Synthesis of Information Related to Highway Practices. Topic 51-18. Practices for Project-Level Analyses for Air Quality

Air quality project-level analyses that state departments of transportation (DOTs) are required to prepare for purposes of the National Environmental Policy Act (NEPA) and the Environmental Protection Agency (EPA) transportation conformity rules are complicated, time-consuming and costly to prepare. Changes in the air quality requirements and associated guidance by federal and state agencies make transportation project-level analyses more challenging. As a result, state DOTs are conducting these project-level analyses in different ways. The objective of this synthesis is to summarize existing practices related to project-level analysis for air quality by State DOTs. Information will be collected through literature review, survey of DOTs, and follow-up interviews with selected agencies for the development of case examples. A minimum of five representative case examples will be developed to describe assumptions, methodology and lessons learned for relevant pollutants identified by DOTs. The case examples will represent different regions of the country, levels of project analyses, facility types, and pollutants. Information gaps and suggestions for research to address those gaps will be identified.


  • English


  • Status: Active
  • Funding: $45000
  • Contract Numbers:

    Project 20-05,Topic 51-18

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Zwahlen, Tanya

  • Performing Organizations:

    Zamurs and Associates, LLC

    Slingerlands, NY  United States 
  • Principal Investigators:

    Zamurs, John

  • Start Date: 20190919
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01704621
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05,Topic 51-18
  • Files: TRB, RIP
  • Created Date: May 13 2019 3:09PM