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: May 17, 2025
Title 40 - Protection of Environment last revised: Nov 17, 2025
All Titles
Title 40
Chapter I
Part 51
Subpart Z - Subpart Z—Provisions for Implementation of PM2.5 National Ambient Air Quality Standards
§ 51.1000 - Definitions.
§ 51.1001 - Applicability of part 51.
§ 51.1002 - Classifications and reclassifications.
§ 51.1003 - Attainment plan due dates and submission requirements.
§ 51.1004 - Attainment dates.
§ 51.1005 - Attainment date extensions.
§ 51.1006 - Optional PM2.5 precursor demonstrations
§ 51.1007 - [Reserved]
§ 51.1008 - Emissions inventory requirements.
§ 51.1009 - Moderate area attainment plan control strategy requirements.
§ 51.1010 - Serious area attainment plan control strategy requirements.
§ 51.1011 - Attainment demonstration and modeling requirements.
§ 51.1012 - Reasonable further progress (RFP) requirements.
§ 51.1013 - Quantitative milestone requirements.
§ 51.1014 - Contingency measure requirements.
§ 51.1015 - Clean data requirements.
§ 51.1016 - Continued applicability of the FIP and SIP requirements pertaining to interstate transport under CAA section 110(a)(2)(D)(i) and (ii) after revocation of the 1997 primary annual PM2.5 NAAQS.
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!