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Chain of Custody for Asbestos Fiber Analysis at P.S. 234M,

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Documentation of asbestos fiber analysis by TEM performed on samples from P.S. 234M received on April 6, 2002.

NYC-WTC_000181709–000181727
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NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 4/6/02 4:00:00 PM N.Y.C. Board of Education ATC Group#: 7344 28-11 Queens Plaza North Analysis Date: 4/6/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 234M Project#: 14584-1823

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) 0.5f,-5 5fi (S/cc) (S/mm^) (S/cc) Notes

08 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 -8

09 1928.00 0.0450 0 None Delected 0 0 0,0044 <22.24 <0.0044 7344 -9

10 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 -10

11 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 -II

12 1920.00 0.0450 0 None Delected 0 0 0.0045 <22.24 <0.0045 7344 -12

13 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 .13

14 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 -14

15 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7344 -13

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Approved by:

Disclaimer: The laboratory is not responsible lor data reported in structures/cc, which is dependent on volume collected by non-laboratoiy personnel. This lab is only responsible for data reported in structures/mmi 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 lor NvLAF PLMH'EM #101187-0, NY State ELAP #10879

Page 2 of 2

CONFIDENTIAL, CITY_21MC100_003402678 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000181710

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NYC-WTC_000181710Source: NYC Law Department, mirrored locally

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