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Asbestos fiber analysis report, 21 Ann Street roof, June 2002

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Laboratory report from ATC Associates documenting TEM asbestos fiber analysis for a roof cleanup project at 21 Ann Street dated June 30, 2002.

NYC-WTC_000116469–000116472

Folder label: “17 ANN STREET 1001261, 90/23 BN# 1001261

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NYC 9/11 Public Portal Document

ATC Associates 10010 [04 East 25 Street, New York, NY Phone: (212) 353-8280 FaX (212) 353-8306

Received: 6/29/02 5:0000 PM Aer: Mr. Fabio Pedorte ATC Group #: 8336 Wwren & Fames Engineers . P.C. Analysis Date: 7/1/02 228 E. 45th stxaet New York NY 10017 ez; (212) 922-0630 Phone: (212) 922-007.1 1079.01.02 Projcet: NYC-DIP W & P Pile #: 21 Ann Street, Roof Clestllag

Microscopy ('EM) Performed Asbestos Fiber Analysis by Transmission Electron (ARERA) by EPA 40 CF`R Part 763 Final Rule Aaatyetcat A,Sastos Caeeentratdole Area Noe& Asbestos # Struetutrs Sensitivity O.Sf-t sµ (S4a+m') (S/cc) Note Asb ?ypc(s) (S.kt) San~pto Volume Anajytad

3 ] 0,0042 59.31 0.0169 01 1350.00 0.0674 0 CHRYSGT%L1 J16 .1 C1iRYSOJ11LE 0 0.0042 29.66 0.0085 02 13S0.00 0.0674 0 2 4336 4 I t 0.0042 29.66 0.0055 03 1350.00 0.0674 o CHRYSOTILE 8336 -3

3 0.0042 0.0423 04 0 CHRYSOTit.E 7 Q > 1350.00 8316 -I

2 2 0.0042 59.31 0.0165 05 0.0674 0 CHRYS07ILE 1350.00 8336 -3 3 0.0042 8.9 0.0254 0.0674 0 CHRYSOTILE 3 04QC 1350.00 11336 -b

MICHAEL A. GORYCRI, Ph.D- ROMaN PEYSA ov — Approved by: A.tmlyzed by.

by nAn4abOra T1personnel. Ttis lab is only raponslble 0caimer. The taboteto y is not able ]or data npeod In rrxw akc. whirl+ is dePendam on volume c Iecfedas>;oeiaraa Inc Thb level may not be used to claim be reproduced. eiwept In tun, wtTrout written eppreval bj ABC for dean re or ed M1 svuc we mmj. This repott may not repooc notes only to the samples repot above, Gushy Con1r01 Oitt inn? 95% U.S. Gooemment i tt pmdud endorsement by NV1AP or any ana 3Qeney o1 the pmdsion) IS eveil~le upon request. confidence 1iIuand laboratory and snatysls ewnq and ELAP $10879 Awgdited for I4VLAP PLM lEI 4101167.3. NY State Page I oft

NYC-WTC 000116469

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NYC-WTC_000116469Source: NYC Law Department, mirrored locally

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