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OWNER: Pennsylvania American Water

ENGINEER: Gannett Fleming

PROJECT TYPE: Rehabilitation of Existing Dam

LOCATION: Luzerne County, PA


Remove and replace existing primary spillway, repoint and post tension anchor auxiliary spillway. Work activities include:

  • Clearing and Grubbing

  • Design, installation and operation of a temporary dewatering wells

  • Design, installation and removal of a earthen and porta-dam cofferdams

  • 40,000 cy of rock excavation for new auxiliary spillway and channel

  • Demolition of the existing concrete auxiliary spillway

  • Rock anchors for new auxiliary spillway

  • Installation of a new 2,500 CY cast in place auxiliary spillway sill

  • Install pre-cast Fusegate Control Structures at auxiliary spillway

  • Installation of downstream embankment toe filters and foundation drainage system

  • Placement of 42,000 cy of select fill at embankment

  • 5,200 cy of rip rap protection at upstream embankment

  • DIP Outlet conduit modifications

  • Concrete restoration of main spillway

  • Abandon existing piezometers

  • Furnish and install new piezometers

  • Demo existing upstream underwater closure valves and aeration system

  • Furnish and install new underwater closure valves and aeration system

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