NYC 9/11 Public Portal Document
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10/01/2001 10:43 FAX '212 353 8306 ATC 1 017/020
ATC Environmental, Inc.
104 East 25th Street
New York, New York 10010
N.Y.C. Housing Authority Approved N.Y. State ELAP #10879
250 Broadway, 16th Floor ACCREDITED NVLAP Lab Code # 1187
New York,'NY 10007 Report Date: 09/16/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY TEM)
with Fibor ldontifieation by Selected-Arta Elactroa Diffraction (SAAB?• ) and Enorgy-Dispersive 8-RAY Spectroscopy (EDS)
Methods ATEPA Final Rule, EPA Federal Register (40 CPR, Part 763), Vol. 52, No. 210, Oetorer 30, 1957
,Ramole identification Analysis ParamC.rarg
Project/Biter 250 Broadway. NY. NV TEM Sample No., 5532 - 59096
pioers 31, 27. 19. 8
Data Received: 09/16/01 Grid Openings Analyzed: 4
Project Sample Na.,12 Average Grid Openings 106.00 um
Air volume: 1900 liters Total Arco Alalyaeds 0.0450 mm2
rilter Type: MCE 25_nmr dianr.. Pore size, 0.45 um Analytical sensitivity: 22.2 n/mm2
Effectiva Arco$ 398 mm2 0.0048 s+1_ce
FIBROUS PARTICULATES ANALYZED
Number 0boarved CONCENTRATION
Total
Single Mntr:x Total. Struct. Filter Air
Fibers Fsusidlec Clusters Struct. Struct. s>5um $truct/mxsn2 Struct/co nom/m3
Chrysotile Asbestos a o 0 0 0 0 0.0 0.0000 0
Amphibole A:nestoc 0 0 0 0 a 0 0.0 0.0000 0
Ambiguous 0 0 0 0 0 0 0.0 0.0300 0
Total asbestos (includoa ambiguous structures) 0 0 0.0 0.0000 0
Non-Asbeetos 0 a 0 0 0 C 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 a timsted uncertainty of this analysis is 1 standard deviation.
Non-asbestos fiber i d. -
(EDS/SAED) -: None detected-------------------------r ------------------
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
NYC-WTC 000105988
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