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: 10/25/01
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
I Sample Identification Analysis Parameters
Project/Site: Tribeca, 105 Duane St., NY, NY TEM Sample No.: 5762 - 62227
I Date Received: 10/25/01
Various Sites
Grid Openings Analyzed: 6
Project Sample No.: 13 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: 385 mm2 0.0044 s/cc
----------------------------------- ----------------------------------------------------------------------------------------------
FIBROUS PARTICULATES ANALYZED
Number Observed CONCENTRATION
Total
Single Matrix Total. Struct. Filter Air
Fibers Bundles Clusters Struct. Struct. >=Sum Struct/mm2 Struct/cc ncxm/m3
Chrysotile 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 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.
I 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 method.
I Analyzed by: Report Reviewed by:
I Marek Peysakhov Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
NYC-WTC 000104051
OCR can misread numbers and units. Confirm readings against the page image before using them.