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Regulations last checked for updates: Jun 17, 2025
Title 40 - Protection of Environment last revised: Nov 17, 2025
All Titles
Title 40
Chapter I
Part 450 - PART 450—CONSTRUCTION AND DEVELOPMENT POINT SOURCE CATEGORY
Subpart A [§ 450.10 - § 450.11] - Subpart A—General Provisions
Subpart B [§ 450.21 - § 450.24] - Subpart B—Construction and Development Effluent Guidelines
authority:
33 U.S.C. 1311
,
1312
,
1314
,
1316
,
1341
,
1342
,
1361
source:
74 FR 63057, Dec. 1, 2009, unless otherwise noted.
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