NYC 9/11 Public Portal Document
ATC Environmental, Inc.
104 East 25th Street
New York, New York 10010
N.Y.C. Board of Education Approved N.Y. State ELAP #10879
28-11 Queens Plaza North ACCREDITED NVLAP Lab Code # 1187
Long Island City, NY 11101 Report Date; 10/20/01
ASBESTOS FIBER /ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM)
With Fiber Identification by Selected-Area Electron Diffraction (SASD) and Energy-Dispersive X-RAY Spectroscopy (EDS)
Method; ZiHERA Final Rule, SPA Federal Register (40 CFR, Part 763*, Vol. 52, No. 210, October 30, 1987
Sample Ids'ntification Analysis Parameters
Project/Site: Nevz Stuyvesaht H.S., 345 Chambers St., NY, NY TEM Sample No.; 5730 61711
Various Sites J'nside and Outside the Building
Date Received: 10/19/01 Grid Openings Analyzed:__ 4
Project Sample No,: 21 Average Grid Opening: 106.00 urn
Air Volume-.196 e Jyterp Total Area Analyzed: 0.0450 mm2
Filter Type; MCE 25 mm diain. Pore Size: 0.45 urn Ana1ytica1 Sensitivity; 22,2 s/mm2
Effective Area: 365 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/mrn2 Struct/cc ncnn/m3
Chrysotile Asbestos 0 0 0 0 0 0 0.0 0.0000 c
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 asb€;stos (includes ambiguous structures) 0 0 o.c 0.0000 c
Non-Asbest.os 0 0 0 C 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 estimc.ted 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.
This laboratory is in compliance with the quality specified for the method.
Analyzed by. Report Reviewed by:
Roiran Peysakhov Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
CONFIDENTIAL, CITY_21MC100_003470181
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176435
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