Ariz. Admin. Code § R18-2-1411 - Criteria and Procedures: Latest Emissions Model
A. During all periods the conformity
determination shall be based on the latest emission estimation model available.
This criterion is satisfied if the most current version of the motor vehicle
emissions model specified by EPA for use in the preparation or revision of
implementation plans in that state or area is used for the conformity analysis.
Where EMFAC is the motor vehicle emissions model used in preparing or revising
the applicable implementation plan, new versions shall be approved by EPA
before they are used in the conformity analysis.
B. Conformity analyses for which the
emissions analysis was begun during the grace period or before the Federal
Register notice of availability of the latest emission model, or during any
grace period announced in such notice, may continue to use the previous version
of the model for transportation plans and TIPs. The previous model may also be
used for projects if the analysis was begun during the grace period or before
the Federal Register notice of availability, provided no more than three years
have passed since the draft environmental document was issued.
Notes
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