Laserfiche WebLink
prevents overtopping of the tank. However,the secondary containment will retain any leachate in case of <br /> failure of those controls. <br /> Leachate System Monitoring and Maintenance <br /> The flow rate provided by the sump pump is tested at least monthly. If no other causes are apparent,then a <br /> decrease in pumping rate will indicate the need to clean a filter or to investigate pump wear. <br /> Leachate production rate is greater in the late winter and spring, compared to summer and autumn,because <br /> little or no rain falls on the site from April to November of each year. <br /> The secondary leachate sump is monitored monthly for the removal of LFG condensate Landfill Gas <br /> Condensate Removal from Area 1 Secondary Sump <br /> The pump permanently installed in the secondary sump under Area 1 operates once three days per week, <br /> pumping liquid, if any, from the secondary sump into the primary sump. Once started, the pump operates <br /> until pump protection circuits stop pumping due to insufficient liquid. A meter is provided to monitor the <br /> liquid removed. <br /> The depth of liquid in the secondary sump is also monitored monthly using by a bubbler tube installed into <br /> the sump. Measurements indicate that the pump is maintaining the liquid level at the minimum level that <br /> allows the pump to remove liquid. <br /> HISTORICAL TIME SERIES PLOTS <br /> Historical Time Series Plots are included with this report on CD. Note that constituents that are not detected <br /> are plotted at a value of half their respective detection limits. Outliers were included in all plots as directed <br /> by RWQCB staff. <br /> PROGRESS OF EVAPOTRANSPIRATION COVER— FINAL REPORT <br /> The ET cover was established in December 2008 when the soil of much of the top deck area was amended, <br /> fertilized and reseeded. The cover vegetation continues to flourish(Photos 1 and 2). Five years monitoring <br /> was concluded at the end of the 2012/13 rain year. <br /> Results of monitoring indicate that the ET cover is successful. A final report documenting the success of the <br /> cover, dated August 30, 2013 was transmitted to RWQCB and CDRRR staff <br /> The surfaces of the landfill, including the ET cover area, are grazed annually to facilitate inspection by the <br /> LEA. <br /> Foothill Sanitary Landfill 11 Department of Public Works/Solid Waste <br /> 1�Semester 2014 Groundwater Monitoring County of San Joaquin—July 31,2014 <br />