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PART I <br />• Page 5 <br />Permit No <br />B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations (continued) <br />b) Post-Mining Outfall(s) (continued) <br />Effluent Parameter <br />COG-850000 <br />Discharge Limitation <br />Maximum Concentration <br />Daily Haximum J <br />Flow, MCD Report <br />pH, standard units (minimum-maximum) 6.5-9.0 <br />Oil and Grease, mg(1 (No visible sheen) 10 <br />Settleable Solids, ml/1 g/ 0.5 <br />Total Dissolved Solids, mg/1 (Colorado River Basin Only) Report <br />Total Phosphorus (as P), mg/1 Reparc <br />(Dillon Reservoir and Upper Bear Creek Drainages Only) <br />ALTERNATE LIMITATIONS <br />• Any discharge or increase in the volume of a discharge caused by <br />precipitation within any 24-hour period (treater than the Dear. <br />24-hour nrecioitation event (or snowmelt of equivalent volume) <br />may comply with the following limitations sub;ecc to burden of <br />proof requirements described in Part I.B.l.d). <br />Flow, MGD - monitoring only per Part I.S.2.b) <br />pH shall remain between 6.5 and 9.0 s.u. J . <br />Oil and grease shall not exceed 10 mg/1. J J <br />Total Dissolved Solids, mg/1 - monitoring only per Part I.B.2.b) <br />(Colorado River Basin Only) <br />Total Phosphorus (as P), mg/1 - monitoring only per Part I.B.2.b) <br />(Dillon Reservoir and Upper Bear Creek Drainages Only) <br />c) General Limitations - Active and Post-Mining Outfalls <br />1. There shall be no discharge of sanitary, waste waters from <br />toilets oz related facilities. <br />2. There shall be no discharge of floating solids or visible foam <br />in ocher than trace amounts. <br />3. No chemicals are to be added co the discharge unless <br />permission for the use of a specific chemical is granted by <br />the Division. <br />4. There shall be no land application of wastewater, other than <br />for dust control. <br />• See Part I.B.4. for Footnotes <br />