NYC-WTC_000215799

NYC 9/11 Public Portal Document

ATC Associates 104 Easi 25 Street. New York, NY 10010 Phone:(212)353-8280 Fax:(212)353-8306

Attn: Mr. Bernard Orlan Received: 3/1/02 9:00:00 PM N.Y.C. Brpard of Education ATC Group#: 6886 28-11 Queens Plaza North Analysis Date: 3/2/02 Long Island City, NY 11101 Fa.x: (212)475-4122 Phone: (212) 477-8941 Project: New Stuyvesant H. S. , 345 Chambers St., NY , N

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos fl Structures Sansitivily Coiicentration Sample I'olume Analyzed Ash Type(s) O.Sfi-S 5fl (S/cc) (S/iiim-) tS/cc) Notes

I 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6886 -1

2 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6886 -2

3 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 6886 -3

4 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6886 -4

5 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 - 6886 -5

6 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6886 -6

/ 1936.00 0.0450 0 ■ None Detected 0 0 0.0044 <22.24 <0.0044 6886 -7

8 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 6886 -8

MARK PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: Aoproved by;

Disclaimer: The laboratory is not responsible for data reported In srructu'eacc, which is dependent on volume collected by non-laboratory personnel. This lab is only responsible for data reported in structures/mmL 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 PLMfTEM #101187-0, NY State ELAP #10379

CITY_21MC1OO_OO2875886

NYC-WTC_000215799