NYC 9/11 Public Portal Document
104 East 25th St. 10th Fl
New York, New York 10010
wwwatc-enviro com
212 353 8280
Fax 212 353 8306
ASSOCIATES INC.
September 19, 2002
Mr. Bernard P. Orlan
Director, Environmental Health-& Safety
New York City Department of Education
28-11 Queens Plaza North
Long Island City, NY 11101 -4008
Re: Wipe Samples for Polychlorinated Biphenyls
P.S. 124 M
ATC Project No. 15-19125-0350
Dear Mr. Orlan:
ATC Associates Inc. (ATC) is pleased to provide this report of the results of wipe
samples for polychlorinated biphenyls (PCBs) collected on September 12, 2002, at the
referenced locations. The New York City Department of Education (DOE) requested this
requested this sampling to evaluate possible contamination inside the school.
Scope of Work
The samples for PCBs were collected using sterile gauze pads and hexane as a solvent.
The solvent was provided and samples were analyzed by PSC Analytical Services, Inc.
(PSC), an American Industrial Hygiene Association-accredited laboratory in Reading,
PA. The PCB analysis was performed using EPA Method 8082B.
Tenzin Namgyal, Industrial Hygienist of ATC’s New York City office, collected the
samples consistent with generally accepted industrial hygiene practices. There were
inherent limitations created by constraints of time, operational and work practice
variability, variations in contaminant concentrations, and sampling and analytical
accuracy. The results of the sampling represent conditions found on the date the samples
were collected.
The areas sampled were: the Lobby-Main Entrance, 2"" floor Hallway by Room 222 and
3"* floor Hallway by Room 307. The surface area was 100 square centimeters (lOOcnr).
CITY_21MC100_003017539
NYC-WTC_000207960
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