Asbestos air analysis results, H.S., March 2002

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: 3/31/02 4:00:00 PM N.Y.C. Board of Education ATC Group#: 7280 28-11 Queens Plaza North Analysis Date: 3/31/02 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 Asbestos Area Non Asbestos # Structures Sensitivity Concentration Sample yotume Analyzed Asb Type(s) 0.5p-5 Sp (S/cc) (S/mm^) (S/cc) Notes

04 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7280 -I

05 1920 00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7280 -2

06 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7280 -3

07 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7280 -4

08 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7280 -5

09 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7280 -6

10 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7280 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Aoproved by:

Disdaimer. 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 stiuctures/mmi 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 predsion) is available upon request.

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

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