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Does a separate conformity determination need to be made for the donut area?

April 26, 2017area Conformity determination donut separate

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Does a separate conformity determination need to be made for the donut area?

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No. A separate conformity determination is not required for the donut area. Conformity determinations are required for metropolitan transportation plans and TIPs. In general, if these plans and TIPs cover a nonattainment or maintenance area with a donut area, then plan/TIP conformity determinations must be based on a regional emissions analysis that covers the entire nonattainment area, including the donut. For donut areas within multi-State nonattainment or maintenance areas, or areas with sub-area budgets, please see EPA’s multi-jurisdictional guidance.