NYC-WTC_000213923

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 6/13/02 8:00:00 PM N.Y.C. Board of Education ATCGroup#: 8085' 28-11 Queens Plaza North Analysis Date: 6/13/02 Long Island City, NY 11101

Fax: (212)475-4122 Phone: (212)477-8941 Project: H.S. Of Economics And Finance

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 Volume Analyzed Asb Type(s) 0.5p-S 5p (S/cc) (S/mm^) (S/cc) Notes

10 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 80S5--8

II 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8085-9

12 1840.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 8085-10

13 1816.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 8085'-I I

14 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 S0S5-/2

15 1816.00 0.0450 0 None Delected 0 0 0.0047 <22.24 <0.0047 8085-13

16 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8085-14

17 1824.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 8085'-15

18 1832.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 8085-16

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. Tl is only responsible for data reported in structures/mm' 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 Ihe 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

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