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PART I <br />Page No. 4 <br />Permit No.: CO-0000221 <br />b. Outfall 006 <br />Effluent Parameter <br />Flow, MGD <br />pH, s.u. (minimum-maximum) <br />Oil and Grease, mg/1 <br />Total Dissolved Solids, mg/I <br />Total Recoverable Iron, ug/1 <br />Until 5/31/11 <br />Beginning 6/1/11 <br />Potentially Dissolved Manganese, ug/1 <br />Potentially Dissolved Selenium ug/I <br />Settleable Solids, ml/I <br />Effluent Limitations <br />Maximum Concentrations <br />30-Day Average 7-Day Average <br />Report NA <br />NA NA <br />NA NA <br />Report NA <br />Daily Maximum <br />Report <br />6.5-9 <br />10 <br />Report <br />Report Report <br />1,000 NA Report <br />Report NA Report <br />4.6 NA Report <br />Report NA 0.5 <br />ALTERNATE LIMITATIONS <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hour period less than or equal <br />to the 10-year, 24-hour arecipitation event (or snowmelt of equivalent volume) may comply with the following limitations <br />subject to burden of proof requirements described in Part I.A.3. <br />Effluent Parameters and Limitations Same as Above <br />ALTERNATE LIMITATIONS <br />Any discharge or increase in volume of a discharge caused by precipitation within any 24-hour period greater than the 10- <br />year, 24-hour event (or series of storms or snowmelt of equivalent volume) may comply with the following limitations <br />subject to burden of proof requirements described in Part I.A.3. <br />Effluent Parameter Effluent Limitations <br />M Concentrations <br />Flow, MGD <br />pH, s.u. (minimum-maximum) <br />Oil and Grease, mg/I <br />Total Dissolved Solids, mg11 <br />Total Recoverable Iron, ug/1 <br />Until 5/31/11 <br />Beginning 6/1/11 <br />Potentially Dissolved Manganese, ug/I <br />Potentially Dissolved Selenium ug/I <br />Settleable Solids, ml/1 <br />See Part I.C. for Definitions. <br /> <br />30-Day Average ax mum <br />7-Day Average <br />Daily Maximum <br />Report NA Report <br />NA NA 6.5-9 <br />NA NA 10 <br />Report NA Report <br />Report Report <br />1,000 NA Report <br />Report NA Report <br />4.6 NA Report <br />Report NA Report <br />L_J <br />0 <br />•