Do I Need a Permit?

You may if ​ you construct, modify, operate, or use a stationary or indirect source which may cause, or potentially cause, the emission of air contaminants.  Air contaminants include criteria and toxic air contaminants listed by CARB and EPA.

Due to the wide variety of projects, permits cannot be automatically generated online. New applicants, please call to setup a free consultation and to receive application forms.

Online payment is an option for new and existing permits. Please call (707) 433-5911 to receive your project’s fee amount and the link to the online payment portal (a service charge applies for online payments).

Permit Process

The District permits stationary sources in a 2-step permit process. In the first step, a source applies for Authority to Construct (ATC) permit with temporary operation. This allows a source to modify existing equipment or construct/install new equipment and to operate for up to 12 months. Once construction is complete, the District inspects the site and reviews performance for compliance with applicable air quality requirements. Once compliance is verified, the District will issue the second permit, which is an ongoing Permit to Operate (PTO).

The District’s review and permitting process is described in District regulation R1-2-200. Facilities pay an application fee and an annual operation fee, as identified in District regulation R1-3-310.