NYC-WTC_000229282

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: 6/14/02 9:00:00 PM N.Y.C, Board of Education ATCGroup#; 8108 28-11 Queens Plaza North Analysis Date: 6/15/02 Long Island City, NY 15101 Fax: (212)475-4122 Phone; (212)477-8941 Project: H.S. Of Economics And Finance

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed by EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Acea Non Asbestos If Structures Sensitivity Concentration Sample I'tilume Analyzed Asb Type(s) S.Sfi-S 5p (S/ccJ (SAnm^) (S/ccj Notes

03 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 8108 -I

04 1800.00 0.0450 0 Nona Detected 0 0 0.0048 <22.24 <0.0048 SIOS -!

05 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 SI OS -3

06 1816.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0,0047 SIOS

07 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 SIOS -3

08 1832.00 0.0450 0 None Detected 0 0 0.0047 < 22.24 <0.0047 SIOS -6

09 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 -7

MARK PEYSAKHOV MICHAEL A. GORYCKI, Ph.D.

Analyzed Approved by:

Disclaimer. Tfte laboratory is not responsible for data reported trs structuresfa, which is dependent on volume collected Uy nori-iat»ratory personnel. This lalhfon^ responsible for data repotted in stnictures/mnY. This report may not he reptoduoed, except in (alt. without written approval by ATC Associates tnc. This report may rtot be used to daim produci endorsement by NVLAP or any other agency of the U.S Government. This reports relates only to the samples reported above. QuaSty condo! data (including 95% conitdence limits and (aboratory and analysis’ accuracy and precision) is available upon request

Accredited (orNVLAP PtWTEM #101187-0, NY State SLAP #10679

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