The Colorado Independent
November 3, 2011, David O. Williams

The U.S. Environmental Protection Agency (EPA) today released a final research plan for its ongoing and congressionally mandated study of the controversial but common oil and gas drilling procedure known as hydraulic fracturing, or “fracking.”...

http://coloradoindependent.com/104839/epa-issues-final-research-plan-for-studying-impact-of-fracking-on-drinking-water