NYC-WTC_000208244

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, ?<Y 10010 Phone: (212) 353-8280 Fa:- (212) 353-8306

-Attn; Mr. Bernard Orlan Received: 9/10/02 8:00:00 AM N.Y.C. Board of Educatioi .4.TC Group#: 8828 .28-11 Queens Plaza North .Analysis Date: 9,10/02 Long Island City. NY' 11101

Fax: (212)475-4122 Phone: (212)477-8941

Project; NYC-BOE Murray Bergtraum HS 411 Pearl Street, New York, NY.

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 Coliime Analyzed Asb Type(sj 0.5U-3 3/1 (S/cc) (S/mm^) (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 8828 -I

02 1928.00 0.0450 0 None Detected 0 0 0 0044 <22 24 <0.0044 8828

03 1912.00 0.0450 0 None Detected 0 0 0 0045 <22 24 <0 0045 8828 -2

04- 1912.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 .8828 -4

05 1912.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 8828 -3

06- 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 SS2S -6

07 1920.00 0.0450 0 None Detected 0 0 0,0045 <22,24 <0.0045 SS28

MARX PEYSAKHOV MICHAEL A. GORYCKI, Ph D. 3 Analyzed by: Aoproved by:

Disclaimer: The laboratory is not responsible for rata reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab is only responsible for data reported in structures/mnY. This report m iy 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 age icy 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 PLMAEM #101187-0, NY Mate ELAP #10879

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NYC-WTC_000208244