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• ART I <br />Page la of 19 <br />Permit No. CO-0024562 <br />A. TERMS AND CONDITIONS <br />1. Effluent Limitations <br />Beginning immediately and lasting through March 31, 1997, the permittee is <br />authorized to discharge from outfall serial numbers 001, the discharge of mine <br />drainage from the Carlton Tunnel bypassing the settling ponds, and 002, the <br />discharge of mine drainage from the Carlton Tunnel after flowing through a series <br />of four settling ponds and monitored adjacent to and upstream from Teller County <br />Road 88 prior to discharging to Fourmile Creek. <br />In accordance with the Water Quality Control Commission Regulations for Effluent <br />Limitations, Section 10.1.3, and State Discharge Permit System Regulations, <br />Section 6.9.2, 5 C.C.R. 1002-2, the permitted discharge shall not contain effluent <br />parameter concentrations which exceed the following limitations, discharge more <br />than the mass pollutant loadings specified below or exceed the specified flow <br />limitation. <br />Effluent Parameter <br />Discharee Limitations J <br />30-Day Avg ~ 7-Day Avg J Daily Max J <br />Flow, MGD 2.58 NA NA <br />Total Suspended Solids, mg/1 30 45 ~ NA <br />Potentially Dissolved Silver, mg/1 0.0008 NA 0.0212 <br />Potentially Dissolved Zinc, mg/1 0.54 NA 0.60 <br />Potentially Dissolved Lead, mg/1 0.030 NA 0.920 <br />Potentially Dissolved Copper, mg/1 0.059 NA 0.098 <br />Cyanide, Weak Acid <br />Dissociable, ug/1 NA NA Report <br />Whole Effluent Toxicity, Chronic <br />through March 31, 1995 NA NA Report <br />beginning April 1, 1995 NA NA See Paragraph Below <br />pH - standard units shall remain between 6.5 and 9.0 J. <br />Oil and Grease shall not exceed 10 mg/1 J nor shall there be a visible sheen; see <br />footnote J . <br />There shall be no discharge of floating solids. <br />Whole Effluent Toxicity - Chronic Lethality Limitation <br />Beginning April 1, 1995, there shall be no statistically significant difference in <br />lethality (at the 95X confidence level) between the control and any effluent <br />concentration less than or equal to 37X effluent. Such limitation shall apply as <br />a daily maximum. <br />See Part I.C. for Footnotes. <br />amended 01/06/93 effective 03/01/93 <br />amended <br />effective <br />