NYC 9/11 Public Portal Document
ATC Environmental, Inc.
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: 09/29/01
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’, Vol. 52., No. 210, October 30, 1987
Sample Identification Analysis Parameters
Project/Site: £0^ectC£Str^etj Nyj NY TEM Sample No.: 5579 - 59760
' ' Foors 6, 7, 3, 4, 11, 2, l/Lobby
, J Date Received: 09/29/01 Grid Openings Analyzed:__ 6
Project Sample No.: T37 Average Grid Opening: 106.00 um
Air Volume :1290 liters Total Area Analyzed: 0.0674 mmS
Filter Type: MCE 25 mm diam., Pore Size: 0.45 um Analytical Sensitivity: 14.8 s/mm2
Effective Area: 385 mm2 0.0044 s/cc
FIBROUS PARTICULATES ANALYZED
Number Observed CONCENTRATION
Total
Single Matrix Total. Struct. Filter Air
Fibers Bundles Clusters Struct. Struct. >=5uTn Struct/mm2 Struct/cc nqm/m3
Chrysotile Asbestos 0 0 0 0 0 0 0.0 0.0.000 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
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 estimated uncertainty of this 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.
r-\
This laboratory is in compliance with the quality specified for the method.
Analyzed by: Report Reviewed by:
Marek Peysakhov Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
U„J
NYC-WTC_000174852
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