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PART 1 Page v Permit No. CO-0042161 B. MOI•fITORING REQUII2EMENTS 1. E'reguencv and Sample Tvpe hi order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified in Pan I.A.I., the permittee shall monitor all effluent parameters at the following frequencies. Such monitoring will begin immediately and last for the life of the permit unless otherwise noted. The results of such monitoring shall be reported on dte Dischazge Monitoring Report (See Pan I.B.2.). (.t) Outfal1001 Effluent Parameter Flow, MGD Total Suspended Solids, mg/Q Total Rectrverable Iron, mg/P Oil and Grease, mg/P pH, s.u.*" Total Dissolved Solids, mg/Q Dissolved Aluminum, mg/P Total Awnonia as N, mg/P Whole Effluent Toxicity, Chronic Measurement Freauencv Sample T~~pe Weekly Instantaneous or Continuous Monthly Grab Monthly Grab Weekly Visual Weekly Grab Quarterly Grab Montlily Grab Monthly Grab Qtarterly 3 Composites/Test* • 'ILe pe nnittee may collect two composite samples when discharge is imetmitten[, with samples collected on consecutive days of discharge. •• "ILe permittee shall also monitor pH m Fish Creek immediately above outtall fql and below oudall (pl at a point after mixing but prior to any other source enteriq; the creek. Qt) Clutfall002 Effluent Parameter Measurement Freauencv Sample Tvpe Flow, MGD Weekly Instantaneous or Continuous BODs, mg/P Monthly Grab Total Suspended Solids, mg/Q Monthly Grab Fecal Coliform, No./100 mP Monthly Grab (r) Point 3001 (influent) Imfluent Parameter Measurement Freauencv Sample Tvpe Flow, MGD Weekly Instantaneous or Continuous BCIDs, mC;/P Montlily Grab Self-monitoring sampling by the permittee for compliance with the monitoring requirements specified above shall be performed at the following locations: Outfall 001, prior to entering Fish Creek; Outfall 002, the point of dischazge at the effluent weir in the control building, prior to entering Emerald Spring (a spoils spring); Point 3001 (influent) samples shall be collected prior to entering the first aerated lagoon. Influent samples shall be collected at the specified frequencies r~:ttardless of whether a dischar¢e occurs durin¢ the applicable period. Instream pH samples described by ** shall be collected at the same time and at the same frequency as required for outfall OOI. If the pertnittee, using the approved analytical methods, monitors any pazameter more frequently than required by this permit, then the results of such monitoring shall be included in the calculation and reporting of the values required in dte Clischazge Monitoring Report Farm or other forms as required by the Division. Such increased frequency shall also be indicated. See Part Q.C. for Definitions. Amendment No. ]Issued Effective