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PART <br />Page No. 3 <br />Permit No. CO-0000132 <br /> <br />PART 1 <br />A. DEFINITION OF EFFLUENT LLrvHTAT1ON5 <br />L Effluent Limitations <br />Beginning no later than the effective date of this permit and lasting through October 31, 2001, [he permittee is authorized <br />[o discharge from outfalls 007, 010, O12, 013 and 014 -the surface runoff outfalls: outfall OI 1 -the Sanborn Creek Mine <br />mine water outfall; and outfall 015 -the Elk Creek Mine mine water outfall; to [he North Fork of [he Gunnison Rtver, <br />Hubbard Creek, Sanborn Creek and Elk Creek. <br />In accordance with the Colorado Water Quality Control Commission Regulations for Effluent Limitations, Section 62.4 (5 <br />CCR 1002-62), and the Colorado Discharge Permit System Regulations, Section 61.8(2), (5 CCR 1002-61), the permitted <br />dtscharge shall not contain effluent parameter concentrations which exceed the following limitations specified below or <br />exceed the flow limitation, where specified. <br />(a) Outfalls 007, 010, 012. 013 and 014 <br />Effluent Parameter <br />Discharee Limitations <br />30-Dav Ave Daily Max <br />Flow, MGD Report Report <br />Total Suspended Solids, mg/P 35 70 <br />Total Iron, mg/P <br />• Outfalls 007, O10 3.5 7.0 <br />Outfalls 012, 013, 014 3.0 6.0 <br />Settleable Solids, mP/P N/A Report <br />Oil and Grease, mg/P N/A 10 <br />pH, s.u. (minimum-maximum) N/A 6.5-9.0 <br />ALTERNATE L~IITATIONS <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hour period less than or <br />equal to the l0-vear, 24-hour orecioita[ion event (or snowmelt of equivalent volume) may comply with the following <br />limitations -subject to burden of proof requirements described in Part I.A.3. <br />Efluent Parameter Discharee Limitations <br /> 30-Dav Ave Daily Max <br />Flow, MGD Report Repon <br />Total Suspended Solids, mg/P Report Report <br />Total (ron, mg/P Report Report <br />Settleable Solids, mP/P N/A 0.5 <br />Oil and Grease, mg/Q N/A IO <br />pH, s.u. (minimum-maxtmum) N/A 6.i-9.0 <br />See Part I.C. for Uefini[ions. <br />• Amendment No. I Issued APRIL 17 1997 Effective JUN l 1997 <br />Amendment No. 2 Issued DEC 28 1998 Effective FEB 11999 <br />Amendment No. 6 Issued ~?_~ Effective ` <br />~r ~ ZZUU ~ ~ <br />