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PART <br />Page No. 3 <br />Permit No.: CO- 0000221 <br />PART 1 <br />A. DEFINITION OF EFFLUENT LIMITATIONS <br />1. Effluent Limitations <br />Beginning no later than the effective date of this permit and lasting through the expiration date of the permit, the permittee is <br />authorized to discharge from Outfalls 005, 006, 008, 009, 010, 011, 012, 013, 014, 015, 016, and 017. Also, monitoring <br />requirements for Outfalls MN05, MN 11, MN 13, and MN 14, have been added. These MN Outfalls correspond to the <br />locations of the original outfalls, Outfall 005 and MN05, Outfall 011 and MN I 1 and so forth. WET testing requirements are <br />limited under separate outfalls, as documented in the following tables. <br />In accordance with the Water Quality Control Commission Regulations for Effluent Limitations, Section 62.4, and the <br />Colorado Discharge Permit System Regulations, Section 61.8(2), 5 C.C.R. 1002 -61, the permitted discharge shall not contain <br />effluent parameter concentrations which exceed the following limitations specified below or exceed the specified flow <br />limitation. <br />a. Outfalls 005 and 011 <br />Effluent Parameter <br />Effluent Limitations <br />Maximum Concentrations <br />30 -Day Average <br />7 -Day Average <br />Daily Maximum <br />Flow, MGD Report <br />NA <br />Report <br />pH, s.u. (minimum - maximum) NA <br />NA <br />6.5 -9 <br />Oil and Grease, mg/I NA <br />NA <br />10 <br />Total Dissolved Solids, mg/I Report <br />NA <br />Report <br />41 Total Recoverable Iron, ug/I <br />Through 5/31/11 Report <br />NA <br />Report <br />Beginning 6/1/11 1,000 <br />NA <br />Report <br />Settleable Solids, ml /I Report <br />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 <br />less than or equal <br />to the 10 -year. 24 -hour precipitation event (or snowmelt of equivalent volume) may comply with the following <br />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 <br />within any 24 -hour period' <br />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 <br />Effluent Limitations <br />Maximum Concentrations <br />30 -Day Average <br />7 -Day Average <br />Daily Maximum <br />Flow, MGD Report <br />NA <br />Report <br />pH, s.u. (minimum- maximum) NA <br />NA <br />6.5 -9 <br />Oil and Grease, mg/I NA <br />NA <br />10 <br />Total Dissolved Solids, mg/I Report <br />NA <br />Report <br />Total Recoverable Iron, ug/I <br />Through 5/31/11 Report <br />NA <br />Report <br />Beginning 6/1/11 1000 <br />NA <br />Report <br />Settleable Solids, ml /I Report <br />NA <br />Report <br />