Partial Approval and Partial Disapproval of Air Quality Implementation Plans; California; San Joaquin Valley Serious Area and Section 189(d) Plan for Attainment of the 1997 Annual PM2.5

Publication Date: 
Friday, November 26, 2021 - 4:00am

The Environmental Protection Agency (EPA) is taking final action to approve in part and disapprove in part portions of state implementation plan (SIP) revisions submitted by California to address Clean Air Act (CAA or ``Act'') requirements for the 1997 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or ``standards'') in the San Joaquin Valley PM<INF>2.5</INF> nonattainment area. Specifically, the EPA is approving the 2013 base year emissions inventories in the submitted SIP revision. The EPA is disapproving the attainment demonstration and related elements, including the comprehensive precursor demonstration, five percent annual emissions reductions demonstration, best available control measures (BACM) demonstration, reasonable further progress (RFP) demonstration, quantitative milestones, and contingency measures. The EPA is also disapproving the motor vehicle emissions budgets in the plan as not meeting the requirements of the CAA and EPA regulations.

Environmental Protection Agency