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horizontally through adjoining soil. Migrating gas may go into the atmosphere, structures or underground vaults and cavities . Methane has become an environmental concern. Besides being a threat to public health and safety, methane is a greenhouse gas . Many think it may be a significant contributor to the destruction of the earth' s ozone layer. This in turn, causes global warming. Countries around the world have committed to controlling emissions of methane. Collecting and destroying methane in landfills is a specific objective of the United States ' CLIMATE CHANGE ACTION PLAN. An objective of the PLAN is to destroy LFG in prime movers and generating electricity. This plan is the United States ' response to the 1992 EARTH SUMMIT meeting in Rio de Janeiro, Brazil . The United States Environmental Protection Agency has a Global Warming Division devoted to encouraging development of LFG to electrical energy projects . THE PROJECT Extraction wells drilled into the landfill capture the LFG. A series of headers (pipes) connects the wells and brings the LFG to a central point at the engine-generator and flare station. A blower at the flare station applies a vacuum on the headers and wells. By applying a vacuum on the wells, LFG flows into the wells rather than migrating to the atmosphere. The engine will use all available gas with a sufficient heating value . If there is more gas than the engine' s fuel capacity, it will be routed to the flare and destroyed. When the engine is not operating, the flare burns the LFG. The flare and engine-generator will be located at the landfill . At this site will be the engine-generator set, electrical transformers, switch gear and other supporting equipment and vessels . The engine is a Caterpillar 3516 internal combustion gas engine rated at 950 KW. The Caterpillar engine is "Best Available Control Technology" (BACT) according to California air quality jrk:10-28-96 2 of 3