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machine-extracted · confidence unavailable · Check page ↗Document / 2 pages
Silica dust air sampling report, February 26, 2002
Machine-extracted title · confidence 95%Letter report detailing air sampling results for silica-containing dust at a school site in February 2002.
NYC-WTC_000175659–000175660Page image
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NYC 9/11 Public Portal Document
Mr. Bernard P. Orlan February' 26, 2002 Silica Dust Assessment Page 2 H. S. for Leadership & Public Service ('M894) ATC Project No. 15-19125-0290
The results of the sampling represent conditions found on the dates of the survey and may not represent conditions found at other times.
RESULTS
Samples were obtained in the Main Lobby, the 5* Floor Hallway near the Elevator and the 10*" Floor Hallway near the Elevator.
Silica was not present above the limit of detection (<10 micrograms per sample) in any of the three samples.
It is our pleasure to provide these indoor air consultative services to the New York City Board of Education. If you have any questions about this report, please call (212) 353- 8280, extension 212.
Sincerely, ATC ASSOCIATES INC.
James R. Cohn, CIH, CSP Regional Manager Industrial Hygiene Division
Attachment
CONFIDENTIAL, CITY_21MC100_003432123 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000175660
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NYC-WTC_000175660Source: NYC Law Department, mirrored locally
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