40 CFR § 52.56 - Control strategy: Ozone.

---
identifier: "/us/cfr/t40/s52.56"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 52.56 - Control strategy: Ozone."
title_number: 40
title_name: "Protection of Environment"
section_number: "52.56"
section_name: "Control strategy: Ozone."
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"
---


# 52.56 Control strategy: Ozone.

(a) The state implementation plan (SIP) revision submitted on June 21, 2022, addressing Clean Air Act section 110(a)(2)(D)(i)(I) (prongs 1 and 2) for the 2015 ozone national ambient air quality standards (NAAQS) is disapproved.

(b) [Reserved]

[88 FR 9381, Feb. 13, 2023]