Air sampling for mercury report, PS 234M, Jan 2002

NYC 9/11 Public Portal Document

104 East 25th St

ASSOCIATES TC INC. New York, New York 10010 www.atc-enviro.com 212.353.8280 Fax 212.353.8306

January 28, 2002

Mr. Bernard P. Orlan Director, Environmental Health and Safety New York City Board of Education 28-11 Queens Plaza North Long Island City, NY 11101

Re: Air Sampling for Mercury P. S. 234M ATC Project No. 15-19125-0279

Dear Mr. Orlan:

ATC Associates, Inc. (ATC) is pleased to provide this letter report of air sampling for mercury conducted on January 22, 2002, at the referenced school. The New York City Board of Education (BOE) requested this sampling at the recommendation of Environ Corp., a consultant to the parent’s association.

ATC collected three (3) samples for mercury vapor using Carulite® (Hydrar) tubes connected to battery-powered sampling pumps calibrated to collect 0.2 liters of air per minute. Samples were collected for ten (10) hours. Two (2) samples were collected indoors and one was collected outdoors. The samples were sent to PSC Analytical Services, Inc., an American Industrial Hygiene Association-accredited laboratory in Reading, PA. One blank tube was also submitted. Analysis was performed by means of a mercury analyzer according to NIOSH Method 6009. A copy of the analytical report is attached.

The sampling locations, as specified by the parent’s association consultant, were:

P* floor lobby, P‘ floor hallway, and the roof by the air intake.

Mercury (Hg) was not detected in these samples at levels greater than that detected in the blank.

ATC appreciates the opportunity to provide this indoor air quality service to the BOE. Please call me at (212) 353-8280 extension 212 if you have any questions.

Sincerely, ATC Associates, Inc.

James R. Cohn, CIH, CSP Regional Manager Industrial Hygiene Division

Attachment

CONFIDENTIAL, CITY_21MC100_003423080 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175977