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SPX CORPORATION ORDER R5-2019-0018 SPX MARLEY COOLING TECHNOLOGIES GROUNDWATER CLEANUP NPDES NO. CA0081787 sample obtained from Monitoring Location RSW-001, as identified in this Monitoring and Reporting Program. 3. Sample Volumes-Adequate sample volumes shall be collected to provide renewal water to complete the test in the event that the discharge is intermittent. 4. Test Species-The testing shall be conducted using the most sensitive species. The Discharger shall conduct chronic toxicity tests with the cladoceran, water flea, Ceriodaphnia dubia (survival and reproduction test), unless otherwise specified in writing by the Executive Officer. 5. Methods-The presence of chronic toxicity shall be estimated as specified in Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms, Fourth Edition, EPA/821-R-02-013, October 2002. 6. Reference Toxicant-As required by the SIP, all chronic toxicity tests shall be conducted with concurrent testing with a reference toxicant and shall be reported with the chronic toxicity test results. 7. Dilutions-For routine and compliance chronic toxicity monitoring, the chronic toxicity testing shall be performed using the dilution series identified in Table E-4, below. For TRE monitoring, the chronic toxicity testing shall be performed using the dilution series identified in Table E-4, below, unless an alternative dilution series is detailed in the submitted TRE Action Plan. A receiving water control or laboratory water control may be used as the diluent. Table E-4. Chronic Toxicity Testing Dilution Series Dilutions % Control Sample 100 T 75 1 50 25 1 12.5 • Effluent 100 75 50 25 12.5 0 • Control Water 0 25 50 75 87.5 100 Receiving water control or laboratory water control may be used as the diluent. 8. Test Failure-The Discharger must re-sample and re-test as soon as possible, but no later than fourteen (14) days after receiving notification of a test failure. A test failure is defined as follows: a. The reference toxicant test or the effluent test does not meet all test acceptability criteria as specified in the Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms, Fourth Edition, EPA/821- R-02-013, October 2002 (Method Manual), and its subsequent amendments or revisions; or b. The percent minimum significant difference (PMSD) measured for the test exceeds the upper PMSD bound variability criterion in the Method Manual. ATTACHMENT E— MONITORING AND REPORTING PROGRAM E-6