An Environmental Protection Agency official defended a draft report that linked hydraulic fracturing to groundwater pollution in Pavillion, Wyo., amid criticism from natural gas industry trade groups, Encana and Wyoming lawmakers. EPA followed established sampling and analysis protocols in its study, said Jim Martin, the agency's regional administrator for Wyoming and surrounding states. "The investigation was subjected to the Agency's highest level [quality assurance] procedures. Audits of data quality and technical systems in the laboratory and field were conducted by an independent contractor and EPA QA manager," Martin said in his prepared testimony.
Published in Brief: