NYC-WTC_000218012

NYC 9/11 Public Portal Document

Attn: Mx. Bernard Orlan Received; 2/22/02 5;20:00 PM N.Y.C. Board of Education ATC Group#; 6787 28-11 Queens Plaza North Analysis Date: 2/23/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212) 477-8941 Project: NYC-BOE PS 234M Project#; 14584-1823 292 Greenwich St., New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos It Structures Sensitivity Concentration Sample f^olume Analyzed Asb Type(s) 0.5/t-5 5,1 (S/cc) (S/mm^) (S/cc) Notes

9 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 -9

10 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 -10

If 1920 00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 - 11

12 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 ■ 6787 -12

13 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 -13

14 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 -14

15 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6787 -15

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D

Analyzed by; iproved by:

Disclaimer The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab is only responsible lor data reported in struclures/mm’. 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 for NVLAP PLM/TEM #101187-0,' NY State ELAP #10879

CITY_21MC100_002878234

NYC-WTC_000218013