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PART I <br />Page No. 4 <br />Permit No. COG-850000 <br />B. EFFLUENT LIhIITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations <br />a- Active Minine Outfalls <br />ACTIVE MINING PRIMARY LII~IITATIONS <br />Parameter Limitation <br />30-Day Avg. Daily Max. <br />Flow, MGD Report Report <br />Total Suspended Solids, mg/P 35 70 <br />Total Iron, mg/P <br />Exis[ing Sources 3.5 7.0 <br />New Sources 3.0 6.0 <br />Settleable Solids, mP/P Report Report <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grease, mg/P N/A IO <br />Total Dissolved Solids, mg/P Report Report <br />CO River Basin Only <br />Total Phosphorus (as P), mg/P <br />Dillon Reservoir and Upper Bear Creek Drainages ONLY Report Report <br />ACTIVE MINING ALTERNATE LIIIIITATIONS <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-holy period <br />less than or equal to the 10-vear. 24-hour Drecioi[ation event (or snowmel[ of equivalent volume) <br />comply with the following limitations -- subject to burden of proof requirements described in Patt I.B.I.d). <br />Parameter Limitation <br /> 30-Day Avg. Daily Max. <br />Flow, MGD Report Report <br />Total Suspended Solids, mg/P Report Report <br />Total Iron, mg/P Report Report <br />Settleable Solids, mPlP Report 0.5 <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grease, mg/P N/A 10 <br />To[al Dissolved Solids, mg/P Report Report <br />CO River Basin Only <br />Total Phosphorus (as P), mg/P <br />B <br />Dill <br />i <br />d UU <br />C <br />k D <br />ONLY Report Report <br />pper <br />ear <br />on Reservo <br />r an <br />ree <br />rainages <br />See Part I.C. for DeCutitioas <br />