Oak-0000000922 - WRC: Walnut Lake No.2 Conveyance CAP Phase II

This project includes removal of an existing 78-inch and 66-inch diameter sewer siphon pipe connection between the Evergreen-Farmington Sanitary Drain and Great Lakes Water Authority (GLWA) to the 96-inch diameter sewer. The new alignment will be hand mined over the top of the existing siphon. This section of the sewer is owned by Detroit Water and Sewerage Department (DWSD) and leased/operated by the Great Lakes Water Authority (GLWA). The project details consist of: 1. Construction of a temporary in-line flow sewer bypass conduit using existing 78-inch and 66- inch diameter siphon. This project requires temporary flow control management. 2. Slip line and grout the existing 66-inch and 78-inch diameter siphon with a 54-inch pipe. 2. Modifications to the existing Junction Chamber, Riser Chamber, and Meter Chamber OC-S-1, including structural, electrical, and telemetry components. 4. Construction of new 66-inch diameter sanitary sewer between manhole SOT140007 and Junction Chamber 5. Construction of new 78-inch diameter sanitary sewer tunnel between the existing EvergreenFarmington Flume and Meter Chamber. 6. Abandoning existing 78-inch and 66-inch diameter sanitary sewers 7. Construction of a new sanitary manhole over an existing 96-inch diameter sanitary sewer located on the M-39 Southfield Freeway, with a 21-inch Diameter sewer connection with drop connection. 8. Construction of new 96-inch diameter sanitary sewer tunnel between the existing Junction and riser Chamber. 9. Abandoning existing 78-inch and 66-inch diameter sanitary sewers. 9. Abandoning existing 21-inch and 42-inch diameter sanitary sewers located in M-39 Southfield freeway and M-102 West Eight Mile Road. 10. Procurement and installation of a new 96-inch sluice gate, actuator, and establishing electrical connections. 10. Structural and site concrete work, asphalt paving, grading, and landscaping.