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 12, 2026
Title 40 - Protection of Environment last revised: Dec 31, 2026
All Titles
Title 40
Chapter I
Part 423
Appendix Appendix A - Appendix A to Part 423—126 Priority Pollutants
Collapse to view onlyAppendix Appendix A - Appendix A to Part 423—126 Priority Pollutants
Table of Contents
authority:
33 U.S.C. 1251
source:
47 FR 52304, Nov. 19, 1982, unless otherwise noted.
.list_box li,p,.cm-search-info,.cm-search-detail,.abt span,.expand-collapse_top
Get the CustomsMobile app!