Nicholson and Grant County PUD Back Together for Wanapum and Priest Rapids Dams Foundation Drains Project

October 28, 2019
Salt Lake City, Utah


Nicholson Construction was recently named as the General Contractor by Grant County Public Utility District for remedial work on of two of their dams, Priest Rapids and Wanapum Dam.

Nicholson’s work will be focused on reconditioning foundation drains by core drilling 3.375-inch diameter oles on both dams that may be experiencing reduced flows or blocking by unknown materials or foreign objects including calcium carbonate deposits.

Priest Rapids Dam’s scope includes 128 drain holes located in the upstream gallery at the dam’s powerhouse and left bank fish facilities. Wanapum Dam will have 290 drain holes drilled in the upstream gallery.

Other work scopes for the project included flow and pressure measurements on all drain holes and video inspection on selected holes.

“It’s great to be back at both Wanapum Dam and Priest Rapids Dam,” said Paul Krumm, Operations Manager for Nicholson’s Salt Lake City office. “We’re extremely proud of the work that we’ve done at both dams over the years and we look forward to adding another successful project to our history together with Grant County PUD.”

Previous projects with Grant County PUD include post-tensioned anchor installation to repair a crack in Wanapum Dam’s spillway and several projects, including investigative coring,for Priest Rapids Dam.

Nicholson’s portion of the work on Priest Rapids Dam will be completed by December 31 and at Wanapum Dam in May of 2020.

About Nicholson Construction Company

Nicholson has been both a leader and an innovator in the geotechnical construction industry for more than 60 years. With regional offices across the country and headquarters located in Pittsburgh, Nicholson is a nationally renowned specialty contractor, offering proven expertise in the design and installation of deep foundation elements, earth retention systems and ground treatment solutions. We pride ourselves on our ability to consistently provide our clients with innovative, high-quality design-build options for projects of varying size and complexity. Nicholson is the North American subsidiary of Soletanche Bachy, one of the world's leading geotechnical contractors, and is part of a global network of unparalleled geotechnical resources and expertise.