NYC-WTC_000199385

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan October 2, 2002 Wipe Samples for Dioxins Page 2 Meyer London School (P. S. 2M) ATC Proiect No. 15-19125-0341

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

DIOXIN WIPE SAMPLE RESULTS (2, 3, 7, 8 TCDD EQUIVALENTS) August 23, 2002

LOCATIONZSAMPLE NUMBER (ng/m^) Main Lobby/DX-1 0.066^1) 2nd Floor Hallway by Exit 2&3/DX-2 oor ___ 3rd Floor Hallway by Exit 6/DX-3

The New York State Department of Health (NYSDOH) established guidelines for dioxin for the re-occupancy of the Binghamton State Office Building following a PC 3 fire. The NYSDOH guideline for dioxin on surfaces is 25 nanograms per square meter (25 ng/m^).

The concentrations on indoor surfaces ranged from 0.000051 to 0.0027 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, A TC ASSOCIA TES INC.

/

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

Attachment

CITY_21MC100_003033705

NYC-WTC_000199386