Approval and Promulgation of Implementation Plans; California; San Joaquin Valley; Revisions to Motor Vehicle Emissions Budgets for Ozone and Particulate Matter

The Environmental Protection Agency (EPA) is proposing to approve and conditionally approve revisions to the State of California's State Implementation Plan (SIP) for the San Joaquin Valley (SJV) area. The revisions consist of an update to the Motor Vehicle Emissions Budgets (``budgets'') for nitrogen oxides (NOX) and volatile organic compounds (VOCs) for the 1997 8-hour ozone national ambient air quality standard (NAAQS or ``standard'') for the SJV ozone nonattainment area; for NOX and fine particulate matter (PM2.5) for the 2006 24-hour PM2.5 standard for the SJV PM2.5 nonattainment area; and for NOX and course particulate matter (PM10) for the 1987 24-hour PM10 standard for the SJV PM10 maintenance area. The EPA is proposing to approve the SJV ozone and PM2.5 revised budgets and conditionally approve the PM10 budgets in accordance with the requirements of the Clean Air Act (CAA or ``Act'') and the EPA's regulations.