NYC 9/11 Public Portal Document
10/01/2001 10:42 FAX 212 353 8306 ATC 11015/0_C
ATC Environmental, Inc.
104 East 25th Street
New York, New York 10010
N.Y.C. Housing Authority Approved N.Y. State ELAP #10875
250 Broadway, 16th Floor ACCREDITED NVLAP Lab Code # 1157
New York, NY 10007 Report Date: 09/16/01
BESTOS FIBER ANALYSIB BY TRANSMISSION ELEcrRON MICROSCOPY (TEM)
X-RAY spectroscopy (LDS)
With Fiber Identification by selected-Ares Electron Diffraction (SAO) and Snergy-Diepers_ve
Methods 24 A Final Rule, EPA Federal Register (a0 CFR, Part 7631, Vol. 53, No. 210, October 30, 1987
Saa«n1e Identifieetior_ Analysis Par,-,meters
Prcjcct/Sites 250 Brccdwav, NY. NY TEM Sample No-s $512 - 59084
Floors 31. 27. 19.!
Date Receiveds 09 i6 01 Grid Openings AnalyzcSç..4
Project Sample )1o. -10 Average Grid Opening- 106.00 um
Air volume: 1800 liters Total Area Analyzeds 0.0a50 5512
Analytical SonSit- vityi, 22.2 s/mom
Filter Typos ME 25 nun diem., Pare Size: 0.45 um
Effective Area: 385 =2 0.0048 s/cc
FIBROUS PARTICULATES.ANALYZED
u, er observed CONCENTRATION
Total
Single Matrix Total. Struct. Filter Air
£3br:rz Bundles Clusters Struct. Strut. ar3u5 Struct mmz Strsct cc 525151
0 0 0 0.0 0.0000 0
csrysotile Asboato5 0 0 0
0 0 0 0 0.0 0.0000 0
Amphibole Asbestos 0 0
Ambiguous 0 0 a 0 0 0 0.0 0.0000 0
0 0 0.0 0.0000 0
Total asboatos (includes ambiguous structu--ms)
0 0 0.0 0.0000 N/A
Non-Asbestos 0 0 0 0
0 0 0 0 0.0 0.0000 N/A
We Identification 0 0
0 0 0.0 0.0000 N/A
Totals (All Structures) S
The estimated viteertainty of thin 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 meths
Analyzed by: Report Reviewed by:
Roman Peysakhov Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
NYC-WTC 000106089
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