Contaminated Walden site to be cleaned up


29 Grant Street – more than a century of industrial use

WALDEN – Work will begin shortly to address the contamination related to the former Packaged Lighting Systems, Inc. site at 29 Grant Street in Walden. The work will be performed under the state’s Brownfield Cleanup Program by the estate of Hy Hilzen and Grant Street Factory, Inc. with oversight by the state Department of Environmental Conservation.
The remediation will continue monitoring an interim measure that was completed to treat chlorinated solvent contamination in groundwater, specifically consisting of in-place chemical oxidation using injections of iron-activated persulfate.
The plan also includes maintenance of a cover system of paved parking areas and/or at least two feet of clean soil to prevent human exposure to contaminated soil or fill at the site, and installation of a sub-slab depressurization system in any occupied structures to reduce concentrations of sub-slab vapors and prevent mitigation into indoor air.
The 1.5-acre site contains three vacant structures including a large three-story warehouse, an adjacent two-story office building and a two-story wooden structure. There is also a parking area and landscaping.
The site has a history of industrial use dating back to the mid-1800s. From 1885 to 1894, it was operated by the Rider Engine Company, a manufacturer of steam engines. From 1900 to 1939 it operated under the name Rider-Ericsson Engine Company and continued to manufacture steam engines.
From the 1920s until 1967 the facility was operated by Spence Engineering, a manufacturer of steam regulators and valve mechanisms. From 1968 until 2008, it was used by Packaged Lighting Systems, Inc., which designed unique lighting systems for New York City theaters. 

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