Contech equips symbolic site

12 Contech 300An Ohio-based innovator in concrete and composite drainage structures, Contech Engineered Solutions supplied a new stormwater detention system to Liberty Park, an elevated public space adjacent to the new World Trade Center in New York City. Scheduled for completion in 2017, Liberty Park will have a capacity of 750 people and sit 25 feet above Liberty Street, overlooking the National September 11 Memorial & Museum.

To meet NYC Department of Environmental Protection regulations, a detention structure was needed to temporarily store park runoff exceeding the site’s allowable discharge rates, and release collected volume slowly over time. Detention system water tightness is especially critical as the park is perched on the WTC Vehicular Security Center.

Contech consulted with Port Authority of New York & New Jersey engineers, who specified a stormwater detention system made of nearly 200 linear feet of DuroMaxx Steel Reinforced Polyethylene, affording about 2,500 cu. ft. of storage. Liberty Park is one of many World Trade Center aspects taking shape as developers prepare for next year’s One World Trade Center (background) opening.