Air Plan Approval; California; Feather River Air Quality Management District

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Feather River Air Quality Management District (FRAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NOX) from natural gas-fired water heaters, small boilers, and process heaters. 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.