NYC-WTC_000197998

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: 5/6/02 8:00:00 PM N.Y.C. Board of Education ATCGroup#: 7653 28-11 Queens Plaza North Analysis Date: 5/6/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212)477-8941 Project: PS 89M 201 Wanen Street, New York, NY Playground, Roof All Floors Hallway

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos it Structures Sensitivity Concentration Sample Volume Analyzed Asb Typefs) O.S/i-5 S/t (S/cc) (S/mm^) (S/cc) Notes

01 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7655 -/

02 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7653 -2

03 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7653 -J

04 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7653 -4

05 1848.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 7653 -5

06 1864.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 7653 -6

07 1840.00 0 0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7653 -7

ROMAN PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by;

Disclaimer. The laboratory is not 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 stnictures/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 limits and laboratory and analysis' accuracy and precision) is available upon request

Accredited (or NVLAP PLM/TEM #101187-0, NY State ELAP #10879

Page I of 2

CITY_21MC100_0 03029566

NYC-WTC_000197998