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NYC-WTC_000227081

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NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan April 17,2002 Wipe Samples for Dioxins Page 2 H. S. of Economics & Finance (M8331 ATC Project No. 15-19125-0291

DIOXIN WIPE SAMPLE RESULTS (2,3, 7,8 TCDD EQUIVALENTS) - Nanograms per square meter (ng/m^) -7 '■ ' J-' ' ’V. LOCATION/SAMPLE NUMBER Main Lobby/DXl 0.00017

5th Floor Hall by Elevator/DX2 10th Floor by Stair B/DX3 0.00024

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 ng/m^.

The concentrations on indoor surfaces ranged from 0.00017 to 0.00029 ng/m^. The levels found in these samples are below the NYSDOH guideline of 25 ng/m^.

It is not possible to determine when the 2, 3, 7, 8 - TCDD equivalents detected in these samples were deposited. Dioxin samples were not collected from this school prior to January 14, 2002.

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

Sincerely, /I TC ASSOCM TES INC

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

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CITY_21MC100_002898108

NYC-WTC_000227082

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NYC-WTC_000227082Source: NYC Law Department, mirrored locally

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