NYC-WTC_000193357

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 6/20/02 8:00:00 PM N.Y.C. Board of Education ATC Group#: 8193 28-11 Queens Plaza North Analysis Date: 6/20/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212) 477-8941 Project: H.S. for Leadership & Public Service

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos # Structures Sensitivity Concentration Sample Coliime Analyzed Asb Type(s) O.S/i-S S/i (S/cc) (S/mm^) (S/cc) Notes

20 1872.00 0.0450 0 None Detected 0 0 0.0046 <22.24 < 0.0046 SI93 -/7

2> 1872.00 0.045C 0 None Detected 0 0 0.0046 <22.24 <0.0046 SI93 -/S

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Aoproved by:

(L<- Disclaimer. The laboratory is not responsible for data reported in stnjctures/cc, which is dependent on volume colleated by non-laboratory personnel. This lab is only responsible ' for data reported in structures/mmT This report may not be reproduced, except in full, without written approval by ATC Associates Ino. This report may not be used to claim product endorsement by NVLAP or any other agency of the U.S. Government. This reports relates only to the samples reported above. Quality control data (including 95% confidence limits and laboratory and analysis' accuracy and precision) is available upon request.

Accredited for NVLAP PLMTEM #101187-0, NY Slate ELAP #10879

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