Groundwater impacts asociated with landfill gas migration at municipal solid wastel landfill sites

摘要

Many older municipal solid waste (MSW) landfills are unlined and subsequently have become a soure of local groundwater contamination. Hoever, the adverse impact on the groundwater quality at uch sites is not necessarily limited to that caused by leachate contamination of the underlying aquifer but also may include the effects of landfill gas (LFG) migration. Abosrption of certain LFG components, particularly volatile organic compounds (VOCs), may occur at offsite locations when a LF excursion fornt migrates into adjacent sils. When LFG management systems are installed at such sites, this problem is often eliminated.