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~~ • ,~,' • <br />PART I <br />Page lb of 19 <br />Permit No. CO-0024562 <br />A. TERMS AND CONDITIONS <br />1. Effluent Limitations (continued) <br />In the event of any exploration or other mining activity taking place <br />in the Carlton Tunnel or at a level underground that requires active <br />pumping of water out of the Carlton Tunnel, the permittee must notify <br />the Division at least 45 days prior to such activity commencing or <br />ceasigg. During such time that such activity occurs, the following <br />limits apply at discharge points 001 and 002 from the first day of the <br />month that the activity begins through the last day of the month that <br />the activity is halted. <br />Effluent Parameter <br />Discharge Limitations <br />30-Day Avg a/ 7-Day Avg b/ Daily Max c/ <br />Flow, MGD <br />Total Suspended Solids, mg/1 <br />Potentially Dissolved Silver, mg/1 <br />Potentially Dissolved Zinc, mg/1 <br />Potentially Dissolved Lead, mg/1 <br />Potentially Dissolved Copper, mg/1 <br />Potentially Dissolved Cadmium, mg/1 <br />Total Mercury, mg/1 <br />Whole Effluent Toxicity, Acute <br />through March 31, 1995 <br />beginning Apr11 1, 1995 <br />Whole Effluent Toxicity, Chronic <br />through June 30, 1995 <br />3.76 NA NA <br />20 30 NA <br />0.0006 NA 0.017 <br />0.105 NA 0.880 <br />0.024 NA 0.741 <br />0.048 NA 0.079 <br />0.0039 NA 0.020 <br />0.001 NA 0.002 <br />NA NA Report <br />NA NA 50%/IWC=46% o/ <br />NA NA Report <br />pH - standard units shall remain between 6.5 and 9.0 c/. <br />Oil and Grease shall not exceed 10 mg/1 c/ nor shall there be a visible sheen; <br />see footnote t/. <br />There shall be no discharge of floating solids. <br />See Part I.C. for Footnotes. <br />