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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 74
Subpart A - Subpart A—Background and Summary
§ 74.1 - Purpose and scope.
§ 74.2 - Applicability.
§ 74.3 - Relationship to the Acid Rain program requirements.
§ 74.4 - Designated representative.
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