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<br />B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations <br />(a) Active Mining <br />Effluent Parameter <br /> <br />PART I <br />Page 4 <br />Permit No. COC-850000 <br />Discharge Limitations <br />Maaimum Concentration <br />30-day avg. a/ <br />Flow, MGD N/A <br />Total Suspended Solids, mg/1 35 <br />Total Iron, mg/1 (Eaisting Sources) 3.5 <br />Total Iron, mg/1 (New Sources) 1/ 3.0 <br />Total Dissolved Solids, mg/1 N/A <br />(Colorado Ri ver Basin Only) <br />Total Phosphorus (as P), mg/1 N/A <br />(Dillon Reser voir Drainage Only) <br />pH shall remain between 6.5 and 9.0 s.u. c/. <br />Report <br />70 <br />7.0 <br />6.0 <br />Report <br />Report <br />Oil and grease shall not eaceed 10 mg/1 c/ nor shall there be a visible sheen f/. <br />Any discharge or increase in [he volume of a discharge caused by <br />precipitation within any 24-hour period less than or equal to the <br />10- ear, 24-hour reci itation event (or snowmelt of equivalent <br />volume ~ comply wit3i the following limitations subject to burden <br />of proof requirements described in Part I.B.I.d). <br />Effluent Parameter <br />f, <br />Discharge Limita[ions <br />Maaimum Concentration <br />Daily Maaimum c/ <br />Flow, MGD <br />Settleable Solids, ml/1 h/ <br />Total Dissolved Solids, mg/1 <br />(Colorado River Basin Only) <br />Total Phosphorus (as P), mg/1 <br />(Dillon Reservoir Drainage Only) <br />pH shall remain between 6.5 and 9.0 s.u. c/. <br />Report <br />0.5 <br />Report <br />Report <br />011 and grease shall not exceed 10 mg/1 c/ nor shall there be a visible sheen f/ <br />Daily Max. c/ <br />See Part I.B.3. for Footnotes <br />