Data Request / "FOIA" Request

The public can request to view public information in writing, verbally, by fax or by e-mail. Written requests should be identified as a request for public information under the Public Records Act and directed to the Air District Clerk of the Board. Written requests should be mailed to Northern Sonoma County Air Pollution Control District, 150 Matheson Street, Healdsburg, CA 94558. The written request need not be in any particular form, but should describe the requested records with sufficient detail to enable District Staff to identify and locate the information sought. To the greatest possible extent, please include permit numbers, company and/or individual names, street addresses, names, descriptions and dates of correspondence, reports, submittals, and similar information so that the District may respond to your request. The request must also contain an address, phone number, and/or e-mail address so the District can reach you. To help assure that your request contains information enabling a prompt response, you may use the online form for Air Pollution Public Record & Information Requests.

​The Public Records Act requires the District to respond to requests for public information within 10 days. The response will tell you whether the information you request is available, how you can view it or get copies, the cost of providing the copies, which (if any) of the records are not subject to disclosure (see below, Public Records Exempt from Disclosure), and how to make an appointment, if needed.

​Public records are open to inspection during District office hours, 8:00 AM - 4:30 PM, Monday through Friday, except for state and District holidays or mandatory furlough days. However, for the most efficient processing, the District requests that you make an appointment so District Staff can have the records available and provide space for you to review them.​​

Data Use Disclaimer (including AQI Maps)

Any user of this data is hereby notified that the data are subject to constant change and that accuracy cannot be guaranteed.  Data are provided as is, with all faults and without warranty of any kind.  NSCAPCD, its agents, consultants, contractors and employees do not warrant the data displayed will meet a user's requirements or that the data will be error free, or that data defects will be corrected.  The entire risk as to the quality, accuracy, performance, and usefulness of the data displayed resides solely with the user.  Users agree to indemnify and hold harmless NSCAPCD, its agents, consultants, contractors and employees from any and all liability claims for damages to any person or property arising from or connected with the use of the data.

Accessibility Assistance

If you have a disability and the format of any material on our website interferes with your ability to access information on this site, please contact the Webmaster or call our office at (707) 433-5911.  To enable us to respond in a manner that will be of most help to you, please indicate:

  • The nature of the accessibility need
  • Your preferred format (electronic format, large print, etc.)
  • The web address of the requested material
  • Your full contact information, so we can reach you if questions arise while fulfilling your request.

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