The purpose of this Council on Environmental Quality Memorandum is to ensure that all Federal agencies are actively considering the designation of Federal and non-federal cooperating agencies in the preparation of analyses and documentation required by the National Environmental Policy Act (NEPA), and to ensure that Federal agencies actively participate as cooperating agencies in other agency’s NEPA processes.

The section on reporting cooperating agencies was superseded by Reporting Cooperating Agencies in Implementing the Procedural Requirements of NEPA (2004).