Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

~l TEM ANALYSIS ATC ASSOCIATES INC. - 110/25/01 'C'~ LAB GROUP t# 5762 Operator Filter Type ~' mm

Lab Sample No. 62223 Filter Area 385 ^2~ Disk No. GJ~~ U y( Client spi. No. 9 Grid I.D. Comments CRX ' Instrument I .D. EM l0 (GO) Area 0.011 d. to 70 s/mm'%. 16 g00X q 721 Struct. Cors Screen Magnification Analyzed 6 No. GO to be EDS Acc. Voltage 80 kV Nor ✓ (Nonasb. I.D. of Structure Length Structure Structure Type ND Elemen ts G0. 5 um p Chr s. Am p hibole Nonasb. Ambig. >. 5ufn No Coord. NO• F B C bI ~ 6 um

I I I t Li 1 1 1 fed soeetra

usin BDS Chectr .time.:..-.• --- ~~ (lot 4) Identif all structures structures u t° 70s Photo No. from L la S ssbastos- Grid acceptance: t r, overlapped or o e Totals containing sample') c507L undissolva coverage >50% Struc4 = > 0.5um k > 5:1 Aspect Ratio <10% particulate unfolded or overlappedOYgrid squares 'E` C Sum diffraction pattern) at least 20 areas B J'V' - opaque N. Not Observed (BDS spectrum or <S7L holes or conforming Unused portion pattern properties Chrysotile Pesltive diffraction criteria observed. of niter laboratory Identification g to lads rsnscll°na. Avoided Parties .1wecin For ahr)saUls•. 0i'r3aMMpr llos r(eP°°,4 etr sating of filter Fors .Pacing nneetion& portion of niter (Zoua side) Amphibole et (1t0) and (130) Layer tins npsa4 and aPtPro' sublect to O.r. eo For sUO o Otes: leinoad spat spacing esaMlnstiea Ile° ratio of soa- di■tasce lever ( •n.1aM). kFsr Ilne np.at Ambiguou s laboratory AMPHIBG S trure conforming to v' 6D6 • tri be. criteria observed. AmOslte Ids 3.5 J Non —asbestos IaterssatiOM 1-3 fibers) zea.m filter Crocidolite p= Single Fiber (1-0 fiber diameter apart) stnaatas soles• Anthophyllite B= Bundle S>3 fibers <1

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