4-75 48th Ave, Long Island City, NY 11101

Hunters Point

brownfield VOCs SSDS "vapor intrusion"

Queens West Development Corp., Avalon
Site Description[1]
Parcel 9 of the Queens West development is bounded by 5th Street on the east, 48th Avenue on the south, Center Boulevard on the west, and 47th Road on the north. Surrounding parcels include Parcel 8 to the west (BCP site #C241087), OU-2 (Site # V00505B) with residential and commercial buildings to the north, and mixed uses to the south, including residential buildings, retail, a day care and a school. The Site was occupied by industrial uses since the 1890's. The eastern end of the Site was occupied by varnish or paint manufacturers from at least 1915 until the 1970's. The western portion of the Site has been occupied by a variety of manufacturing uses, including the Blau Gas Company of America in the early 1900's, an asphalt company, the Harlem Chemical Company, a plumbing supply manufacturer, a refrigeration equipment manufacturer, a barrel manufacturer, and an auto repair shop. Investigations were conducted at the Site in 1985, 1989, 1998, and 2000. The site has completed environmental remediation under the BCP, which included erection of a temporary containment structure to control odorous vapors, installation of containment wall around contaminated soil excavation areas, and excavation and off-site disposal of more than 20,000 tons of manufactured gas plant tar, 32,000 tons of petroleum contaminated soils, and approximately 300 tons of historic contaminated fill. A total of 54,507 tons of contaminated soil was removed as part of the remediation activities. Numerous underground storage tanks were encountered and removed from the property. After soil removal, a sub-slab vapor mitigation system was installed under the residential buildings to prevent migration of potential soil vapors. A site cover consisting of concrete building slabs, asphalt and concrete paving, and two feet of clean fill in areas without building or pavement coverage has been installed. A Site Management Plan has been approved which includes Engineering and Institutional controls to prevent exposure to residual contamination left in place following soil removal. Remedial activities were performed between August 2005 and May 2006, as documented in the Final Engineering Report (December 2006). An Environmental Easement was filed on this property on December 21, 2006 and the Certificate of Completion was issued on December 29, 2006. The site is currently occupied by an L-shaped high-rise apartment building located in the western and southwestern portions of the site, a multi-level parking garage located in the eastern portion of the site, with townhouses located south of the garage, along 48th Avenue. Approximately 2,300 square feet of retail space is located on the ground floor of the residential building, along Center Boulevard. A courtyard and driveway area will be located in the center of the site, in front of the main entrance of the high-rise apartment building.

Site Environmental Assessment
Previous investigations identified elevated levels of petroleum-related volatile and semi-volatile organic compounds and heavy metals (mercury and lead) in soil and/or groundwater at some locations on the site. The site has completed environmental remediation, which involved removal of all underground storage tanks, removal of manufactured gas plant tar and petrolem- and metal-contaminated soils. The Site has been covered with concrete slab and soil cover, and soil vapor mitigation systems have been installed for the residential buildings. An off-site investigation was performed in 2006. Off-site areas are being investigated and remediated under other Sites in the VCP and BCP- refer to sites C241087 (Queens West Parcel 8, west of the site) and V00194A (Center Blvd between 47th Road and 48th Avenue, also to the west of the site).

Site Health Assessment

Public water is provided to the area, thereby preventing exposures to groundwater. Contaminated soil has been removed from the site, thereby preventing public exposures. Cover material or site buildings will prevent direct contact with any residual contamination. The on-site building will include a sub-slab depressurization system to prevent vapor intrusion into the building.

Contaminants of Concern
Type of Waste Quantity
ARSENIC UNKNOWN
BENZENE UNKNOWN
BENZO(A)PYRENE UNKNOWN
FLUORANTHENE UNKNOWN
LEAD UNKNOWN
MERCURY UNKNOWN
TOLUENE UNKNOWN

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