Chain of custody for air samples from 125 Water Street,

NYC 9/11 Public Portal Document

Attn: Benjamin Sallemt Received: 10/9/02 8:00:00 AM ATC Associates Inc. ATC Group #: 8946 • 104 East 25th Street Analysis Date: 10/11/02 New York NY 10010 Fax: (212) 353-3599 Phone: (212) 353-8280 Project: DEP Clean-up ATC Project #: 22906-0002 I25 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) 0.5,0-5 5p (S/cc) (S/mm') (S/cc) Notes

A44 3500.00 0. 1236 23 CHRYSOTILE 0 3 0.0008 24.26 0.0025 Cellulose -8 Structures. Gypsum -15 8946 -44 Structures

A-45 3800.00 0.1236 29 CHRYSOTILE 2 I 0.0008 24.26 0.0025 Cellulose -1 Structures, Gypsum -2 8 8946 -4i Structures

A -46 3790.00 0.1236 41 CHRYSOTILE I 0 0.000S 8.09 0.000S Cellulose - 4 Structures. Gyosum .37 8946 -46 Structures

A-47 3300.00 0. 1236 33 CHRYSOTILE 0 2 0.0008 1613 0.0016 Cellulose • 2 Structures, Gypsum - 31 8946 -47 Structures

48 3800.00 0.1236 22 None Detected 0 0 0.0008 <8.09 <0.0008 Cellulose -3 Sbuctures, Gypsum • 19 946 -48 Structures

MARK PEYSAKHOV MICHAEL A. GORYCKI. Ph.D.

Analyzed

~isctaimer The !aboratory is not responsible for data reported in structuresicc. Nriuch is dependent on volume coil ed by non-laboratory personnel. This 'a is only responsib!e for data reooned in structures/mm' This report may not oe reproduced, except in fuil, without written aoproval 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 avaiiabie'upon reduest.

Accredited !or NVLAP PLMITEM #101187-0. NY State ELAP #10873

Friday. October 11, 2002 Page 6 of 6

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