The number of Superfund cases filed annually in US district courts decreased by almost 50 percent between 1994 and 2007 - the period for which data is available - according to the US Government Accountability Office (GAO).
The number of Superfund cases filed annually in US district courts decreased by almost 50 percent between 1994 and 2007 - the period for which data is available - according to the US Government Accountability Office (GAO).