NYC 9/11 Public Portal Document
ATC Environmental, Inc.
104 East 25th Street
I 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
I 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 Final Rule, EPA Federal Register (40 CFR, Part 763), Vcl. 52, No. 210, October 30, 1937
Sample Identification Analysis Parameters
Project/Site: Tribeca Towers, 105 Duane St., NY, NY TEM Sample No.: 5770 - 62555
I Date Received: 10/26/01
Hallways
Grid Openings Analyzed: 6
Project Sample No.: H-1 Average Grid Opening: 106.00 um
Air Volume: 1300 liters Total Area Analyzed: 0.0674 mm2
Filter Type: MCE 25 mm diam., Pore Size: 0.45 um Analytical Sensitivity: 14.8 s/mm2
Effective Area: 395 mm2 0.0044 s/cc
-----------------------------------
FIBROUS PARTICULATES ANALYZED
Number Observed CONCENTRATION
Total
Single Matrix Total. struct. Filter Air
Fibers Bundles Clusters Struct. Struct, s=5um
Struct/mm2 Struct/cc nom/m3
Cnrysotile Asbestos 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 n 0 0 0 0 0.0 0.0000 0
Total asbestos (includes ambiguous structures)
I Non-Asbestos
No Identification
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.0
0.0
0.0
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 - iod.
This laboratory is in compliance with the quality specified r ethod.
I Analyzed by: Report Revie
Marek Peysakhov Michael A. Go,
Director of El
NYC-WTC 000104324
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