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U.S Code last checked for updates: May 14, 2025
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Title 42
Chapter 85
Subchapter I
Part A [§ 7401 - § 7438] - Air Quality and Emission Limitations
Part B [§ 7450 - § 7459] - Ozone Protection
Part C [§ 7470 - § 7492] - Prevention of Significant Deterioration of Air Quality
Part D [§ 7501 - § 7515] - Plan Requirements for Nonattainment Areas
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