NYC-WTC_000217686

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; 6/25/02 9:00:00 PM N.Y.C. Board of Education ATC Group#: 8280 28-11 Queens Plaza North Analysis Date: 6/25/02 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.Sft-S 5ft (S/cc) (S/mm^) (S/cc) Notes

04 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 S280 -I

05 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8280 -2

06 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 , 8280 -5

07 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8280 -4

08 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 S2S0 -5

09 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8280 -6

10 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8280 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: iroved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. ThisiatJis only responsible for data reported in structures/mm7 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 PLIWTEM #101187-0, NY State ELAP #10879

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