Regulations last checked for updates: Jun 17, 2025

Title 40 - Protection of Environment last revised: Nov 17, 2025
All TitlesTitle 40Chapter IPart 82Subpart GAppendix Appendix R - Appendix R to Subpart G of Part 82—Substitutes Subject to Use Restrictions Listed in the December 20, 2011, Final Rule, Effective February 21, 2012, in the April 10, 2015, Final Rule, Effective May 11, 2015, in the April 28, 2023, Final Rule, Effective May 30, 2023, and in the June 13, 2024, Final Rule, Effective July 15, 2024
Collapse to view onlyAppendix Appendix R - Appendix R to Subpart G of Part 82—Substitutes Subject to Use Restrictions Listed in the December 20, 2011, Final Rule, Effective February 21, 2012, in the April 10, 2015, Final Rule, Effective May 11, 2015, in the April 28, 2023, Final Rule, Effective May 30, 2023, and in the June 13, 2024, Final Rule, Effective July 15, 2024
Table of Contents

authority: 42 U.S.C. 7414,7601,7671
source: 57 FR 33787, July 30, 1992, unless otherwise noted.
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