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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
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Title 21
Chapter I
Part 25
Subpart B - Subpart B—Agency Actions Requiring Environmental Consideration
§ 25.15 - General procedures.
§ 25.16 - Public health and safety emergencies.
§ 25.20 - Actions requiring preparation of an environmental assessment.
§ 25.21 - Extraordinary circumstances.
§ 25.22 - Actions requiring the preparation of an environmental impact statement.
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