40 CFR § 81.135 - Brownsville-Laredo Intrastate Air Quality Control Region.
---
identifier: "/us/cfr/t40/s81.135"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.135 - Brownsville-Laredo Intrastate Air Quality Control Region."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.135"
section_name: "Brownsville-Laredo 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"
---
# 81.135 Brownsville-Laredo Intrastate Air Quality Control Region.
The Brownsville-Laredo Intrastate Air Quality Control Region (Texas) consists 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 aso delimited):
In the State of Texas: Cameron County, Hidalgo County, Jim Hogg County, Starr County, Webb County, Willacy County, Zapata County.