Air Quality

The Virginia Department of Transportation (VDOT) provides the following resources that together were designed to help streamline the preparation of project-level air quality analyses and ensure that they will meet all applicable regulations and guidance and the needs of the department:

Documents

• Scoping Guidelines for Project-Level Air Quality Analyses
• VDOT Project-Level Air Quality Resource Document
• Template Report For Project-Level Air Quality Analyses

Programmatic Agreements (PA, which are referenced in the above documents):

• 2020 PA for carbon monoxide
• 2020 PA for carbon monoxide technical support document

Superceded: 2016 FHWA-VDOT Programmatic Agreement for Project Level Air Quality Studies for Carbon Monoxide

• Cover Letter implementing the Agreement between FHWA and VDOT (May 11, 2016)
• Text of Agreement (Attachment 2 to the Cover Letter)
• 2009 FHWA-VDOT Project Level Carbon Monoxide Air Quality Studies Agreement (as referenced in the 2016 Agreement)
  
  

2009 FHWA-VDOT No-Build Analysis Agreement for Air and Noise Studies

2004 FHWA-VDOT procedures for updating air studies when new planning assumptions become available

Modeling Data

• Instructions for accessing modeling data repository
• Modeling data repository