40 CFR § 81.99 - New Mexico Southern Border Intrastate Air Quality Control Region.
---
identifier: "/us/cfr/t40/s81.99"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.99 - New Mexico Southern Border Intrastate Air Quality Control Region."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.99"
section_name: "New Mexico Southern Border 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"
---
# 81.99 New Mexico Southern Border Intrastate Air Quality Control Region.
The Arizona-New Mexico Southern Border Interstate Air Quality Control Region has been renamed the New Mexico Southern Border Intrastate Air Quality Control Region and 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. 1857h(f)) geographically located within the outermost boundaries of the area so delimited):
In the State of New Mexico: Grant County, Hidalgo County, Luna County.
[45 FR 67347, Oct. 10, 1980]