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Below is a listing of organizations that may be contacted in order to find out what agencies are responsible for the conformity process and air quality in any given geographic area.

For Federal Highway Administration

For conformity information pertaining to a specific State or MPO, please contact the FHWA Division Office.

For national policy and program information, please contact the FHWA Headquarter's Transportation Conformity Team:

Karen Perritt 202-366-9066

Additional technical assistance can be obtained by contacting the FHWA Resource Center Air Quality Team.

For Federal Transit Administration Regional Offices

Region 1 Cambridge, Massachusetts 617-494-2055
Region 2 New York, New York 212-668-2170
Region 3 Philadelphia, Pennsylvania 215-656-7100
Region 4 Atlanta, Georgia 404-562-3500
Region 5 Chicago, Illinois 312-353-2789
Region 6 Forth Worth, Texas 817-978-0550
Region 7 Kansas City, Missouri 816-523-0204
Region 8 Denver, Colorado 303-844-3242
Region 9 San Francisco, California 415-744-3133
Region 10 Seattle, Washington 206-220-7954

For Environmental Protection Agency Contacts:

Information on transportation conformity or a current listing of nonattainment and maintenance areas can be found at: or or contact the appropriate EPA Regional Office:

For State Departments of Transportation
American Association of State Highway and Transportation Officials
444 N. Capitol St. N.W.
Washington, D.C. 20001
Telephone: 202-624-5800

For Metropolitan Planning Organizations or Councils of Government
National Association of Regional Councils (NARC)
1666 Connecticut Avenue, NW, Suite 300
Washington, D.C. 20009
Telephone: 202-986-1032
Association of Metropolitan Planning Organizations (AMPO)
1730 Rhode Island Avenue, N.W., Suite 608
Washington, D.C. 20036
Telephone: 202-296-7051

For Transit Agencies
American Public Transportation Association
1201 New York Avenue, N.W.
Washington, D.C. 20005
Telephone: 202-898-4000

For State or Local Air Agencies
State and Territorial Air Pollution Program Administrators/
Association of Local Air Pollution Control Officials

444 North Capitol St. N.W.
Washington, D.C. 20001
Telephone: 202-624-7864

Updated: 10/20/2015
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