Letter report detailing air sampling for metals conducted on multiple dates between May and June 2002 at the referenced school.
NYC-WTC_000175567–000175569
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
104 East 25th St., 10th Floor New York. New York 10010 www.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES INC.
July 1,2002
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 Metals High School for Leadership & Public Service (M894) ATC Project No. 15-19125-0290
Dear Mr. Orlan:
ATC Associates, Inc. (ATC) is pleased to provide this letter report of air sampling for metals conducted on May 3, 10, 17, 24, 31 and June 7 2002 at the referenced school. The New York City Board of Education (BOE) requested these samples to determine if acceptable air quality is being maintained.
Scope of Work
On each day, ATC collected four (4) samples for metals in air. Samples were collected for ten (10) hours. Three (3) samples were collected inside the building and one (1) was collected outdoors. Two (2) blank filters per day were 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 laboratory report is attached.
The samples were collected using 37 mm mixed cellulose ester filters connected to battery- powered sampling pumps at a flow rate of 2 liters per minute. Pumps were calibrated before and after each sampling period. Analysis was performed by NIOSH Methods 73OOM. Each sample was analyzed for a panel of twelve (12) metals. The metals were aluminum (Al), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), lead (Pb), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni) and zinc (Zn). A copy of the analytical report is attached.
Tenzin Namgyal and Wagdi Abdelshahid, Industrial Hygienists from ATC’s New York City office, conducted the sampling consistent with accepted industrial hygiene practices. The results represent conditions on the day the samples were collected.
The locations of the samples were the 1®' floor Main Lobby, 5* floor Hallway near the elevator, the 10* floor Hallway near the elevator and Roof by air intake,.
The established regulatory values for metals -.are intended for industrial workplace exposures and are not generally applicable to office/school settings. There are no standards for these materials in indoor air in non-industrial situations.
CONFIDENTIAL, CITY_21MC100_003431665 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175567
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NYC-WTC_000175577
Letter report detailing air sampling for metals conducted on March 15, 22, and 29, 2002, at the referenced school.
12 shared non-person entities · 1 shared topics · similarity 0.993
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000180110
Report of air sampling for metals conducted at the referenced school on June 22, 2002.
12 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175558
Letter report detailing air sampling for metals conducted on June 22, 2002, at the School of Economics and Finance.
12 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · 1 shared topics · similarity 0.986
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Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000175577
Letter report detailing air sampling for metals conducted on March 15, 22, and 29, 2002, at the referenced school.
Similarity score 1.000 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000180110
Report of air sampling for metals conducted at the referenced school on June 22, 2002.
Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175558
Letter report detailing air sampling for metals conducted on June 22, 2002, at the School of Economics and Finance.
Similarity score 0.998 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.997 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.997 (not a probability)
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NYC-WTC_000175577
Letter report detailing air sampling for metals conducted on March 15, 22, and 29, 2002, at the referenced school.
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