Adequacy Status of Motor Vehicle Emissions Budgets in Submitted 8-Hour Ozone Attainment Plan for San Diego; California

Issuing agencies

Abstract

The Environmental Protection Agency (EPA or "Agency") is notifying the public that the Agency has found motor vehicle emissions budgets ("budgets") adequate in a California state implementation plan (SIP) submittal for San Diego County. Specifically, our finding relates to budgets in the area's "2020 Plan for Attaining the National Ambient Air Quality Standards for Ozone in San Diego County (October 2020)" ("2020 San Diego Ozone Plan" or "plan"). We find that these budgets are adequate for transportation conformity purposes for the 2008 and 2015 ozone national ambient air quality standards (NAAQS). Upon the effective date of this notice of adequacy, prior budgets for the 2008 ozone NAAQS previously found adequate by the EPA will no longer be applicable for transportation conformity purposes, and the San Diego Association of Governments (SANDAG) and the U.S. Department of Transportation must use these adequate budgets in future transportation conformity determinations.