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Guidelines for Development of an Air Quality Report Micro-scale Analysis
This document is to provide uniform guidelines for the preparation or evaluation of project level air quality analyses performed on proposed improvements to roadways in Arizona.

Guidelines for Development of an Air Quality Report Micro-scale Analysis

Air Quality Conformity Processes
These federal regulations cover the legal consultation and methodology requirements on air quality conformity, and the criteria/procedures for violations.

40 CFR 93.105: Consultation Requirements

40 CFR 93.123: Procedures for Determining Localized CO and PM10 Concentrations

40 CFR 93.116: Criteria and Procedures for Localized CO and PM10 Violations

Flowchart for Air Quality Project-Level Conformity Determination
This handy flowchart (last update 9-21-04) details the project level components that the Environmental Planning Group has to address when clearing every highway project. A must for all practitioners involved in air conformity work for ADOT.

Flowchart for Air Quality Project-Level Conformity Determination

Non-Attainment Area Particulate Matter (PM10) Maps
These maps depict non-attainment areas for particulate matter (PM10) throughout the state. They will assist practitioners in assessing air quality impacts during their environmental investigations.

Non-Attainment Area PM10 Map for Ajo

Non-Attainment Area PM10 Map for Douglas

Non-Attainment Area PM10 Map for Hayden

Non-Attainment Area PM10 Map for Nogales

Non-Attainment Area PM10 Map for Paul-Spur

Non-Attainment Area PM10 Map for Phoenix

Non-Attainment Area PM10 Map for Rillito

Non-Attainment Area PM10 Map for Yuma

Non-Attainment Area Ozone Map
This map depicts the non-attainment area for the eight-hour ozone for the Phoenix metropolitan area. It will assist practitioners in assessing air quality impacts during their environmental investigations.

Non-Attainment Area for Eight-Hour Ozone for Phoenix

Maintenance Area Particulate Matter (PM10) Maps
These maps depict maintenance areas for particulate matter (PM10) for Bullhead City and Payson. They will assist practitioners in assessing air quality impacts during their environmental investigations.

Maintenance Area PM 10 Map for Bullhead City

Maintenance Area PM 10 Map for Payson

Maintenance Area Carbon Monoxide (CO) Map
This map depicts the maintenance area for carbon monoxide (CO) for the Tucson and Phoenix metropolitan areas. It will assist practitioners in assessing air quality impacts during their environmental investigations.

Maintenance Area CO Map for Phoenix

Maintenance Area CO Map for Tucson

Statewide Air Quality Map - Nonattainment and Maintenance Areas
This map summarizes the nonattainment and maintenance areas for carbon monoxide (CO), ozone, and particulate matter (PM10) for the entire state. This handy map will be useful for practitioners in assessing air quality impacts during their environmental investigations.

Statewide Air Quality Map - Nonattainment and Maintenance Areas

Project Exemption List
This list consist of projects that are exempt from conformity to transportation plans and TIPs.

Project Exemption List

Mobile Source Air Toxics Guidance
This guidance helps the practitioner evaluate the mobile source air toxics on ADOT's highway improvement projects. Included in the guidance is an instruction memo, and text for Level 1 projects and Level 2 projects.

Mobile Source Air Toxics Guidance Memo

Level 1 Text

Level 2 Text - updated April 2010

Documents are posted as they become available in PDF format, which requires Adobe Reader to view.