As part of Xcel’s compliance with the Colorado Public Utilities Commission’s approved emissions reduction plan under the state’s Clean Air-Clean Jobs Act (CACJ), the utility will retire its coal-fired units at Cherokee Station located in Denver, Colo. Xcel Energy retired Unit 1 (107 MW) in May 2012 and Unit 2 (106 MW) in October 2011; Unit 3 (152 MW) will be retired in 2015, and Unit 4 (352 MW) will be converted to natural gas in 2017. The new Cherokee 569-megawatt 2x1 Combined Cycle Power Plant will provide replacement power at the Cherokee Site.
Kiewit was selected by the City of Somerton for the expansion of their Sequential Batch Reactor (SBR) Wastewater Treatment Plant (WWTP). Prior to the design commencing, Kiewit performed cost modeling and constructability reviews to aid in the determination if a Biological Nutrient Removal Process (BNR) design would be more beneficial than the original concept. Kiewit provided anticipated construction costs and schedules for the conversion of the existing SBRs to a BNR. Kiewit performed the same analysis in developing the cost and schedule for the construction of additional SBRs. These side by side comparisons allowed the selection of the best value expansion approach for the WWTP. The BNR approach was selected and increased the current .8 MGD to 1.8 MGD for an addition of .6 MGD in capacity from the original concept.
To ensure the stability of the suspension cables at Verrazano Narrows Bridge, Kiewit installed dehumidification systems and replaced bridge deck joints to prevent water infiltration. During construction, absolutely no damage was done to the cables due to extensive coordination and planning by crews.
The vivaNext - H3 Project is part of York Region Rapid Transit Corporation's plan for the next generation of rapid transit. The project includes the construction of rapidways — dedicated centre bus lanes — and 22 state-of-the-art station platforms. The 6.4-kilometre project will transform the Highway 7 corridor into a visually appealing and pedestrian-friendly environment.
Kiewit constructed the $7.8 million Hickam Air Force Base Dormitory and the $5.2 million Hickam Hanger Complex for the U.S. Army Corps of Engineers. The dormitory is a three-story, 38,300-square-foot building that houses enlisted military personnel. Construction of the hangar included upgrading the fire alarm and sprinkler systems for Hangars 34 and 35.
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.
The 8-mile I-15 FasTrak™ program, located between Kearny Mesa and Rancho Penasquitos, allows single occupancy vehicles to pay a fee to use the high occupancy vehicle lanes. Since the program's inception, the average daily traffic on the carpool lanes has increased from 9,400 to 20,000 vehicles per day.
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.