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Disposal <br /> Leachate is applied to the waste surfaces or travel surfaces within Module 1 in accordance with the <br /> WDR. Leachate is either pumped directly from the sump to the active face, or pumped to the <br /> storage tank from which it is removed by water truck to Module 1. At no time was leachate <br /> returned to Module"I". <br /> Leachate System Monitoring and Maintenance <br /> The flow rate provided by the sump pump is tested monthly. A decrease in pumping rate will <br /> indicate the need to clean a filter or to investigate pump wear. Leachate production rate is greater <br /> in the late winter and spring, compared to summer and autumn, because little or no rain falls on <br /> the site from April to November of each year. The LCRS includes pipe risers at the end of each <br /> leachate lateral to enable video camera inspection of key portions of the pipe network. The <br /> moderate pipe bends of the risers allow cameras to be pushed several hundred feet into the <br /> network to record pipe conditions and depth of flows in the LCRS network. A wire rope is <br /> installed in each leachate lateral pipe to enable the pulling of a camera through the entire length of <br /> the risers. <br /> HISTORICAL TIME SERIES PLOTS <br /> Constituents not detected are plotted at a value of half their respective detection limits in the <br /> Historical Time Series Plots (Appendix F). Outliers were included in the plots as directed by <br /> RWQCB staff. <br /> PROGRESS OF EVAPOTRANSPIRATION COVER VEGETATION <br /> The evapotranspiration (ET) cover soil in areas without sufficient growth were amended, fertilized <br /> and reseeded in December 2008. Growth in the spring was successful (Photo 1). Weeds were <br /> pulled in early May 2009 to reduce intrusion of wind-blown seeds into the preferred species <br /> (Photo 2). <br /> In June 2009, areas that did not require seeding showed growth to between three and four feet <br /> high (Photo 3). The areas seeded in December 2008 show vegetative growth between two and <br /> three feet in height (Photo 4). Most species have died or gone dormant in the early summer <br /> weather, but some species continue to be active (Photo 5). <br /> Foothill Sanitary Landfill 11 Department of Public Works/Solid Waste <br /> I"Semester 2009 Groundwater Monitoring County of San Joaquin—July 31,2009 <br />