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Air Quality

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AASHTO Resources

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Federal Highway Administration Resources

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EPA Resources

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TRB and National Cooperative Highway Research Program

  • Air Quality Fundamentals Video Series (2016), Developed by TRB, FHWA and AASHTO.
  • NCHRP 25-25, Task 89 - Establishing Representative Background Concentrations for Quantitative Hot-spot Analyses for Particulate Matter: Final Report, Case Studies, Power Point (2014)
  • NCHRP 25-25, Task 78 - Programmatic Agreements for Project-Level Air Quality Analyses Using MOVES, CAL3QHC/R and AERMOD (2015): Project Description including Final Report, Appendix B: Programmatic Agreement Template, Appendix C, Technical Support Document Template, and Data Files
  • NCHRP 25-25, Task 71 - Templates for Project-Level Analyses Using MOVES and AERMOD (2012): Final Report and Draft Templates
  • NCHRP 25-25, Task 70 - Assessment of Quantitative Mobile Source Air Toxics in Environmental Documents (2012): Final Report
  • NCHRP 25-25, Task 59 - Evaluate the Interactions Between Transportation-Related Particulate Matter, Ozone, Air Toxics, Climate Change, and Other Air Pollutant Control Strategies (2010): Final Report
  • NCHRP 25-25, Task 58 - Methods to Address Greenhouse Gas Emissions from Transportation Construction/Maintenance/Operations Activities (2010) Final Report and the Greenhouse Gas Calculator for State Departments of Transportation (GreenDOT) spreadsheet-based tool (.xls)
  • NCHRP 25-25, Task 42 - Determine Alternative Calculations for Fine Particulate Emission Factors Other Than AP-42 Applicable to Calculate Re-entrained Dust on Transportation Projects (2008): Final Report, User Guide
  • NCHRP 25-25, Task 18 - Recommended Approaches to Communicating Air Toxics Issues and Transportation Project-Related Analyses in NEPA Documents (2007): Final Report

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Featured Case Study

  • Case Study Photo

    Georgia DOT supports a range of efforts such as the Georgia Commute Options Program to help reduce auto-related air emissions.

    Read Case Study >Photo: Georgia DOT

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AASHTO (American Association of State Highway and Transportation Officials)
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