REGULATIONS
Rulings
AD/CVD
Notices
HTSUS
U.S. Code
Regs
More
Ports
About
Updates
Apps
Larger font
Smaller font
SEARCH
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
Regulations last checked for updates: Jan 11, 2026
Title 40 - Protection of Environment last revised: Dec 31, 2026
All Titles
Title 40
Chapter I
Part 51
Subpart L - Subpart L—Legal Authority
§ 51.230 - Requirements for all plans.
§ 51.231 - Identification of legal authority.
§ 51.232 - Assignment of legal authority to local agencies.
authority:
23 U.S.C. 101
;
42 U.S.C. 7401-7671q.
source:
36 FR 22398, Nov. 25, 1971, unless otherwise noted.
.list_box li,p,.cm-search-info,.cm-search-detail,.abt span,.expand-collapse_top
Get the CustomsMobile app!