NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan December 20,2001
Wipe Sampling for PCBs Page 2
Stuyvesant High School (Manhattan) ATC Project No. 15-19125-0246
WIPE SAMPLING RESULTS
ATC submitted three samples for PCBs (plus one blank) to PSC for analysis. A copy of the
laboratory report is provided in Attachment 1. Samples were taken from areas specified by the
parents association consultant. The sample area for each wipe sample was 100 square
centimeters (lOOcm^). The areas sampled were:
• 1st floor main entrance hallway - wall;
• floor bridge entrance hallway - wall;
• AC#2 mixed air plenum - floor.
Each sample was analyzed for seven PCB compounds with differing percentages of chlorine.
The PCB results of all samples were below the reporting limits (2.0 micrograms/sample). The
same level was found in the blank.
Currently, the Environmental Protection Agency spill clean-up standard for PCBs on non-porous
surfaces is 10 micrograms per 100 square centimeters or less (<10ug/100cm2) as stated in 40
CFR761.
It is our pleasure to provide these indoor environmental services to the New York City Board of
I
Education. If you have any questions about this report, please call (212) 353-8280, extension
212 or 261.
Sincerely,
ATC ASSOCIATES INC.
James R. Cohn, CIH, CSP
Regional Manager
Industrial Hygiene Division
Attachment
CONFIDENTIAL, CITY_21MC1OO_OO3433O54
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175775
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