Chain of custody for air samples from 125 Water Street,

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 U Phone:(212)353-8280 Fax:(212)353-8306

Attn: Fred Burkhardt Received: 9/19/02 4:00:00 PM ATC Associates Inc. ATC Group #: 8863 104 East 25th Street Analysis Date: 9/23/02 New York NY 10010

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

Project: DEP Cleaan-up Project #: 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 Ash Type(s) 0.5,u-5 sp (S/cc) (S/mm') (S/cc) Notes

04 1850.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 886t. -1

05 •' 1.850.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8863 -2

06 1850.00 0.0450 0 None Detected 0 0 0.0046 < 22.24 <0.0046 -3

07 - 1550.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8863 -4

US 1850.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8863 -5

09 1850.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 163 -6

t0 1850.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046. 8863 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

.analyzed pproved by

Disclaimer The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This la is only responsible for data reported in structures/mm' 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 PLMITEM #101187-0. NY State ELAP #10879

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