McCarthy begins work on $143 million groundwater replenishment system in US
3 February 2012US-based McCarthy Building Companies, Inc., has begun construction work on the $142.7 million Initial Expansion of the Groundwater Replenishment System (GWRS) for the Orange County Water District (OCWD) on Ward Street in Fountain Valley, California.
The project will create an additional 31,000 acre-feet per year (AFY) of new water supplies to serve north and central Orange County. McCarthy will construct a 30 million gallon per day (MGD) treatment facility expanding the 70MGD GWRS that was completed in 2008. Work also includes expansion of the existing microfiltration facility by constructing eight new below-grade treatment basins and enlarging the existing basement facility. Other work includes construction of a new 32,000 square feet reverse osmosis building, the installation of five new ultraviolet light (UV) treatment trains to match the existing systems, as well as retrofitting the existing post treatment systems to employ a new lime feed system. The company will also construct two above ground steel tanks, each is 215 feet in diameter with a height of 35 feet and a capacity to hold 7.5 million gallons of water. Upon completion, the AWFP’s total production will reach 103,000 AFY, enough water for 850,000 people. Construction work is scheduled to complete in September 2014.
