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NYC-WTC_000202577

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NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan December 23, 2002 Wipe Samples for Dioxins Page 2 P. S. 89 (Manhattan) ATC Project No. 15-19125-0297

The sample locations and the results are shown in the table:

DIOXIN WIPE SAMPLE RESULTS (2, 3,7,8 TCDD EQUIVALENTS) November 14,2002 DIOXIN CONCENTRATION LOCATION/SAMPLE NUMBER (ng/m2) ist Floor Hallway - North / DXl ■ 0.000072 1 st Floor Hallway - South / DX2 ^^NZ 2nd Floor Hallway South / DX3 (Took) * <A.= Not Available - Due to a laboratory error, Sample DX2 could not be analyzed. jj

The New York State Department of Health (NYSDOH) established guidelines for dioxin for the re-occupancy of the Binghamton State Office Building following a PCB fire. The NYSDOH guideline for dioxin on surfaces is 25 nanograms per square meter (25 ng/m^).

The concentrations on indoor surfaces ranged from 0.000072 to 0.0010 nanograms per square It meter (ng/m^) for the two samples analyzed. The dioxin concentrations in these samples are below the NYSDOH guideline. (I It is not possible to determine when the 2, 3, 7, 8 - TCDD equivalents detected in these samples Ij were deposited. Dioxin samples were not collected from these locations prior to December 20, 2001.

[ It is our pleasure to provide these indoor environmental services to the DOE. If you have any questions about this report, please call (212) 353-8280, extension 212.

Sincerely, A TC ASSOCIA TES INC.

James R. Cohn, CIH,CSP Regional Manager Industrial Hygiene Division

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NYC-WTC_000202578

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NYC-WTC_000202578Source: NYC Law Department, mirrored locally

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