NYC 9/11 Public Portal Document
Mr. Vincent McGowan
I' BPCpc
January 14,2001
Page 3 of3
The metals sample analysis was performed by Sci Lab's Boston,
Lab's Boston laboratory is certified under the NYSD0H ELAP Massachusetts laboratory. Sci
program (ELAP #10982) for
environmental sample analysis.
Findings
Bulk Soil Samples (ASBESTOS)
(USEPA) considers a material to be asbestos-containing if it contains one
percent or greater
(1%) asbestos by weight.
No asbestos fibers were detected in all four composite bulk soil samples, See
Asbestos Analytical Results. Attachment A for
Bulk Soil Samples (METALS)
Of the eight elemental metals analyzed in the four composite bulk
samples, only lead and
arsenic have a regulatory limit for soil contamination. The limit for lead
is set by the USEPA at
400 parts per million (ppm) in areas where children will likely have contact
soil A play area is considered a lead hazard by the USEPA if the with contaminated
samples meet or exceed 400
ppm. Other soil areas not likely to be contacted by children have a
USEPA regulatory limit of
1,200 ppm.
The average of the four composite bulk soil samples for lead was 23,45 ug/Kg
(or ppm). No
lead hazard was found to b present in these samples.
Arsenic in soil is regulated by the USEPA at a limit of 20 ppm.
The average concentration of Arsenic in the four samples was 2.8 ppm. No arsenic
hazard was
found to be present in the samples.
The other six elemental metals analyzed do not have specific regulatory
limits for soil
contamination by any federal, state or city agency. However guidelines have been set by
federal
and state agencies as recommended soil cleanup objectives. In particular,
the New York State
Department of Environmental Conservation (NYSDEC) has recommended soil cleanup
objectives for heavy metals as outlined in Technical and Administrative
Guideline
Memorandum #4046 (TAGM #4046), dated January 24, 1994. See Table 4 attached
to this
report for a list of heavy metals, background levels of these heavy metals found in the
Eastern
United States and the recommended soil cleanup objective.
Although the West Thames Park was not a state mandated cleanup site, for the purpose
of this
report, Colden has chosen to use these recommended objectives for the West
Thames Park as
Sold 22:60 Z00Z-9z-adW
NYC-WTC 000130931
OCR can misread numbers and units. Confirm readings against the page image before using them.