Manchester: Spillway Modifications Downstream Imp Beech Creek Dam. The project consists of the following main activities: Demolition of existing emergency spillway structure. Removal of loose material located in the spillway channel. Construction of a new emergency spillway structure and cut-off walls. Installation of the grout curtain system along the emergency spillway. Excavation to widen the downstream spillway chute. Abandonment of existing foundation drains and reservoir fill piping. Relocation of reservoir fill piping. Construction of the downstream embankment blanket drain system. Construction of toe drains. Installation of erosion prevention and sediment control measures. Bids due 06/23

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