EPA Exaggerates Drilling Emissions

By:  Rebecca Terrell
09/29/2011
       
EPA Exaggerates Drilling Emissions

The U.S. Environmental Protection Agency (EPA) plans to tighten regulations on natural gas drilling based on grossly exaggerated estimates of greenhouse-gas emissions, according to new industry research.

In its report MisMeasuring Methane: Estimating Greenhouse Gas Emissions from Upstream Natural Gas Development, the independent energy analysis firm IHS Cambridge Energy Research Associates (CERA) reveals, "EPA's current methodology for estimating gas field methane emissions is not based on methane emitted during well completions, but paradoxically is based on a data sample of methane captured during well completions." (Emphasis in original.)

The agency's meager "data sample" is based on two slide presentations made at EPA-sponsored workshops, one in 2004 and one in 2007. CERA researchers explain that EPA recorded captured methane at a small sample of wells and now assumes every well in the country releases equivalent levels of methane without operators capturing any of it.

The U.S. Environmental Protection Agency (EPA) plans to tighten regulations on natural gas drilling based on grossly exaggerated estimates of greenhouse-gas emissions, according to new industry research.

In its report MisMeasuring Methane: Estimating Greenhouse Gas Emissions from Upstream Natural Gas Development, the independent energy analysis firm IHS Cambridge Energy Research Associates (CERA) reveals, "EPA's current methodology for estimating gas field methane emissions is not based on methane emitted during well completions, but paradoxically is based on a data sample of methane captured during well completions." (Emphasis in original.)

The agency's meager "data sample" is based on two slide presentations made at EPA-sponsored workshops, one in 2004 and one in 2007. CERA researchers explain that EPA recorded captured methane at a small sample of wells and now assumes every well in the country releases equivalent levels of methane without operators capturing any of it.

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