Regulations last checked for updates: May 13, 2025

Title 40 - Protection of Environment last revised: Nov 13, 2025
All TitlesTitle 40Chapter IPart 122Subpart DAppendix Appendix F - Appendix F to Part 122—Incorporated Places With Populations Greater Than 250,000 According to the 1990 Decennial Census by the Bureau of the Census
Collapse to view onlyAppendix Appendix F - Appendix F to Part 122—Incorporated Places With Populations Greater Than 250,000 According to the 1990 Decennial Census by the Bureau of the Census
Table of Contents

authority: The Clean Water Act, 33 U.S.C. 1251
source: 48 FR 14153, Apr. 1, 1983, unless otherwise noted.
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