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03576 Ewen Maddock Dam, Dam Safety Upgrade Stage 2 Project

Agency Seqwater
State Queensland
Type Invitation to Offer
Category 72000000 - Building and Construction and Maintenance Services - (98%)
Description

Seqwater is seeking Proposals for the construction of the Ewen Maddock Dam, Dam Safety Upgrade Stage 2 Project.

The works generally includes:

•Temporary works for the lowering of the reservoir to 60% capacity, (2 m metres below Full Supply Level (FSL)), by use of a temporary cofferdam with release gates.
•Site mobilisation- inclusive of establishment, access roads, facilities, stockpile sites, access routes, etc.
•Clearing of proposed vegetation, protection of endangered flora
•Upgrade the existing earth fill embankment with sand filters and internal chimney filters
•Raise the existing earth fill embankment to increase flood capacity with a concrete parapet wall
•Raise and strengthen the concrete spillway
•Install emergency outlet gates in the spillway to enable reservoir drawdown in the case of a dam safety incident
•New Fishway - design, construction and commissioning
•Other necessary works as part if the upgrade

For detailed information on the specificworks sought under this tender, please review the "Specification Documents"

Closing Date 10 Jun 19
Link 03576 Ewen Maddock Dam, Dam Safety Upgrade Stage 2 Project
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