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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 51 - Requirements for Preparation, Adoption, and Submittal of Implementation Plans |
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Subpart X - Provisions for Implementation of 8-hour Ozone National Ambient Air Quality Standard |
§ 51.919 - Applicability.
Latest version.
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§ 51.919 Applicability.
As of April 6, 2015, the provisions of subpart AA shall replace the provisions of subpart X, §§ 51.900 to 51.918, which will cease to apply, with the exception of the attainment date extension provisions of § 51.907 for the anti-backsliding purposes of § 51.1105(d)(2).
[80 FR 12312, Mar. 6, 2015]