NYC-WTC_000189297

NYC 9/11 Public Portal Document

Mr Bernard P Orlan May 13 2002 Wipe Samples for Dioxins Page 2 H S for Leadership &. Public Service f894M') ATCProiectNo 15 19125 0290

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

DIOXIN WIPE SAMPLE RESULTS (2, 3, 7, 8 TCDD EQUIVALENTS) April 5, 2002

1st Floor Mam Lobby - Floor /DXl 0 00 5th Floor Hall by Elevator Floor /DX2 0 00032 IQth Floor Hall by Elevator Floor /DX3 000028

’^WeATiIQS^MPjE-^1^ ist Floor Main Lobby - Floor /DXl 0 0012 51^1 Floor Hall by Elevator Floor /DX2 0 0011 lO^h Floor Hall by Elevator Floor /DX3 0 00023

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 nanogiams per square meter (25 ng/m^)

On 4/3/02 the concentrations on indoor surfaces ranged from 0 00 to 0 00032 nanograms per square meter (ng/m^) On 4/12/02 the concentrations on indoor surfaces ranged from 0 00023 to 0 0012 nanograms per square meter (ng/m^) The levels found m all of 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 these locations prior to January 2 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 J rc ASSOC/A TES INC

arie^^'ed B,

Amel Javal James R Cohn CIH CSP Senior Project Manager Regional Manager Industrial Hygiene Division

Attachment

CITY_21MC100_003085256

NYC-WTC_000189298