Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

1 .. ASSOCIATES INC. — TEM ANALYSIS ATC n

LAB GROUP # S'62 - 10/25 01 Qf Operator Filter MC ° 52 Type ~ m"t "lm Lab Sample No. 62241 Filter Area ;8 Disk nt Client ND. 27 Grid I.D . Comments Instrument I .D. EM 10 CRX (GO) Area 0.0=1 m to 70 s/mm 2 4 721 Stru"' zspd Screen Magnification 16 400X Analyzed ti No. GO to be AcC. Voltage 80 kV EDS N °r ✓ I.D. of Structure (Nonasb. Tie Len g th G0. Structure 341e~"r° 30.5 um 5um Chr s. Amphibole Nonasb. Ambig./ND Elements No Coord. No. F B C M < 5um

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spectra asbaetoa Storo atl unropeated structuros usln EDS Check diffraction for (let 4) Fttm Identity all structures uo to 90s in 5 asbestos- Photo No. (from I samples) Gri a vice: t r, overlapped or o a Totals cantainin[ <50% =undiaaoive coverage >50% coveragesquares 5:1 Aspect Ratio <10% particulate grid C lyI > 5um Slruct = s 0.5um & > 20 unfolded or overlapp F B apac"no or diffraction pattern) at least holes or opaque area, N= Not Observed (EDS properties Conforming <5% Unused portion diffraction pattern criteria Chrysotile La laboratory identlflcaUon to ■paeiag for observed. (020) ren.oLLoa, For Cm -Lit- 0for the lyer floe repeat. aleaakfnt apldd of ttttar

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0.09nm spaelog for tefecuons. portion of riltar of ru Bide) Amphibole (110) and (130) positive

1 of and approa aumlCtLO am For ampbiboln: vin Layer line layer •Pec1ni to nation 3.5 nUo of non ~u^d 0 09nm). layerIt,,.repeat A Ambiguous AMPHIBOLES EDS spectrum conforming to laboratory ideatific*U00 criteria observed. AmosiCC Non —asbestos intenccti°na = 1-3 fibers) 25mm niter CroCid011te F= Single Fiber (1-3 <1 fiber diameter apart) Anthophyllite 0= Bundle (>7 Ethan tntenectifN) gmpPinr Ralas• ,. ., •rremolite ,•,,.,_t,tPntified r= rlu+ter(» NYC-WTC 000104118