EPA is proposing to approve revisions to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion of the California State Implementation Plan (SIP). These revisions concern oxides of nitrogen (NOX) from solid fuel fired boilers, steam generators and process heaters. The EPA is approving a local rule that regulates these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act). The EPA is taking comments on this proposal and plans to follow with a final action.

DATES: Any comments must arrive by May 29, 2012.

http://www.gpo.gov/fdsys/pkg/FR-2012-04-26/pdf/2012-10076.pdf