Graham Construction Services, Inc., has been selected for four civil infrastructure projects valued at a combined total of $76.1 million. The city of Corpus Christi, Texas, has hired the company to build a new $50 million wastewater treatment plant. The city of Minneapolis and the city of Parshall, N.D., have contracted with Graham for facility improvements and new construction. The U.S. Army Corps of Engineers, St. Paul District, selected Graham for dredging on the Mississippi River, near Kellogg, Minn.
Graham received a Notice to Proceed for construction of the city of Corpus Christi's new Broadway Wastewater Treatment Plant, which will replace the aging plant built in 1936. When completed in 2013, it will have the capacity to treat 8 million gal per day with a peak, two-hour capacity flow of 40 million gal per day.
The treatment plant provides preliminary treatment, secondary treatment, disinfection, effluent pumping, solids handling, odor control, standby electrical power generation, as well as operation, monitoring and control. Along with these services, city officials also expect the new facility to stimulate their economy, as construction will provide opportunities for local subcontractors and material and equipment vendors. The engineer on the project is Carollo Engineers of Dallas.
Federal stimulus dollars available through the American Recovery and Reinvestment Act are funding part of the improvements to the Dewatering Plant on the Fridley campus of the Minneapolis Water Works. Originally built in 1972, the plant is in need of repairs and enhanced efficiencies. The improved and expanded facility will be more energy efficient and help save taxpayers' money by utilizing new filter presses that remove excess water from the plant's solids, thus reducing the weight and the cost of hauling byproducts created by the filtering process.
To achieve the city's goals, Graham began working with Minneapolis-based HDR Engineering, Inc., on the dewatering plant project in October 2009 and anticipates completion in April 2011. The $19.2 million construction services contract involves building a two-story, 24,000-sq-ft Press Building addition. It also includes assisting with improvements to the plant's gravity thickeners, plate and frame filter presses, centrifugal pumps, slurry pumps, sludge strainer assemblies and a bridge crane and monorail hoisting system.
The U.S. Army Corps of Engineers, St. Paul District has contracted with Graham to excavate and transport approximately 643,000 cu yd of stockpile dredge material using a hydraulic dredge system. The material will be dredged from Fisher Island and transported nearly four miles to an upland site on the Mississippi River. The work will require the use of dozers and an excavator to assist in the movement of soil toward the dredge and in shaping the final areas. The project is estimated at $3.8 million with an anticipated completion in July 2010.
To provide fresh water from Lake Sakakawea to North Dakota's city of Parshall's new Water Treatment System, Graham is constructing a 10-ft-diameter precast concrete caisson, wet well, pumping structure with an overall depth of 138 ft. Through a 1,750-linear-foot directional drilling method, Graham is installing a 12-in.-high density polyethylene pipe and a new intake screen that will draw water from Lake Sakakawea to fill the wet well, providing water for the treatment plant. The project is expected to be complete in June 2010. The total construction contract is estimated at $3.1 million.
Source: Graham Construction Services
