Shanelle Scales-Preston began serving on the Delta Diablo Board of Directors in January 2025, representing the unincorporated community of Bay Point in her capacity as a Contra Costa County Supervisor (District 5 representative). Director Scales-Preston is a resident of Pittsburg who was elected to the Pittsburg City Council in 2018 and served as mayor in 2023. She earned a degree from California State University East Bay. Prior to being elected to the Contra Costa County Board of Supervisors in November 2024, she worked as District Director for Congressman Mark DeSaulnier.

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