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MONITORING AND REPORTOG PROGRAM NO.R5-2002-XXXX • 4 <br /> MARLEY COOLING TOWER COMPANY <br /> SAN JOAQUIN COUNTY <br /> At a minimum the Discharger shall comply with the Monitoring Requirements for these constituents as <br /> outlined in Section 2.3 and 2.4 of the Policy for Implementation of Toxics Standards for Inland Surface <br /> Waters,Enclosed Bays,and Estuaries of California(SIP),adopted 2 March 2000 by the State Water <br /> Resources Control Board. For each priority pollutant use an analytical method from the SIP,Appendix 4 <br /> with a Minimum Level(ML)below all applicable pollutant criteria. In accordance with Section 2.4.2 of the <br /> SIP,the Discharger is to instruct the laboratory analyzing samples for priority pollutants to establish <br /> calibration standards so that the ML is the lowest calibration standard. At no time is the Discharger to use <br /> analytical data derived from extrapolation beyond the lowest point of the calibration curve.Report all peaks <br /> identified by the EPA test methods. <br /> Z Concurrent withriori <br /> s p ty pollutant metals analyses. <br /> Estimate of receiving water flow,recorded for each day of sample collection. Use nearby gauging station if <br /> available. <br /> ° Field measurements. <br /> In conducting the receiving water sampling, a log shall be kept of the receiving water conditions <br /> throughout the reach bounded by Stations R-1 and R-2. Attention shall be given to the presence of: <br /> a. Floating or suspended matter e. Visible films, sheens or coatings <br /> b. Discoloration f. Fungi, slimes, or objectionable growths <br /> c. Bottom deposits g. Potential nuisance conditions <br /> d. Aquatic life <br /> Notes on receiving water conditions shall be summarized in the monitoring reports. <br /> THREE SPECIES CHRONIC TOXICITY MONITORING <br /> Chronic toxicity monitoring shall be conducted to determine whether the effluent is contributing toxicity <br /> to the Stockton Diverting Canal (SDC). The testing shall be conducted as specified in EPA 600/4- <br /> 91/002. Chronic toxicity samples shall be collected at the discharge of the Marley Cooling Tower <br /> Company treatment system prior to its entering Stockton Diverting Canal. Grab samples shall be <br /> representative of the volume and quality of the discharge. Time of collection samples shall be recorded. <br /> The effluent tests must be conducted with concurrent reference toxicant tests. Both the reference <br /> toxicant and effluent test must meet all test acceptability criteria as specified in the chronic manual. If <br /> the test acceptability criteria are not achieved, then the Discharger must re-sample and re-test within 14 <br /> days. Chronic toxicity monitoring shall include the following: <br /> Species: Pimephales promelas, Ceriodaphnia dubia, and Selenastrum capricornutum <br /> Frequency: Quarterly <br /> The Discharger shall conduct the chronic toxicity test using 100% effluent and 2 controls. If no toxicity <br /> is found in any of the tests during the first year of quarterly testing, the frequency of testing shall be <br /> reduced to annually. If toxicity is found in any of the effluent tests, the Discharger must immediately <br /> retest using the full sampling protocol of 5 dilutions listed below, and quarterly testing must be <br /> conducted for the duration of the permit. <br />