The Pilot Study performed in the Turning Basin 4 of the Gowanus Canal was successfully completed December 2018. Since then, the (the Team) has incorporated the results and lessons learned from this Pilot Study into the design documents for the remediation of the Remedial Treatment Area 1 (RTA-1) (see map). Since the completion of Turning Basin - 4, the 90% and 100% [...]
A technical advisory group that is part of the United States Environmental Protection Agency (USEPA)’s Superfund process and established to monitor progress and provide technical counsel on complex aspects of a cleanup project. The group is comprised of representatives from EPA and the Army Corps of Engineers.
A Non-Aqueous Phase Liquid (NAPL) that is heavier than water. These will sink to the bottom of a waterway as opposed to light non-aqueous phase liquids, like oil, that may appear as sheens on top of water.
Installed in 1911 and reactivated in 1999, the flushing tunnel is a large propeller that moves water into and out of the Gowanus Canal either through a brick-lined 1.2-mile (1.9-km) tunnel via Butler Street to Buttermilk Channel (between lower Brooklyn and Governor’s Island) or through the mouth of the Canal that opens into New York Harbor.
A modified clay specially designed to trap hydrocarbons like Non-Aqueous Phase Liquid (NAPL) through adhesion while allowing water to pass through. This material is effective in many multi-layer engineered capping applications to prevent transport of NAPLs into the water column. Commonly found bentonite or hectorite clay is altered to produce the oleophilic clay.
Polychlorinated biphenyls have a range of toxicity and vary in consistency from thin, light-colored liquids to yellow or black waxy solids. PCBs were used in hundreds of industrial and commercial applications including electrical, heat transfer and hydraulic equipment; as plasticizers in paints, plastics and rubber products; in pigments, dyes and carbonless copy paper; and many other industrial applications.
These organic chemicals are formed during the incomplete burning of coal, oil and gas, garbage, or other organic substances. They are found in tar, crude oil, creosote and roofing tar and are common in areas with high rates of development and motor vehicle traffic.
Parties that may have contributed waste to the site. The United States Environmental Protection Agency (USEPA) uses document reviews, site investigations, interviews, information supplied in response to information request letters, and title searches to determine a party’s liability for cleanup at a Superfund site.
A study of alternatives considered for remediation of a hazardous waste site and the rationale for selecting a recommended alternative. The PRAP is based on the site’s Remedial Investigation (RI) and Feasibility Study (FS). The PRAP is reviewed by the public, state agencies, and other parties. See PRAP section.
A phase in the Superfund process done in conjunction with the Feasibility Study (FS). This investigation characterizes site conditions, determines the nature of the waste at the site, assesses the threat to health and the environment and evaluates the performance and cost of different cleanup remedies.
Organic compounds that can become a gas at room temperature. VOCs are the leading cause of ground-level ozone. Common sources which may emit VOCs into the air include housekeeping and maintenance products; paints, coatings, and inks; and building and furnishing materials.