Bulk soil and surface wipe sampling report, Jan 2002

NYC 9/11 Public Portal Document

Mr. Vincent McGowan BPCPC January 14,2001 Page 3 of3

The metals sample analysis was performed by Sci Lab's Boston, Massachusetts laboratory. Sci Lab's Boston laboratory is certified under the NYSDOH ELAP 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 Attachment A for Asbestos Analytical Results.

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 with contaminated soil. A play area is considered a lead hazard by the USEPA if the 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 be 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

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