The U.S. Environmental Protection Agency (EPA) is responsible for receiving and reviewing EISs prepared by the Federal agencies. EPA's NEPA website provides resources on the NEPA process, EPA's role, and EIS filing guidance, and EPA’s EIS filing database. EPA publishes a weekly notice of availability in the Federal Register that lists each EIS it has received during the previous week.
EPA's searchable EIS Database offers:
- Information on all EISs filed since 1987
- EPA comment letters on EISs since 2001
- PDF files of most EISs filed since October 2012
EISs issued earlier than October 2012 may be located through a general search or by searching:
- Federal agency websites.
- State and local websites: Several states and localities including - California, Massachusetts, Minnesota, New York City, and Washington - maintain a collection of state and local environmental impact assessment documents, which may include NEPA documents.
- Electronic library platforms: The Northwestern University Transportation Library, for example, has a collection of most EISs issued since 1970. Northwestern partnered with Google and HathiTrust to digitize and provide online access to some of the EISs in their collection.