NYC-WTC_000228974

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orian Received: 5/19/02 6:00:00 PM N. Y.C. Board of Education ATC Group#: 7797 2S-11 Queens Plaza North Analysis Date: 5/19/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project; H.S. Of Economics And Finance

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Area Non Asbestos U Structures Sensitivity Concentration Sample Volume Analyzeil Asb Typefs) 0.5p-5 Sp (S/ccj fS/mm^) fS/cc) Notes

08 1944.00 0.04 JO 0 None Deiected 0 0 0.0044 <22.24 <0.0044 7797 .S

09 1822.50 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7707 -9

Id 1936.00 0-0450 0 None Delected 0 0 0 0044 <22.24 <0.0044 7797 -10

li 0.0450 NoneOelected <0.0045 1920.00 0 0 0 0.0045 <22.24 7707 -yy

12 1896.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7797 -1:

S3 1936.00 0,0450 0 None Detected 0 0 0,0044 <22,24 <0.0044 7797 -,'S

14 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7?97 -14

15 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7797 -IS

16 1920.00 0.0450 0 None Delected 0 0 0.0045 <22.24 <0.0045 7797 -16

MICHAEL A. GORYCKI. Ph.D. MARKPEYSAKHOV Analyzed by; Approved by:

Disclaimer: The laboratory is not responsible for data reported in structuresicc, which js dependent on volume collected by non-iaboratory personnel. This tab is only responsible far data repotted in sdutatres/mn/ This repoii may not be reptoduced, except in full, withou! written approval by ATC Assooatea Inc This repwt may not be used to claim product enaorseriisnt by NVLAP or any other agency of the U.S. Government. This reports relates only to die samples reported above. Quality control data (including 35% confidence limits and laboratory and analysis' accuracy and precigion) is available upon request.

Accredited for NVlAP PLM/TEM «101187-O. NY State ELAP #108/9

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