40 CFR § 81.77 - Puerto Rico Air Quality Control Region.

---
identifier: "/us/cfr/t40/s81.77"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.77 - Puerto Rico Air Quality Control Region."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.77"
section_name: "Puerto Rico 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"
---


# 81.77 Puerto Rico Air Quality Control Region.

The Puerto Rico Air Quality Control Region 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 so delimited):

The entire Commonwealth of Puerto Rico: Puerto Rico and surrounding islands, Vieques and surrounding islands, Culebra and surrounding islands.