NYC-WTC_000217909

NYC 9/11 Public Portal Document

Atlii: Ml. Bernard Orlan Received; 2.13 02 S; 10:00 PM N.Y.C, Board of Education 28-11 Queens Plaza North ATC Group #: 6671 Long Island City, NY 11101 Analysis Date: 2/14/02 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) Analytical Asbestos Area Non 'Asbestos Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) (S/cc) (S/mm’) (S/cc) /Votes 09 1928.00 0.0450 0 None Detected 0 0 0.0044 <22 24 <0 0044 6671 -9

10 1928.00 0.0450 0 None Deteaed 0 0 0.0044 <22.24 <0.0044 6671 -10

11 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6671 -I I

12 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6671 -12

13 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6671 -13

14 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6671 -14

15 1920.00 0.0450 0 None Delected 0 0 0.0045 <22.24 <0.0045 6671 -15

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by: Amroved by:

Disclaimer: The laboratory is not responsible tor data reported in structures/cc, which is dependent on volume collectetfby non-laboratory perso.nne; This iat is oniy 'esoonsioie Io.' 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 jsed to claim. product endorsement by NVLAP or any other agency of the U.S. Gcvernmenl This reports relates only to the samoles reported above. Quality control data iinciuding 55% confidence limits and laboratory and analysis' accuracy and precision) is available upon request.

Accredited tor NVLAP PLMfTEM #101187-0, NY State ELAP #10879

CITY_21MC100_002878053

NYC-WTC_000217910