NYC-WTC_000213876

NYC 9/11 Public Portal Document

Attn: Mr, Bernard Orlan Received: 6/9/02 5:00:00 PM N.Y.C. Board of Education ATC Group#: 8024 28-11 Queens Plaza North Analysis Date: 6/9/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: H.S. Of Economics And Finance 100 Trinity Place, New York, 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 yolume Analyzed Asb Type(s) 0.5fi-5 5fl (S/cc) (S/mm’) (S/cc) Notes

10 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 < 0.0047 8024 -8

11 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 8024 -9

12 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 < 0.0047 8024 -10

13 1856.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8024 -1/

14 1896.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 8024 -12

15 1912.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 8024 -13

16 1848.00 0.0450 0 None Detected 0 0 0.0046 <22.24 < 0.0046 8024 -14

17 1848.00 0.0450 0 None Detected 0 0 0.0046 <22.24 < 0.0046 8024 -15

18 1856.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 8024 -16

MARKPEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: .pproved by:

Disclaimer The latxjratory is not responsible for data reported in struetures/cc, which is dependent on volume collected by non-laboratory personnel. This hSb only responsible ■ for data reported in slructures/mm^ This report may not be reproduced, except in full, without written approval by ATC Associates Inc. The 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 reported above. Quality control data (including 95% confidence limits and laboratory and analysis' accuracy and precision) is available upon request '

Accredited for NVLAP PLIWTEM #101187-0, NY State ELAP #10879

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