We've noted before the problems with a U.S. EPA study purporting to link groundwater contamination in Pavillion, WY to frac operations (see here, e.g.). Apparently, U.S. EPA has noticed as well. From a recent news release: "The EPA, the State of Wyoming, and the Tribes recognize that further sampling of the deep monitoring wells drilled for the Agency’s groundwater study is important to clarify questions about the initial monitoring results. The EPA will partner with the State and the United States Geological Survey (USGS), in collaboration with the Tribes, to complete this sampling as soon as possible and will collaborate with the State and other stakeholders in designing the sampling methodology, the quality assurance plan, and other features of the next phase of testing."