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PART I <br /> Page 3 of 19 <br /> C. FOOTNOTES (Continued) <br /> f/ - In the event an oil sheen is observed, a grab sample shall be <br /> collected, analyzed, and reported. In addition, corrective action <br /> shall be taken immediately to mitigate the discharge of oil and grease. <br /> Salinity shall be measured as Total Dissolved Solids (TDS). Where <br /> based on a minimum of 5 samples, the permittee demonstrates, to the <br /> satisfaction of the Water Quality Control Division, that the level of <br /> TDS in the effluent can be calculated based upon the level of <br /> electrical conductivity, the permittee may measure and report salinity <br /> in terms of electricaal conductivity. <br /> h/ - Salinity shall be sampled on a monthly basis until six samples have <br /> been analyzed. A report of "No Discharge" shall not be counted as one <br /> of the six sampled. Thereafter, monitoring shall continue on a <br /> quarterly basis. Following submittal of initial six sets of monthly <br /> data, the Division shall determine whether the permittee is required to <br /> submit a report addressing salt removal in accordance with Regulations <br /> For Implementation of the Colorado River Salinity. Standards Through <br /> the NPDES Permit Program 3.10.0. If the salinity report is required, <br /> the Division shall so advise the permittee by letter and the report <br /> shall be submitted within 180 days. <br /> i/ - This parameter is subject to "Noncompliance Notification" requirements <br /> of Part II.A.3.b.v of this permit. <br /> j/ - Procedure for determining settleable solids is contained in 40 CFR <br /> 434.64. The method detection limit for measuring settleable solids <br /> under this part shall be 0.4 ml/l. <br /> k/ - Should a precipitation event occur which is greater than the 10-year, <br /> 24-hour event, the permittee shall submit rain gauge or other <br /> appropriate documentation in order for an exemption to be claimed. In <br /> leiu of such documentation, limitations contained in Part I.A.l(b), <br /> shall apply. Documentation shall be reported as an attachment to the <br /> Discharge Monitoring Report (DMR) for the appropriate period. <br /> l/ - When the most sensitive analytical method which complies with Part <br /> I.F.2 of the permit has a detection limit greater than the permit <br /> limit, the permittee shall report less than the detectable limit, as <br /> appropriate. Such reports shall not be considered as violations of the <br /> permit limit. <br /> m/ - Fecal colif orm bacteria average concentrations shall be determined by <br /> the geometric mean of all samples collected during a thirty (30) <br /> consecutive day period. The 7 day average shall be determined by the <br /> geometric mean of all samples taken during a seven (7) day period. <br /> Code: i - 17 Date: 9 - 84 <br /> Revised 10/86 <br />