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: 10/25/01
ASBESTOS FIBER ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY (TEM)
With Fibe:r 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: New Stuyvesanu K.S., 345 Chambers St., NY, NY TEM Samule No.; 5766 62342
Exterior fc Interior of Building & Roof
Date Received: 10/25/01 Grid Openings Analyzed:__4
Project Sample No■: -0 Average Grid Opening: 106.00 um
Air Velums: 1944 liters Total Area Analyzed: 0.0450 mm2
FiIter Ty^e: MCE 25 mm cian.. Pore Size: 0.45 urn Analytical Sensitivity: 22.2 s/mm2
Effective Are: : 385 mm2 C. 0 04 4 s/cc
FIBROUS PARTICULATES ANALYZE!.
Number Observed CONCENTRATION
Total
Singl€; Matrix Total, struct. Filter Air
Fibers, Bundles Clusters Struct. Struct >»5uni Struct/mm2 Struct/cc nqtn/m3
Chrysotile /isbescos 0 0 0 0 0 0 C.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 asbeistos (includes anbiguous structures) c 0 0.0 0.0000 0
Non-Asbest.os 0 0 0 0 0 0 0,0 0 .0000 N/A
No Identification 0 0 0 0 □ 0 O.C' 0.0000 N/A
Totals (All Structures) 0 0 0.0 0.0000. N/A
The estimcted 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;
Michael A. Gorycki, Ph.D. Michael A. Gorycki, Ph.D.
Director of Electron Microscopy
CONFIDENTIAL, CITY_21MC100_003473354
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000177614
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