NYC-WTC_000189260

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received; 3/24/02 4.-0O.O0 PM N.Y.C. Board of Education ATC Group#: 7191 28-11 Queens Plaza North Analysis Date; 3/24/02 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) 9

Analytical Asbestos Area Non Asbestos it Structures Sensitivity Concentration Sample Coltune Analyzed Ash Type(s) O.SfL-S 5ft (S/cc) (S/mm^) (S/cc) Notes

OS 1920.00 0,0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7191 -S

09 1920.00 0.0450 0 None Detected 0 0 G.004S <22.24 <0.0045 7191 -9

10 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7191 -10

11 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7191 -11

12 1920.00 0.0450 0 None Detected 0 0 . 0.0045 <22.24 <0.0045 7191 -12

13 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7191 -13

14 1920.00 0.0450 0 None Detected 0 0 . 0.0045 <22.24 <0.0045 7191 -14

1'5 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7191 -15

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: pproved by

Disclaimer: The laboratory is not responsible for data reported in structures,'cc. which is dependent on volume collected by non-iaboratory personnel. This laWonly responsible for data reported in structures/rnmT 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 (orNVLAP PLMrtEM #101187-0, NY State ELAP #10879

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NYC-WTC_000189261