Public Notices

PUBLIC NOTICE: RULE 428 – NSR Requirements for New and Modified Major Sources in Nonattainment Areas

The Northern Sierra Air Quality Management District (NSAQMD) is accepting comments on proposed Rule 428: New Source Review. Existing Rule 428 is proposed to be rescinded and replaced with a new Rule 428.  428 addresses preconstruction review for major sources of nonattainment pollutants and their precursors. This rule is federally required for nonattainment areas, including the Portola PM2.5 and Western Nevada County Ozone nonattainment areas. A 2-site public hearing via videoconference or telephone will be held November 25, 2019 at 1:00 PM at both NSAQMD offices: 200 Litton Drive, Suite 316, Grass Valley, CA and 257 East Sierra Street, Unit E, Portola, CA. For information, visit or call 530-274-9360 x106. In case of cancellation, the hearing will be held at the same time and locations on January 27, 2020.  Written comments must be received by November 21, 2019 at NSAQMD, 200 Litton Dr., Ste. 316, Grass Valley, CA 95945 or 

TO VIEW THE PROPOSED RULE CLICK Final Draft 11-25-19 NS NSR Rule 428