NYC-WTC_000212793

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone; (212) 353-8280 Fax: (212)353-8306 ‘ 1 IC Attn: Mr. Bernard Orlan Received: 6/6/02 8:00:00 PM N.Y.C. Board of Education ATC Group#: 7989 28-11 Queens Plaza North Analysis Date: 611102 Long Island City, NY 11101 Fax; (212)475-4122 Phone: (212)477-8941

Project; NYC-BOE PS 234M Project#: 14584-1823

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos it Structures Sensitivity Concentration Sample Polume Analyzed Asb Type(s) 0.S/I-5 5fi (S/cc) (S/mm‘) fS/cc) Notes

01 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7989 -I

02 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7989 -2

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 79S9 -3

04 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 79S9 -4

05 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 79S9 -5

06 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 :’9S9 -6

07 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 < 0.0044 7989 -7

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: .pproved by:

Disclairner The laboratoiy is ioi responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This Wis only responsible for data reported in structurevminA 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 NVLtP 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 reguest

Accredited for NVLAP PLMTrEM #101187-0. NY State ELAP #10879

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NYC-WTC_000212793