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: Feb 21, 2025
Title 40 - Protection of Environment last revised: Nov 21, 2025
All Titles
Title 40
Chapter I
Part 81
Subpart A - Subpart A—Meaning of Terms
§ 81.1 - Definitions.
authority:
42 U.S.C. 7401
,
source:
36 FR 22421, 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!