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Regulations last checked for updates: May 14, 2025
Title 40 - Protection of Environment last revised: Apr 14, 2028
All Titles
Title 40
Chapter I
Part 281
Subpart E - Subpart E—Approval Procedures
§ 281.50 - Approval procedures for state programs.
§ 281.51 - Revision of approved state programs.
authority:
42 U.S.C. 6912
,
6991
,
6991
,
6991
,
6991
,
6991
source:
80 FR 41677, July 15, 2015, unless otherwise noted.
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