ISRA Investigation & Remediation - A Case Study


Project Highlights:

•  Toxicology study concluded dioxin compounds, if encapsulated, would not pose a risk to the environment.

•  Asphalt/Concrete composite cap coupled with a Deed Notice which permitted restricted residential use resulted in No Further Action letters.

Facility:

Metal Barrel and Drum Cleaning and Reconditioning Facility, Newark, NJ

Regulatory Involvement/Program:

New Jersey Department of Environmental Protection (NJDEP)/

Industrial Site Recovery Act (ISRA)

The Problem:

The site was severely impacted by dioxins, pesticides, heavy metals, carcinogenic PAHs, volatile organic and base neutral compounds. Contaminated media included soil, groundwater, and interior building surfaces.

The Solution:

Hudson was retained to address the widespread contamination and secure No Further Action (NFA) letters from the NJDEP.

Remedial Alternatives Analysis:

Building Interior

Four options were evaluated:

Demolition, scarification (i.e. removal of a thin layer of concrete), steam/pressure wash, and encapsulation. Hudson determined that steam/pressure wash would remove most contaminants and encapsulation would eliminate the slight future exposure risk.

Soil

A significant area of soil contamination existed (> 2 acres ). Engineering controls to eliminate exposure to the contaminated soil and a Deed Notice (DN) were the only economically feasible alternatives.

Groundwater

Although soil was severely impacted, groundwater was only minimally contaminated. Establishment of a groundwater Classification Exception Area (CEA) was determined to be the preferred solution.