NYC-WTC_000200913

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone: (212)'353-8280 Fax: (212) 353-8306

* Attn: Mr. Bernard Orlan Received: 5/14/02 7:00:00 PM N.Y.C. Board of Educauon ATC Group#: 7739 28-11 Queens Plaza North Analysis Date: 5/14/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: PS 89M 201 Warren Street, New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos /Ifeff Non Asbestos # Structures Sensitivity Concentration Sample Volume Analyzed Asb Typefs) 0.3a-5 5fi (S/cc) (S/mm^) (S/cc) Notes

01 . 1840.00 0.0450 0 NoneDetected 0 0 0.0047, <22.24 <0.0047 7739 -I

02 , 1840.00 0.0450 0 ' None Detected 0 0 - 0.0047 . <22.24 ' <0.0047 7739 -2

“a a, T904.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 7739-3 ,

(1880.00 0.0450 0 NoneDetected 0 0 0.0046 <22.24 <0.0046 7739-4\

05 1888.00 0.0450 0 None Detected .0 0 0.0045 <22.24 <0.0045 7739 -3

06 1880.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 7739-6

07 i 1840.00 0.0450 0 NoneDetected 0 0 0.0047 <22.24 <0.0047 7739 -7-

MARK PEYSAKHOV MICHAEL A. GQRYCKI.. Ph.D.

Analyzed by; ^proved by:

__________________________________________________ _______ / I Disclaimer: The iaboratory is not responsible for data reported in structuresfcc, which is dependent on volume collected by non-laboratory personnel. This lab resoonsible ' i for data reported in structures/mmL This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to claim' i 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 S5% i confidence limits and laboratory and analysis'accuracy and precision) is available upon request.

Accreditsd for NVLAP PLM/TEM #101187-0. NY State ELAP #10879

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