40.804966623, -73.939694143

Harlem

Brownfield SVOCs PCBs VOCs "vapor intrusion"

New York College of Podiatric Medicine
Site Description[1]
The Site is located in an urban area of New York County (Manhattan) on the west side of Park Avenue bounded by 124th and 125th Streets. The site is primarily a paved parking lot. Surrounding uses include residential buildings with first floor retail and commercial buildings with office space to the north across 125th Street; the Metro-North Railroad tracks to the east across Park Avenue followed by residential buildings; an asphalt-paved parking lot to the south across 124th Street; and a residential building with first floor retail in addition to the New York College of Podiatric Medicine to the west. The Site had been residential and had been the location of the former Harlem Central Hotel (later the Hotel Naomi) and then the Linda Hotel, (1950's through the 1970's). It has been a parking lot since approximately 1980. It is unknown at this time if these uses contributed to the contamination identified on-site. The intended use of the site after remedial actions have been completed consists of a mixed use building with parking on the lower, sub-grade floors and retail/commercial and residential above. The RAWP was approved with modifications on March 1, 2006. However, the volunteer/developer did not pursue the remedy immediately. On January 10, 2007 a meeting was held with the new partner in the development, during which they committed to implementing the approved remedy and subsequent development. A Stipulation List was submitted in October 2007 and this was approved by the Department in April 2008. Remedial Construction began on February 28, 2008 with the implementation of the Native Soil Sampling Plan. The subsequent Report was submitted on July 23, 2008. The department has requested cross sectional drawings to facilitate the review of this document.

Site Environmental Assessment

There have been at least four separate environmental investigations at the site which included the collection of subsurface soil and/or groundwater samples. Together, these investigations have found that: • Fill is present on the site to a depth of approximately 20 feet below grade; • A layer of petroleum contamination was identified at the water table across much of the site, varying in thickness up to approximately three feet; • Fingerprint analysis of the petroleum layer identified it as #6 fuel oil; • No VOCs were found in soil samples at levels above TAGM 4046 RSCOs; • SVOCs were found at concentrations below TAGM 4046 RSCOs excepting cPAHs which were routinely found above TAGM 4046 levels; there were a couple of SVOC outliers: 22 ppm dinitrotoluene in a duplicate sample (undetected in the actual sample); and 800 ppm b2ehp in one sample; • metals were also found above TAGM levels, but less frequently; (e.g. mercury to 0.47 mg/kg - about one-quarter of the samples were above TAGM; barium at 656 mg/kg in one sample (all others under TAGM); lead at 1050 mg/kg in one sample (all others substantially lower); magnesium mostly over TAGM; • PCBs (1260) at 1.6 mg/kg in one shallow, composite soil sample (two other 1260 detections below 20 ug/kg in two other samples; all other samples were ND). • No exceedance of groundwater standards by organics was noted. Filtered groundwater samples showed exceedances of standards for aluminum, iron and manganese. • Soil samples taken from below the fuel oil and fill layers have shown no impacts. NYSDEC, in consultation with NYSDOH, has determined that the site conditions do not pose a significant threat to human health or the environment. A Part 375 Track 1 Cleanup is proposed for the site. The Native Soil Sampling Plan was approved and started in February 2008. The report wa submitted in July 2008. The department has requested the submittal of cross sectional drawings to evaluate the findings.

Site Health Assessment
Human exposures to groundwater contamination are unlikely since the area is served by public water. Since the site is currently covered by pavement and buildings and contaminated soils are at depth, direct contact exposures are unlikely. The proposed remedy calls for most of the contaminated soil to be excavated and properly disposed of off-site. The potential for exposures associated with soil vapor intrusion will be investigated.

Contaminants of Concern
Type of Waste Quantity
BENZ(A)ANTHRACENE UNKNOWN
BENZO(A)PYRENE UNKNOWN
BENZO(B)FLUORANTHENE UNKNOWN
LEAD UNKNOWN
POLYCHLORINATED BIPHENYLS (PCB) UNKNOWN

admin, Debra Hall, JimmyWalker

Power_plant

Contribute

Add1 Add a Marker
Create Create Your Own Map
Share Share This Map
Save Save This Map
Add2 Add to Your Site

Map Key ( 0 )

Marker Key ( 0 )

List of All Markers