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l PART I Page le of 19 Permit No. CO-0032115 A. TERMS AND CONDTTIONS 4. Salinity Parameters In order to obtain an indication of the quantity of Salinity being discharged from the site, the pennittee shall monitor the wastewater effluent at the following frequency: Outfalls FYeauencv Sample 'Iy~e 001, 002, 003, DOS, 006, 008, 009, 010, Quarterly Grab 011, 012, 013, 014, 015, 016, 017 5. Best Management Practices - 001. 002 005 For the pH variance, as listed in Part I.A.1. to be in effect, the permittee must be taking all reasonable measures to reduce the pH, including the use of a Caz bubbler at the outfall(s). Documentation of such shall be submitted with the applicable OMR any time a pH level of over 9.0 s.u, is reported. The permittee may develop other appropriate measures to control pH, such as the use of appropriate algicides, aquatic life, etc. However, such measures in addition to or instead of the COZ bubbler must be approved by the Division via a pettni[ amendment prior [o their use. B. MONTIURING REQUIItFMEN15 1. Frequency and Sample Tvae In order to obtain an indication of the probable compliance or noncompliance with the effluent limitations specified in Part I.A.1, 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 the Discharge Monitoring Report (See Part I.B.3.) (a) Outfalls 008. 010 and 012 Effluent Parameter Flow, MGD l'otaL S«spended Solids, mg/P 'Total Iron, mg/X Settleable Solids, mQ/R Oil and Grease, mg/C pH, s.u. Measurement Freauencv Sample Tune Weekly Instantaneous or Contirnious Monthly Grab Monthly Grab Monthly Grab Weekly Visual Weekly Grab Amendment 2 Issued 03/15/94 Effective 05/01/94 Amendment 3 Issued 07/08/94 Effective 09/01/94 Amendment 4 Issued Effective See Part I.C. for Definitions.