CEQ publishes surveys on NEPA litigation on an annual basis. These surveys identify the number of cases involving a NEPA based cause of action, Federal agencies that were identified as a lead defendant, general information on plaintiffs, general information on why litigation was pursued, and the outcomes of the cases decided during the year.
Each year, Federal agencies conduct hundreds of EISs, tens of thousands of EAs and hundreds of thousands of CEs. The amount of litigation on these NEPA analyses is comparatively small. Since 2001, fewer than 175 NEPA cases were filed each year - with less than 100 filed in 2007, 2009, 2010, and 2011.
The annual surveys are provided below.