CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES > SUBPART C—Section 107 Attainment Status Designations (§81.300 to §81.356) > 81.309—District of Columbia.

81.309—District of Columbia.

District of Columbia—TSP
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
1. Area bounded by: East Capitol Street S.E., District Line (Southern Avenue S.E.), Eastern Shore of Potomac River and Eastern Shore of Anacostia River X
2. Area bounded by: Francis Scott Key Bridge, M Street, N.W., 23rd Street N.W., Florida Avenue N.W., U Street N.W., Florida Avenue N.W.-N.E., 4th Street N.E.-S.E. Southeast-Southwest Freeway (I295, I395), 15th Street S.W.-N.W., Constitution Avenue N.W., Theodore Roosevelt Memorial Bridge, Potomac River X
3. Remainder of the District of Columbia portion of the National Capital Interstate AQCR X
District of Columbia—SO2
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
National Capital Interstate AQCR—District of Columbia portion X
District of Columbia-Carbon Monoxide
Designated area Designation Classification
Date 1 Type Date 1 Type
Washington Area:
Washington Entire Area. Attainment
1 This date is November 15, 1990, unless otherwise noted.
District of Columbia—Ozone (1-Hour Standard)2
Designated area Designation Classification
Date 1 Type Date 1 Type
Washington Area: Washington Entire Area Nonattainment 3/25/03 Severe
1 This date is November 15, 1990, unless otherwise noted.
2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in the District of Columbia.
District of Columbia—NO2
Designated area Does not meet primary standards Cannot be classified or better than national standards
National Capital Interstate AQCR—District of Columbia portion X
District of Columbia—Ozone (8-Hour Standard)
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Washington, DC-MD-VA:
District of Columbia Nonattainment Subpart 2 /Moderate.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is June 15, 2004, unless otherwise noted.
District of Columbia—PM2.5 (Annual NAAQS)
Designated area Designation a
Date 1 Type
Washington, DC-MD-VA:
District of Columbia Nonattainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
District of Columbia—PM2.5 [24-hour NAAQS]
Designated area Designation for the 1997 NAAQS a Designation for the 2006 NAAQS a
Date 1 Type Date 2 Type
AQCR 047 National Capital Interstate (DC-MD-VA) (part)
District of Columbia Unclassifiable/Attainment Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
2 This date is 30 days after November 13, 2009, unless otherwise noted.

Code of Federal Regulations

[43 FR 40507, Sept. 12, 1978, as amended at 46 FR 48929, Oct. 5, 1981; 47 FR 31878, July 23, 1982; 56 FR 56738, Nov. 6, 1991; 61 FR 2937, Jan. 30, 1996; 63 FR 31035, June 5, 1998; 65 FR 45216, July 20, 2000; 68 FR 3424, Jan. 24, 2003; 69 FR 23893, Apr. 30, 2004; 70 FR 963, Jan. 5, 2005; 70 FR 44475, Aug. 3, 2005; 74 FR 58720, Nov. 13, 2009]