NYC-WTC_000191415

NYC 9/11 Public Portal Document

Attn: Mr. Bernard Orlan Received: 5/25/02 4:00:00 PM N.Y.C. Board of Education ATC Group#; 7868 28-11 Queens Plaza North Analysis Date: 5/25/02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212)477-8941 Project: New Stuyvesant 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) 0.5fi-5 Sfi (S/cc) (S/mm^) (S/cc) Notes

17 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7868 -17

18 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7S68 -18

..,....,1.9. ■■■' 1920:00 0.0450 . 0 None Detected 0 0 0.0045 <22,24 <0.0045 7S6S -19

■2® / 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 ■ 7868 -20

21 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7868 -21

ROMAN PEYSAKHOV MICHAEL A. GORYCKl, Ph.D.

Analyzed by: Approved by:

Disclaimer The laboratory is not responsible for data reported in structures/cc, which is dependent on volume collected by non-laboratory personnel. This Ms only responsible for data reported in structures/mmT This report may not be reproduced, except in full, without wntten 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 PLMHEM #101187-0, NY State ELAP #10879

Page 3 of 3

CITY_21MC100_003090688

NYC-WTC_000191417