NYC-WTC_000214730

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone; (212) 353-8280 Fax:(212)353-8306 TC Attn: Mr. Bernard Orlan Received: 6/14/02 9:00:00 PM N.Y.C. Board of Education ATCGroup#: 8106 28-11 Queens Plaza North Analysis Date: 6/15/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212) 477-8941

Project: NYC-BOE PS234M Project#: 14584-1823

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos If Struaures Sensitivity Concentration Sample Volume Analyzed Asb Typefs) O-Sp-S 5m (S/cc) (S/mm^) (S/cc) Notes

01 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 8106 -I

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 < 0.0045 8106 -2

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 8106 -3

04 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 8106 .4

05 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 8/06 -5

06 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 8106 -6

07 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 8106 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Amroved by:

Disclaimer The laboratory is not responsible for data reported in structores/cc, which is dependent on volume collened by non-laboratory personnel. ThiVtSb is only responsible for data reported in structures/mm'. 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. Qualify 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_000214730