EPA is proposing to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD) and Yolo-Solano Air Quality Management District (YSAQMD) portions of the California State Implementation Plan (SIP). These revisions concern oxides of nitrogen (NOX) emissions from glass melting furnaces and biomass boilers. The EPA is approving local rules that regulate 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 plan to follow with a final action.

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

http://www.gpo.gov/fdsys/pkg/FR-2012-02-28/pdf/2012-4729.pdf