TEM analysis letter for DEP, Oct 2002

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: Benjamin Sallemi Received: 10/2/02 8:00:00 AM

• ATC Associates Inc. ATC Group #: 8923 104 East 25th Street Analysis Date: 10/2/02 New York NY 10010

Fax: (212) 353-3599 Phone: (212) 353-8280

Project: DEP Clean-up ATC Project N: 22906-0002 125 Cedar 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.SP-5 5,u (S/cc) (S/mm) (S/cc) Notes

1 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 8923 -/

2 <2.28 <0.0049 180.00 0.4384 0 None Detected 0 0 0.0049 8923 -2

3 ;180.00 0.4384 0 None Detected 0 0 0.0049 < 2.28 < 0.0049 8923 -3

4 • 1804.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 8923 -4

5 1804.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8923 -5

MICHAEL A. GORYCKI, Ph.D. MARK PEYSAKHOV

Analyzed by: ~ .Ap roved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collectZyon-laboratory personnel. This lab y responsible for data reported in structures/mm2. This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to ciaim 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 PLMITEM #101187-0. NY State ELAP #10879

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