REHABILITATION OF PIKES CREEK DAM

OWNER: Pennsylvania American Water

ENGINEER: Gannett Fleming

PROJECT TYPE: Rehabilitation of Existing Dam

LOCATION: Luzerne County, PA

DESCRIPTION OF PROJECT:

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