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Leachate System Testing <br /> Testing the leachate system consists of monitoring the pumping rate of each sump pump. Leachate <br /> pumps that are operating at the rate consistent with past performance are considered to be operating <br /> normally. The in-line filters at the pump intakes are replaced every one to two years when a diminished <br /> flow is observed. Flow rate is calculated by the operator while observing the flow meter. Exposed <br /> leachate pipes are inspected for damage or disturbance once a month. <br /> HISTORICAL TIME SERIES PLOTS <br /> Constituents not detected are plotted at a value of half their respective detection limits in the Historical <br /> Time Series Plots (Appendix F). Note that Outliers were included in the plots as directed by RWQCB <br /> staff. <br /> North County RC&SL Public Works/Solid Waste <br /> 15`Semester 2012 Groundwater Monitoring 12 County of San Joaquin—July 26,2012 <br />