Air Quality Planning and State Implementation Plans
"Air Quality Planning for Transportation Officials: An Introduction" provides short and simple answers to basic air quality planning questions.
"Air Quality Planning for Transportation Officials" provides an overview of air quality planning requirements that are transportation-related.
"Implications of Air Quality Planning for Transportation" is a 3-day National Highway Institute training course on air quality planning.
EPA's Adequacy Review of SIP Submissions for Conformity
An Introduction to Particulate Matter for Transportation Officicals (or PDF - 296 KB) is a short brochure that answers some simple questions regarding particulate matter.
Associated Guidance
Associated EPA Guidance:
- Area Designations for the Revised 24-hour Fine Particle National Ambient Air Quality Standard. A PDF copy of this guidance can be downloaded from the EPA website.
- Conformity SIP Guidance. A PDF copy of this guidance can be download from the EPA website.
- Diesel Retrofits: Quantifying and Using Their Benefits in SIPs and Conformity - Guidance for State and Local Air and Transportation Agencies. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance for Quantifying and Using Emission Reductions from Best Workplaces for Commuter Programs in State Implementation Plans and Transportation Conformity Determinations. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance on Incorporating Bundled Measures in a State Implementation Plan. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance for Creating Annual On-Road Mobile Source Emission Inventories for PM2.5 Nonattainment Areas for Use in SIPs and Conformity. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance for Determining the "Attainment Years" for Transportation Conformity in New 8-Hour Ozone and PM2.5 Nonattainment Areas. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance on Quantifying NOx Benefits for Cetane Improvement Programs for Use in SIPs and Transportation Conformity. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance for Quantifying and Using Long Duration Truck Idling Emission Reductions in State Implementation Plans and Transportation Conformity. A PDF copy of this guidance can be downloaded from the EPA website.
- Guidance on Applicable Methodologies to Account for the Benefits of Infill in SIPs and Conformity Determinations. A PDF copy of this guidance can be downloaded from the EPA website.
- Policy Guidance on the Use of MOBILE6 for SIP Development and Transportation Conformity
- SmartWay SIP and Transportation Conformity Guidance: Accounting for NOx Reductions from Trailer Aerodynamic Kits and Low Rolling Resistance Tires. A PDF copy of this guidance can be downloaded from the EPA Website
Associated Research:
Exhausting Options: Assessing SIP-Conformity Interactions
January 2003; Winston Harrington, Alan J. Krupnick, and Peter Nelson, Resources for the Future; Arnold Howitt and Jonathan Makler, Harvard University; and Sarah J. Siwek, Sarah Siwek & Associates.
This report evaluates State Implementation Plan (SIP) and transportation conformity interactions based on six case studies: Baltimore, MD; Houston, TX; Paducah, KY; Portland, OR; Sacramento, CA; and Washington, DC.
A PDF copy of the report can be downloaded from the Resources for the Future website at www.rff.org/rff/Publications/Reports.cfm.
