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PART I <br />Page No. 5 <br />Permit No. COG-850000 <br />B. EFFLUENT LIMTI'ATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations <br />a. Active Mining Outfalls (continued) <br />• <br />ACTIVE MINING ALTERNATE LIMITATIONS (continued) <br />Any dischazge or increase in the volume of a dischazge caused by precipitation within any 24-hour period <br />greater than the 10-veaz. 24-hour orecipitation event (or snowmelt of equivalent volume) ~ comply with <br />the following limitations -subject to burden of proof requirements described in Part I.B.l.d). <br />-Parameter Lim itation <br />_ _ 30-Day Avg. Daily Max. <br />Flow, MGD Repor[ Report <br />Total Suspended Solids, mg/P Report Report <br />Total Iron, mg/P Repott Report <br />Settleable Solids, mP/P Report Report <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grease, mg/P N7A 10 <br />ToW Dissolved Solids, mg/P Report Report • <br />CO River Basin Only <br />Total Phosphorus (as P mg/P <br />Dillon Reservoir and pper Beaz Creek Drainages ONLY Report Report <br />b. Post-Minine Outfalls <br />Post-[Wining limitations may apply to outfalls serving surface azeas which have been rettuned to the required <br />contour and on which revegetation (specifically, seeding or planting) work has commenced. The permittee <br />may request consideration for change from active mining limitations to post-mining limitations when these <br />conditions have been met. <br />POST'-MINING PRIMARY LIl~IITATIONS <br /> <br />Parameter . . <br />LimttaUon <br />Flow, MGD Report <br />Settleable Solids, mP/P 0.5 <br />pH, s.u. 6.5-9.0 <br />Oil and Grease, mg/P 10 <br />Total Dissolved Solids, mg/P Report <br />CO River Basin ONLY <br />- <br />• <br />Total Phosphorus (as P), mg/P <br />Dillon Reservoir and C pper Beaz Creek Drainages ONLY Report <br />See Part I.C. for Definitions <br />