NYC-WTC_000215053

NYC 9/11 Public Portal Document

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

Attn: Mr. Bernard Orlan Received: 2/24/02 6:00:00 PM N.Y.C. Board of Education ATC Group#: 6819 28-11 Queens Plaza North Analysis Date: 2/24/02 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 Area Non Asbestos # Structures Sensitivity Concentration Sample f^ulume Analyzed Asb Type(s) 0.5p-5 Sp (S/cc) (S/mm^) (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6819 -I

02 1920.00 0.0450 0 . None Detected 0 0 0.0045 <22.24 <0.0045 6819-2

03 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6819-3

04 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6819-4

05 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6819-5

06 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6819-6

07 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6819 -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 sinictures/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 PLM/TEM #101187-0, NY State ELAP #10879

CITY_21MC100_002853863

NYC-WTC_000215053