This site is currently being proposed under the Brownfield Cleanup Program (BCP). The site is +/- .27 acres and is located in the Borough of the Bronx, New York City. The site is a triangular shaped parcel of land situated at the southern tip of a city block, where Boston Road and Southern Boulevard fork to the east and west, respectively. The 174th Street MTA Station is located above this intersection (elevated tracks). To the north is a self storage center with East 175th Street and a vacant lot beyond. The surrounding area is a mixture of commercial, recreational and residential uses. The site was occupied by a service station and an auto repair shop & car wash. The southern portion of the site includes remnants of an Amoco gasoline station, which has been vacant since 2003. The southern portion of this site was also used as an auto repair shop & car wash, which has been vacant since 1993. All the structures have been demolished and fenced by New York City. The operations of these facilities likely contributed to the contamination of soil and groundwater. The proposed project consists of construction of a ten-story low-income/mixed use development with total buildable floor area of approximately 111,508 gross square feet with consisting of 78,350 square feet of residential apartments and approximately 8,090 square feet for commercial retail ground floor space. The project will have 98 units of low and moderate income housing, 20 below grade parking spaces, residential storage, and a community room. Contaminant which is known or suspected to affect the soil, groundwater and soil gas is petroleum.
Site Environmental Assessment
The Phase I Environmental Site Assessment Report (Phase I) indicated that a filling station, and either an auto repair facility or car wash were located on the site from 1927 to 1940. The car wash ceased operation in 1993. In 2003, the gasoline station underground storage tanks were removed and the entire property became vacant. Historical site uses suggest that contamination of the soil, groundwater, and soil vapor would be result of the operation of the service station and the auto repair shop. A Remedial Investigation (RI) was completed in July 2008. The investigation found contamination in soil, groundwater, and soil vapor. Soil: Eight (8) soil samples were analyzed. VOCs in soil exceeded Part 375 Unrestricted Soil Cleanup Objectives. Ethylbenzene was detected at 77 mg/kg (1 mg/kg in Part 375-6.8) in SB-106 while 1,2,4 Trimethylbenzene were detected at 310 mg/kg (3.6 mg/kg in Part 375-6.8) in SB-106. One SVOC - Naphthalene was detected at 25 mg/kg in SB-106. Metals including Mercury was detected at 0.7 mg/kg (0.18 mg/kg in Part 375-6.8) in SB-101 while lead was detected at 580 mg/kg (63 mg/kg in Part 375-6.8) in SB-101. Groundwater: Six (6) groundwater samples were analyzed. Analytical data from the RI revealed VOCs in groundwater exceeded TOGS 1.1.1 (TOGS). Benzene was detected at 960 ug/L in SB-104W while total xylenes were detected at 32,200 ug/L in SB-107W. SVOC in groundwater was Naphthalene detected at 650 ug/L in SB-107W. Metals identified in groundwater samples (unfiltered) at concentration above TOGS are Manganese detected at 8,700 ug/L in SB-102W and lead detected at 340 ug/L in SB-103W. Soil Gas: Two (2) soil vapor samples and 1 air sample were analyzed. Analytical data revealed the presence of VOCs in both types of samples. Trichlorofluoromethane was detected at 140 ug/m3 at SV-202 while total xylenes were detected at 43 ug/m3 in SV-202. Numerous VOC compounds were detected as well.
Site Health Assessment
A health assessment summary will be provided when sufficient information becomes available to complete the assessment.