NYC-WTC_000214835

NYC 9/11 Public Portal Document

ATC Associates 7kI 104 East 25 Street, New York, NY 10010 Phone: (212) 353-8280 Fax: (212) 353-8306

Attn: Mr. Bernard Orlan Received: 6/21/02 ):00:00 PM N.Y.C. Board of Education ATC Group#: 8212 28-11 Queens Plaza North Analysis Date: 6/22/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 234M Project#: 14584-1823

Asbestos Fiber Analysis by Transmission Electron Microscopj ; I) Performed by EPA 40 CFR Part 763 Final Rule (AHER./ Analytical Asbestos Area /Son Asbestos # Structures Sensitivity . Concentration Sample Volume Analyzed Asb Type(s) O.Sfi-S 5fl (S/cc) (S/mm^) (S/cc)

01 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 S2I2 -I

02 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 8212 -2

03 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.00-14 82/2 -3

04 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.00-14 8212 -4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 82/2 -8

06 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 8212 -6

07 1936.00 0-0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 82/2 -7

MARK PEYSAKHOV Ml Ci \. GORYCKI, Ph.D.

Analyzed by:

Disclaimer. The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboi .onnel. This lab Wily responsible ' for data reported in structures/mm’. This report may not be reproduced, except in full, without written approval by ATC Associaies Inc Ort 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 abov- 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_000214835