OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
104 East 25th St., 10th Fl New York, New York 10010 www.atcmnviro.com 212.353.8280 Fax 212.353,8306 ASSOCIATES INC.
5
September 18, 2002
Mr. Bernard P. Orlan Director, Environmental Health and Safety New York City Department of Education 28-11 Queens Plaza North Long Island City, NY 11101
Re: Air Sampling for Mercury Vapor Stuyvesant High School ATC Project No. 15-19125-0246
Dear Mr. Orlan:
ATC Associates, Inc. (ATC) is pleased to provide this report of air sampling for mercury vapor conducted on September 6, 2002, at the referenced school. 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 collected three (3) samples plus one (1) blank for mercury vapor using Carulite® (Hydrar) tubes connected to battery-powered sampling pumps calibrated to collect 0.2 liters of air per minute. Two samples were collected indoors and one was collected on the roof. 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 per day. Analysis was performed by means of a mercury analyzer according to NIOSH Method 6009. A copy of the analytical report is attached.
Tenzin Namgyal, Industrial Hygienist and Sonny Ramlal, Environmental Technician from ATC’s New York City office, conducted the sampling consistent with accepted industrial hygiene practices. The results represent the conditions on the day the samples were collected.
Results
Mercury (Hg) was detected in the samples at levels that were indistinguishable from those detected in the blank.
Mercury IS a known trace contaminant of the Carulite® sampling medium, the results suggest that this is the source of the mercury detected.
CITY_21MC100_003273077
NYC-WTC_000202500
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NYC-WTC_000185612
Formal report detailing mercury vapor air sampling conducted at a New York City school in June 2002 upon request of the Board of Education.
8 shared non-person entities · 1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175674
Laboratory report from ATC Associates detailing air sampling results for mercury vapor conducted at a NYC school in March 2002.
6 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.981
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · 1 shared topics · similarity 0.981
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗7 shared non-person entities · 1 shared topics · similarity 0.977
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 0.976
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.975
machine-extracted · confidence unavailable · Check page ↗7 shared non-person entities · 1 shared topics · similarity 0.973
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.
7 shared non-person entities · 1 shared topics · similarity 0.972
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000179434
Laboratory report from ATC Associates detailing air sample results for mercury vapor collected at the School of Economics and Finance.
5 shared non-person entities · 1 shared topics · similarity 0.972
machine-extracted · confidence unavailable · Check page ↗No available related records indexed in this group.
Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000185612
Formal report detailing mercury vapor air sampling conducted at a New York City school in June 2002 upon request of the Board of Education.
Similarity score 0.995 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175674
Laboratory report from ATC Associates detailing air sampling results for mercury vapor conducted at a NYC school in March 2002.
Similarity score 0.993 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.990 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.988 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.988 (not a probability)
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NYC-WTC_000185612
Formal report detailing mercury vapor air sampling conducted at a New York City school in June 2002 upon request of the Board of Education.
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Laboratory report from ATC Associates detailing air sampling results for mercury vapor conducted at a NYC school in March 2002.
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