Kiewit Southern Co. was awarded the $11 million project to design and construct the Pembroke Pump Station. The team constructed an at-grade precast panel pump station, four 40-cubic-feet-per-second pumps with 30-inch-diameter expansion joints, back-flow gates and butterfly valves that are connected to a 64-inch-diameter steel header pipe.
The $9.5 million rehabilitation project included the complete removal and rehabilitation of seven horizontal, axial flow pumps. For the Pump Stations S7 and S8 project, Kiewit also had to re-machine the propellers and replace bearings, reconfigure the pumps basins, and a telemetry package.
The scope of work included demolition of the existing hopper bottom, metal roofed reservoir, the construction of a new 20 MG cast-in-place reservoir, installation of chemical feed piping, level sensors, transmitters and associated conduits and control wiring.
The Union Hills Water Treatment Plant Rehabilitation project involved the complete replacement and upgrade of half of the plant’s 5kV electrical feed, including construction of a new electrical building expansion and 2,500+ LF of new ductbank installation amidst numerous existing utilities. New electrical switchgear and motor control equipment were furnished to upgrade the plant’s finished water pump systems.
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.
At $192 million, and located on 80 acres, Prairie Waters is the largest project ever undertaken by Western Summit without a joint venture partner. When finished, this state-of-the-art water purification facility will increase water supply by 20 percent, or about 3.3 billion gallons per year.
WSCI’s eleventh project for the City of San Diego, this $24.7 million, two-phase upgrade created a state-of-the-art facility that satisfies federal and state drinking water regulations. The plant provides 34 MGD of potable water to customers in three of the growing region’s major water service areas.
A major component of San Diego’s capital improvements program to meet the water needs of its fast-growing population, this project increases WTP capacity from 140 to 215 MGD and provides a state-of-the-art facility with a 75-year design lifespan.
To meet the needs of a rapidly growing population, Western Summit, in conjunction with Carollo Engineers, designed and built a $43-million, 15 MGD expansion to an existing WTP serving the City of Mountain House, California, including a vast new subdivision. The entire project was completed in less than two years.