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

# Subpart II — North Carolina

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

- [§52.1769. Reserved](/cfr/40/52.1769.md)
- [§52.1770. Identification of plan.](/cfr/40/52.1770.md)
- [§52.1771. Classification of regions.](/cfr/40/52.1771.md)
- [§52.1772. Approval status.](/cfr/40/52.1772.md)
- [§52.1773-52.1774. Reserved](/cfr/40/52.1773-52.1774.md)
- [§52.1775. Rules and regulations.](/cfr/40/52.1775.md)
- [§52.1776. Visibility protection.](/cfr/40/52.1776.md)
- [§52.1777. Reserved](/cfr/40/52.1777.md)
- [§52.1778. Significant deterioration of air quality.](/cfr/40/52.1778.md)
- [§52.1779. Control strategy: Ozone.](/cfr/40/52.1779.md)
- [§52.1780. Reserved](/cfr/40/52.1780.md)
- [§52.1781. Control strategy: Sulfur oxides and particulate matter.](/cfr/40/52.1781.md)
- [§52.1783. Original identification of plan section.](/cfr/40/52.1783.md)
- [§52.1784. Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?](/cfr/40/52.1784.md)
- [§52.1785. Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of sulfur dioxide?](/cfr/40/52.1785.md)