Exterior Street, Bronx, NY 10451

Melrose

Brownfield PAHs SVOCs VOCs CVOCs "Vapor Intrusion" SSDS

BTM Development Partners, LLC
Site Description[1] 
The Site is a 16.5-acre parcel that is part of a larger, 85-year old, 34-acre industrial and commercial use area known as the Bronx Terminal Market (BTM) located in Bronx, New York (the “Site”). When completed, Gateway Center at Bronx Terminal Market will include approximately 957,000 gross square feet of retail establishments and 2,600 parking spaces in a multi-level parking garage and at-grade parking. Situated on the banks of the Harlem River, the Site was used for recreation until the mid 18th century. Industrial development of the area began in 1841 with the construction of elevated railroads between Manhattan and the Bronx. According to research performed by Columbia University’s Historic Preservation graduate program, it is estimated that in 1851, as part of the installation of the Harlem River Line, a large portion of the present site was filled, creating the current shoreline. Subsequent to filling, between 1891 and 1897, five slips and piers were constructed along the new shoreline to the west of the Site, and the waterfront block became an industrial area occupied by coal storage yards, and asphalt paving and oil storage companies. In the 1930’s, the area, including the Site, was designated as a market area. The pre-development site structures consisting of the Bronx Terminal Market buildings and the Bronx Men’s House of Detention (BHOD) were constructed between the 1920s and the mid 1970s. Site structures included three market buildings selling various foods and spices, a refrigerated warehouse, and the BHOD. Previously, the Site had been used for industrial and commercial operations including rail yards; toy, photographic mounts and refrigerator manufacturing; a lumber yard; a saw mill; a New York Police Department (NYPD) motorcycle storage and/or maintenance facility; and a New York City Department of Sanitation (NYCDOS) facility. Current property use adjacent to and north, east and south of to the Site, includes gasoline stations, garages, and maintenance facilities with underground gasoline and oil tanks, and a Con Edison auto and machine repair garage. Remediation was completed from September 2006 to February 2009, in accordance with the NYSDEC-approved Remedial Work Plan (dated December 2005). Remedial activities primarily included excavation of contaminated material, removal of Underground Storage Tanks (USTs), backfill with clean fill, installation of vapor mitigation systems and vapor barrier membranes, and construction of a composite cover.

Site Environmental Assessment
The Remedial Investigation performed in 2004/2005 identified specific areas of petroleum-contaminated soil; site-wide historic fill containing elevated concentrations of metals (primarily lead, mercury and arsenic) and SVOCs including cPAHs; limited instances of elevated concentrations of VOCs, SVOCs, and metals in groundwater and limited quantities of elevated methane and VOCs in soil gas. It was determined that the site does not present a significant environmental threat to public health and/or the environment. The Remedial Work Plan was approved by NYSDEC in December 2005 and implemented between September 2006 and February 2009. Track 4 site-specific soil cleanup objectives were used to achieve a cleanup for restricted commercial use. Remedial activities primarily included excavation of contaminated material, removal of Underground Storage Tanks (USTs), backfill with clean fill, installation of vapor mitigation systems and vapor barrier membranes, and construction of a composite cover.

Site Health Assessment
Coming in contact with residual on-site contaminated soil is not likely since the site is covered with building foundations or pavement. Exposure to groundwater contamination is not expected since the area is served by public water. Inhalation via soil vapor intrusion has been minimized through the installation of vapor mitigation technologies (sub-slab depressurization systems, vapor barriers and positive pressurization) in on-site buildings.

Contaminants of Concern
Type of Waste Quantity
ARSENIC UNKNOWN
BENZO(A)PYRENE UNKNOWN
COPPER UNKNOWN
LEAD UNKNOWN
MERCURY UNKNOWN
METHANE UNKNOWN
NAPHTHALENE UNKNOWN
PHENOL UNKNOWN
TETRACHLOROETHYLENE (PCE) UNKNOWN
ZINC UNKNOWN

admin, Debra Hall

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