NYC-WTC_000189240

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone: (212) 353-8280 Fax: .(212) 353-8306 Cwc Attn; Mr. Bernard Orlan Received: 3/23/02 4:40:00 PM N.Y.C. Board of Education ATC Group#: 7182 28-11 Queens Plaza North Analysis Date: 3/23/02 Long Island City, NY 11101 Fax; (212) 475-4122 Phone: (212) 477-8941 Project: NYC-BOE PS 234M Project#: 14584-1823 292 Greenwich St., New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Nou Asbestos # Structures Sensitivity Concentration Sample VdIu,,,/, Analyzed Asb Type(s) 0.5fi-5 Sfi (S/cc) (S/mm^) (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182 -1

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182 -2

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182 -3

04 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182-4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182 -5

06 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182-6

07 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7182 -7

ROMAN PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Approved by

Disclaimer: The laboratory is not responsible for data reported in structurestec, which is dependent on volume collected by non-laboratory personnel. This lab irSnly responsible for data reported in structures/mmT This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to ciaim 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 PLM/TEM #101187-0, NY Stats ELAP #10879

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NYC-WTC_000189240