Report of asbestos fiber analysis by TEM for air samples taken inside and outside a building on October 20, 2001.
NYC-WTC_000182577
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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: 10/21/01
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, ERA Federal Register (40 CFR, Parc 763), Vol. 52, No. 210, October 30, 1987
Sample Identification Analysis Parameters
Project/Site: Net; Stuyvesant U.S.,-34 5 Chambers St., NY, NY TEM Sample No.: 5735 - 61731 Various Sites Inside and Outside the Building Date Received; 10/20/01 Grid Openings Analyzed:__ 4
Project Sample No.: 17 Average Grid Opening: 106.00 um
Air Volume: 1952 liters Total Area Analyzed: 0.0450 mm2
Filter Type: MCE 25 mm diam., Pore Size: 0.4S um Analytical Sensitivity: 22.2 s/mm2 Effective Area: 3 85 mni2 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 c 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 o.c 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 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:
Roman Peysakhov Michael A. Gorycki, Ph.D. Director of Electron Microscopy
CITY_21MC100_003099621
NYC-WTC_000182577
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NYC-WTC_000176441
ATC Environmental report on asbestos fiber analysis by TEM for samples collected inside and outside a school at 345 Chambers Street.
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Report of asbestos fiber analysis by TEM for air samples taken inside and outside a building on October 19, 2001.
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Cover letter and results for transmission electron microscopy analysis of air samples from a high school on October 23, 2001.
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ATC Environmental report on asbestos fiber analysis by TEM for samples collected inside and outside a school at 345 Chambers Street.
Similarity score 0.998 (not a probability)
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Report of asbestos fiber analysis by TEM for air samples taken inside and outside a building on October 19, 2001.
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Cover letter and results for transmission electron microscopy analysis of air samples from a high school on October 23, 2001.
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