25 Apr '11, 11pm

EPA releases new greenhouse gas inventory for natural gas production operations

The U.S. Environmental Protection Agency (EPA) just released its "Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2009." One of the categories reviewed is "Natural Gas Systems," which includes hundreds of thousands of wells, hundreds of processing facilities, and over a million miles of transmission and distribution pipelines. Among EPA's findings: Natural gas systems remained the largest U.S. anthropogenic source category of methane in 2009. Their methane emissions increased 4 percent from 2008 to 2009 due to an increase in production and production wells. Emissions from field production accounted for approximately 59 percent of methane emissions and about 34 percent of non-combustion carbon dioxide emissions from the natural gas systems category in 2009. Estimates are greater than previously thought for emissions from three sources: gas well cleanups, condensa...

Full article: http://switchboard.nrdc.org/blogs/amall/epa_releases_new_...

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