NYC-WTC_000194188

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 5/3/02 7:45:00 PM N.Y.C. Board of Education ATCGroup#: 7621 28-11 Queens Plaza North Analysis Date: 5/4/02 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 f7otume Analyzed Asb Type(s) O.S/t-S (S/cc) (S/mm^) (S/cc) Notes

17 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7621 -/7

18 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 762/ -/a

19 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7621 -19

20 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7621 -20

21 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 762/ -21

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph D.

Analyzed by: approved by:

Disclaimer The laboratory is not responsible for data reported in structures/cc, which is dependent on volume by non-laboratory personnel. This lab is only responsible for data reported in structures/mmL 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 precisian) is available upon request

Accredited for NVLAP PLM/TEM #1011874), NY State ELAP #10879

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