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NYC-WTC_000226949
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NYC 9/11 Public Portal Document
104 East 25th St New York, New York 10010 www.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES INC.
March 4, 2002
Mr. Bernard P. Orlan Director, Environmental Health & Safety New York City Board of Education 28-11 Queens Plaza North Long Island City, NY 11101-4008
Re: Wipe Samples for Polychlorinated Biphenyls Stuyvesant High School ATC Project No. 15-19125-0246
Dear Mr. Orlan:
ATC Associates Inc. (ATC) is pleased to provide this report of the results of the wipe-samples for polychlorinated biphenyls (PCBs) collected on FebruaryJX 2002, at the referenced location. The New York City Board of Education (BOE) requested these samples to evaluate possible contamination from PCBs in the school building according to the recommendation of H. A. Bader, consultant to the parent’s association.
SCOPE OF WORK
Mr. Tenzin Namgyal, Industrial Hygienist of ATC’s New York City office, collected the samples.
The PCBs samples 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.
ATC’s findings and conclusions are based on the laboratory samples results and the conditions present in the school at the time of the assessment.
The sampling was performed 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 dates the samples were collected.
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 parent’s association consultant. The surface area for each wipe sample was 100 square centimeters (lOOcm^).
CITY_2IMCl00_000490918 NYC-WTC_000226949
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NYC-WTC_000226949Source: NYC Law Department, mirrored locally
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