Asbestos fiber analysis results, Jan 2002

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone: (212) 353-82S0 Fax: (212)353-8306

Attn: Mr. Bernard Orlan Received: 1/20/02 4:00:00 AM N.Y.C. Board of Education 28-11 Queens Plaza North ATC Group#: 6386 Long Island City, NY 11101 Analysis Date: 1/20/02 Fax: (212)475-4122 Phone: (212) 477-8941 Project: PS 89M 201 Warren Street, New York, NY Playground, Roof 5th&2nd Floor, 1st Floor Hallwa

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 0.5/i-S 5fi (S/cc) (S/mm^) (S/cc) Notes 0! 1875.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 6386 -1

02 1S75.00 0.0450 0 NoneDetected 0 0 0.0046 <22.24 <0.0046 6386 -2

03 1875.00 C.0450 0 None Delected 0 0 0.0046 <22.24 <0.0046 6386 -3

04 1875.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 6386 -4

05 1875.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 6386 -5

06 1875.00 0.0450 0 NoneDetected 0 0 0.0046 <22.24 <0.0046 6386 -6

ROMAN 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 repotted in structures/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

CONFIDENTIAL, CITY_21MC1OO_OO34335O4 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175801