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Electronic Code of Federal Regulations

e-CFR data is current as of December 4, 2019

Title 40Chapter ISubchapter CPart 81Subpart B → §81.12


Title 40: Protection of Environment
PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES
Subpart B—Designation of Air Quality Control Regions


§81.12   National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia).

The National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and Virginia) consists of the territorial area encompassed by the boundaries of the following jurisdictions (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);

District of Columbia

In the State of Maryland: Montgomery County; Prince Georges County.

In the State of Virginia: Arlington County; Fairfax County; Loudoun County; Prince William County.

(As so delimited, the Virginia portion of the region will include the city of Alexandria, the city of Fairfax, and the city of Falls Church.)

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