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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 40
Chapter I
Part 227
Subpart A - Subpart A—General
§ 227.1 - Applicability.
§ 227.2 - Materials which satisfy the environmental impact criteria of subpart B.
§ 227.3 - Materials which do not satisfy the environmental impact criteria set forth in subpart B.
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