Water. Desalination + reuse
Issue link: https://fhpublishing.uberflip.com/i/545366
PROJECTS | 18 | Desalination & Water Reuse | August-September 2015 PROJECTPROGRESS NV5 wRaPS CaRlSbad dESigN aNd CONSTRuCTiON SuPPORT SERViCES Engineering consultancy NV5 Holdings has completed the design and construction support services for the power supply to the Poseidon desalination plant in Carlsbad, California. "NV5's use of cutting-edge technology, such as a 3D high-definition scanner and advanced 3D modeling software, along with unique and creative design approaches, were key to the successful completion of this project," said power group director at NV5, Doug Taft. NV5 worked with a southern California utility company on underground trenching, structural designs to support above-ground conduits, and a special above-ground vault system design that enabled four 12kV distribution circuits to feed the plant. The consultant took a novel approach to support fibreglass conduits using steel supports in the abandoned Encina storage facility pit. The Poseidon desalination plant project won three major plaudits in recent weeks, including an award from the American Public Works Association (APWA), the 2014 Outstanding Energy Project Award from the American Society of Civil Engineers, and a 2014 Honourable Mention for Public Works from the Construction Management Association of America. Piped aboard Construction of a 15 km pipeline connecting the near-complete giant Carlsbad desalination plant to the San Diego County Water Authority's distribution system is complete. Pending regulatory approval, the US$ 1 billion, 250 Ml/d Carlsbad facility is expected to start operation in the autumn. "The entire construction project is entering its final phase," said vice president of Carlsbad's builder, Peter MacLaggan. The plant is expected to deliver enough water to serve about 112,000 families, and meet 7-10% of the San Diego region's water demand, according to Poseid Chairman of the water authority, Mark Weston, said: "We are particularly eager to start receiving the benefits of this project given the severe drought conditions faced statewide." TExaS TOwN REuSE PROJECT NEaRS CONSTRuCTiON A proposed, US$ 2.4 million water reuse project in Olney, Texas has moved closer to the construction phase following a city council environmental review public hearing. The findings from the meeting will go to the final state review. The process will take six to eight weeks according to city officials. Many Texoma towns are emerging from drought, but Olney is still in stage four drought restrictions and its leaders said the reuse system was necessary. The city's reservoirs, Lakes Olney and Cooper, have risen three metres in recent weeks but the two lakes have not yet reached capacity. Hence city officials said they do not want to have to rely on rain alone. "It just makes sense," said Olney city manager, Danny Parker. "The water leaving the wastewater treatment plant is good water, and I just think it makes sense to take it and reuse it." Based on the worst-case scenario, officials said consumers would be charged an extra US$ 5.63 each month. That could decrease as interest rate discussions continue. "Our citizens haven't given us a lot of grief over this," said Parker. "I think they understand the situation and they've been through these droughts before, so they kind of know what's going on." The bidding process for the project construction will begin once state officials approve the review. City officials expect to break ground on the project this summer. Carlsbad: connection to San Diego network is complete