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P.9RT 1 <br />Page No. 5 <br />Permit No. COG-850000 <br />EFFLUENT LIl\9TA770NS AND MONTPORING REQi.IIREMBNTS <br />1. Effluent Limitatiotts <br />a. Active Minine Outfalls (wntinued) <br />ACTIVE iti1INING ALTERNATE LL11TI'ATIONS (continued) <br />Any dischazee or increase in the volume of a discharge caused by precipitation within any ?4-hour period <br />Qreater than the 10-year. 24-hour orecioitation event (or snowmelt of equivalent volume) may comply with <br />the following limitations -- subject to burden of proof requirements described in Pan I.B.I.d). <br />Parameter <br />30-Day Limitation <br />Avg. Daily h1ax. <br />Flow, MGD Report Repon <br />Total Suspended Solids, me/P Report Report <br />Total Iron, mg/P Repon Repon <br />Settleable Solids, mP/P Repon Report <br />pH, s.u. NIA 6.5-9.0 <br />Oi] and Grease, mg/P N/A 10 <br />Total Dissolved Solids, mg/P Repon Repon <br />CO River Basin Only <br />Total Phosphorus (as P), mg/P Report Repon <br />Dillon Reservoir and Upper Bear Creek Drainaaes ONLY <br />b. Post-Minine Outfalis <br />Post-mining ]itnitatiors may apply to outfalls servins surface areas which have bees returned to the requirtd <br />contour and on which revegetation (specifically, seedine or planing) work Las commenced. The permiuee <br />may request consideration for change from active mining ]imitations to post-tninine limitations when these <br />conditions have been met. <br />POST-~1L\rLNG PRL~LARY LIA'IITATIONS <br />Parameter Limitation <br />Flaw, MGD Repon <br />Settleable Solids, mP/P O.S <br />pH, s.u. 6.5-9.0 <br />Oil and Grease, mg/P IO <br />Tota] Dissolved Solids, ms/P Report <br />CO River Basin ONLY ` <br />Tota] Phosphorus (as P), me/P Repon <br />Dillon Reservoir and C ppei Bear Creek Drainages ONLY <br />See Part I.C. for Definitions <br />