NYC-WTC_000228714

NYC 9/11 Public Portal Document

ATC Associates 104 East 25 Street, New York, NY 10010 Phone; (212) 353^280 Fax:(212)353-8306

Attn: Mr. Bernard Orlan Received: 5/1/02 9:10:00 PM N.Y.C. Board of Education ATC Group#: 7602 28-11 Queens Plaza North Analysis Date: 5,1, 02 Long Island City, NY 11101 Fax: (212) 475-4122 Phone: (212) 477-8941 Project; H.S. Of Economics And Finance 100 Trinity Place, New York, NY

Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) Performed fay EPA 40 CFR Part 763 Final Rule (AHERA) Analytical Asbestos Area IVon Asbestos # Structures Sensitivity Concentration Sample Volume Analyzed Asb Type(s) (S/cc) (S/mm‘) (S/cc) Noles

03 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 < 0.0048 76Q2 -/

04 ! 800.00 0.0450 0 Nene Detected 0 0 0.0048 <22.24 <0.0048 7602 -2

05 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7602 -J

06 1816.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7602

07 1824.00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7602 -S

08 1832,00 0.0450 0 None Detected 0 0 0.0047 <22.24 <0.0047 7632 .6

09 1800.00 0.0450 0 None Detected 0 0 0.0048 <22.24 <0.0048 7602 -7

MICHAEL A. GORYCKI, Ph.D. ROMAN PEYSAKHOV _ Apnroved by: Ar

Disciamer; The latorarity is not fespoftsfbls far data resorted in stfuctures/cc, which is cfipendepr on voIuto coliected by non-lai>orat(5fy personnel. This lab ts resDQ.nsibie tor data rsported in structures/nm’. This recoil may not oe 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 o1 the U.S. Government. This reports relates only to the samples reported aoeve. Quality control data linduding 95% conlidence limits and laboratory and analysis' accuracy and precision) is available upon request.

AcereoitedfofNVtAP PLMfTEM #101107 0, State ELAP #10873

fage / uf 2

CITY_21MC100_002901560

NYC-WTC_000228714