NYC-WTC_000206537

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: 6/28/02 8:00:00 AM Warren & Panzer Engineers , P.C. ATC Group#: 8319 228 E, 45th Street Analysis Date: 6/28/02 New York NY 10017 Fax: (212) 922-0630 Phone: (212) 922-0077 Project: NYC-DEP W & P File #: 1079.01.02 26 Wall 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 Colume Analyzed Asb Type(s) O.Sft-S 5fi (S/cc) (S/mmf (S/cc) Notes

03 1862.00 0.0450 0 CHRYSOTILE 1 0 0.0046 22.24 0,0046 8319 -!

04 1683.00 0.1686 0 CHRYSOTILE 2 1 0.0041 53.38 0.0122 8319 -2

05 1688.00 0.2248 0 CHRYSOTILE 4 0 0.0041 71.17 0.0162 Si 19 -J

06 1709.00 0.1124 0 CHRYSOTILE 1 1 0.0040 35.59 0.0080 8319 -4

07 1719.00 0.1686 0 CHRYSOTILE 2 I 0.0040 53.38 0,0120 83/9 -S

ROMAN PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

A^roved by:

Disclaimer: The laboratory is not responsible for data reported in structures/co, which is dependent on volume collected by non-laboratory personnel. This lab is'tJTily responsible for data reported in structures/mmY 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 NVL^P 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_000206537