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 A - Subpart A—Air Emissions Reporting Requirements
GENERAL INFORMATION FOR INVENTORY PREPARERS
§ 51.1 - Who is responsible for actions described in this subpart?
§ 51.5 - What tools are available to help prepare and report emissions data?
§ 51.10 - [Reserved]
SPECIFIC REPORTING REQUIREMENTS
§ 51.15 - What data does my state need to report to EPA?
§ 51.20 - What are the emission thresholds that separate point and nonpoint sources?
§ 51.25 - What geographic area must my state's inventory cover?
§ 51.30 - When does my state report which emissions data to EPA?
§ 51.35 - How can my state equalize the emission inventory effort from year to year?
§ 51.40 - In what form and format should my state report the data to EPA?
§ 51.45 - Where should my state report the data?
§ 51.50 - What definitions apply to this subpart?
Appendix Appendix A - Appendix A to Subpart A of Part 51—Tables
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!