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Board sends Folsom Street development back for more review after pipeline, slope and vibration concerns
Summary
After residents and engineers raised safety concerns about construction vibrations and an unverified high‑pressure PG&E transmission line, the board returned the Folsom Street housing proposal’s environmental review for more detailed analysis and mitigation planning.
San Francisco — The Board of Supervisors on Tuesday asked the Planning Department and project sponsors to do more environmental and engineering work on a proposed small‑lot development on Folsom Street after community members and outside engineers flagged potential risks from construction vibration and the project’s location over a 26‑inch PG&E transmission pipeline.
The action: The board did not certify the earlier mitigated negative declaration for the Folsom project and instructed planning staff to require a more detailed vibration management and site‑specific investigation of the pipeline and subsurface conditions before environmental review is finalized.
Why residents objected: Neighborhood residents and independent engineers told the board the Folsom project — which would build two homes and improve a steep,…
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