Wipe sample results for PCBs, P.S. 124, Sept 2002

NYC 9/11 Public Portal Document

104 East 25th St, 10th Fi 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 m 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 mdustnal hygiene practices. There were inherent limitations created by constraints of time, operational and work practice vanabihty, 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 (100cm')

CONFIDENTIAL, CITY_21MC100_003431364 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175521