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PART I <br />Page la of 19 <br />Permit No. CO-0000213 <br />A. TFRMS AND CONDITIONS <br />1. Effluent Limitations (outfall 001 - Active Mining) <br />Beginning November 1, 1989 and lasting through September 30, 1994, the <br />permittee is authorized to discharge within the limitations specified <br />below, from outfall serial number 001, prior to mining with Tuttle <br />Draw, as shown is Figures 2 and 3. <br />• <br />Effluent Parameter <br />Flow, MGD <br />Total Suspended Solids, mg/1 <br />Total Iron, mg/1 <br />Salinity <br />Whole Effluent Tonicity, Acute <br />pH shall remain between 6.5 and 9.0 s.u. c/. <br />Discharge Limitations <br />Mazlmum Concentration <br />30-day avg. a/ <br />NA <br />35 <br />3.5 <br />NA <br />NA <br />Daily Maz. c/ <br />NA <br />70 <br />7.0 <br />NA <br />NA <br />011 and grease shall not ezceed 10 mg/1 c/ in any grab sample nor shall there <br />be a visible sheen. <br />2. Effluent Limitations (outfall 001) <br />Any discharge or increase in the volume of a discharge caused by <br />precipitation within any 24-hour period less than or equal to the <br />10-year, 24-hour precipitation event (or snowmelt of equivalent <br />volume) may comply with the following limitations subject Co burden of <br />proof requirements described in Part I.A.B. <br />Effluent Parameter Discharge Limitations <br />Mazimum Concentration <br />30-Day Average Daily Masimum c/ <br />Flow, MGD Report Report <br />Settleable Solids, ml/1 j/ NA 0.5 <br />Salinity NA Report <br />pH shall remain betwee^ 6.5 and 9.0 s.u. c/. <br />011 and grease shall not exceed 10 mg/1 c/ in any grab sample nor shall there <br />be a visible sheen. <br />• See part I. C, for Footnotes <br />Amended 7i25~^~ Effective 7/?5io0 <br />Code: i - 7 Date: 9 - 87 <br />