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Asbestos air sampling results, Oct 20 2001
Machine-extracted title · confidence 95%Report of asbestos fiber analysis by TEM for air samples taken inside and outside a building on October 20, 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 of Education Approved N.Y. State ELAP #10879 28-11 Queens Plaza North ACCREDITED NVLAP Lab Code # 1187 Long Island City, NY iiioi Report Date: 10/21/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM) With Fiber Identification by Selected-Area Electron Diffraction (SAEDl and Energy-Dispersive X-RAY Spectroscopy (EDS) Method: AHERA Pinal Rule, EPA Federal Register (40 CFR, Parc 763), Vol. 52, No. 210, October 30, 1987
Sample Identification Analysis Parameters
Project/Site; New Stuyvesant H.S., 345 Chambers St., NY, NY TEM Sample No.: 5735 - 61726 yarious Sites Inside and put£ide the^uildin3 Date Received: 10/20/01 Grid Openings Analyzed: 4
Project Sample No.: 12 Average Grid Opening: 106.00 um
Air Volume; 1936 liters Total Area Analyzed: 0.0450 mm2
Filter Type: MCE 25 mm diam., Pore Size: 0.45 um Analytical Sensitivity•.22;2^^£^rnm2 Effective Area; 3S5mri2 0■0044 s/cc
FIBROUS PARTICULATES ANALYZED. Number Observed CONCENTRATION Total Single Matrix Total. Struct. Filter Air Fibers Bundles Clusters Struct.' Struct. >=!5um Struct/mm2 Struct/cc nqm/m3
Chrysotile Asbestos 0 0 0 0 0 • 0 0.0 0.0000 0
Amphibole Asbestos 0 0 0 0 0 0 0.0 0.0000 0
Ambiguous 0 0 0 0 0 0 0.0 0.0000 0
Total asbestos (includes ambiguous structures) 0 C, 0.0 , 0.0000 0
Non-Asbestos 0 0 0 0 0 0 0.0 0.0000 N/A No Identification 0 0 0 0 0 0 0.0 o'. 0000 N/A
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
The 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:
Roman Peysakhov Michael A. Gorycki, Ph.D. Director of Electron Microscopy
CITY_21MC100_003099616
NYC-WTC_000182576
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