Project Showcase 2018: Barnard Construction Company
Lake Mead Intake No. 3 Low Lake Level Pumping Station Project and the Lake Mead Low Lake Level Pumping Station Discharge Aqueduct Project
Description of the projects:
Serving the Southern Nevada area, where the main concern is the decreasing water level of Lake Mead, the area’s primary water source, the Southern Nevada Water Authority (SNWA) is dedicated to providing continued delivery of water to its more than 2 million users. To assist in this effort, Barnard Construction Company, Inc. (Barnard) contracted with SNWA to complete the Lake Mead Intake No. 3 Low Lake Level Pumping Station (L3PS) Project and the Lake Mead L3PS Discharge Aqueduct Project.
Initially providing preconstruction services in the design phase, Barnard is now entering into its third year of construction at the site. As part of the Intake No. 3 L3PS Project, Barnard is constructing an access shaft, 34 well shafts, and a forebay cavern that will connect the Low Lake Level Intake with the new Intake No. 3 L3PS. On the L3PS Discharge Aqueduct Project, Barnard is installing approximately 5,291 feet of 40-foot-long, 144-inch-diameter aqueduct pipe to transport water from the L3PS to the nearby Alfred Merritt Smith and River Mountains Water Treatment Facilities.
Image caption: Forebay cavern on the Lake Mead Intake No. 3 L3PS Project.
Image caption: Installing 144-inch-diameter aqueduct pipe on the Lake Mead L3PS Discharge Aqueducts Project. Photo credit: Derik Olsen for Barnard Construction Company, Inc.
Keeyask Generating Station
At a remote construction camp nearly 1,000 km north of Winnipeg, Manitoba, BBE Hydro Constructors LP (BBE), a limited partnership between Bechtel, Barnard, and EllisDon, continues work on the 695 MW Keeyask Generating Station Project. After contributing to design and constructability through Early Contractor Involvement (ECI), BBE is now constructing a seven-unit powerhouse, seven-bay spillway, three zoned rockfill dams, two earthfill dykes, and cofferdams to reroute the lower Nelson River. In 2017, the project’s fourth year of construction, BBE reached a major milestone by completing the spillway.
he team has turned the structure over to Owner Manitoba Hydro and its partner First Nations, Tataskweyak Cree Nation, Fox Lake Cree Nation, York Factory First Nation, and War Lake First Nation for gate installation. Once the gates are installed, BBE will possess the structure again to divert the river into the spillway for the next phase of river management.
Image caption: A look inside the Keeyask powerhouse. Photo credit: Derik Olsen for Barnard Construction Company, Inc.
Image caption: BBE Hydro Constructors LP reached a milestone by completing the spillway and turning the structure over for gate installation. Photo credit: Derik Olsen for Barnard Construction Company, Inc.
For more information, visit Barnard.