U.S. Code
Regulations
Constitution
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
x
Search
Search guide
U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 72
Subpart D - Subpart D—Acid Rain Compliance Plan and Compliance Options
§ 72.40 - General.
§ 72.41 - Phase I substitution plans.
§ 72.42 - Phase I extension plans.
§ 72.43 - Phase I reduced utilization plans.
§ 72.44 - Phase II repowering extensions.
Download the GovRegs app!
