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Hetch Hetchy CIP update: delays, rebids resolved and Cherry Dam valve installation reported
Summary
The Hetch Hetchy capital improvement quarterly report covered project variances, resolved right-of-way issues, rebid awards for penstock rehabilitation and installation of new Cherry Dam outlet valves; staff said PLC/electrical work should finish in March.
Dan Wade, director of water capital projects, presented the Hetch Hetchy Capital Improvement Program quarterly report covering the Oct. 1–Dec. 31 period.
Wade said the San Joaquin pipeline safe-entry assessment is about 20 months behind schedule. He reported that right-of-way issues on the Lower Cherry Aqueduct with the Bureau of Land Management have been resolved and that the Moccasin penstock rehabilitation required a rebid but a contract was awarded in January. Interim repairs for the Mountain Tunnel are underway and the team expects to continue CEQA and NEPA work for the longer-term project.
On the Cherry Dam outlet works rehabilitation, Wade said significant cracks and corrosion found in a butterfly valve were repaired in December and January and that new fixed cone valves—shipped from Germany—have now been installed. "The valves are installed now... They're finishing up electrical work, programmable logic controls work. We expect all that to be done in March," he said. He added the Moccasin new shops and office building are nearing substantial completion and that the Kirkwood powerhouse oil-containment project was recently awarded.
Wade said the CIP will rebalance baselines at the end of the fiscal year to reflect recent variances and that several projects previously delayed are now moving forward.
