NYC-WTC_000193143

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: 6/7/02 9:00:00 PM N.Y.C. Board of Education ATC Group#: 8001 28-11 Queens Plaza North Analysis Date: 6/8/02 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 Volume Analyzed Asb Type(s) O.Sfi-S 5/1 (S/cc) (S/mm^) (S/cc) Notes

04 1856.00 0.045C 0 None Detected 0 0 0.0046 <22.24 <0.0046 SOOI -I

05 1864.00 0.045C 0 None Detected 0 0 0.0046 <22.24 <0.0046 8001 -2

06 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 SOOI -3

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

08 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 SOOI -5

09 1808.00 0.045C 0 None Detected 0 0 0.0047 <22.24 <0.0047 8001 -6

10 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8001 -7

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D,

.pproved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratoiy personnel. This lab isttontfresponsible fcrdata reported in structures/mmT This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to claim p-nduct 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 PLM/TEM #101187-0, NY State ELAP #10879

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NYC-WTC_000193143