40 CFR § 81.268 - Mohave-Yuma Intrastate Air Quality Control Region.

---
identifier: "/us/cfr/t40/s81.268"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.268 - Mohave-Yuma Intrastate Air Quality Control Region."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.268"
section_name: "Mohave-Yuma Intrastate Air Quality Control Region."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "81"
part_name: "DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401,"
regulatory_source: "36 FR 22421, Nov. 25, 1971, unless otherwise noted."
cfr_part: "81"
---


# 81.268 Mohave-Yuma Intrastate Air Quality Control Region.

The Mohave-Yuma Intrastate Air Quality Control Region (Arizona) has been revised to consist of the territorial area encompassed by the boundaries of the following jurisdictions or described area (including the territorial area of all municipalities (as defined in section 302(f) of the Clean Air Act, 42 U.S.C. 7602(f)) geographically located within the outermost boundaries of the area so delimited): In the State of Arizona: La Paz County, Mohave County, and Yuma County

[90 FR 59057, Dec. 18, 2025]