---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part52/subpartAAA"
level: "subpart"
label: "Subpart AAA"
heading: "Guam"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part52-subpartAAA"
sections_count: 15
---

# Subpart AAA — Guam

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs › Part 52 — Approval and Promulgation of Implementation Plans

## Sections

- [§52.2670. Identification of plan.](/cfr/40/52.2670.md)
- [§52.2671. Classification of regions.](/cfr/40/52.2671.md)
- [§52.2672. Approval status.](/cfr/40/52.2672.md)
- [§52.2673. Original identification of plan.](/cfr/40/52.2673.md)
- [§52.2674-52.2675. Reserved](/cfr/40/52.2674-52.2675.md)
- [§52.2676. Significant deterioration of air quality.](/cfr/40/52.2676.md)
- [§52.2677. Reserved](/cfr/40/52.2677.md)
- [§52.2678. Control strategy and regulations: Particulate matter.](/cfr/40/52.2678.md)
- [§52.2679. Control strategy and regulations: Sulfur dioxide.](/cfr/40/52.2679.md)
- [§52.2680-52.2681. Reserved](/cfr/40/52.2680-52.2681.md)
- [§52.2682. Air quality surveillance.](/cfr/40/52.2682.md)
- [§52.2683. Reserved](/cfr/40/52.2683.md)
- [§52.2684. Source surveillance.](/cfr/40/52.2684.md)
- [§52.2685. Reserved](/cfr/40/52.2685.md)
- [§52.2686. Upset-breakdown reporting.](/cfr/40/52.2686.md)