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NYC-WTC_000202442
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NYC 9/11 Public Portal Document
104 East 25th St., 10th Fl t New York, New York 10010 'Aww.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES INC.
October 8, 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
Re: Respirable Particulate Sampling P.S.234M ATC Project No. 15-19125-0279
Dear Mr. Orlan:
ATC Associates Inc, (ATC) is pleased to provide this report of respirable particulate sampling conducted on October 2-3, 2002, in the referenced school building. The New York City Department of Education (DOE) requested this sampling to verify that acceptable indoor air quality is being maintained.
SCOPE OF WORK
ATC conducted this evaluation to assess the concentration of respirable particulates (PM2,s) within the building.
ATC collected one 24-hour sample of PMj.s for gravimetric analysis using a Micro Environmental Monitor® (MEM®), manufactured by SKC, Inc. The sample was collected on a pre-weighed PVC filter supplied and analyzed by PSG Analytical Services, Inc., an American Industrial Hygiene Association-accredited laboratory in Reading, PA.
Wagdi Abdelshahid, Industrial Hygienist of ATC’s New York City office, conducted the sampling consistent with accepted indoor air quality assessment practices. The results of the sampling represent conditions found on the date the sample was collected.
EVALUATION CRITERIA
Currently, there are no regulatory standards for indoor air quality in non-industrial buildings, such as offices and schools.
CITY_21MCi00_003272709
NYC-WTC_000202442
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NYC-WTC_000202442Source: NYC Law Department, mirrored locally
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Letter and report detailing respirable particulate sampling conducted to assess indoor air quality.
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