Wipe sampling lab report for PCBs and PAHs, Jan 2002

NYC 9/11 Public Portal Document

104 East 25th St New York, New York 10010 wwwatc-enviro com 212 353 8280 Fax 212 353 8306 ASSOCIATES INC

January 22, 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 & Polynuclear Aromatic Hydrocarbons High School of Economics and Finance 100 Trinity Place New York, New York ATC Project No. 15-19125-0291

Dear Mr Orlan;

ATC Associates Inc (ATC) is pleased to provide this report of the results of the wipe samples for polychlonnated biphenyls (PCBs) and polynuclear aromatic hydrocarbons (PAHs) collected on January 14, 2002, at the referenced location. The New York City Board of Education (BOE) requested these samples to evaluate possible contamination in the school building

SCOPE OF WORK

Tenzin Namgyal and Wagdi Abdelshahid, Industrial Hygienists of ATC’s New York City office, collected the samples.

The 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 The PAHs were analyzed by EPA Method 8270C

ATC’s findings and conclusions are based on the laboratory sample results and the conditions present in the school at the time of the assessment.

The sampling was performed consistent with generally accepted mdustnal hygiene practices. There were inherent limitations created by constraints of time, operational and work practice vanability, variations m contaminant concentrations, and sampling and analytical accuracy The results of the sampling represent conditions found on the dates the samples were collected

CONFIDENTIAL, CITY_21MC100_003459283 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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