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Dioxin wipe sample results, PS 150M, May 2002
Machine-extracted title · confidence 95%ATC Associates report on polychlorinated dibenzo-p-dioxins and dibenzofurans collected at PS 150M in March 2002.
NYC-WTC_000178031–000178032Page image
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NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan May 6, 2002 Wipe Samples for Dioxin Page 2 P. S. 150 (Manhattanl ATC Project No. 15-19125-0289
The sample was analyzed for sixteen (16) PCDD/PCDF isomers. The results for each isomer were then converted to 2, 3, 7, 8 -tetrachloro-dibenzo-p-dioxin (2, 3, 7, 8-TCDD) equivalents by multiplying by an established equivalency factor. This provides a single value (in nanograms) for the analytical results for each sample. A copy of the laboratory analysis report is attached. The results of the samples on each day are shown in the following table:
DIOXIN WIPE SAMPLE RESULT (2,3, 7, 8 TCDD EQUIVALENTS) - Nanograms per square meter (ng/m^) March 15,2002
pt Floor Main Entrance- Lobby/DXl 0.00U068
Blank 0.00
March 18,2002
pt Floor Main Entrance- Lobby/DXl 0.00023
Blank 0.00
March 25,2002 >2^ pt Floor Main Entrance- Lobby/DXl (Food Blank (FUd
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 dioxin concentration in this sample is below the NYSDOH guideline.
It is not possible to determine when the 2, 3, 7, 8 - TCDD equivalents detected in this sample was deposited. Dioxin samples were not collected from this location prior to December 13, 2001.
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, ATC Associates, Inc.
James R. Cohn, CIH, CSP Regional Manager Industrial Hygiene Division
Attachment
CONFIDENTIAL, CITY_21MC100_005760131 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000178032
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NYC-WTC_000178032Source: NYC Law Department, mirrored locally
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