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WESIP progress: Calaveras stabilization, Irvington tunnel nearing breakthrough, Bay Tunnel lining advances
Summary
Resive Director Julie Labonte updated the commission on Water System Improvement Program activity: seismic and slope work at Calaveras, nearly complete Irvington tunnel boring with about 600 feet to go and continued progress on Bay Tunnel inner pipe lining (2 of 5 miles welded).
Julie Labonte briefed the commission on key WESIP projects and field conditions observed during recent work and the Rim Fire response.
On Calaveras, Labonte said crews are stabilizing Observation Hill and have identified additional tectonic features that require reinforcement; the team expects to have a clearer estimate of cost and schedule…
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