13 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗Document / 2 pages
NYC-WTC_000187693
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NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan February 19, 2002 Air Sampling for Metals Page 2 P. S. 150 ('Manhattan') ATC Project No. 15-19125-0289
SAMPLE RESULTS
The only metals present at concentrations greater than the limits of detection were Cr and Pb. Analysis for Pb was performed only on the January 29* samples. Chromium concentrations in the samples on both days were indistinguishable from the concentrations in the blanks.
Lead was detected in the three samples from January 29*. All three samples contained slightly less than 0.3 micrograms of Pb per cubic meter of air (0.3 ug/m’) which is just at the detection limit. The concentrations detected are below the EPA standard of 1.5 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.
James R. Cohn, CIH, CSP Regional Manager Industrial Hygiene Division
Attachment
CITY_21MC100_0 02954361
NYC-WTC_000187694
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NYC-WTC_000187694Source: NYC Law Department, mirrored locally
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