Project-level Conformity

Associated Guidance:

• Transportation Conformity Guidance for Qualitative Hot-Spot Analyses in PM_2.5 and PM₁₀ Nonattainment and Maintenance Areas - March 2006
• Transportation Conformity Alert to FHWA Divisions on PM_2.5 Project-Level Conformity - November 17, 2005
• Clarification of Transportation Conformity Requirements for FHWA/FTA Projects Requiring Environmental Impact Statements - May 20, 2003
• Guidance for Qualitative Project Level "Hot-Spot" Analysis in PM₁₀ Nonattainment and Maintenance Areas - September 12, 2001
• PM2.5 Project-Level Conformity and Hot-Spot Analyses: Frequently Asked Questions

Associated Research:

• Implications of the Implementation of the MOBILE6 Emissions Factor Model on Project-Level Impact Analyses Using the CAL3QHC Dispersion Model August 2004. (Also available in PDF format, 1.9 MB)
  Prepared by ICF Consulting for the Federal Highway Administration, this report discusses how the revisions to the MOBILE model affect the estimation of localized CO concentrations, including problems and difficulties in the interaction of MOBILE6 with CAL3QHC, and recommendations for addressing these issues. In addition, this report discusses how the implementation of MOBILE6 impacts screening assessment procedures.

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