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SFPUC details repairs to New Irvington Tunnel after liner failures; disinfection delayed
Summary
Staff reported two liner failures in the New Irvington Tunnel pre-disinfection inspections, removed and replaced affected sections, began staged regrouting up to 150 psi, and pushed disinfection to February 2015; the contractor has not requested extra pay.
San Francisco — The commission received a technical update on the New Irvington Tunnel (NIT) that included details of recent liner failures and the contractor's remediation plan.
Emilio Cruz described two near-identical liner failures discovered prior to disinfection. Staff said the contractor removed a 65-foot damaged section of…
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