Last Friday, the Environmental Protection Agency (EPA) agreed to dismiss its 15-month long groundwater contamination case against Texas natural gas operator Range Resources Corporation (RRC). The dismissal of the federal lawsuit is the latest blow to EPA’s aggressive regulatory agenda, coming after a slew of court decisions unfavorable to the agency’s position. It also sheds a light on flaws with the methodology EPA employs in evaluating the link between natural gas wells and hydrocarbons detected in groundwater resources.