Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution Control District

The Environmental Protection Agency (EPA) is proposing to approve a revision to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion of the California State Implementation Plan (SIP). This revision concerns volatile organic compound (VOC), oxides of nitrogen (NOX), and particulate matter (PM) emissions from internal combustion engines. We are proposing to approve a local rule to regulate these emission sources under the Clean Air Act (CAA or the Act). We are taking comments on this proposal and plan to follow with a final action.