NYC-WTC_000208150

NYC 9/11 Public Portal Document

ATC Associates V 104 East 25 Street, New York, NY 10010 Phone; (212) 353-8280 Fax;(212)353-8306

Attn: Mr. Bernard Crlan Received: 5/17/02 9;00;00 PM N.Y.C. Board of Education ATC Group#: 7780 28-11 Queens Plaza North Analysis Date: 5/18/02 Long Island City, NY 11101

Fax: (212) 475-4122 Phone: (212)477-8941

Project: NYC-BOE PS 150M Project#: 14584-0824

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos .4 re a iNon Asbestos # Structures Sensitivity Concentration Sample t^ohtnie Analyzed Asb Typefs) O.Sp-5 Sfi (S/cc) (S/mm^) (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7780 -I

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7780 -7

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7780 -3

04 1920.00 0.045.0 0 None Detected 0 0 0.0045 <22.24 <0.0045 7780 -4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7780 -J

06 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7780 -6

07 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 77SG -7

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: pproved by

Disclaimer: The laboratoiy is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratoty personnel. Thislab is only responsible for data reported in structures/mnrT 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 PLMfTEM 4101187-0, NY State ELAP 410879

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NYC-WTC_000208150