.0 <br /> jotal.-Suspended Solids .,,35/70- 30/45. No limit <br /> SES - State Effluent Standard <br />