ADOTs goal is to improve air quality by ensuring that all
projects and operations comply with federal, state and local
air quality laws and regulations.
The Environmental Planning Group evaluates the air quality
impacts of ADOT's transportation projects to determine if
the project will cause or contribute to a violation of the
National Ambient Air Quality Standards. Specialized air modeling
is conducted for those projects that increase traffic capacity,
or that have changes in the vertical and/or horizontal alignment.
The guidance in the right-hand column provide
information to help the consultant or local government representative
conduct accurate air quality analyses. Included are EPA standards,
non-attainment area maps, and air quality conformity process.
