2551 3rd Ave. & 245 E. 138th St, Bronx, NY 10451

Mott Haven

brownfield, VOCs, "Vapor Intrusion"

First Bronx/Brooklyn, LLC and Third Avenue/138th Street, LLC
Site Description[1] 
Location: The Site is located on East 138th Street between Rider Avenue and Third Avenue in the Bronx. The Site is comprised of two lots in Tax Block 2333: Lot 1, which has the address 2551 Third Avenue; and Lot 6, which has the address 245 East 138th Street. Site Features: Lot 1 is developed with a one-story vacant building formerly occupied by a KFC restaurant. Prior to the restaurant, the parcel was operated as a gas station. The remaining portion of this parcel is a paved parking lot. The parcel has been vacant since approximately 2006. Lot 6 is developed with a one-story garage building, including an office and two garage bays. This parcel was operated for approximately 80 years as various gas stations and most recently as a gas station and auto repair shop. The remaining portion of this parcel is a paved parking lot. This parcel has been vacant since approximately 2001. Current Zoning/Uses: To the north are large, multi-story former industrial buildings, to the west is a one-story garage building currently used for parking and storage, to the east is a senior citizen residential building and to the south is an abandoned gas station and commercial storefronts with residential apartments above. The property is in a special mixed-use district, zoned M1-4/R7X (manufacturing/ residential). The proposed development consists of a new 8-story residential building with 95 apartments (all affordable or moderate income), and a 16,000 to 17,000 square foot ground floor retail store. The store is currently planned to be a supermarket. The development also includes below-grade parking, a courtyard, and “green design” features, including use of Enterprise Green Community design criteria and a green roof. Historical Use: Most recently, the 2551 3rd Avenue lot was occupied by a KFC restaurant (approximately 1969 to 2006). Prior to that, the site was used as a gas station and machine shop from approximately 1935 to 1969 (originally identified as “City Gas” and later “Cities Service Oil Company”). A spill was reported to NYSDEC in June 2007 (NYSDEC Spill #0703567), when contamination was discovered during the removal of 11 USTs and “all accessible ancillary piping”. Three of the USTs contained waste oil and 8 contained gasoline. Five of the tanks were noted to have small holes. Surrounding impacted soil (a total of 204.63 tons, in an area of 60’ by 30’ and depth of 12’ to 16’ below ground surface) was excavated and backfilled. End-point samples identified SVOCs but no VOCs in soil, and the spill was closed in May 2008. Currently there is a one-story building on the site which has been vacant since the KFC closed in December 2006, and a paved parking lot. The 245 East 138th Street lot has been operated as a machine shop, gasoline station, and auto repair facility by various operators for 80 years, most recently as a Getty gas station and auto repair shop. A spill was reported on June 29, 1998 (NYSDEC Spill #9804000), due to elevated PID readings reported during the removal of five USTs (four 550 gallon USTs and one 4,000 gallon UST), pump islands and associated piping. Approximately 178 tons of soil was excavated and disposed off-site. Subsequent remedial activity at the site (under DEC-approved Remedial Action Plan) included additional excavation (186 tons) in the area of the former USTs and dispenser islands and application of ORC. Quarterly groundwater monitoring was conducted from August 2004 through June 2006, a letter of No Further Action was issued November 3, 2006 and the spill was closed. Currently the parcel is developed with a one-story garage building with an office and two garage bays, and a paved parking lot. The parcel has been vacant since approximately 2001. Site geology and hydrogeology: Depth to groundwater is approximately 6 to 8.5 feet below ground surface. Groundwater is presumed to flow to the southwest. During a December 2010 geotechnical investigation, fill material was identified from below the pavement to approximately 7-12 feet below grade, consisting of sand and gravel, concrete debris, and a hard clay fill layer which reportedly included brick fragment, coal or coke fragments, and slag. The Brownfield Cleanup Agreement was executed in May 2011.

