PAH air sampling report, PS 234M, Jan 2002

NYC 9/11 Public Portal Document

wre ASSOCIATES INC. 104 East 25th Street New York, New York 10010 www.atc- enviro .com 212.353.8280 Fax 212.353.8306

January 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: Air Samples for Polynuclear Aromatic Hydrocarbons P. S. 234M ATC Project No. 15-19125-0279

Dear Mr. Orlan:

ATC Associates Inc. (ATC) is pleased to provide this report of the results of air samples for polynuclear aromatic hydrocarbons (PAHs) collected on December 6 and 8, 2001, at the referenced location. The New York City Board of Education (BOE) requested these samples to evaluate possible contamination in the school building according to the recommendation of T. Fusillo of Environ Corp., consultant to the parents association..

SCOPE OF WORK

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

The samples were collected using Teflon® filters and XAD-2 tubes connected in series to battery-powered sampling pumps set at a flow rate of 2.0 liters per minute. The samples were analyzed by PSC Analytical Services, Inc. (PSC), an American Industrial Hygiene Association- accredited laboratory in Reading, PA. Analysis was performed according to NIOSH Method 5506.

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 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 foimd on the dates the samples were collected.

CONFIDENTIAL, CITY_21MC100_003444871 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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