NYC-WTC_000189323

NYC 9/11 Public Portal Document

Attn Ml Bernard Orlan Received 4/11/02 9 30 00 PM NYC Board of Education ATC Group # 7385 28 11 Queens Plaza North Analysis Date 4/11/02 Long Island City NY 11101 Fax (212)475 4122 Phone (212) 477 8941 Project H S for Leadership & Public Service 90 Trinity Place NY NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos # Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) OSp 5 5/1 (S/cc) (S/mm) (S/cc) Noles

20 1816 00 00450 0 NoneDetected 0 0 0 0047 <22 24 <00047 1385 17

1816 00 0 0450 0 NoneDetected 0 0 0 0047 <22 24 <0 0047 73 85 18

ROMAN PEYSA: MICHAEL A GORYCKI Ph D

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Disclaimer The laboratory is not responsible for data reported in structures/cc which is dependent on volume collected by non laboratory personnel ThislSb is only responsible for data reported in structures/mm This report may not be reproduced except in full without wntten approval by ATC Associates Inc This report may not be used to claim product endorsement by N VLAP 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_000189325