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How should a site be monitored for off-site migration of landfill gas?

April 26, 2017Gas Landfill migration Off-Site site

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How should a site be monitored for off-site migration of landfill gas?

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All gas venting systems must be monitored at the site perimeter for off-site migration, usually around 10% of the Lower Explosive Limit (LEL) for methane. Monitoring is done with gas monitoring probes, consisting of small diameter perforated pipes located around the landfill at a minimum of 1000 feet on center.