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Asbestos fiber analysis results, Jan 2002

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Laboratory report page containing transmission electron microscopy (TEM) results for asbestos fiber analysis of samples from a school playground and roof.

NYC-WTC_000175802–000175803
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NYC 9/11 Public Portal Document

ATC Associates 1'04 East 25 Street, New York, NY 10010 Phone;(212) 353-8280 Fax:(212)353-8306

Attn: Mr. Bernard Or Ian Received: 1/22/02 , 5:00:00 AM N.Y.C. Board of Education 28-11 Queens Plaza North ATC Group #: 6398 Long Island City, NY 11101 Analysis Date: 1/22/02 Fax: (212)475-4122 Phone: (212)477-8941 Project; PS 89M 201 Warren Street, New York, NY

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) O.Sfi-S (S/cc) (S/mm^) (S/cc) Notes 01 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -1

02 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -2

03 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -3

04 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -4

05 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -5

06 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -6

07 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -7

08 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6398 -8

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 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 laborato^ and analysis' accuracy and precision) is available upon request

Accredited tar NVLAP PLMTEM #101187-0, NY State ELAP #10879

CONFIDENTIAL, CITY_21MC100_003433514

SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175802

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NYC-WTC_000175802Source: NYC Law Department, mirrored locally

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