NYC-WTC_000196767

NYC 9/11 Public Portal Document

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ATC Associates 104 East 25 Street, New York, NY 10010 Phone:(212) 353-8280 Fax:(212)353-8306 (WC Attn: Mr Bernard Orlan Received: 9/5/02 8 00:00 AM . • NYC Board of Education ATC Group #: 8809 28-11 Queens Plaza North Analysis Date: 9/5/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: NYC-BOE PS 42M Project# 14584-871 71 Hester Street, 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 5fl (S/cc) (S/mm’) (S/cc) '/9otes

01 1920 00 0 0450 0 None Delected 0 0 . 0 0045 <22 24 <0 0045 8S09 -I

02 1920 00 0 0450 0 None Detected 0 0 0 0045 <22 24 <0 0045 8S09 -2

03 1920 00 0 0450 0 None Detected 0 0 0.0045 <22 24 <0 0045 aso9 -s'

04 1920 00 0 0450 0 None Detected 0 0 0.0045 <22 24 <0.0045 8g09 .4

05 1928 00 0 0450 0 None Detected 0 0 0.0044 <22.24 <0 0044 8809 -5

06 1928 00 0 0450 0 None Detected 0 0 0 0044 <22 24 <0 0044 8809 -6

07 1920 00 0 0450 0 None Detected 0 0 0 0045 <22 24 <0 0045 88.09 -7

MARK PEYSAKHOV MICHAEL A GORYCKI, Ph D

• Analyzed by Approved by

Disclaimer 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 stnjctures/mm' 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 PLMZTEM #101187-0, NY Stale ELAP #10879

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NYC-WTC_000196767