40 CFR § 52.1778 - Significant deterioration of air quality.

---
identifier: "/us/cfr/t40/s52.1778"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.1778 - Significant deterioration of air quality."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.1778"
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"
---


# 52.1778 Significant deterioration of air quality.

(a)-(b) [Reserved]

(c) All applications and other information required pursuant to § 52.21 from sources located in the State of North Carolina shall be submitted to the appropriate state or local agency for which the source is located, rather than to EPA's Region 4 office: North Carolina Department of Environmental Quality, Division of Air Quality, 1641 Mail Service Center, Raleigh, North Carolina 27699-1641; Forsyth County Office of Environmental Assistance and Protection, 201 North Chestnut Street, Winston-Salem, North Carolina 27101-4120; Mecklenburg County Land Use and Environmental Services Agency, Air Quality, 2145 Suttle Avenue, Charlotte, North Carolina 28208; or Western North Carolina Regional Air Quality Agency, 125 S. Lexington Ave., Suite 101, Asheville, North Carolina 28801-3661.

[43 FR 26410, June 19, 1978, as amended at 47 FR 7837, Feb. 23, 1982; 74 FR 55143, Oct. 27, 2009; 77 FR 23398, Apr. 19, 2012; 79 FR 30051, May 27, 2014; 82 FR 32645, July 17, 2017]