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: 10/08/01
ASBESTOS FIBER iUlALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM)
With Fibe;r Identification by Selected-Area Electron Diffraction (SAED) and Energy-Dispersive X-RAY Spectroscooy (EDS]
Method; AHERA Final Rule, SPA Federal Register (40 CPR, Part 763), Vol. 52, No. 210, October 30, 1587
Sample TdenCificacipn Analysis Parameters
Project/Site: New Stu-\n^ssant H.S., 345 Chambers 5t. , NY, NY TEM Sample No.: 5635 60S70
Exterior of 'juilding & Roof
Date Received: 10/08/01 Grid Openings Analyzed:__ 4
Project Sample No . :NSHA2^H&F^l 0/.82^ Average Grid Opening: 106.00 um
Air Volume: 1R59 liters; Total Area Analyzed :0^.04Jj0 m2^
Filter Type: MCE 25 mm diar-.Pore Size: 0.45 um Analytical Sensitivity: 2 2.2 s/miT.2
Effective Aren ; 385 miTi2 C.9045 s/cc
FIBROUS PARTICULATES TkNALYZED
Number Observed CONCENTRATION
Total
Single Matrix Total. Struct. Filter Air
Fiber/; Bundles Clusters Struct. Struct > = 5um Struct/mm2 Struct/cc ncrm/m3
Chrysotile Asbestos 0 0 0 C 0 0 0.0 0.0000 0
Amphibole Ash>estos 0 0 0 0 0 0 o.c 0.0000 0
Ambiguous 0 0 0 0 0 0 0.0 C . 0000 0
Total asb'2stos (includes ambiguous structures] 0 0 0.0 0.0000 0
Non-Asbestos 0 0 0 0 0 0 0.0 0.0000 N/fi
No Identification 0 0 0 0 0 0 0.0 O.OOOG N/A
Totals (All Structures' 0 0 0.0 O.OOOC N/A
The estimated uncertainty uf 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.
An.alyzed by: Report Reviewed by:
Marek Peysakhov Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
CONFIDENTIAL, CITY_21MC1OO_OO3469852
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176403
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