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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/) <br />Total Dissolved Solids, mg/I <br />Total Recoverable Iron, ug/I <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 />Effluent Limitations <br />Maximum Concentrations <br />30 -Day Averaee 7 -Day Averaee <br />Report NA <br />NA NA <br />NA NA <br />Report NA <br />Daily Max <br />Report <br />6.5 -9 <br />10 <br />Report <br />Report <br />Report <br />1,000 NA <br />Report <br />Report NA <br />Report <br />4.6 NA <br />Report <br />Report NA <br />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 precipitation 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 />Flow, MGD <br />pH, s.u. (minimum - maximum) <br />Oil and Grease, mg/I <br />Total Dissolved Solids, mg/I <br />Total Recoverable Iron, ug/I <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, m1/I <br />See Part I.C. for Definitions. <br />• <br />Maximum Concentrations <br />30 -Day Average <br />7 -Day Averaee <br />Daily Maximum <br />Report <br />NA <br />Report <br />NA <br />NA <br />6.5 -9 <br />NA <br />NA <br />10 <br />Report <br />NA <br />Report <br />Report <br />Report <br />1,000 <br />NA <br />Report <br />Report <br />NA <br />Report <br />4.6 <br />NA <br />Report <br />Report <br />NA <br />Report <br />• <br />