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Catskill/Delaware Ultraviolet Treatment Facility
The Catskill/Delaware water supplies facility located in Valhalla in Westchester County, New York provides up to ninety percent of the nearly two billion gallons of water consumed by the City of New York on a daily basis. The new Ultraviolet Light Disinfection Facility will treat the 2,020-MGD water flow for biological contaminants.
The MEP services provided to the NYC Department of Environmental Protection included the design and construction management for an extensive and intricate HVAC system design for this facility. Project responsibilities included value engineering, inter-discipline coordination, cost estimating, applications for permits, assistance in bidding, and the direct supervision of three HVAC designers.
Highlights of the design include a hot water boiler plant with three 300 HP boilers serving three primary zones, desiccant dehumidification (humidity control) systems serving the main pipe galleries totaling 124,000 CCFM including a spare unit and complex interconnecting ductwork for redundancy, the utilization of raw water from the facility to provide approximately 500 tons of “free cooling” to numerous air conditioning units through a three loop, stainless steel heat exchanger system, (The system was equipped with redundant pumps, heat exchangers and piping to prevent system failure.) and a dedicated smoke removal system sized to serve the approximately 1.6 million cubic feet of the main UV piping gallery.
Owner: New York City Department of Environmental Protection |
Location: Valhalla, NY
Cost: $58 million
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