# 40 C.F.R. § 52.2671 (2026): Classification of regions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2671

## Section

- **Citation:** 40 C.F.R. § 52.2671 (2026)
- **Heading:** Classification of regions
- **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 AAA / § 52.2671: § 52.2671   Classification of regions.

## Text

The Guam plan was evaluated on the basis of the following classifications. Air quality control region Pollutant Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons) Guam III II III III III

## Nearby sections

- [40 C.F.R. § 52.2670 (2026) § 52.2670   Identification of plan.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2670.md)
- [40 C.F.R. § 52.2671 (2026) § 52.2671   Classification of regions.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2671.md)
- [40 C.F.R. § 52.2672 (2026) § 52.2672   Approval status.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2672.md)
- [40 C.F.R. § 52.2673 (2026) § 52.2673   Original identification of plan.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2673.md)
- [40 C.F.R. § 52.2676 (2026) § 52.2676   Significant deterioration of air quality.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2676.md)
- [40 C.F.R. § 52.2678 (2026) § 52.2678   Control strategy and regulations: Particulate matter.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2678.md)
- [40 C.F.R. § 52.2679 (2026) § 52.2679   Control strategy and regulations: Sulfur dioxide.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2679.md)
- [40 C.F.R. § 52.2682 (2026) § 52.2682   Air quality surveillance.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2682.md)
- [40 C.F.R. § 52.2684 (2026) § 52.2684   Source surveillance.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2684.md)
- [40 C.F.R. § 52.2686 (2026) § 52.2686   Upset-breakdown reporting.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2686.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P52_S52_2671. Check the current official text before relying on it. Not legal advice.