The Nuclear Regulatory Commission said that storing high-level radioactive waste above ground at Pacific Gas & Electric’s Diablo Canyon nuclear power plant “will not result in a significant effect on the human environment, even when potential terrorist attacks are considered.” Federal regulators issued the decision August 30. “The NRC’s conclusion contradicts significant factual evidence that the impacts of attacks would indeed be severe,” Jane Swanson, Mothers for Peace spokesperson, stated. The group sued the commission in the Ninth Circuit Court of Appeals. In June 2006, the court sided with Mothers for Peace and sent the issue back to federal regulators for reconsideration. Swanson called the decision a “mockery of federal environmental law.” The NRC stated that its supplemental assessment “considers the potential radiological impacts of terrorist acts,” and concludes that “the probability of a successful terrorist attack resulting in a significant radiation release is very low.”