NYC-WTC_000204844

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone; (212)353-8280 Fax;(212) 353-8306

Attn: Mr. Bernard Odan Received: 4/30/02 10:00:00 PM N.Y.C. Board of Education ATC Group#: 7590 28-11 Queens Plaza North Analysis Date: 4/30/02 Long Island City. NY 11101 Fax: (212) 475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 150M Project#: 14584-0824

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 Volume Analyzed Asb Type(s) 0.5/1-5 5/t (S/cc) (S/mmO (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 < 0.0045 7590 -I

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7590 -2

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7590 -5

04 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7590 -4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7590 -5

06 1920.00 0.C450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7590 -6

07 1928.00 0.C450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 7590 -7

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 collected 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 NVLA P 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/TE.M #101187-0, NY State ELAP #10879

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NYC-WTC_000204844