Laboratory report from ATC Associates detailing air sample results for mercury vapor collected at the School of Economics and Finance.
NYC-WTC_000179434–000179435
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
104 East 25th Street New York. New York 10010 wwwatc-enviro com 212 353 8280 Fax 212 363 8306 ASSOCIATES INC
January 21, 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 Samples for Mercury Vapor High School for Economics and Finance (M833) 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 letter report of air sampling for mercury vapor collected on January 14,2002, at the referenced school The New York City Board of Education (BOE) requested these samples to evaluate possible contammation in the school building.
ATC collected nine (9) samples for mercury vapor. Samples were collected for a minimum of ten (10) hours Seven (7) samples were collected inside the building and two (2) were collected outdoors One blank sample was also submitted. The samples were sent to PSC Analytical Services, Inc , an American Industrial Hygiene Association-accredited laboratory in Reading, PA A copy of the analytical report is provided in the attachment.
Samples for mercury vapor were collected using Carulite® (Hydrar) tubes connected to batteiy- powered sampling pumps calibrated to collect 0.2 liters of air per minute Analysis was performed by means of a mercury analyzer according to NIOSH Method 6009
The locations of the samples were. Roof by air intake; Outdoors by the Mam Entrance, Mam lobby; 3"^ floor by Stair B; 5**' floor Stair A; 7* floor hallway by the bridge; Kitchen 8* floor. Room 906, Room 1006.
The established regulatory value for mercury is intended for industrial workplace exposures and IS not generally applicable to office/school settings. There are no standards for mercury in indoor air in non-mdustnal situations.
SAMPLE RESULTS
The outdoor sample fi-om the Main Entrance (#Hgl) contained 0.0450 micrograms (ug) of Hg which equals an airborne concentration of 0.000375 milligrams per cubic meter (mg/m’) The blank contained 0.037 ug of Hg. The blank-corrected Hg concentration in Sample #Hgl is 0.00007 mg/m\
CONFIDENTIAL, CITY_21MC1OO_OO3459242
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000179434
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NYC-WTC_000175674
Laboratory report from ATC Associates detailing air sampling results for mercury vapor conducted at a NYC school in March 2002.
5 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175582
Letter report detailing mercury vapor sampling conducted on February 22, 2002, at the referenced school.
5 shared non-person entities · 1 shared topics · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.977
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175370
Laboratory report detailing mercury vapor air sampling results conducted at P.S. 131M on August 22, 2002.
5 shared non-person entities · 1 shared topics · similarity 0.976
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175454
Laboratory report from ATC Associates detailing mercury vapor air sampling results at PS 131M conducted on August 22, 2002.
4 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.974
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NYC-WTC_000175582
Letter report detailing mercury vapor sampling conducted on February 22, 2002, at the referenced school.
Similarity score 0.991 (not a probability)
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