NYC 9/11 Public Portal Document
ATC Environmental, Inc.
I 104 East 25th Street
New York, New York 10010
ATC Associates Inc. Approved N.Y. State ELAP #10879
104 East 25th Street ACCREDITED NVLAP Lab Code # 1187
New York, NY 10010 Report Date: 10/26/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM)
With Fiber Identification by Selected-Area Electron Diffraction (SAEDI and Energy-Dispersive X-RAY Spectroscopy tEDS)
Method: AHERA Final Rule, EPA Federal Register (40 CFR, Part 763) Vcl. 52 No. 210 October 30 197
Sample Identificatior. Analysis Parameters
Project/Site: Tribeca Towers, 105 Duane St., NY, NY TEM Sample No.: 5771 - 62566
I Date Received: 10/26/01
Various Sites
Grid Openings Analyzed: 6
Project Sample No.: 01 Average Grid Opening: 106.00 um
Air Volume: 1300 liters Total Area Analyzed: 0.0674 mm2
Filter Type: MCE 25 mm dram., Pore Size: 0.45 um Analytical Sensitivity: 14.8 s/mm2
Effective Area: 385 mm2 0.0044 s/cc
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FIBROUS PARTICULATES ANALYZED
Number observed CONCENTRATION
Total
Single Matrix Total. Struct. Filter Air
Fibers Bundles Clusters Struct. Struct. s=sum
Struct/mm2 Struct/cc nam/m3
Chrysotile Asbestos 0 0 0 0 0 C 0.0 0.0000 0
Amphibole Asbestos 0 0 0 0 C 0 0.0 0.0000 0
I Ambiguous 0 0 0 0 0 C 0.0 0.0000 0
I Total asbestos (includes ambiguous structures)
Non-Asbestos
No Identification
0
0
0
0
0
0
0
0
0
0
0
C
C
0
C.0
0.0
C.0
0.0000
0.0000
0.0000
0
N/A
N/A
I Totals (All Structures)
The estimated uncertainty of this analysis is 1 standard deviation.
0 0 0.0 0.0000 N/A
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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.
I Analyzed by: Report Reviewed by;
Marek Peysakhov Michael A. Gorycki, Ph.D.
I Director of Electron Microscopy
NYC-WTC 000104351
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