Deep Well DewateringAnn Arbor, MI

OverviewWe installed a deep well dewatering system approximately 25 vertical feet below ground surface for the installation of the 60” sanitary sewer on the Fuller Road Phase I Interceptor Relocation project in Ann Arbor (MI).

MethodologyBased upon our review of the plans and specifications provided, we installed a deep well dewatering system consisting of 12 deep wells and a single generator unit. We also provided a bypass pumping system capable of delivering flows up to 40cfs to temporarily bypass the existing 60” sanitary sewer for the connections required on the project. The suction point was the existing manhole, and the discharge point was the existing vault, located approximately 1,000’ away.

HighlightsModifications to the manhole were required to meet the engineer’s specifications for flow requirements. The existing grade around the manhole needed to be lowered to elevation approximately 12’ to provide for a suction lift of 16 vertical feet to grade. This required the temporary removal of the existing 12” storm sewer located North of the manhole. Modifications to the downstream vault 5-4 were also required to provide sufficient access for the three 18” HDPE bypass lines. The system was completed with suction piping and all discharge manifolds required to bypass around the connection areas.

Project Contact:Bill Rizor269.420.0772

Project Value:$123k

DEWATERINGFULLER ROAD PHASE IINTERCEPTOR RELOCATION

Address: 10162 East Coldwater Rd. Davison, MI 48423Phone: 810.658.3472Fax: 810.653.7828

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