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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 16, 2025
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Title 45
Chapter VI
Part 640 - PART 640—COMPLIANCE WITH THE NATIONAL ENVIRONMENTAL POLICY ACT
§ 640.1 - Purpose.
§ 640.2 - Committee on Environmental Matters.
§ 640.3 - Actions requiring an environmental assessment and categorical exclusions.
§ 640.4 - Responsibilities and procedures for preparation of an environmental assessment.
§ 640.5 - Responsibilities and procedures for preparation of an environmental impact statement.
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