Laserfiche WebLink
• <br />PART I <br />Page 3 of 19 <br />C. FOOTNOTES (Continued) <br />e/ - Definitions of Sample Type (Continued) <br />6. An "in-situ" measurement, for monitoring requirements, is defined <br />as a single reading, observation or measurement taken in the field <br />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 action <br />shall be taken immediately to mitigate the discharge of oil and <br />grease. <br />Salinity shall be measured as Total Dissolved Solids (IDS). 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 <br />of TDS in the effluent can be calculated based upon the level of <br />electrical conductivity, the permittee may measure and report <br />salinity 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 <br />one 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 14PDES 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" <br />requirements of Part II.A.3.b.v of this permit. <br />j/ - <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/1. <br />k/ - <br />In addition to monitoring the final discharge, influent samples <br />shall be taken and analyzed for this parameter at the same frequency <br />as required for this parameter in the discharge. <br />l/ - <br />Monitoring is required only when chlorine is used for disinfection. <br />m/ - <br />Monitoring is required only during periods of discharge. If "no <br />discharge" occurs, this shall be reported at the specified frequency. <br />• n/ - <br />Averages for fecal coliforms shall be determined by the geometric <br />mean of a minimum of three(3) samples taken during separate weeks in <br />a 30 -day period for the 30 -day average, and during separate days in <br />a 7 -day period for the 7 -day average. (minimum total of three(3) <br />samples) <br />Cndp- 1 <br />— 17 Dara• 9 — HG <br />