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Air Quality

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 (file size: 30KB)

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 (file size: 42KB)

40 CFR 93.123: Procedures for Determining Localized CO and PM10 Concentrations (file size: 42KB)

40 CFR 93.116: Criteria and Procedures for Localized CO and PM10 Violations (file size: 36KB)

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 (file size: 115KB)

FHWA Workshop on Transportation Conformity
This course (held in July 2006) was designed to provide transportation and air quality planners and other stakeholders with an introduction to Transportation Conformity. The downloads below include:
• An overview of the transportation and air quality planning
processes, and their relationship.
• A review of the major requirements of transportation conformity.
• Highlights of certain aspects of the conformity process, such as
interagency coordination and public participation.

Workshop Handouts (file size: 352KB)

Day 1 - Conformity 101 (file size: 2.6MB)

Day 2 - MOBILE6.2 Emissions Modeling (file size: 3.1MB)

Course Evaluation Form (file size: 118KB)

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 (file size: 31KB)

Non-Attainment Area PM10 Map for Douglas (file size: 30KB)

Non-Attainment Area PM10 Map for Hayden (file size: 50KB)

Non-Attainment Area PM10 Map for Nogales (file size: 38KB)

Non-Attainment Area PM10 Map for Paul-Spur (file size: 29KB)

Non-Attainment Area PM10 Map for Phoenix (file size: 70KB)

Non-Attainment Area PM10 Map for Rillito (file size: 29KB)

Non-Attainment Area PM10 Map for Yuma (file size: 39KB)

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 (file size: 347KB)

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 (file size: 32KB)

Maintenance Area PM 10 Map for Payson (file size: 37KB)

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 (file size: 64KB)

Maintenance Area CO Map for Tucson (file size: 40KB)

Maintenance Area Ozone Map
This map depicts the maintenance area for the one-hour ozone for the Phoenix metropolitan area. It will assist practitioners in assessing air quality impacts during their environmental investigations.

Maintenance Area for One-Hour Ozone for Phoenix (file size: 64KB)

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 (file size: 876KB)

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

Project Exemption List (file size: 88KB)

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 (file size: 101KB)

Level 1 Text (file size: 20KB)

Level 2 Text (file size: 488KB)

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