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SFPUC updates on Mountain Tunnel repairs, Cherry Dam valve emergency and Moccasin work
Summary
SFPUC staff reported inspection and repairs on the Mountain Tunnel (about 7,600 linear feet repaired), said the agency is leaning toward repair rather than building a new tunnel, and described emergency work at Cherry Dam that will require partial reservoir drawdown and a request to increase project scope and budget.
Dan Wade presented the Hetch Hetchy Water and Power capital-improvement quarterly report on June 13, outlining schedule and cost variances and several urgent repairs.
Wade recapped recent work on Mountain Tunnel, saying staff completed a scheduled shutdown and repaired roughly 7,600 linear feet of tunnel lining after inspecting the entire 19-mile facility. "We inspected and identified a number of defects that were repaired," Wade said, and said staff…
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