536 West 41st St, NY, NY 10036

Hell's Kitchen

brownfield, VOCs, "Vapor Intrusion"

Mercedes-Benz Manhattan, Inc.
Site Description[1] 
The investigation of this site is being proposed under the Brownfield Cleanup Program (BCP). Site Location: The site is located at 536 West 41st Street in New York City, New York County and consists of one tax parcel (however historically this was a number of lots which recently consolidated into one lot) which is 2.296 acres in size and is in the Hell's Kitchen neighborhood. Site Features: The site has a one to two story brick and concrete building with a partial basement and an asphalt-paved parking lot. Unused Amtrak tunnels and the No.7 train extension tunnels are located approximately 25 to 30 feet beneath the ground surface. It is bordered by a utility building to the north, a church and abandoned gas station to the east, bus parking to the south, and a NYC Transit Authority bus depot to the west. Current Zoning/Uses: The site is currently vacant and is zoned C6-4 which is a mixed commercial/residential zone. Mixed use residential/commercial sites are locared to the west of the site. Commercial uses are located to the north while to the east are two churches and an abandoned commercial site. North east of the site are condominiums and a police station. Historical uses: The site has included a bottling company and warehouse, an auto repair station, and a filling station in the past. Site Geography and geology: The surface topography slopes down to the east and is approximately 20 feet above mean sea level. Due to the topography, it is expected that groundwater would flow from the southwest towards the Hudson River. However,the groundwater flow can be affected by factors such as bedrock, fill and other factors. Depth to bedrock ranges from 4 feet on the west side of the site to 19 feet on the east side. Bedrock consists of schist with granite intrusions.

Site Environmental Assessment
Nature and Extent of Contamination - There have been three reported spills on the Site since 1996, including diesel and hydraulic oil. The 1996 spill investigation indicated soil concentrations of 1,2,4 triethylbenzene at up to 25 ppm, ethylbenzene at up to 2.7 ppm, naphthalene at up to 36 ppm, benzo(a)anthracene at up to 4.7 ppm, benzo(b)flouranthene at up to 5.6 ppm, benzo(k)flouranthene at up to 2.3 ppm, chrysene at up to 5.1 ppm, benzo(a)pyrene at up to 4.5 ppm, ideno (1,2,3-cd) pyrene at up to 1.9 ppm, and dibenz(a,h)anthracene at up to 0.52 ppm. All these results exceeded unrestricted soil cleanup objectives (SCOs). Benzo(a)pyrene exceeded industrial SCOs. Benzo(a)anthracene, benzo(b)flouranthene, chrysene, ideno(1,2,3-cd)pyrene, and dibenz(a,h)anthracene concentrations also exceeded restricted residential SCOs, while benzo(k)flouranthene exceeded residential SCOs. The only remedial measures taken during the spill were installation of a vapor barrier and removal of small amounts of contaminated soils where piles were drilled for the foundation of a building expansion. Some of the PAH contamination at the site is likely related to historic fill. The BCP application states that soil sampling results from a more recent 2007 Phase II Investigation indicate seven SVOCs exceed the NYSDEC Soil Cleanup Objectives (“SCOs”). Metals were detected in all seven samples taken at the Site, also exceeding their respective SCOs. Lead levels found on the Site may fail TCLP according to the Phase II investigation. Groundwater results also resulted in exceedances. Arsenic, barium, beryllium, chromium, copper, iron, lead, magnesium, manganese, mercury, nickel, sodium, and zinc were detected in groundwater at concentrations exceeding their respective class GA Ambient Water Quality Standards.

Site Health Assessment
Information submitted with the BCP application regarding the conditions at the site are currently under review and will be revised as additional information becomes available.

Contaminants of Concern
Type of Waste Quantity of Waste
BENZO(A)PYRENE UNKNOWN
Petroleum Products UNKNOWN
  1. DEC Environmental Site Remediation Database.  Site Name: "Former West 41st Street Car Dealership Site".

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