OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan August 30, 2002 Air Sampling for Lead Page 2 I.S. 306 X ATC Project No. 15-19125-0246
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 this metal in indoor air in non-industrial situations. The Environmental Protection Agency’s ambient air standard for lead is 1.5 micrograms per cubic meter of air (1.5 ug/m^), this is a three-month i) average. The sampling method used for these samples was an attempt to duplicate the EPA’s method of sample collection as described on the EPA’s September 11* website. The lead in air results reported there are from eight- hour samples.
H Yiannis Efstathiou and Herant Antonyant, Environmental Technicians from ATC’s New York City office, collected the samples.
Results
The levels of airborne lead collected outside the building did not exceed the limits of detection in any of the samples (<1.5 ug inb. Five (5) of the twelve (12) samples collected inside the building 1 exceeded the limit of detection (<1.5 ug/m’). Airborne lead concentrations in these five samples were: first floor lobby =1.9 microgram per cubic meter (ug/nY). auditorium = 1.7 microgram per cubic meter (ug/m'). gymnasium = 2.3 microgram per cubic meter (ug/m’). corridor A 4* floor HVAC #11 = 2.3 microgram per cubic meter (ug/mY. and boy’s locker room = 2.3 microgram per cubic meter (ug/m^).
ATC appreciates the opportunity to provide this indoor air quality service to the BOE. Please call me at (212) 353-8280 extension 212 if you have any questions.
Sincerely, ATC Associates, Inc.
5^el.^ 11^ .1 Senio^Pyjject Manager
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NYC-WTC_000202520
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NYC-WTC_000175757
Laboratory report detailing ambient air lead concentration analysis from a New York City Board of Education school collected in March 2002.
6 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175969
Letter report detailing air sampling results for lead concentrations collected at P.S. 89M by ATC Associates for the New York City Board of Education.
6 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175563
Letter report detailing air sampling for metals conducted on March 1, 2002, at the School for Leadership and Finance.
6 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.955
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.954
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.951
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.
6 shared non-person entities · 1 shared topics · similarity 0.947
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.945
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.945
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.944
machine-extracted · confidence unavailable · Check page ↗6 shared non-person entities · 1 shared topics · similarity 0.944
machine-extracted · confidence unavailable · Check page ↗5 shared non-person entities · 1 shared topics · similarity 0.944
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_000175757
Laboratory report detailing ambient air lead concentration analysis from a New York City Board of Education school collected in March 2002.
Similarity score 0.994 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175969
Letter report detailing air sampling results for lead concentrations collected at P.S. 89M by ATC Associates for the New York City Board of Education.
Similarity score 0.993 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.968 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.967 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000175563
Letter report detailing air sampling for metals conducted on March 1, 2002, at the School for Leadership and Finance.
Similarity score 0.965 (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 0.965 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
NYC-WTC_000175757
Laboratory report detailing ambient air lead concentration analysis from a New York City Board of Education school collected in March 2002.
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