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• <br />PART I <br />Page lb of 19 <br />Permit No.: CO-0027154 <br />A. TERMS AND CONDITIONS (Continued) <br />(Outfalls 002, 003, 004, 006, and 008) <br />Any discharge or increase is volume of a discharge caused by <br />precipitation within any 24-hour period greater than the 10-year, <br />24-hour event (or series of storms or snowmelt of equivalent volume) may <br />comply with the following limitations subject to burden of proof <br />requirements described in Part I.A.7. <br />Flow - (MGD) •- monitoring only per Part I.B.1. <br />Electrical Conductivity, micromhos/cm - monitoring only per Part I.B.1. <br />pH - (Standard Units) shall remain between 6.5 and 9.0 c/. <br />Oil and grease shall not exceed 10 mg/1 c/ in nay grab sample nor shall <br />there be a visible sheen. <br />Additional conditions-effective at all times: <br />There shall be no discharge of floating solids or visible foam in other <br />than trace amounts. The discharge shall not contain any sanitary <br />sewage or other pollutants not associated with active mining operations. <br />• <br />• <br />2. Effluent Limitations for Outfall 005 <br />Beginning immediately and lasting through June 30, 1991 the permittee <br />is authorized to discharge within the limitations specified below, from <br />outfall serial number 005. <br />Effluent Parameter <br />Flow - (MGD) <br />Total Suspended Solids (mg/1) <br />Total Recoverable Iron (mg/1) <br />Total Recoverable Copper (mg/1) <br />Total Recoverable Silver (mg/1)* <br />Total Recoverable Manganese (mg/1) <br />Total Recoverable Zinc (mg/1) <br />Electrical Conductivity, micromhos/cm <br />pH - (Standard Units) shall rem, <br />011 and grease shall not exceed <br />be a visible sheen. <br />*The detection limit For silver <br />See part I.C. for Footnotes <br />Cade: i - 8 Date: - 35 <br />Discharge Limitations <br />Maximum Concentration <br />30~ay avg, a/ <br />Report <br />35 <br />1.0 <br />0.022 <br />0.0001 <br />Report <br />0.05 <br />Report <br />Daily Max. c1 <br />Report <br />70 <br />2.V <br />0.04» <br />o.oar_ <br />Report <br />0. 1~) <br />Report <br />iin between 6.5 and 9.0 c/. <br />10 mg/1 c/ in any grab sample nor shall t5.'-e <br />is 0.0002 mg/1. <br />Amended 03/19/87 <br />Amended 10 27 8 Effective 12 /!' <br />Amended g/2g/90 Effective 3 __ <br />