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Norwalk Substation
Norwalk, CT

This work, in a live substation, included excavating and disposing of contaminated materials, installing soldier piles and lagging for temporary support, installing the permanent Doublewal retaining wall system, installing a 10'x20'x10' electrical vault and 5 storm manholes, installing 1000 lf of ductbank (performing the excavation and placing the concrete), installing drilled shaft foundations 6" diameter x 30' deep, erecting firewalls 15' high, and spreading yard surface stone. BAC placed 50,000 cy of fill, built the foundations for 2 control rooms, erected 2000 lf of Doublewal that was 15' high, constructed 100 bus support foundations, and paved. Storm drainage and an oil separator tank were installed to prepare the captured water for discharge into the river.
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