NYC-WTC_000189348

NYC 9/11 Public Portal Document

Attn Mr Bernard Orlan Received 4/18/02 9 30 00 PM NYC Board of Education ATC Group # 7459 28 11 Queens Plaza North Analysis Date 4/18/02 Long Island City NY 11101 Fax (212)475 4122 Phone (212)477 8941 Project H S for Leadership & Public Service

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos # Struaures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) 05^5 5fi (S/cc) (S/mm>) (S/cc) Notes

11 1824 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 8

12 181600 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459" 9

13 181600 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 10

14 181600 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 II

15 1824 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 12

16 1824 00 0 0450 0 None Detected 0 0 0 0047 <22 24 < 0 0047 7459 /5

17 1824 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 14

18 1816 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 15

19 1816 00 0 0450 0 None Detected 0 0 0 0047 <22 24 <0 0047 7459 16

MARK PEYSAKHOV MICHAELA GORYCKI PhD

Analyzed by Approved by

Disclaimer The laboratory is not responsible for data reported in stnjctures7cc which is dependent on volume collected by non laboratory personnel This latrls 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 Qualify control data (including 95 / confidence limits and laboratory and analysis accuracy and precision) is available upon request

Accredited for NVLAP PLM/TEM #101187 0 NY State ELAP #10879

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CITY_21MC100_003086074

NYC-WTC_000189349