NYC-WTC_000193448

NYC 9/11 Public Portal Document

ATC Associates 10^ East 25 Street, New York, NY 10010 Phone; (212) 353-8280 Fax:(212)353-8306 wc Attn: Mr. Bernard Orlar Received: 6/26/02 9:10:00 PM N.Y.C. Board of E ducation ATC Group #: 8296 28-11 Queens Plaza North Analysis Date: 6/27/02 Lone Island City, NY 11101 Fax: (212) 475-4122 Phone: (212)477-8941 Project: H.S. for Leadership & Public Service 90 Trinity Place, New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos /Irea Non Asbestos # Structures Sensitivity Concentration Sample f^oluine Analyzed Asb Type(s) U.SI,-5 5fl (S/cc) (S/mm^) (S/cc) Notes

04 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8296 -I

05 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8296 -2

06 1848.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8296 -3

07 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8296 -4

08 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8296 -5

09 1856.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8296 -6

10 1816.00 0.0450 0 None Defected 0 0 0.0047 <22.24 <0.0047 8296 -7

ROMAN PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: iproved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laooratory personnel. This4b i orify responsible for data reported in structures/mm’. Tins report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not teusen to claim product endorsement by NVLAP or ary 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 PLM/TEM #10" 187-0, NY State ELAP #10879

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CITY_21MC100_003094685

NYC-WTC_000193448