NYC-WTC_000188427

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: 5/12/02 6:00:00 PM N.Y.C. Board of Education ATC Group#: 7722 28-11 Queens Plaza North Analysis Date: 5/12/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941

Project: H.S. for Leadership & Public Service

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Anaiyrticai Asbestos Area Non Asbestos # Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) O-Sfi-S (S/cc) (S/mm‘) (S/cc) Notes

01 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -I

02 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -2

03 1952.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -3

04 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -#

05 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -5

06 1944.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7722 -6

QI 2057.00 0.0450 0 None Detected 0 0 0.0042 <22.24 < 0.0042 7722 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: •oved by:

Oisctaimer The latxjratory is not responsible for data reported in structures/cc. which is dependent on volume by non-laboratory personnel. This laFs only responsible for data repotted in structures/mm’. 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 repotted above. Quality control data (including 95% confidence limils and laboratory and analysis' accuracy and precision) is available upon request

Accredited tor NVLAP PLMTEM #101187-0, NY State ELAP #10879

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NYC-WTC_000188427