Air Quality

Air quality graphic

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:


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

Superceded: 2016 FHWA-VDOT Programmatic Agreement for Project Level Air Quality Studies for Carbon Monoxide

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



Page last modified: March 27, 2023