We regulate stationary sources that emit regulated pollutants to the atmosphere. The District does this in part by issuing air quality permits for the construction and operation of stationary equipment that emits regulated pollutants. Remember, to get your permit before you begin the construction of your project. Visit our Business Permit page for more information and payment options.

Open Burning

Open Burn Permits are required by state law in California, from the local air district, to dispose of vegetative material outdoors by open burning. Non-vegetative material may never be burned and barrel burning is prohibited by law. This includes residential, agricultural, and prescribed open burning. Visit our Open Burn Permit page for more information and payment options.



Renovation or demolition of structures that contain asbestos requires advance notification to the District and handling by EPA-certified contractors. Asbestos is considered a toxic pollutant by Federal and State law because it is known to cause or contribute to cancer. All forms of asbestos are considered toxic and no safe exposure level has been determined for residential areas. The District FAQ, below, provides specific District information.

Smog Exemption

A vehicle registered in the Northern Sonoma County Air Pollution Control District territory may be issued a biennial Smog Check exemption. Note that California law still requires a Smog Check inspection when a vehicle changes ownership or when it is registered for the first time in California.

To obtain an exemption, consumers must submit a request via email to the Bureau of Automotive Repair at  The request must include the following information:

  • Name of registered vehicle owner(s)
  • Phone number of registered vehicle owner
  • Address where vehicle is registered
  • Vehicle license plate number

If the request is approved, the Bureau of Automotive Repair will issue an exemption through the DMV and notify the consumer via email. The consumer can then register and/or renew the registration of the vehicle without obtaining a Smog Check certificate.

Free Consultation Available

We’re here to help to ensure you have the right permit application. Contact us for a free consultation at 707-433-5911 or