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PUC: Unexpected geologic discovery at Calaveras Dam could add about $60 million and delay work by a year
Summary
The San Francisco Public Utilities Commission was told preliminary investigations at Calaveras Dam found new subsurface geology that could raise costs by at least $60,000,000 and push the schedule out at least a year; staff said further study continues and the program has a $144,000,000 management reserve.
The San Francisco Public Utilities Commission was briefed on a new, potentially large cost and schedule impact at the Calaveras Dam reconstruction project. A staff presenter said investigators found previously unknown geologic features at Observation Hill that will require additional excavation and disposal and that the impacts are “likely to be at least $60,000,000” with “the impact on schedule [being] at least a year.”
General Manager Ed Harrington and staff framed the findings as…
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