Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

- TEM ANALYSIS ATC ASSOCIATES INC. 10/25/01 LAB GROUP #• 5761 - Operator Filter Type MCE 25 mm Lab Sample No. 62192 Filter Area 85 mm Disk No. Client Sp1. No. 19 Grid ID. Instrument I.D. EM 10 CRX Comments (GO) Area 0.01124 mm"2 to 70 s/mm"2.! Screen Magnification 16 400X 4 721 Struct Coranti No. GO to be Analyzed 6 80 kV Act. Voltage EDS Length I.D. of Structure N ar✓ (Nonasb. ture Type Len g GO. Structure Swe 5gum Am hibole Nonasb. Ambig./ND Elements No. 5um Chr s. No Coord. F B C M < um

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I J Check d E to or asbestos- ldentifr all etructurea udn BDS structures u l0 705 (lit 4) Photo No. (from 1 [o S To als 1 Grid acceptance: containing samples) <50% undissol r. ores app or o e <10% parUOulato coverage >50% coverage Struct. _ > 0.5um & > 5:1 Aspect Ratio overlapped g rid ■titres 4 diffraction pattar0) at leaf! 20 unfolded or N. <5% holes or o a ua areas Not Observed (BOS s pectrum or properties conforming Unused portion Positive di ffraction pattern criteria observed. of filter Chry3otile to laboratory identification Cur (020) rsMcuow. Per ebrytotilr. 0fur spacing • n~ 4 n5 Avoided portion tae isr llo thme 0.55em .poise [or rsn.cuoea. of railer or (110) and (1150) Fortson of sitar (2mm -idol Amphibole OAuem ties spots. fee tppra>. subject to

[ For emphibolo: Jul lies spot apad~ b esamieation of nedrFsaerrr la sralne spot dlsn lanes l(O.t49em} Ambiguous to laboratory / ■ppaaetrum conforming n17 AM ►te 208 .Warred. o Idea [icatloa criteria Non —asbestos single Fiber (1-3 intereectiooa P_ Ideti = 1-3 fibers) 25mm filler Crocidolite shot diameter apart) B= Bundle (>0 >S fibers <1 Rulan Anth op hyllite Intarescuone) Stopping C= Cluster _ Tremolite N on-Identified NYC-WTC 000104203