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West Ashley Sewer Tunnel Replacement

Rohadfox provided construction resident engineering services for all work performed at Plum Island Wastewater Treatment Plant. This new construction of a new tunnel involved drilling a 1.6 mile long, 120-foot-deep tunnel under the Wappoo Cut to the Plum Island Wastewater Treatment Plant. The project included construction of a 60-MGD pump station within the downstream tunnel shaft at Plum Island, and new discharge piping. The 130-ft deep shaft provided tunnel access for the boring activities. A new 48-inch-diameter elevated pipeline will extends from the new pump station, along the southern edge of the island for discharge to the plant head-works. This project increases convenience capacity to 48 mgd.

Client:
The City of Charleston
Location:
Charleston, SC
Project Value:
$50.8M
Market Sector:
Water & Wastewater

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