1160 Lebanon St, Bronx, NY 10460

West Farms

brownfield, CVOCs, VOCs, "Vapor Intrusion"

MTA New York City Transit
Site Description[1] 
Location: The Site consists of two lots located between Lebanon Street and East 178th Street, bisected by East Tremont Avenue and parallel to Bronx Park Road in the West Farms section of the Bronx. The addresses are 1160 Lebanon Street (a.k.a. 1175 East Tremont Avenue) and 1172 East Tremont Avenue. The Site is designated on the Bronx County tax map as Block 4007 Lot 15 and Block 3909 Lot 8. Site Features: The Site is comprised of two vacant lots. The Site is located in a developed area consisting of a mix of residential and commercial buildings with a few undeveloped parcels of land. Railroad tracks are located to the north across Lebanon Street. Current Zoning/Use: The Site is located within a manufacturing (M1-1) zone; however, it has received approval for development as a mixed-use residential and commercial project in a manufacturing zone. The proposed redevelopment is for residential and commercial use. Historic Use: The Site was formerly occupied by the New York, Westchester and Boston Railway (Railway). The Railway operated from 1912 to 1937; however the tracks were not removed from the Site until 2003. Portions of the Railway’s steel and concrete infrastructure remain in place. Between 1928 and 1996, the Site was also developed with automobile garages, shops, a manufacturing office, and commercial buildings. Most recently the Site was used by MTA New York City Transit for maintenance and storage. Site Geology and Hydrogeology: The Site is underlain by a mixture of sand, silt, clay and gravel with traces of brick, cinder, concrete, coal fragments, and wood; varying in thickness from surface grade to approximately 15 feet below grade. The uppermost groundwater surface has been observed at a 9.5 feet below sidewalk grade. Groundwater flow beneath the site is inferred to be southwesterly; regional groundwater flow direction is believed to be southerly towards the East River. The site elevation ranges from 25 to 30 feet above mean sea level based on Borough of the Bronx Datum.

Summary of Project Completion Dates
Projects associated with this site are listed in the Project Completion Dates table and are grouped by Operable Unit (OU). A site can be divided into a number of operable units depending on the complexity of the site and the number of issues associated with a site. Sites are often divided into operable units based on the media to be addressed (such as groundwater or contaminated soil), geographic area, or other factors.

Site Environmental Assessment
Nature and Extent of Contamination: Soil: In soils, semi-volatile organic compounds (SVOCs), metals, and pesticides have been detected site-wide. SVOCs (specifically carcinogenic polycyclic aromatic hydrocarbons) and a few metals (lead and barium) have been detected at concentrations that exceed NYSDEC Restricted Residential Use Soil Cleanup Objectives (SCOs) in shallow soil (0 feet to 3 feet below grade). These include: benzo(a)anthracene (detected at a concentration of 39.4 parts per million (ppm)); benzo(a)pyrene (33.4 ppm); and benzo(b)fluoranthene (32.3 ppm). The Restricted Residential Use SCO for each of these contaminants is 1 ppm. Lead was detected as high as 6,950 ppm and barium as high as 1,430 ppm compared to the Restricted Residential Use SCOs of 400 ppm. Additional metals, as well as some pesticides, have been detected at concentrations that exceed Unrestricted Use SCOs, but are below Restricted Residential SCOs. There were minor detections of volatile organic compounds (VOCs) at levels below Unrestricted Use SCOs. Groundwater: VOCs, specifically chlorinated solvents, were detected in groundwater at concentrations above the NYS Technical and Operational Guidance Series (TOGS) Ambient Water Quality Standards. Tetrachloroethene was detected at 30.7 parts per billion (ppb); trichloroethene at 6.6 ppb; and cis-1,2-dichloroethene at 5.4 ppb (compared to the TOGS standard of 5 ppb). These contaminants of concern were detected in upgradient groundwater monitoring wells only and are not migrating off-site. Soil vapor: Low concentrations of VOCs have been detected in soil vapor samples across the site. The highest concentrations detected include benzene at 33.2 micrograms per cubic meter (ug/m3); toluene at 47.1 ug/m3; and propylene at 900 ug/m3. Significant threat: It has been determined that this Site does not present a significant threat to the environment or to public health.

Site Health Assessment
The site is not fenced and persons who enter the site could contact contaminants in the soil by walking on the soil, digging or otherwise disturbing the soil. Contaminated groundwater at the site is not used for drinking or other purposes and the site is served by a public water supply that obtains water from a different source not affected by this contamination. Volatile organic compounds in the groundwater may move into the soil vapor (air spaces within the soil), which in turn may move into overlying buildings and affect the indoor air quality. This process, which is similar to the movement of radon gas from the subsurface into the indoor air of buildings, is referred to as soil vapor intrusion. Currently there are no occupied buildings on the site. An evaluation of the potential for soil vapor intrusion to occur will be completed should the current use of the site change.

Contaminants of Concern
Type of Waste Quantity of Waste
BARIUM UNKNOWN
BENZ(A)ANTHRACENE UNKNOWN
BENZO(A)PYRENE UNKNOWN
BENZO(B)FLUORANTHENE UNKNOWN
BENZO[K]FLUORANTHENE UNKNOWN
Chrysene UNKNOWN
DDT UNKNOWN
DIBENZ[A,H]ANTHRACENE UNKNOWN
DICHLOROETHYLENE UNKNOWN
indeno(1,2,3-cd)pyrene UNKNOWN
LEAD UNKNOWN
MANGANESE UNKNOWN
MERCURY UNKNOWN
METHYL-TERT-BUTYL ETHER (MTBE) UNKNOWN
MTBE (METHYL-TERT-BUTYL ETHER) UNKNOWN
TETRACHLOROETHYLENE (PCE) UNKNOWN
TRICHLOROETHENE (TCE) UNKNOWN
  1. DEC Environmental Site Remediation Database.  Site Name: "Lebanon West Farms I and II".

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