NYC-WTC_000206324

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 9:30:00 PM Warren & Panzer Engineers , P.C. ATC Group#: 8559 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 10 Maiden Lane

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 yolume Analyzed Asb Type(s) 0.5ft-5 5/1 (S/cc) (S/mm') (S/cc) Notes

01 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 <0.0042 8559 -I

02 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 <0.0042 8559 -2

03 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 <0.0042 8559 -3

04 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 <0.0042 8559 -4

05 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 <0.0042 S559 -5

ROMAN PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

.pproved by;

Disclaimer; The laboratory is not responsible for data reported in structuies/cc, which is dependent on volume by non-laboratory personnel. Thi 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 PLM/TEM #101187-0, NY State ELAP #10879

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NYC-WTC_000206324