40 CFR § 52.2528 - Significant deterioration of air quality.

---
identifier: "/us/cfr/t40/s52.2528"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.2528 - Significant deterioration of air quality."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.2528"
section_name: "Significant deterioration of air quality."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "52"
part_name: "APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
cfr_part: "52"
---


# 52.2528 Significant deterioration of air quality.

(a) The requirements of Sections 160 through 165 of the Clean Air Act are met since the plan includes approvable procedures for the Prevention of Significant Air Quality Deterioration.

(b) [Reserved]

[51 FR 12518, Apr. 11, 1986, as amended at 78 FR 33985, June 6, 2013]