The Former Adams Brush Manufacturing Site is the location of the High School for Construction Trades, Engineering and Architecture
, PS 650. The site is approximatly 1.4 acres and it is located at 94-02 104th Street, Ozone Park, Queens, NY 11416, Block 9381, Lot 44. The site is bordered by 94th Avenue to the north, by 95th Avenue to the south, by 104th Street to the east, and by a residential and commercial building to the west. The neighborhood is mainly residential with some commercial facilities and a few industrial buildings. Prior manufacturing activities at the site appear to have led to the soil and groundwater contamination. In 2003, the on-site Brush Factory's buildings were demolished. The new school's footprint was excavated to a depth of 18 feet below grade. A soil vapor barrier and a sub-slab depressurization system are in place and operating under the school's basement slab. The remedial work has been completed and the High School opened in September 2006. The release letter was issued in October 2007. The site is in the Site Management phase.Site Environmental Assessment
The soil at the site has been contaminated with Semi-Volatile Organic Compounds (SVOCs), Volatile Organic Compounds (VOCs) and other contaminants associated with historic anthropogenic fill materials and manufacturing activities. On site there were two underground storage tanks (USTs) which were closed in place. The groundwater sampling conducted in 1999 revealed VOCs (Tetrachloroethylene and Trichloroethylene) at concentrations up to 1,300 ppb. Sampling event of 2000 and 2002 showed groundwater contaminant concentrations at significantly lower levels (up to 22 ppb). The soil gas sampling performed in January 2006 revealed high concentrations of PCE under the school's basement slab. In 2004, the former Adams Brush's buildings were demolished. The footprint of the school was excavated to 18 feet below grade. The historic fill has been disposed of off-site in accordance with all applicable regulations. The two closed-in-place USTs have been removed and disposed of off site. The soil end point samples under the new building met the recommended cleanup objectives (TAGM 4046). Some remaining historic fill will be managed in place under a composite cover and a Site Management Plan. An active sub-slab depressurization system was installed under the basement's slab and is operating and managed under an approved site management plan. Periodic review report(PR) and annual certifications continue to be submitted and reviewed.
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 to contamination in soil. The school that is being constructed on-site will have a sub-slab depressurization system to prevent infiltration of soil gases that appear to still be present in the area despite removal of contaminated soil.
Contaminants of Concern
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