NYC-WTC_000188427

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 5/12/02 6:00:00 PM N.Y.C. Board of Education ATC Group#: 7722 28-11 Queens Plaza North Analysis Date: 5/12/02 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 It Structures Sensitivity Concentration Sample Analyzed Asb Type(s) O.Sp-S S/i (S/cc) (S/mm^) (S/cc) Notes

17 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7722 -17

18 1920.00 0.0450 0 None Detected 0 0 0,0045 <22.24 <0.0045 772? -IS

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: ipproved by:

Disclaimer Ttie laboratoiy is not responsible tor data reported in atructures/cc, which is dependent on volume collected by non-taboratoty personnel. This feo only responsible lor 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 ertooisement 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 PLMfTEM #101187-0, NY State ELAP #10879

Page 5 Ilf 3

CITY_21MC100_003080231

NYC-WTC_000188429