40 CFR § 81.204 - Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region.
---
identifier: "/us/cfr/t40/s81.204"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 81.204 - Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region."
title_number: 40
title_name: "Protection of Environment"
section_number: "81.204"
section_name: "Wilmington-Chillicothe-Logan 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"
---
# 81.204 Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region.
The Wilmington-Chillicothe-Logan Intrastate Air Quality Control Region (Ohio) consists of the territorial area encompassed by the boundaries of the following jurisdiction 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 Ohio: Clinton County, Fayette County, Highland County, Hocking County, Jackson County, Pike County, Ross County, Vinton County.