Asbestos fiber analysis results by TEM, April 2002

NYC 9/11 Public Portal Document

Attn; Mr. Bernard Orlan Received: 4/9/02 8:00:00 PM N,Y,C. Board of Education ATC Group#: 7361 28-11 Queens Plaza North Analysis Date: 4/9/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: New Stuyvesant H. S., 345 Chambers St., NY , 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 k'olame Analyzed Asb Type(s) 9.5fi-5 5fi (S/cc) (S/mm’) fS/cc) Notes

17 1928.00 0.0450 0 None Delected 0 0 0.0044 <22.24 <0.0044 7361 -17

18 1936.00 0.0450 0 None Detected 0 0 0.0044 < 22.24 <0.0044 7361 -IS

19 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7361 -19

20 1928.00 0.0450 0 None Detected 0 0 0,0044 <22.24 <0.0044 7361 -20

21 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7361 ^21

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: Approved by;

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab is iponsible for data reported in structures/mm’. This report may not be reproduced, except in full, without wntten 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 PIMH-EM #101187-0, NY State ELAP #10879

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