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Asbestos air sampling results, New York City schools, Oct 2001
Machine-extracted title · confidence 95%Laboratory results for asbestos fiber analysis by TEM at a New York City high school collected on October 25, 2001.
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NYC 9/11 Public Portal Document
ATC Environmental, Inc. 104 East 25th Street New York, New York 10010
N.Y.C. Board cf Education Approved N.Y. State ELAP #10879 28-11 Queens Plaza North ACCREDITED Ni^LAP Lab Code # 118 7 Long Island City, NY 11101 Report Date: 10/25/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM) With Fiber Identification by Selected-Area Electron Diffraction !SAED) and Energy-Dispersive X-RAY Spectroscopy (EDS) Method: AHERA Pinal Rule, 3PA Federal Register (40 CFP., Pari 763), Vol, 52, No. 210, October 30, 1987
Sample Identification Analysis Parameters
Pre ject/Site: New StuweKant H.S., 345 Chambers 5t. , NY, NY TEM Sample No.: 5766 - 62346 Exterior S: Interior of Building &. Roof Date Received: 10/25/01 Grid Openings Analyzed:__4
Project Sample No.: 14 Average Grid Opening: loe.oo um
Air Volume: 1936 liters Total Area Analyzed: 0.0450 mm2
Filter Type: MCE 25 mm dian., Pore Size: 0.45 um Analytical Sensitivity: 22.2 s/mm2 Effective A-reu: 385 mm2 0.0044 s/cc
FIBROUS PARTICULATES ANALYZED Number Observed CONCENTRATION Total Single Matrix Total. struct. Filter Air Fibers Bundles Clusters Struct. Struct >»5.um Struct/mm2 Struct/cc nqm/m3
Chrysotile Asbestos 0 0 0 0 0 0 c.o 0 . 0000 c.
Amphibole Asbestos 0 0 0 0 0 0 0.0 0 . 0000 0
Ambiguous 0 0 0 0 0 0 0.0 C .0000 0
Total asb€;stos (includes ambiguous structures) 0 0 O.G 0.0000 0 Non-Asbescos 0 0 0 0 0 o.c 0.0000 N/A No Identification 0 0 0 0 0 0 0.0 0.0000 N7A
Totals (All Structures) 0 0 0.0 0.0000 N/A The estimated uncertainty of this analysis is 1 standard deviation.
Non-asbestos fiber i.d. (EDS/SAED): None detected Amphibole Asbestos Type: None detected
Ths Analysis was carried out in accordance with the approved TEM method. This laboratory is in compliance with the quality specified for the method.
Analyzed by: Report Reviewed by:
Michael A. Gorycki, Ph.D. Michael A. Gorycki, Ph.D. Director of Electron Microscopy
CONFIDENTIAL, CITY_21MC1OO_OO3473358 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177615
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NYC-WTC_000177615Source: NYC Law Department, mirrored locally
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Air sampling results from the exterior and interior of a high school analyzing asbestos fibers using transmission electron microscopy.
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