NYC-WTC_000189323

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street New York NY 10010 Phone (212) 353-8280 Fax (212) 353 8306

Attn Mr Bernard Orlan Received 4/11/02 9 30 00 PM NYC Board of Education ATC Group # 7385 28 11 Queens Plaza North Analysis Date 4/11/02 Long Island City NY 11101 Fax (212)475 4122 Phone (212)477 8941

Project H S for Leadership & Public Service 90 Trinity Place NY NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos ft Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) 0 5ft S 5ft fS/cc) (S/mm) (S/cc) Notes

04 1824 00 0 0450 0 NoneDetected 0 0 0 0047 <22 24 <0 0047 7385 /

05 1832 00 0 0450 0 NoneDetected 0 0 0 0047 <22 24 <0 0047 7385 2

06 1824 00 0 0450 0 NoneDetected 0 0 0 0047 <22 24 <0 0047 758} 3

07 1824 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7385 4

08 181600 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7385 5

09 181600 0 04b0 0 None Detected 0 0 0 0047 <22 24 <0 0047 7385 6

10 181600 00450 0 NoneDetected 0 0 0 0047 <2224 <00047 7385 7

ROMAN PEYSAKHOV MICHAELA GORYCKI PhD

Analyzed by 8/ 1/ Approved^by MO/' Disclaimer The laboratory is not responsible tor data reported in structures/cc which is dependent on volume collected by non laboratory personnel This lab is only responsible for data reported in structures/mm This report may not be reproduced except in full without wntten 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 PLMZTEM #101187-0 NY State ELAP #10879

Pa^e I uj 3

CITY_21MC100_003085898

NYC-WTC_000189323