Guidance:
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ADOTs is comitted 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.
