OENJ Bayonne Bentonite Clay Cutoff Wall
Client Name: OENJ Cherokee Corporation
Phase One for procurement of dredge capping material.
The OENJ Cherokee Corporation (“OENJ”) Bayonne site consists of former industrial land south of the Military Ocean Terminal on the Constable Hook in the City of Bayonne, New Jersey. The property is bounded on the North and East by the Upper New York Bay and on the South by several chemical manufacturing and industrial facilities. The site was part of the New York Bay until the early 1900s, when the Constable Hook area was filled with various wastes and fill material during the period from about 1910 to 1983.
The project included a 38-acre former municipal landfill and a 97-acre industrial fill site formerly owned by PSE&G. OENJ later properly capped and closed the former landfill and remediated and capped the former PSE&G site using approximately 4.5 million cubic yards of amended dredged material from the New York Harbor, and other recyclable materials. Once the site was remediated and capped, it was developed into an 18 hole golf course named the Bayonne Golf Club. Additional amenities include a club house, wetlands refuge area, and perimeter public waterfront walkway, ferry terminal and heliport.
There are several environmental issues to be addressed in order to fully remediate the site. Phase One consisted of constructing the Bentonite Clay Slurry Wall necessary to hydrologically isolate the site and prevent further contamination to the New York Bay and surrounding area. The containment of the site was required by the New Jersey Department of Environmental Protection (”NJDEP”) before any further environmental improvement and procurement of dredge material necessary to cap the site could be initiated. The 300,000 sf continous Bentonite Clay Slurry Wall extends 14,000 lf to a maximum depth of 47 ft, which keys into an underlying geological impermeable layer. The wall prevents the lateral movement of goundwater on and off the site. By preventing any migration of groundwater onto or off the site, thus allowing leachate collection and treatment systems within the site to work more efficiently.