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Part I <br />Permit No: CO-0000213 <br />Page 1 I <br />Outfall 009A-013A (Continued) <br />ALTERNATE LIMITATIONS <br />Any discharge or increase in volume of a discharge caused by precipitation within any 24-hour period heater than the <br />10-vear. 24-hour event (or series of storms or snowmeit of equivalent volume) may comply with the following <br />limitations subject to burden of proof requirements described in Part I.A3. <br />Effluent Parameter Effluent Limitations <br /> Maximum Concentrations <br /> 30-Dav Average 7-Dav Averaee Daily Maximum <br />Flow, MGD Report NA Report <br />Total Suspended Solids (TSS), mg/1 Report NA Report <br />pH, s.u. (minimum-maximum) NA NA 6.5-9 <br />Oil and Grease, mg/1 NA NA 10 <br />Total Iron, ug/1 Report NA Report <br />Total Mercury, ug/1 Report NA Report <br />Total Ammonia as N, mg/1 Report NA Report <br />Total Dissolved Solids, mg/1 Report NA Report <br />Settleable Solids, ml/1 Report NA Report <br />Whole Effluent Toxicity, Acute NA NA LC50 >100% <br />NIN 07 <br />Effluent Parameter <br />Effluent Limitations <br />aximum .Concentration <br />Total Arsenic, ugA <br />Potentially Dissolved Cadmium, ug/t <br />Potentially Dissolved Trivalent Chromium, ug/1 <br />Potentially Dissolved Copper, ug/1 <br />Potentially Dissolved Nickel, ug/1 <br />Potentially Dissolved Silver, ug/1 <br />Potentially Dissolved Zinc, ug/1 <br />NIN 08 <br />Effluent Parameter <br />Total Arsenic, ug/1 <br />Potentially Dissolved Cadmium, ug/1 <br />Potentially Dissolved Trivalent Chromium, ug/1 <br />Potentially Dissolved Copper, ug/1 <br />Potentially Dissolved Lead, ug/1 <br />Potentially Dissolved Manganese, ug/1 <br />Potenttally Dissolved Nickel, ug/1 <br />Potentially Dissolved Selenium, ug/l <br />Potentially Dissolved Silver, ug/1 <br />Potentially Dissolved Zinc, ug/1 <br />See Part I.C. for Definitions. <br />30-Day Average 7-Dav Average Daily Maximum <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Effluent Limitations <br />Maximum Concentrations <br />30-Dav Averaee 7-Dav Average Daily Maximum <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />Report NA Report <br />AMENDED: OCTOBER 242007 EFFECTIVE: DECEMBER 1, 2007 EXPIItATION: MARCIi 31 2012 <br />Attachment 2.05.3(3)-18-56 <br />