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Regulations last checked for updates: May 23, 2025
Title 40 - Protection of Environment last revised: Apr 23, 2028
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Title 40
Chapter I
Part 145
Subpart D - Subpart D—Program Approval, Revision and Withdrawal
§ 145.31 - Approval process.
§ 145.32 - Procedures for revision of State programs.
§ 145.33 - Criteria for withdrawal of State programs.
§ 145.34 - Procedures for withdrawal of State programs.
authority:
42 U.S.C. 300f
source:
48 FR 14202, Apr. 1, 1983, unless otherwise noted.
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