NYC-WTC_000221699

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone; (212) 353-8280 Fax: (212) 353-8306 TC Attn: Mr. Bernard Orlan Received: 4/13/02 5:30:00 PM N.Y.C. Board of Education ATC Group#: 7404 28-11 Queens Plaza North Analysis Date: 4/13/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212) 477-8941 Project: PS 89M 201 Warren Street, New York, NY Playground, Roof All Floors Hallway

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) 0.5m-S Sfi (S/cc) (S/mm^) (S/cc) Notes

01 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7404 -I

02 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 740^ -2

03 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7404 -2

04 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7404 -4

05 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7404 -5

06 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 74 04 -6

07 1840.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7404 .7

ROMAN PEYSAKHOV MICHAEL A. GORYCKI. Ph.D.

Analyzed by: .pproved by

Oisclaimer: The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. Trarab is only responsible for data reported in structures/mni’ 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 PLWTEM #101187-0, NY State ELAP #10879

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