NYC-WTC_000216423

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: 2/19/02 6:00:00 PM N.y.C. Board of Education ATC Group#: 6750 . 28-11 Queens Plaza North Analysis Date: 2/22/02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212)477-8941 Project: New Stuy.vesant H. S., 345 Chambers St., NY , NY Exterior and Interior of Building and Roof

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) 0,5p.5 5p (S/cc) (S/mm^) (S/cc) ' Noles

I 1920.00 0.0450 0 .NoneDetected 0 0 0.004'5 <22.24 <0.0045 6750-1

2 8920.0 0.0450 0 NoneDetected 0 0 0.0005 s22.24 <0.0005 6750 -2

3 1928.00 0.0450 0 NoneDetected 0 0 0.0044 <22.24 <0.0044 6750 -3

4 1936.00 0.0450 0 NoneDetected 0 O' 0.0044 <22.24 <0.0044 6750 -4

5 1936.00 0.0450 0 NoneDetected 0 0 0.0044 <22.24 <0.0044 6750 -5

6 1936.00' 0.0450 0 NoneDetected 0 . 0 0.0044 <22.24 <0.0044 6750 -6

7 1936.00 0.0450 0 NoneDetected 0 0 0.0044 <22.24 <0.0044 6750 -7

8 1944.00 0.0450 0 NoneDetected 0 0 0.0044 <22.24 <0.0044 6750 -8.

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed by:

Disclaimer. The laboratory is not responsible for data reported in sfructures/cc, which is dependent on volume collected by non-laboratory personnel. Thi/teOis only responsible for data reported in stnjctures/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 PLMrtEM #101187-0, NY State ELAP #10879

CITY_21MC1OO_OO2876982

NYC-WTC_000216423