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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 electrical 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 <br /> to submit a report addressing salt removal in accordance with <br /> Regulations For Implementation of the Colorado River Salinity. <br /> Standards Through the NPDES Permit Program 3.10.0. If the salinity <br /> report is required, the Division shall so advise the permittee by <br /> letter and the report 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 /> - 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/ - "Active periods" shall be defined as times during which coal mining <br /> and/or mining-related activites are taking place on site. All other <br /> times shall be considered as "inactive periods". Should mining or <br /> related activities take place for one day or more per month, the <br /> entire month shall be considered an "active period" for monitoring <br /> purposes. <br /> Code: i - 17 Date: 1 - 84 <br /> 7-6-11 <br />