NYC-WTC_000196985

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 3/7/02 8.-50:00 PM N. Y.C. Board of Education ATC Group#: 6977 28-11 Queens Plaza North Analysis Date: 3/7/02 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 Volume Analyzed Asb Type(s) O.Sfi-S 5ft (S/cc) (S/mm^) (S/cc) Notes

I1 1808.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -9

12 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 6977 -10

13 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -11

14 1840:00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -12

15 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -13

16 1832.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -14

17 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -15

18 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 6977 -16

19 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 6977 -17

MICHAEL A. GORYCKl, Ph.D. MARK PEYSAKHOV Analyzed by: Approved by:

Disclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-iaboratory personnel. This lao is only responsible for data reported in structures/nm* 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 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 Slate ELAP #10879

CITY_21MC100_003044335

NYC-WTC_000196986