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(~ • ,.~ <br />PART I <br />Page lc of 19 <br />Permit No. CO-0024562 <br />B <br />MONITORING REQUIREMENTS <br />1. Frequency and Sample Type <br />In order to obtain an indication of the probable compliance or <br />noncompliance with the effluent limitations specified in Section A, <br />the permittee shall monitor all effluent parameters at the following <br />frequencies. Such monitorigg will begin immediately and last for the <br />life of the permit unless otherwise noted. <br />(a) Discharge Point(s) 001 and 002: <br />Effluent Parameter <br />Flow, MGD <br />Measurement Frequency d/ <br />Total Suspended Solids, mg/1 <br />Oil and Grease, mg/1 <br />pH, s.u. <br />Oil and Grease, mg/1 <br />Potentially Dissolved Silver, mg/1 <br />Potentially Dissolved Zinc, iqg/1 <br />Potentially Dissolved Lead, mg/1 <br />Potentially Dissolved Copper, mg(1 <br />Whole Effluent Toxicity <br />- Acute <br />Whole Effluent Toxicity - Chronic <br />through June 30, 1995 <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />twice monthly <br />Quarterly <br />See Part I.B.4&5 <br />Semiannually <br />See Part I.B.11 <br />Sample Type e/ <br />Instantaneous <br />or Continuous <br />Grab <br />Visual/Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Composite <br />(b) Discharge Point(s) 001 and 002: (active mining or exploration) <br />Effluent Parameter <br />Flow, MGD <br />Measurement Frequency d/ <br />Total Suspended Solids, mg/1 <br />011 and Grease, mg/1 <br />pH, s.u. <br />Oil and Grease, mg/1 <br />Potentially Dissolved Silver, mg/1 <br />Potentially Dissolved Zinc, iqg/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 <br />- Acute <br />Whole Effluent Toxicity - Chronic <br />through June 30, 1995 <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />weekly <br />Quarterly <br />See Part I.B.4&5 <br />Semiannually <br />See Part I.B.11 <br />Sample Type e/ <br />Instantaneous <br />or Continuous <br />Grab <br />Visual/Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Composite <br />