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Asbestos air sampling results, Oct 17 2001
Machine-extracted title · confidence 95%Report of asbestos fiber analysis by TEM for air samples taken inside and outside a building on October 17, 2001.
NYC-WTC_000182562Page image
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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 11101 Report Date: 10/18/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM) ■Wich Fiber Identification by Selected-Area Electron Diffraction (SAED) and Energy-Dispersive X-RAY Spectroscopy (EDS) Method: AHERA Final Rule, EPA Federal Register (40 CFR, Part 763), Vol. 52, No. 210, October 30, 1987
Sample Identification 7knalysis Parameters
Project/Site: New_Stui2iesa2t_JL§c_r_li5_£il3I!*££S_St^_i_£!L_^ TEM Sample No.: 5716 - 61S35 Exterior & Interior of Building &, Roof .Date Received: 10/17/01 Grid Openings Analyzed-.__ 4
Project Sample No.: N5HS-EIR-10/17-3 Average Grid Opening: 106.00 um
Air Volume: 1890 liters Total Area Analyzed: 0.Q4S0 •mm2
F.Liter Type; MCE 25 mm diam. Pore Size: 0.45 um Analytical Sensitivity: 22.2 s/mm2 Effective Area: 385 mm2 0.0045 s/cc
FIBROUS PARTICULATES ANALYZED Nnmber Observ^ CONCENTRATION Total Single Matrix Total. Struct. Filter Air Fibers Bundles Clusters Struct. Struct > = 5um Struct/mm2 Strucc/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 0 0.0 0.0000 0 Non-Asbestos 0 0 □ 0 0 0 0.0 0,0000 K/A No Identification 0 0 0 0 0 0 0.0 0.0000 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:
Marek Peysakhov Michael A. Gorycki, Ph.D. Director of Electron Microscopy
CITY_21MC1OO_OO3O99486
NYC-WTC_000182562
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NYC-WTC_000182562Source: NYC Law Department, mirrored locally
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