NYC-WTC_000193357

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: 6/20/02 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 Volume Analyzed Asb Typefs) 0.5fi-5 5ft (ly/cc) (S/ntm^) (S/cc) Notes

04 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8/93 -/

05 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8/93 -2

06 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24’ <0.0047 8193 -3

07 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8193 -4

08 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8/93 -5

09 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8193 -6

10 180S.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8193 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by; ^proved by:

: Disclaimer. The laboratory is not resoonsible for data reported in structures/cc, which is dependent on volume collected by non-laboratoty petsonnet. This lab is only responsible ' fo' data 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 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 PLM/TEM #101187-0, NY State ELAP #10879

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NYC-WTC_000193357