Dioxin wipe sample results, PS 131M, Oct 2002

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan October 2, 2002 Wipe Samples for Dioxins Page 2 P. S. 131 /Manhattan) ATC Proiect No. 15-19125-0346

This provides a single value (in nanograms) for the analytical results for each sample. The sample locations and the results are shown in the table;

DIOXIN WIPE SAMPLE RESULTS (2,3, 7, 8 TCDD EQUIVALENTS) August 23, 2002 [DIQXE [@>S Main Lobby/DX-1 0.0616 2nd Floor Hall by Room 210/DX-2 0.00059 3''d Floor Hall by Room 327/DX-3 0.000040 Blank/DX-4 0.00

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 form 0.00040 to 0.0016 nanograms per square meter (ng/m^) for all readings. The dioxin concentrations in all of these sample are below the NYSDOH guideline.

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 these locations prior to this set of samples

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, /I TC ASSOCIA TES INC.

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

Attachment

CONFIDENTIAL, CITY_21MC100_003430952 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175418