40 CFR § 52.1529 - Significant deterioration of air quality.
---
identifier: "/us/cfr/t40/s52.1529"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.1529 - Significant deterioration of air quality."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.1529"
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: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
cfr_part: "52"
---
# 52.1529 Significant deterioration of air quality.
New Hampshire's Part Env-A 623, “Requirements for Prevention of Significant Deterioration Permits,” as submitted on August 6, 2001, is approved as meeting the requirements of Subpart 1, Part C, Title I, of the Clean Air Act.
[67 FR 65713, Oct. 28, 2002]