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PART I <br /> Page 5b of 20 <br /> Permit No.: CO-0000396 <br /> A. TERMS AND CONDITIONS (Continued) <br /> 5. Footnotes (Continued) <br /> e/ - Definitions of Sample Type (Continued) <br /> 6. An "in-situ" measurement, for monitoring requirements, is <br /> defined as a single reading, observation or measurement taken <br /> in the field at the point of discharge. <br /> f/ - In the event an oil sheen is observed, a grab sample shall be <br /> collected, analyzed, and reported. In addition, corrective <br /> action shall be taken immediately to mitigate the discharge of <br /> oil and grease. <br /> Salinity shall be measured as Total Dissolved Solids (TDS). <br /> Where based on a minimum of 5 samples, the permittee <br /> demonstrates, to the satisfaction of the Water Quality Control <br /> Division, that the level of TDS in the effluent can be calculated <br /> based upon the level of electrical conductivity, the permittee <br /> may measure and report salinity in terms of electrical <br /> • conductivity. <br /> h/ - Salinity shall be sampled on a monthly basis until six samples <br /> have been analyzed. A report of "No Discharge" shall not be <br /> counted as one of the six sampled. Thereafter, monitoring shall <br /> continue on a quarterly basis. Following submittal of initial <br /> six sets of monthly data, the Division shall determine whether <br /> the permittee is required to submit a report addressing salt <br /> removal in accordance with Regulations For Implementation of the <br /> Colorado River Salinity. Standards Through the NPDES Permit <br /> Program 3.10.0. If the salinity report is required, the Division <br /> shall so advise the permittee by letter and the report shall be <br /> submitted within 180 days. <br /> i/ - This parameter is subject to "Noncompliance Notification" <br /> requirements of Part II.A.3.b.v of this permit. <br /> - Procedure for determining settleable solids is contained in 40 <br /> CPR 434.64. The method detection limit for measuring settleable <br /> solids under this part shall be 0.4 ml/l. <br /> k/ - Fecal coliform bacteria 30 day average concentrations shall be <br /> determined by the geometric mean of a minimum of three (3) <br /> samples collected in separate calendar weeks during a thirty (30) <br /> consecutive day period with a minimum of 20 days occurring <br /> between the first and last sample. The 7 day average shall be <br /> 0 determined by the geometric mean of at least three (3) samples <br /> taken on separate days in a seven (7) day period. <br /> Amended <br /> II <br />