Air Quality

• AASHTO Air Quality Community of Practice and State of the Practice Reports

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• FHWA Air Quality Program website
• FHWA Transportation Conformity Resources
• FHWA Congestion Mitigation and Air Quality Improvement (CMAQ) Program information
• FHWA Air Toxics information

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• EPA Transportation and Air Quality Information

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• 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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