Senator Ben Cardin (D-MD) requested a comprehensive Government Accountability Office (GAO) study on several issues related to hydraulic fracturing, including its potential adverse impacts on water resources.  The request also asks GAO to examine the availability of natural gas for hydraulic fracturing, no doubt in reaction to Sunday's New York Times story questioning industry's production estimates (see our post from earlier today).

Senator Cardin chairs the Water and Wildlife Subcommittee of the Senate Environment and Public Works Committee and in April convened a hearing to examine the public health and environmental impacts of natural gas drilling.