Moosomin Dam Relief Wells Drilling

Tender details

Moosomin Dam is located 12 kilometres south of the Town of Moosomin, SK on Pipestone Creek. The dam was constructed in 1954 by the Prairie Farm Rehabilitation Administration (PFRA). The reservoir is currently used primarily for recreational purposes, including various cottage developments on the lakeshore west of the Dam.To manage the phreatic surface through the main embankment dam, a series of 17 relief wells were drilled in the toe of the dam shortly after original construction. The relief well materials of construction vary as this site was used for testing purposes, including the use of helcore, transite, no-corrode, and plywood piping. This piping is end of life.WSA intends to install new, modern stainless steel relief wells to better manage the phreatic surface through the main embankment dam & foundation of the Moosomin Dam. This project includes:Installation of five (5) stainless steel pressure relief wells, complete with:Steel surface casingTemporary well headStainless steel well screensSand, grout and other ancillary materialsInstallation of three (3) stainless steel monitoring wells. The construction of the monitoring wells is typical of the pressure relief wells.Well development, testing and well commissioning.Decommissioning the existing pressure relief wells by drilling to remove existing casing and filter pack before sealing with grout.