On May 28, 2015, the United States Senate Committee on Environment and Public Works requested a Government Accountability Office (GAO) investigation of EPA’s handling of “mega” Superfund sites.  Senators Inhofe and Rounds wrote to GAO that they are “concerned that EPA Regions may no longer be complying with policies, guidance, and procedures that were intended to improve the timeliness, cost-effectiveness, consistency, and quality of sediment site cleanups.”  Accordingly, they requested that “the GAO review EPA’s efforts to clean up sites with contaminated sediments, with a particular focus on “mega” sites where the expected cleanup costs will exceed $50 million.”  The GAO review began shortly after the request was made and a report is expected later this year.