NYC-WTC_000180110
Report of air sampling for metals conducted at the referenced school on June 22, 2002.
14 shared non-person entities · 1 shared topics · similarity 0.990
machine-extracted · confidence unavailable · Check page ↗Document / 2 pages
NYC-WTC_000227070
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NYC 9/11 Public Portal Document
wrc ASSOCIATES INC. 104 East 25th St.. 10th FIc New York, New York IOC www.atc-enviro.ci 212.353.82 Fax 212.353.83
June 19, 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 of Economics and Finance (833M) ATC Project No. 15-19125-0291
Dear Mr. Orlan:
ATC Associates, Inc. (ATC) is pleased to provide this report of air sampling for metals conducted on March 30, 2002, at the referenced school. The New York City Board of Education (BOE) requested this sampling to ensure that acceptable air quality is being maintained.
Scope of Work
ATC collected four (4) samples for metals from locations throughout the building and outdoors. Samples were collected for ten (10) hours 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. Three (3) samples were collected inside the building and one (1) was collected outdoors on the roof. One blank sample was also submitted per day. The samples were sent to PSC Analytical Services, Inc., an American Industrial Hygiene Association- accredited laboratory in Reading, PA. Analysis was performed by NIOSH Methods 7300M. The samples were analyzed for a panel of twelve (12) metals. The metals were aluminum (AI), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), iron (Fe), lead (Pb), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni) and zinc (Zn). Copies of the analytical laboratory reports are attached.
The sampling locations were; the Main Lobby, the S'*" floor Hallway, the lO"’ floor Hallway and the Roof.
Tenzin Namgyal and Wagdi Abdelshahid, Industrial Hygienists from ATC’s New York City office , collected the samples consistent with accepted industrial hygiene practices. The results represent conditions on the days the samples were collected.
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 metals in indoor air in non-industrial situations.
CITY_21MC1OO_OO2923987 NYC-WTC_000227070
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NYC-WTC_000227070Source: NYC Law Department, mirrored locally
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Letter report detailing air sampling for metals conducted on June 22, 2002, at the School of Economics and Finance.
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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 0.984
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Letter report detailing air sampling for metals conducted on multiple dates between May and June 2002 at the referenced school.
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NYC-WTC_000180110
Report of air sampling for metals conducted at the referenced school on June 22, 2002.
Similarity score 0.993 (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 0.993 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175577
Letter report detailing air sampling for metals conducted on March 15, 22, and 29, 2002, at the referenced school.
Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175567
Letter report detailing air sampling for metals conducted on multiple dates between May and June 2002 at the referenced school.
Similarity score 0.992 (not a probability)
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