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SFPUC presents two options for new biosolids digester; Pier 94 would cost roughly double Southeast expansion
Summary
SFPUC staff told the Port Commission they have narrowed siting for a new biosolids digester to the Southeast Treatment Plant expansion or the Pier 94 Backlands; costs are estimated at about $900 million adjacent to Southeast and roughly twice that at Pier 94, and environmental review could take about four years.
San Francisco Public Utilities Commission staff told the Port Commission the city is in early planning for a new biosolids digester facility and has narrowed candidate sites to two: an expansion/upgrade adjacent to the existing Southeast Treatment Plant or a new facility on the Pier 94 Backlands.
Karen Kubik, director of wastewater capital program for the SFPUC, said the digester project requires roughly 12 to 15 contiguous acres, modern pasteurization and drying facilities, and could produce a bioenergy byproduct. "We're in the early planning stages," Kubik said, noting…
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