NYC-WTC_000208131

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: 5/4/02 4:35:00 PM N. Y.C. Board of Education ATC Group#: 7633 28-11 Queens Plaza North Analysis Date: 5/4/02 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 # Structures Sensitivity Concentration Sample Coliime Analyzed Asb Type(s) 0.5ft-5 5fl (S/cc) (S/mm>) (S/cc) /Votes

01 1920.00 0.0450 0 None Defected 0 0 0.0045 <22.24 <0.0045 7633 -I

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7633 -7

03 1920.00 0,0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7633 -3

04 1920.00 0,0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7633 -4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7633 -5

06 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7613 -6

07 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 7633 -7

ROMAN PEYSAKHOV MICHAEL A. GORYCKI, Ph.D,

Analyzed by: Improved by

Disclaimer: The laboratory is net responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab is only responsible for data reported in structures/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 NVLAF 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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NYC-WTC_000208131