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PART [ <br />Page No. 5 <br />Permit No. COG-850000 <br />B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations <br />- a. Active Minine Outfalls (continued) <br />ACTIVE MINING ALTERNATE LIMTIATIONS (continued) <br />Any discharge or increase in the volume of a discharge mused by precipitation within any 24-hour period <br />Rreater than the 10-veaz. 24-hour nrecioitation event (or snowtneit of equivalent volume) may comply with <br />the following limitatoas - subject m burden of proof requirements described in Pan I.B.I.d). <br />Paramder <br />- Limitation <br />30-Day Avg. Daily Max. <br />Flow, MGD Repon Rcpon <br />Total Suspended Solids, mg/f Report Report <br />Total Iron, mg/P Repon Repon <br />Settleable Solids, ml/f Repon Repon <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grrase, mg/f N/A 10 <br />Total Dissolved Solids, mg/( Report Repon <br />CO River Basin Only <br />Total Phosphorus (as P), mg/P <br />D <br />i <br />ONLY <br />il <br />i <br />UU <br />B <br />C Report Report <br />lon Reservo <br />eaz <br />ra <br />r and <br />pper <br />reek <br />nages <br />D <br />b. Post-Minine Outfalls <br />Post-mining limitations may apply to outfalls serving surface areas which have ban resumed to the required <br />contour and on which revegetation (specifically, seeding or planting) .work has commenced. The permitter <br />may request consideration for change from active mining limitations to pos[-mining limitations when these <br />conditions have bees tact. <br />POST-MINING PRIMARY LIII~IITATIONS <br />Parameter Limitation <br />Flow, MGD Report <br />Settleable solids, mf/l 0.5 <br />pH, s.u. 6.5-9.0 <br />Oil aad Grease, mg/l 10 <br />Total Dissolved Solids, mg/P <br />CO River Basin ONLY Repon <br />Total Phosphorus (as P)' mg/l <br />Dillon Reservoir and Upper Beaz Creek Drainages ONLY Report <br />Sa Part I.C. [or Det-tuitions <br />