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[Note: This document has been incorporated into and/or superseded by the Final Guidance for the CMAQ Program which was published in the Federal Register on October 20, 2008 and became effective on November 17, 2008. This Final Guidance can be accessed at: HTML version: PDF version: (394KB). - ed.]

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U.S. Department of Transportation
Federal Highway Administration

Subject: INFORMATION: Guidance on the Congestion Mitigation and Air Quality Improvement (CMAQ) Program Under the Transportation Equity Act of the 21st Century (TEA-21)

Cynthia J. Burbank, Program Manager
Planning and Environment
Charlotte M. Adams, Associate Administrator for Planning

FHWA Division Administrators
FHWA Resource Center Directors
Federal Lands Highway Division Engineers
FTA Regional Administrators

Date: April 28, 1999

Reply to: HENE/TPL-1

The purpose of this memo is to transmit new guidance for the CMAQ program as reauthorized under TEA-21. Interim Guidance on the CMAQ program under TEA-21 was issued on August 14, 1998. Extensive outreach efforts were conducted in the fall of 1998, including focus groups in which over 200 participants provided input and a Federal Register notice for comments which resulted in numerous written comments and suggestions to FHWA and FTA. This input was very helpful in assisting the FHWA and FTA in assembling the final guidance on the CMAQ program.

This guidance replaces all earlier CMAQ guidance documents and provides information on: 1) CMAQ authorization levels and apportionment factors; 2) the new flexibility and transferability provisions; 3) geographic area eligibility for CMAQ funds and the impacts of the new National Ambient Air Quality Standards on eligibility; 4) project eligibility; 5) analytical requirements; and 6) Federal, State, and local agency roles and responsibilities in the administration of the program.

Several States have recently requested the use of CMAQ funds for high-speed rail projects located outside of nonattainment and maintenance areas which have here-to-fore been generally ineligible. Given this level of interest, FHWA and FTA have decided to solicit input on the issue from our stakeholders through a Federal Register notice. If a change in policy is warranted, FHWA and FTA will issue a policy memorandum to that effect.

Copies of this guidance (PDF - 88 KB or HTML) will be posted on the FHWA and FTA websites and will be made widely available to stakeholders in the CMAQ program. In addition, follow-up activities will be undertaken in the coming months in order to assemble additional information, best practices and analytical techniques that can be made available to States, metropolitan planning organizations, and transit agencies in order to facilitate the selection of projects and programs that most effectively reduce transportation-related emissions in air quality nonattainment and maintenance areas. Questions on the CMAQ program or on this guidance should be directed to Michael J. Savonis at 202-366-2080 or Abbe Marner at 202-366-4317.

Updated: 5/31/2012
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