CEQ provides guidance to Federal agencies to assist in implementation of NEPA. Below is a list of CEQ’s most recent and active guidance.
Archived guidance and memos are also available.
Memorandum for Heads of Departments and Agencies: Emergencies and NEPA Guidance | January 21, 2026
Memorandum for Heads of Departments and Agencies: Implementation of the National Environmental Policy Act | September 29, 2025
Memorandum for Heads of Departments and Agencies: Implementation of the National Environmental Policy Act | February 19, 2025
Memorandum for Heads of Departments and Agencies: Notifications for Actions with Potential Transboundary Effects in Canada | January 15, 2025
CEQ and OMB Memorandum on Environmental Collaboration and Conflict Resolution | September 7, 2012
Memorandum for Heads of Departments and Agencies: Guidance on Unique Identification Numbers for NEPA Documents | August 6, 2024
Guidance on the Applicability of E.O. 13807 to Responsible Entities Assuming Department of Housing and Urban Development Review Responsibilities | June 28, 2019
Guidance on the Applicability of E.O. 13807 to States with NEPA Assignment Authority Under the Surface Transportation Project Delivery Program | February 26, 2019