NYC 9/11 Public Portal Document
10/01/2001 10:43 FAX 212 353 8306 ATC 11018/020
ATC Environmental, Inc.
104 East 25th Street
New York, New York 10010
N.Y.C. Housing Authority Approved N.Y. State ELAP 410879
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 ITEM)
with Tibor Identification by 8cicetcd-Arta Electron D4ffrection ($AM) and Eaesgy-Dispersive X-RAY Spectroscopy (EDS
Methcdh A$ERA Final Rule, EPA Federal Register (40 CPR, Part 763), Vol. 52, No. 210, October 30, 1987
Sa le identification Analysis Parameters
P:ojcet/Sito; 250 Rroadway. NY. NY TW. Sample No.: 5312 - 59087
Floors 31. 27, 19, 8
Dare Received: 9 6 Grid Openings Analyzadt 4
Project Sample No.#13 Average Grid Opening:_ 106.00 um
Air volume: 1800 liters 5004
Total Area Anclyzeds 00
Filter Types MCP 25 — diem. Pore Size, 0.4$ um Analytical sensitivityi 22.2 s/mm2
Effective Areas 385 vvim 0.0048 s/ee
FIBROUS PARTICULATES ANALYZED
Number Qhnarved CONCENTRATION
Total
single Matrix Total. Struct. . Filter Air
Fibers Bundtoa Gushers Struct. Struct. ,=sum struct/mm12 struct/aa nee/m3
Chrysotilo Asbostoo 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 0.0000 N/A
t:o Identification 0 0 C 0 0 0 0.0 0.0000 N/A
Totals (All Strvoturnd) 0 0 0.0 0.0000 N/A
The estimated uncorteinty of thi0 araiyci5 is 1 standard deviation.
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Non-asbestos fiber i.d. (EDS/SAED): None detected
Amphibole Asbestos Type: None detected
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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 000105989
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