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Reasonable Availability Control Technology (RACT)

The Northern Sierra Air Quality Management District (NSAQMD) proposes to adopt Reasonable Availability Control Technology (RACT) State Implementation Plan (SIP) for the Western Nevada County federal ozone nonattainment area for the 2015 Primary Federal 8-Hour Ozone Standard to fulfill requirements under the Clean Air Act. This version is based on an updated reclassification from moderate to serious for the 2015 Ozone federal 8-hour Ozone National Ambient Air Quality Standard. No new or revised regulations are proposed.

Submit written comments to NSAQMD, Attn: Tasha Coleman, 200 Litton Drive, Ste 320, Grass Valley, CA 95945 or email to to be received by June 21, 2024. Call (530) 274-9360 x506 with questions.

For further information, the District will conduct a public hearing during the NSAQMD Board of Directors regular meeting via in-person/teleconference on Monday, June 24, 2024, at 1:00 PM at 200 Litton Dr., Suite 316, Grass Valley, CA 95945 and 257 E. Sierra Street, Unit E, Portola CA 96122. In case of cancellation, the public hearing will be held at the same time and locations on Monday, July 22, 2024.

The documents for the proposed RACT can be found on here:  

Documents for proposed RACT

 The request for documents can be provided to individuals by emailing

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