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t <br />PART I <br />Page lb of 19 <br />Permit No. CO-0042161 <br />B. 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 monitoring will begin immediately and last for the <br />life of the permit unless otherwise noted. <br />(a) Discharge Point 001 <br />Effluent Parameter Measurement Frequency d/ Sample Type e/ <br />• <br />Flow, MGD <br />Total Suspended Solids, mg/1 <br />Total Recoverable Iron, mg/1 <br />Oil and Grease, mg/1 f/ <br />pH, s.u. <br />Total Dissolved Solids, mg/1 g/ <br />Dissolved Aluminum, mg/1 <br />Whole Effluent Toxicity, Acute <br />Whole Effluent Toxicity, Chronic <br />Weekly <br />Monthly <br />Monthly <br />Weekly <br />Weekly <br />Quarterly h/ <br />Monthly* <br />Quarterly <br />Semi-annually <br />Instantaneous <br />or Continuous <br />Grab <br />Grab <br />Visual or Grab <br />Grab <br />Grab <br />Grab <br />Grab <br />Composite <br />*Monitoring for this parameter is required only if chemical treatment, using a <br />compound containing aluminum, is applied. <br />Sampling by the permittee for compliance with the monitoring <br />requirements specified above shall be performed at the following <br />location(s): discharge point 001, as shown in Figure 2. <br />Monitoring by the Division for the purpose of compliance and/or <br />enforcement of the effluent limitations shall be performed as per <br />"Sample Type" specified above. <br />2. Reporting of Data <br />Reporting of the data gathered in compliance with Part I.B.1 shall be <br />on a quarterly basis. <br />See Part I.C. for other footnotes. <br />• Code: i - 3 Date: 1-84, revised 2-87, revised 12-88 <br />