Kiewit consistently ranks as one of the country's top contractors in the delivery of water and wastewater projects, according to Engineering News-Record (ENR). The 2015 ENR Sourcebook rankings list Kiewit as the No. 1 contractor for dams & reservoirs and water supply categories, as well as No. 2 for water treatment desalination lines, No. 3 for water transmission lines and No. 4 for sanitary and storm sewers. Kiewit’s water/wastewater portfolio includes major roller-compacted concrete, earth-fill and rock-fill dams; reservoirs; water tunnels; and canals across North America, as well as transmission pipelines, aqueducts and water/wastewater treatment facilities. Over the past 10 years, Kiewit provided procurement, construction and/or start-up services for 400 water/wastewater projects totaling more than $6.5 billion in contract revenue.
The $11 million project involved installing 7,000 linear feet of pipeline, a two-million-gallon concrete reservoir, a booster pump station, consisting of five vertical turbine pumps, water treatment facilities, a new arsenic treatment system and a well development. To increase the station's water distribution pressure, crews constructed each zone with three 100-horsepower and two 75-horsepower vertical turbine pumps with variable frequency drives, which extend down 37 feet into a header, supplied with water from the bottom of the reservoir.
Kiewit Pacific Co. constructed the world's largest prestressed concrete tanks. The $86 million Hollywood Hills Quality Improvement Project consisted of two 30-million-gallon underground water storage tanks and a 1-mi.-long tunnel bypass system to provide safe drinking water for nearly 500,000 customers in the Hollywood area.
Part of restoring the Everglades to an ecologically balanced condition by reducing levels of phosphorous in the water created from farmland storm water run-off, the $2.3 million project included installing a new intake and pump station in Palm Beach County, Fla. Due to the remote location in the Everglades, Gilbert Southern Corp. maintained an on-site office throughout construction.
A Kiewit-led joint venture was selected in December 1997 to construct a key component of the new $2.2-billion water delivery and treatment system for the Las Vegas valley. This $83-million project involved constructing a 12-ft.-dia. intake shaft positioned 240 ft. below Lake Mead's surface, capable of handling 600 million gallons of water per day.
In May 2000, Kiewit Pacific Co. was selected to construct this $98 million, 12 MGD water treatment plant. The project consists of 31 structures, including an administration building, three oxidation ditches, four secondary clarifiers, two waste-activated sludge tanks, a solids handling basin, a chlorine contact basin, filter building, chemical feed building and influent pump station.
Kiewit Pacific Co. completed Phase II of a $42 million contract to improve water quality and plant operations at the Penitencia Water Treatment Plant. The project scope included the construction of a two-story, 7,200-square-foot ozone generation building, an ozone contractor structure and a liquid oxygen storage and vaporizer structure.
This $13 million project involved construction of two new pump stations, which included all structural, architectural, mechanical, and electrical requirements. At the request of the local community, the project team worked together with the owner to redesign and offer solutions to ultimately satisfy the local concerns regarding the aesthetics, which resulted in a Tuscan style building exterior. This project required extensive coordination with local residents, which included door-to-door contact, meetings, and flyers within the community.
Kiewit Pacific Co. is constructing the existing surge shaft in two phases to install 550 vertical feet steel pipe 96 inches in diameter. The team engineered and performed the water treatment, collection system and road improvements.
Lake Mead Constructors was selected to construct this $146 million 150-mgd water treatment plant. The project later expanded to include an additional $31 million 150-mgd phase. During construction, the project team took steps to minimize impacts to the surrounding community by applying several aesthetic enhancements and establishing an on-site concrete batch plant to reduce truck traffic.