EPA has released two transportation conformity guidance documents related to implementation of the 2008 ozone NAAQS:
- Transportation Conformity Guidance for 2008 Ozone NAAQS Nonattainment Areas
- Guidance for Transportation Conformity Implementation in Multi-Jurisdictional Nonattainment and Maintenance Areas
These documents can be found at the following website:
http://www.epa.gov/oms/stateresources/transconf/2008naaqs.htm
Also, an update to the Baseline Year for the Baseline Year Test (in 40 CFR 93.119) table has been added at:
http://www.epa.gov/oms/stateresources/transconf/baseline.htm