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Proposed long‑term quarry lease draws conservation commitments and revenue forecasts; PUC to return with action
Summary
Staff outlined a phased lease with Oliver de Silva Inc. for SMP 30 and a potential future SMP 17 expansion that would delay Apperson Ridge mining, provide conservation funding and mitigation, and yield a projected $90–$141 million NPV to SFPUC depending on production scenarios.
Commissioners spent an extended portion of Tuesday’s meeting on a proposed multi‑decade lease with Oliver de Silva Inc. (ODS) to operate and expand quarrying on SFPUC lands in Sonoma Valley (SMP 30) and, potentially at a later date, Apperson Ridge (SMP 17).
Staff framed the deal as a three‑phase process. Mike Martin and Gary Dowd described staff’s retained discretion on environmental review and noted the initial lease phase would formalize a transfer of operating rights under the existing SMP 30 permit through 2021. A second phase would seek permit revisions to expand SMP 30’s footprint and deepen mining to 225 feet, add a slurry cutoff wall to protect creek flows, relocate utilities and update the reclamation plan so the site could be reclaimed as water storage. If those revisions are approved, the tenant agreed it would not commence mining at Apperson Ridge…
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