NYC-WTC_000215836

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: 3/8/02 9:00:00 PM N.Y.C. Board of Education ATC Group#: 6991 28-11 Queens Plaza North Analysis Date: 3/9/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212) 477-8941 Project: New Stuyvesant H. S. , 345 Chambers St., 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 # Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) O.Sfi-S 5p (S/cc) (S/inm-) (S/cc) Notes

I 0.0450 0.0045 <22.24 . 1920.00 0 None Detected 0 0 <0.0045 6991 -1

2 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0 0045 6991 -2

3 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 . 6991 -3

4 192S.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6991 -4

5 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6991 -5

6 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6991 -6

7 1936.00 0.0450 0 None Delected 0 0 0.0044 <22.24 <0.0044 6991 -7

8 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6991 -8

MARK PEYSAKHOV MICHAEL A. CORYCKl, Ph.D.

Analyzed by: Approved by:

Disclaimer: The laboratory is not responsible for data reported in siructures/cc, which is dependent on volume collected b/non-laboratory personnel. This lab is only responsible for data reported in siructures/mmL This report may not be reproduced, except in lull, without writlen 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_002876089

NYC-WTC_000215836