# 40 C.F.R. § 52.1172 (2026): Approval status

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1172

## Section

- **Citation:** 40 C.F.R. § 52.1172 (2026)
- **Heading:** Approval status
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 52 / Subpart X / § 52.1172: § 52.1172   Approval status.

## Text

With the exceptions set forth in this subpart, the Administrator approves Michigan's plan for the attainment and maintenance of the National Ambient Air Quality Standards under section 110 of the Clean Air Act. Furthermore, the Administrator finds the plan satisfies all requirements of Part D, Title I of the Clean Air Act as amended in 1977, except as noted below. In addition, continued satisfaction of the requirements of Part D for the ozone portion of the SIP depends on the adoption and submittal of RACT requirements by July 1, 1980 for the sources covered by CTGs between January 1978 and January 1979 and adoption and submittal by each subsequent January of additional RACT requirements for sources covered by CTGs issued by the previous January. [45 FR 29801, May 6, 1980]

## Nearby sections

- [40 C.F.R. § 52.1170 (2026) § 52.1170   Identification of plan.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1170.md)
- [40 C.F.R. § 52.1171 (2026) § 52.1171   Classification of regions.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1171.md)
- [40 C.F.R. § 52.1172 (2026) § 52.1172   Approval status.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1172.md)
- [40 C.F.R. § 52.1173 (2026) § 52.1173   Control strategy: Particulates.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1173.md)
- [40 C.F.R. § 52.1174 (2026) § 52.1174   Control strategy: Ozone.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1174.md)
- [40 C.F.R. § 52.1175 (2026) § 52.1175   Compliance schedules.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1175.md)
- [40 C.F.R. § 52.1179 (2026) § 52.1179   Control strategy: Carbon monoxide.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1179.md)
- [40 C.F.R. § 52.1180 (2026) § 52.1180   Significant deterioration of air quality.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1180.md)
- [40 C.F.R. § 52.1181 (2026) § 52.1181   Interstate pollution.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1181.md)
- [40 C.F.R. § 52.1182 (2026) § 52.1182   State boards.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1182.md)
- [40 C.F.R. § 52.1183 (2026) § 52.1183   Visibility protection.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1183.md)
- [40 C.F.R. § 52.1184 (2026) § 52.1184   Small business stationary source technical and environmental compliance assistance program.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1184.md)
- [40 C.F.R. § 52.1185 (2026) § 52.1185   Control strategy: Carbon monoxide.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1185.md)
- [40 C.F.R. § 52.1186 (2026) § 52.1186   Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1186.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_1172. Check the current official text before relying on it. Not legal advice.