NYC-WTC_000203601

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 4/30/02 10:00.00 PM N.Y.C. Board of Education ATC Group#: 7591 28-11 Queens Plaza North Analysis Date: 4/30/02 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 # Structures Sensitivity Concentration Sample l^olume Analyzed A sb Type(s) 0.5,u-5 5^ (S/cc) (S/mm/ (S/cc) Notes

11 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -8

12 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -9

13 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -10

14 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 ./!

15 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -12

16 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -12

17 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7591 -14

18 1921.00 0,0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7591 -15

19 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7591 -16

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: iproved 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/mmT 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 precision) is available upon request.

Accredited for NVLAP PLNVTEM #101187-0, NY State ELAP #10879

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