NYC-WTC_000206312

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. Fabio Pedone Received: 7/20/02 5:00:00 PM Warren & Panzer Engineers , P.C. ATC Group#: 8551 228 E. 45th Street Analysis Date: 7/21/02 New York NY 10017 Fax: (212)922-0630 Phone: (212)922-0077 Project: NYC DEP, W&P# 1079.01.02 110 Liberty 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 P'olume Analyzed Asb Type(s) O.Sft-S S/t (S/cc) fS/mm^) (S/cc) Notes

DEOl 1575.00 0.0562 0 None Detected 0 0 0.0043 <17.79 <0.0043 8551 -1

DE02 1575.00 0.0562 0 None Detected 0 0 0.0043 <17.79 <0.0043 8551 -2

DE03 1575.00 0.0562 0 None Detected 0 0 0.0043 <17.79 <0.0043 8551 -3

DE04 1575.00 0.0562 0 None Detected 0 0 0.0043 <17.79 <0.0043 8551 -4

DEOS 1575.00 0.0562 0 None Detected 0 0 0.0043 <17.79 <0.0043 8551 -5

ROMAN PEYS. tv MICHAEL A. GORYCKI, Ph.D.

Analyzed by: A^roved 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 sonly responsible tor data reported in structures/mm7 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 fimits and laboratory and analysis' accuracy and precision) is available upon request

Accredited for NVLAP PLM/TEM #101187-0, NY State ELAP #10879

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NYC-WTC_000206312