McNary Potable Water Upgrades

The US Army Corps of Engineers (USACE), Walla Walla District is seeking business sources for a construction project entitled: McNary Lock & Dam Potable Water Upgrades. The work is located at McNary Dam on the south shore of the project footprint located in Umatilla County, Oregon. The project involves upgrading the existing McNary Dam Potable Water Distribution System through a construct contract to replace existing potable water piping. The new water distribution system construction effort will include pipe trench excavations, valves and valve groups subsurface enclosures, and demolition of some existing valve groups and piping. • The new potable water pipeline will be fed from an existing common tie-in point. • Demolition will be required on some of the old pipelines locations. • Modifications to existing concrete vaults, as well and provision of a new valve vault will be required. • The work includes the installation of two parallel 8-inch pipelines along a 1,400-foot section and a third 8-inch redundant line approximately 240 feet long. • The total project involves installing approximately 3,040 linear feet of new pipe. • Ancillary site work to include demolition of abandoned rail road ties, earthwork repairs to areas of gravel settlement, and replacement of an adjacent concrete slab. • Requirements during construction include the presence of a Site Safety and Health Officer (SSHO) and a Contractor Quality Control Manager (CQC) on site at all times when work is performed.