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2.3.13 Landfill Gas Collection <br /> A LFG system was installed in 2001 as a corrective action against LFG <br /> migration and VOC impacts to groundwater. The LFG gas system <br /> comprises of: <br /> 1. LFG Extraction Wells <br /> 44 LFG extraction wells are currently installed in the landfill (Figure 1). <br /> Seven additional LFG extraction wells and a horizontal collector will be <br /> connected to the existing LFG system in the Closure Cap Extension <br /> Project. <br /> Each LFG extraction well has a monitoring port to measure the methane <br /> content and a control valve to adjust applied vacuum. Each well is adjusted <br /> based on the methane content at that well, considering the need to control <br /> offsite migration and minimize air introduction in the landfill. The LFG <br /> collection system is monitored and maintained monthly. <br /> 2. Flare Station. <br /> The LFG collection system's flare station includes a flare and two blowers <br /> that produce vacuum in the LFG extraction wells. A condensate destruction <br /> system is also installed at the flare station. The flare is operated in <br /> accordance with San Joaquin Valley Air Pollution Control District <br /> (SJVAPCD) permit# N-43632-1. <br /> 3.0 SUMMARY OF REPORTING REQUIREMENTS <br /> 3.1 LEACHATE <br /> ' There is no change in reporting requirements for leachate due to the extension of <br /> the closure cap. No leachate will be produced. <br /> 3.2 GROUNDWATER <br /> There is no change in reporting requirements for groundwater due to the extension <br /> of the closure cap. <br /> t <br /> ' Postclosure Maintenance Plan Addendum San Joaquin County <br /> Corral Hollow Sanitary Landfill Department of Public Works <br /> October 26,2012 3 Solid Waste Division <br />