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Landfill gas monitoring is the process by which gases that are collected or released from landfills are electronically monitored. Landfill gas may be measured as it escapes the landfill ("Surface Monitoring") or may be measured as it is collected and redirected to a power plant or flare ("Collection System Monitoring").
Because gases produced by landfills are both valuable and sometimes hazardous, monitoring techniques have been developed. Flame ionization detectors can be used to measure methane levels as well as total VOC levels. Surface monitoring and sub-surface monitoring as well as monitoring of the ambient air is carried out.
A landfill [a] is a site for the ... Landfill gas monitoring alerts workers to the presence of a build-up of gases to a harmful level. ... On and under surface fires ...
Landfills are the third-largest source of methane emissions in the United States, with municipal solid waste landfills representing 95 percent of this fraction. [15] [16] In the U.S., the number of landfill gas projects increased from 399 in 2005, to 594 in 2012 [17] according to the Environmental Protection Agency.
Bioreactor landfills are a relatively new technology. For the newly developed bioreactor landfills initial monitoring costs are higher to ensure that everything important is discovered and properly controlled. This includes gases, odours and seepage of leachate into the ground surface.
Landfill gas collection is typically accomplished through the installation of wells – vertically and/or horizontally – in the waste mass. Design heuristics for vertical wells call for about one well per acre of landfill surface, whereas horizontal wells are normally spaced about 50 to 200 feet apart on center. [9]
Subsurface water monitoring, leachate collection, and clay liners are commonly included in the design and construction of a waste landfill. To effectively serve the purpose of containing leachate in a landfill, a liner system must possess a number of physical properties.
The site was in operation from 1949 to 1987. In the 1960s the site was excavated in some areas to bedrock. According to a 1972 Inventory of clients serviced by the landfill conducted by the CT DEP [clarification needed], 107,000 short tons (97,000 t) of solid waste and 46 short tons (42 t) of liquid waste were disposed of per year at the Laurel Park Landfill. [1]