NYC-WTC_000205744

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone: (212) 353-8280 Fax: (212) 353-8306 WFC Attn: Mr. Fabio Pedone Received: 6/27/02 7:00:00 PM Warren & Panzer Engineers , P.C. ATC Group#: 8313 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 47 Ann Street

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) 0.5/1-5 5/t (S/cc) (S/mmf (S/cc) Notes

01 1440.00 0.0562 0 None Delected 0 0 0.0048 <17.79 <0.0048 S3/3 -/

02 1440.00 0.2810 0 CHRYSOTILE 3 7 0.0048 88.97 0.0238 S313

03 1440.00 0.0562 0 None Detected 0 0 0.0048 <17.79 <0.0048 83/3 -3

04 1440.00 0,0562 0 None Detected 0 0 0.0048 <17.79 <0.0048 83/3 -4

05 1440.00 0.1686 0 CHRYSOTILE 1 2 0.0048 53.38 0.0143 83/3 -5

02QC 1440.00 0.8430 0 CHRYSOTILE 10 5 0.0048 266.90 0.0714 Reanalysis 3313 -6

MARK PEYSAKHQV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Approved by:

Disclaimer: The aboratoy is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab VtSnly responsible for data reported in struclures/mmT This report may not be reproduced, except in lull, 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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