Asbestos air analysis results, H.S., April 2002

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: 4/10/02 9:00:00 PM N.Y.C. Board of Education ATC Group 4: 7373 28-11 Queens Plaza North Analysis Date: 4/10/02 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 CER Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos # Structures Sensitivity Concentration Sample Volume Analyzeii Asb Type(s) 0.5ft-5 5fl (S/cc) (S/mm^) (S/cc) Notes

1 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0,0045 7J7J -I

2 1620.00 0.0562 0 None Detected 0 0 0.0042 <17.79 < 0.0042 -2

3 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 73 73 -3

4 1928.00 0.0450 0 None Detected 0 0 o'0044 <22.24 <0.0044 7323 -4

5 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7373 -J

(> 1936.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7373 -6

7 0 None Detected 0 0 0.0044 <22.24 <0.0044 1936.00 0.0450 7373 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed A^roved by:

Disclaimer; The laboratory is not responsible for data reported in structuresicc, 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 PLMAEM #101187-0. NY State ELAP #10879

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CONFIDENTIAL, CITY_21MC100_003459684 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179483