40 CFR § 52.2377 - Review of new sources and modifications.

---
identifier: "/us/cfr/t40/s52.2377"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.2377 - Review of new sources and modifications."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.2377"
section_name: "Review of new sources and modifications."
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"
---


# 52.2377 Review of new sources and modifications.

Regulation 5-501(3) entitled “Default Permits” is disapproved.

[45 FR 10782, Feb. 19, 1980]