40 CFR § 52.432 - Significant deterioration of air quality.
---
identifier: "/us/cfr/t40/s52.432"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.432 - Significant deterioration of air quality."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.432"
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"
---
# 52.432 Significant deterioration of air quality.
(a) [Reserved]
(b) Regulation for preventing significant deterioration of air quality. The provisions of 52.21(p) are hereby incorporated and made a part of the applicable State plan for the State of Delaware.
(c) All applications submitted as of that date and supporting information required pursuant to § 52.21 from sources located in the State of Delaware shall be submitted to: Delaware Department of Natural Resources and Environmental Control, Air Resources Section, Division of Environmental Control, 89 Kings Highway, P.O. Box 1401, Dover, Delaware 19901.
[78 FR 33984, June 6, 2013]