NYC-WTC_000228561

NYC 9/11 Public Portal Document

Attn: Mr, Bernard Orlan Received; 4 18'02 9 50:00 PM N.Y.C. Board of Education ATC Group ti: 7460 28-11 Queens Plaza North Analysis Date: 4,1S 02 Long Island City, NY 11101

Fax: (212)475-4122 Phone: (212)477-8941

Project: H.S. Of Economics And Finance

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area S/on Asbestos H Structures Sensitivity Concentration Sample l^olume Analyzed Asb Type(s) e.5n-5 Sa (S/cc) (S/mm-) (S/cc) lyates

10 1800.00 0,0450 0 None Detected 0 1.) 0.0048 <22.24 <0.0048 7460 -S

1I 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7460 -9

12 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7460 -10

13 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <1)0048 7460 -//

14 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7460 -12

15 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7460 -13

16 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7460 -14

17 1800.00 0.0450 0 None Detected 0 0 00048 <22.24 <0.0048 7460 -16

18 1872.00 0.0450 0 None Detected 0 0 0.0046 <22.24 <0.0046 7460 -16

MICH.AEL A. GORYCKI, Ph D MARK PEYSAKHOV Analyzed by: Approveti^y; ^<9/0

Disclaimer The laboratory is not responsible for data reported in structures/cc. which is dependent on volume collected by 'non-latxjratory personnel This lab is only respor sioie for data reported in structurea/mm' This report may not be reproduced, except in full, without written approval by ATC Associates Inc. This report may not be used to slain product encorsement 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 limils and laboratory and analysis' accuracy and precision) is available upon request.

Accredited w NVLAP PLM/TEM #101187-0. NY State FLAP #10879

Pape S: Ilf S

CITY_21MC100_002901001

NYC-WTC_000228562