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Fred Kaufman <br /> June 9, 1993 <br /> Page 2 <br /> Comment 3 : <br /> "What will be the depth of the extraction wells?" <br /> Response: <br /> The depth of the extraction wells will be the same as the depth of <br /> the waste at each location. <br /> Comment 4: <br /> "Will the gas movement equipment be capable of handling the maximum <br /> landfill gas generation rate?" <br /> Response: <br /> The system will be designed to handle the maximum landfill gas <br /> generation rate and condensate production. <br /> Comment 5: <br /> "How will individual extraction wells be monitored to insure proper <br /> functioning?" <br /> Response: <br /> Each extraction well will be checked periodically at the surface to <br /> ensure that the pipe leading to the control panel and the well head <br /> are intact. In addition, each well will have a monitoring port <br /> dedicated to the pipeline leading to the control panel . Flow rate <br /> will be checked periodically in the monitoring ports. <br /> Comment 6: <br /> "How will it be verified that sufficient landfill gas is being <br /> collected by the system?" <br /> Response: <br /> We will continue to monitor the perimeter gas monitoring network to <br /> determine the concentration of methane migrating off-site. If <br /> concentrations in the wells decrease to meet regulatory <br /> requirements, it will be verified that sufficient landfill gas is <br /> being collected. The final goal is to reduce methane <br /> concentrations at the perimeter wells to below 5% by volume. <br /> GK:WJ:vj <br /> R: IVIRGINIAIMEMOSIHL-GAS.FK <br /> LA 11471 <br />