Site Environmental Assessment
Nature and extent of contamination: Contamination associated with the former gasoline stations exists on both lots that constitute this site. Petroleum-related Volatile Organic Compounds (VOCs) and Semi-volatile Organic Compounds (SVOCs), as well as some metals, have been detected site-wide in soil and groundwater. A layer of fill containing “brick fragments, coal or coke fragments, and slag” was also encountered during a geotechnical investigation. Soil: Earlier investigations performed under Spill Numbers 9804000 and 0703567 (both closed) focused on the immediate area of the former tanks and dispenser island. At lot 6 analytical samples from July 2004 identified elevated concentrations of VOCs in soil, including 4.24 parts per million (ppm) benzene and 2.949 ppm total xylenes. At lot 1, post-excavation sampling in the former Underground Storage Tank (UST) area identified elevated levels of SVOCs, including seven carcinogenic Polycyclic Aromatic Hydrocarbons (cPAHs) individually at concentrations of 2.0 ppm (benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenz(a,h)anthracene, and indeno(1,2,3-cd)pyrene). The presence of ash fill on this lot was noted at this site during the tank excavation. During more recent investigations of both lots, VOCs including benzene, toluene, ethylbenzene, xylene, and methyl tert-butyl ether (MTBE) were detected in soil site-wide at predominantly low levels. For these compounds, the Unrestricted Use Soil Cleanup Objectives (UUSCOs) were exceeded in one sample for benzene, ethylbenzene and total xylenes. Benzene was detected at 0.648 ppm compared to the UUSCO of 0.06 ppm; ethylbenzene at 2.04 ppm compared to the UUSCO of 1 ppm; and xylene at 1.92 ppm compared to the UUSCO of 0.26 ppm. SVOCs in soil, including the seven cPAHs noted above as well as naphthalene, were detected in all borings and at concentrations exceeding UUSCOs in 4 of 6 borings. This includes benzo(a)anthracene detected as high as 9.08 ppm compared to the UUSCO of 1 ppm; chrysene as high as 9.06 ppm compared to the UUSCO of 1 ppm; and benzo(a)pyrene as high as 7.26 ppm compared to the UUSCO of 1 ppm. Metals were also detected in exceedance of UUSCOs in all soil borings. This includes lead as high as 2,760 ppm compared to the UUSCO of 63 ppm; mercury as high as 3.45 ppm compared to the UUSCO of 0.18 ppm; and arsenic at 33.4 ppm compared to the UUSCO of 13 ppm. Contaminants in soil have been detected at depths ranging from 3.5 to 8 feet below grade, just above the groundwater table. Groundwater: During earlier investigations performed under the Spills program, VOCs were detected in groundwater including 258 parts per billion (ppb) benzene. Groundwater monitoring in the area of the spill was performed quarterly from August 2004 through June 2006. The final round of groundwater sampling under that monitoring program (June 2006) identified benzene at 682 ppb; toluene at 25.1 ppb; ethylbenzene at 877 ppb; and xylene at 68.1 ppb. More recent (January 2011) groundwater sampling detected benzene, toluene, ethylbenzene, xylene, 1,3,5-trimethylbenzene and 1,2,4-trimethylbenzene at levels exceeding the NYSDEC Technical and Operational Guidance Series Ambient Water Quality Standards (TOGS standards) in one temporary well located near the former tank field on 2551 3rd Ave. Benzene also exceeded TOGS standards in two additional wells on the 245 East 138th St lot. Metals have also been detected at levels exceeding TOGS standards in two different monitoring wells. Contaminant concentrations in recent groundwater samples include: benzene as high as 15 ppb compared to the TOGS standard of 1 ppb; toluene at 46 ppb compared to the TOGS standard of 5 ppb; ethylbenzene at 31 ppb compared to the TOGS standard of 5 ppb; xylene at 267 ppb compared to the TOGS standard of 5 ppb; and lead at 2,420 ppb compared to the TOGS standard of 50 ppb. Significant Threat: An evaluation of the Site’s potential for significant threat will be made following the completion of the Remedial Investigation.

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
1,2,4-TRIMETHYLBENZENE UNKNOWN
ARSENIC UNKNOWN
BARIUM UNKNOWN
BENZ(A)ANTHRACENE UNKNOWN
BENZENE UNKNOWN
BENZO(A)PYRENE UNKNOWN
BENZO(B)FLUORANTHENE UNKNOWN
BENZO[K]FLUORANTHENE UNKNOWN
CADMIUM UNKNOWN
Chrysene UNKNOWN
COBALT UNKNOWN
COPPER UNKNOWN
DIBENZ[A,H]ANTHRACENE UNKNOWN
ETHYLBENZENE UNKNOWN
indeno(1,2,3-cd)pyrene UNKNOWN
LEAD UNKNOWN
MANGANESE UNKNOWN
MERCURY UNKNOWN
TOLUENE UNKNOWN
XYLENE (MIXED) UNKNOWN
  1. DEC Environmental Site Remediation Database.  Site Name: "Former G & C Services".

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