Posted by on Mar 27, 2012 in Marine/Dam, Waterafll | Marine/Dam | 0 comments

Waterfall Hills Spillway Replacement  | Canton MA

Installation of erosion and sediment control devices. Installation of temporary cofferdams and bypass piping. Removal and disposal of the existing spillway structure. Excavation of existing stone fill and rip rap in the project area, stockpiling for reuse. Placing downstream rip rap scour protection. Removing the temporary cofferdam, bypass pipes and associated back-filling. Clean site, restore impoundment elevation and disturbed areas, and demobilize.

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Chestnut Hill Realty (needs approval from client to use their name)
$336,910
Installation of erosion and sediment control devices. Installation of temporary cofferdams and bypass piping. Removaland disposal of the existing spillway structure. Excavation of existing stone fill and rip rap in the project area, stockpiling for reuse. Construction of a new spillway section inclusive of: a) excavation and installation of seepage cut-off wall. b) Construction of the cast in place concrete spillway foundation, spillway and associated walls. c) Installation of a low level outlet conduit. d) Back-filling of the spilway structure. e) Installation of scour protection and spillway facing.

Placing donwstream rip rap scour protection. Removing the temporary cofferdam, bypass pipes and associated back-filling. Clean site, restore impoundment elevation and disturbed areas, and demobilize.