The U.S. Army Corps of Engineers has awarded a contract worth US$564,000 to Emagineered Solutions Inc. for drilling and grouting services at the 2,160-MW John Day hydropower plant in Oregon.
The Corps' Portland District solicited responses in a sources sought notice issued this past December, after which Emagineered was found to be the only qualified firm to perform the work.
Per the Corps' notice, Emagineered will repair failed monolith joint waterstops by drilling a near-vertical six-inch hole that straddles the monolith joint, extending through the entire structure into the bedrock below, and filling the hold with expanding grout to restore the waterstop.
The Corps' Portland District awarded a $637,269 contract in December 2013 to J.E. McAmis Inc. for dam safety work to repair failed monolith waterstops at John Day. It awarded a contract in October to Knight Construction & Supply Inc. to replace wire rope and perform load testing for an emergency intake crane and took bids in September to refurbish thrust bearing shoes and thrust runners.