Concrete Solution to Toxins Beneath NuHart Development

Public can comment through April 24, 2024

The remediation of west section of 65-75 Dupont Street found contaminates beneath where they can safely excavate further.  A process called In-Situ Solidification (ISS) is being tested at the area, in which concrete is mixed with contaminates.  Photo courtesy of New York State Department of Environmental Conservation (DEC). 

65-75 Dupont Street, is the mixed-use development in construction that sits atop the NuHart Superfund site.  The site was built in the 1800s and used for manufacturing purposes to 1950. From 1950–2004 the site and associated manufacturing buildings to the east were used to produce, store, and ship plastic and vinyl products. The site was categorized as a Class 2 Superfund site in 2010 by the New York State Department of Environmental Conservation (DEC). 

Madison Realty Capital (MRC), the developer of 65-75 Dupont, has been remediating this site.  The remediation of eastern section of the development received a Certificate of Completion in December 2023.

In January 2024 it was discovered that phthalate contamination in some areas of the western section couldn’t be removed due to the potential for failure of the sheet pile wall and other dangers to the structural integrity.  Crews had dug 2.5 feet–5.5 feet deeper than the original plan of sixteen feet until it was not sensible to continue.

A community meeting held on February 15 was hosted by North Brooklyn Neighbors and joined by the DEC, the New York State Department of Health, MRC, the offices of NYS Assembly Member Emily Gallagher, NYS State Senator Kristen Gonzalez, NYC Council Member Lincoln Restler, and U.S. Representative Nydia Velázquez. This meeting was held to discuss a remedy to the contamination that would remain an estimated 4-5 feet below the floor of the pit. MRC and DEC proposed In-Situ Solidification (ISS), which, in basic terms, contains contaminated soil by mixing it with concrete.

A public comment period from March 25–April 24 will allow the community to convey their concerns and opinions on the change to the original agreement, which called for removal of all contaminants.  The DEC will host a public meeting via webex on April 10 at 7 p.m. Email comments can be sent to jennifer.gonzalez@dec.ny.gov.  To view project documents go to: https://extapps.dec.ny.gov/data/DecDocs/224136/

65-75 Dupont will yield 471 residences, 143 of which will be designated as affordable housing, as well as 189 on-site parking spaces and a grocery store. The site is bound by the confluence of Commercial Street and Clay Street to the North, Dupont Street to the South, and Franklin Street to the West.

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Author: The Greenline

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