NYC-WTC_000215129

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. Bernard Orlan Received: 3/27/02 8:10:00 PM N.y.C. Board of Education ATC Group#: 7231 28-11 Queens Plaza North Analysis Date: 3/27/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 150M Project#: 14584-0824 334 Greenwich St., New York, NY. 10013

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area /Von Asbestos H Structures Sensitivity Concentration Sample P'otiiine Analyzed Asb Type(s) 9.5/1-5 5/1 (S/cc) (S/mm^j (S/cc) /Voles

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7231 -I

02 1920.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 7231 -2

03 1920.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 723/ -3

04 1920.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 723/ -4

05 1920.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 7231 -5

06 1920.00 0.0450 0 NoneDetected 0 0 0.0045 <22.24 <0.0045 723/ -6

07 1928.00 0.0450 0 NoneDetected 0 0 0.0044 <22.24 <0.0044 723/ -7

ROMAN PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: >proved by:

Disclaimer; The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. Ttfe-tSb is only responsible for data reported in structures/mmL 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 PLM/TEM #101187-0, NY State ELAP #10879

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CITY_21MC100_002854164

NYC-WTC_000215129