Second volume of ambient air sampling and visual observation results for 105 Duane Street after the WTC collapse.
NYC-WTC_000104321–000104551Folder label: “105 DUANE ST 1001650, 151/1”
OCR status: ok · source: pdftotext
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 I 104 East 25th Street New York, NY 10010 ACCREDITED NVLAP Lab Code # 1187 Report Date: 10/26/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM) With Fiber Identification by Selected-Area Electron Diffraction (SHED) 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: Tribeca Towers, 105 Duane St., NY, NY TEM Sample No.: 5771 - 62572
Various Si-es Date Received: 10/26/01 Grid Openings Analyzed: 6
Project Sample No.: 07 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. >=5um Struct,'mm2 Struct/cc nom/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
I Ambiguous 0 0 0 0 0 0 0.0 0.0000 0
I 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
I Totals (All Structures) The estimated uncertainty of this analysis is 1 standard deviation. ---------------------------------------------------------------------------------------------------------------------------------- 0 0 0.0 0.0000 N/A
' 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.
' Analyzed by: Report Reviewed by:
Michael A. Gorycki, Ph.D. I Marek Peysakhov Director of Electron Microscopy
I NYC-WTC 000104357
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Summary of ambient air sampling and visual observations at 105 Duane Street following the WTC collapse.
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