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MONITORING AND REPORT PROGRAM NO. R5-2003-XXXX 4 SPX CORPORATION MARLEY COOLING TOWER COMPANY SAN JOAQUIN COUNTY At a minimum the Discharger shall comply with the Monitoring Requirements for these constituents as outlined in Section 2.3 and 2.4 of the Policy for Implementation of Toxics Standards for Inland Surface Waters,Enclosed Bays, and Estuaries of California(SIP),adopted 2 March 2000 by the State Water Resources Control Board. For each priority pollutant use an analytical method from the SIP,Appendix 4 with a Minimum Level(NII.)below all applicable pollutant criteria. In accordance with Section 2.4.2 of the SIP;the Discharger is to instruct the laboratory analyzing samples for priority pollutants to establish calibration standards so that the ML is the lowest calibration standard. At no time is the Discharger to use analytical data derived from extrapolation beyond the lowest point of the calibration curve.Report all peaks identified by the EPA test methods. '- Concurrent with priority pollutant metals analyses. 3 Estimate of receiving water flow,recorded for each day of sample collection. Use nearby gauging station if available. - Field measurements. In conducting the receiving water sampling, a log shall be kept of the receiving water conditions throughout the reach bounded by Stations R-1 and R-2. Attention shall be given to the presence of: a. Floating or suspended matter e. Visible films, sheens or coatings b. Discoloration f. Fungi, slimes, or objectionable growths c. Bottom deposits g. Potential nuisance conditions d. Aquatic life Notes on receiving water conditions shall be summarized in the monitoring reports. THREE SPECIES CHRONIC TOXICITY MONITORING Chronic toxicity monitoring shall be conducted to determine whether the effluent is contributing toxicity to the Stockton Diverting Canal (SDC). The testing shall be conducted as specified in USEPA Method EPA/21-R-02-013, fourth edition, or later amendment. Chronic toxicity samples shall be collected at the discharge of the Marley Cooling Tower Company treatment system prior to its entering Stockton Diverting Canal. Grab samples shall be representative of the volume and quality of the discharge. Time of collection samples shall be recorded. The effluent tests must be conducted with concurrent reference toxicant tests. Both the reference toxicant and effluent test must meet all test acceptability criteria as specified in the chronic manual. If the test acceptability criteria are not achieved,then the Discharger must re-sample and re-test within 14 days. Chronic toxicity monitoring shall include the following: Species: Pimephales promelas, Ceriodaphnia dubia, and Selenastnmt capricornutum Frequency: Quarterly The Discharger shall conduct the chronic toxicity test using 100% effluent and 2 controls. If no toxicity is found in any of the tests during the first year of quarterly testing, the frequency of testing shall be reduced to annually. If toxicity is found in any of the effluent tests, the Discharger must immediately retest using the full sampling protocol of 5 dilutions listed below, and quarterly testing must be conducted for the duration of the permit.