NYC-WTC_000223845

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: 5'12,02 4:00:00 PM N.Y.C. Board of Education ATC Group#: 7720 28-11 Queens Plaza North Analysis Date: 5 12 02 Long Island City, NY 11101 Fax: (212)475-4122 Phone: (212) 477-8941 Project: NYC-BOE PS 150M Project#: 14584-0824

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area Non Asbestos U Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) 0.5fi-S 5fi (S/cc) (S/mm‘) (S/cc) Notes

01 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7720 -/

02 1920.00 0.0450 0 None Detected 0 0 0.0045 <22.24 <0.0045 7720 -2

03 1920.00 0.0450 () None Detected 0 0 0.0045 <22.24 <0.0045 7720 -3

04 1920.00 0.0450 9 None Detected 0 0 0.0045 <22.24 <0.0045 7720 -J

05 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7720 -5

06 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7720 -6

07 1928.00 0.0450 0 None Detected 0 0 0.0044 <22.24 <0.0044 7720 -7

MARK PEYSAKHOV MICHAEL A GORYCKl, Ph D.

Analyzed by: Approved by:

Disclaimer The laboratory is not responsible tor data reported In structures/cc, which is dependent on volume collected by non-laboratory personnel. This lab ISonly responsible for data repotted in structures/mmT This report may not be reproduced, except in full, without written approval by ATC Associates Inc This report may not be used ;o claim product endorsement by NVLAP or any other agency of the U.S, Government. This reports relates only to the samples reported above. Quality conirol data (including S5% confidence limits and laboratory and analysis' accuracy and precision) is available upon request.

Accredited for NVLAP PLUTEM #101187-0, NY State ELAP #10879

I of I

CITY_21MC100_002920033

NYC-WTC_000223845