TEM asbestos air analysis summary report, June 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: Mr. Fabio Pedone Received: 6/28/02 7:00:00 PM WaiTen & Panzer Engineers , P.C. ATC Group#: 8324 228 E. 45th Street Analysis Date: 6/29/02 New York NY 10017 Fax: (212) 922-0630 Phone: (212)922-0077

Project: NYC- DEP, W&P# 1079.01.02 104 Reade Street, Roof

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 l^olume Analyzed Asb Type(s) 0.5^l-5 5^t (S/cc) (S/mm^) (S/cc) Notes

01 1470.00 0.0562 0 None Detected 0 0 0.0047 <17.79 <0.0047 8324 -I

02 1470.00 0.0562 0 None Detected 0 0 0.0047 <17.79 <0.0047 8324 -2

03 1470.00 0.0562 0 None Detected 0 0 0.0047 <17.79 <0.0047 8324 -3

04 1470.00 0.0562 0 None Detected 0 0 0.0047 <17.79 <0.0047 8324 -4

05 1470.00 0.0562 0 None Detected 0 0 0.0047 <17.79 <0.0047 8324 -5

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: Anproved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. Ttiislatnsonly responsible for data reported in stnjctures/mm7 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 PLIWTEM #101187-0, NY State ELAP #10879

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CITY_21MC100_002964859

NYC-WTC_000186976