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PART I <br />Page No. 5 <br />Permit No. COG-850000 <br />B. EFFLUENT LIl~IITATIONS AND MONITORING REQUIItEMENTS <br />I. Efllurnt Limitations <br />a. Active Miniae Outfalls (continued) <br />ACTIVE MINING ALTERNATE LII~IITATIONS (continued) <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-boor period <br />greater than the 10-vear. 24-hour oteciaitatioa event (or snowmelt of equivalent volume) ~ comply with <br />the following limitations -subject to bttrden of proof tequitements described in Part I.B.I.d). <br />Parameter <br />. Lim <br />30-Day Avg. itation <br />Daily Max. <br />Flow, MGD Report Report <br />Total Suspended Solids, mg/1 Repots Report <br />Total Iron, mg/L Report Report <br />Settleable Solids, m[/1 Report Report <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grease, mg/[ N/A 10 <br />Total Dissolved Solids, mg/1 Report Report <br />CO River Basin Only <br />Tonal Phosphorus (as P), mg/1 Report Report <br />Dillon Reservoir and LLlipper Bear Creek Drainages ONLY <br />b. Post-Miniae Outfalls <br />Post-mining limitations may apply to outfalls serving surface areas which have been returned m the required <br />contour and on which revegetation (specifically, soedmg or planting) work has commenced. The pertnittee <br />may request consideration for change from active mining 1'rmitations to post-mining limitations whm these <br />conditions have bem met. <br />POSC-MINING PRIMARY LII~II'CATIONS <br />.. <br />Parameter _ Limitation <br />Flow, MGD Report <br />Settleable Solids, ml/l 0.5 <br />pH, s.u. 6.5-9.0 <br />Oii and Grease, mglf 10 <br />Total Dissolved Solids, mg/L Report <br />CO River Basin ONLY <br />Tota! Phosphorus (as P), mg/L Report <br />Dillon Reservoir and Upper Bear Creek Drainages ONLY <br /> <br />~- <br />;. <br />See Part I.C. for De£mitions <br />