[Code of Federal Regulations]
[Title 40, Volume 15]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR81.12]

[Page 10]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 81--DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES--Table of Contents
 
          Subpart B--Designation of Air Quality Control Regions
 
Sec. 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.)