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Continuous Monitoring of Structures for Landfill Gas Intrusion

Federal, State and local laws require that structures located on or near landfills and disposal sites be monitored for landfill gas migration to protect public health and safety from potential explosion hazards associated with methane gas.  Continuous Gas Monitoring Systems, when carefully planned, designed, installed, operated, and maintained by qualified consultants and contractors, can provide an effective and economic mitigation measure to indoor landfill gas migration hazards.  The Closed, Illegal and Abandoned (CIA) Site Program (http://www.ciwmb.ca.gov/LEACentral/CIA/) of the California Integrated Waste Management Board provides technical assistance to local governments in investigating former landfills and disposal sites in urban areas of the state.  The CIA program is working on “high‐priority” landfill investigations in many of the major population centers in California (Los Angeles, Orange County, San Diego, San Francisco Bay Area, etc.) and can provide field data, case studies, and lessons learned from investigations that may be helpful to other jurisdictions in managing their former landfills and disposal sites.