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Title 40

Displaying title 40, up to date as of 7/16/2026. Title 40 was last amended 7/16/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter BGrants and Other Federal Assistance33 – 49
Part 49Indian Country: Air Quality Planning and Management49.1 – 49.17810
Subpart ATribal Authority49.1 – 49.50
Subpart BGeneral Provisions49.51
§§ 49.51-49.100 [Reserved]
Subpart CGeneral Federal Implementation Plan Provisions49.101 – 49.173
Subpart DImplementation Plans for Tribes—Region I49.201 – 49.470
Subpart EImplementation Plans for Tribes—Region II49.471 – 49.680
Implementation Plan for the Saint Regis Mohawk Tribe49.471 – 49.680
§ 49.471Identification of plan.
§§ 49.472-49.680 [Reserved]
Subpart FImplementation Plans for Tribes—Region III49.681
§§ 49.681-49.710 [Reserved]
Subpart GImplementation Plans for Tribes—Region IV49.711
§§ 49.711-49.920 [Reserved]
Subpart HImplementation Plans for Tribes—Region V49.921
§§ 49.921-49.1970 [Reserved]
Subpart IImplementation Plans for Tribes—Region VI49.1971
§§ 49.1971-49.3920 [Reserved]
Subpart JImplementation Plans for Tribes—Region VII49.3921
§§ 49.3921-49.4160 [Reserved]
Subpart KImplementation Plans for Tribes—Region VIII49.4161 – 49.5510
Subpart LImplementation Plans for Tribes—Region IX49.5511 – 49.9860
Subpart MImplementation Plans for Tribes—Region X49.9861 – 49.17810