- Services: County Supervisor
- Phone: 925-252-4500
- Location: 3361 Walnut Boulevard, Suite 140, Brentwood, 94513
- Website: http://www.co.contra-costa.ca.us/6449/Diane-Burgis
- Social:
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Antioch Chamber of Commerce
640 West 2nd Street
Antioch, CA 94509
PH: (925) 757-1800
Fax: (925) 757-5286