Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

, - TEM ANALYSIS ATC ASSOCIATES INC. 5762 - 10/25/0'- LAH GROUP # Operator mm Filter Type MCE 25 Lab Sample No. 62229 Filter Area ~ 38 Disk No. Client Sp . No. 15 Grid I.D. Comments

I ~1 0 CRX Instrument I.D. EM Screen Magnification 16 400X

Acc. Voltage eo kv (GO) Area _ ~4 _1'' ~m 0.0'

No. Go to be Analy2ed 2 6

I.D. of Structure Nor 4 721 Struct EDS (Nonasb. Corspd to 70 s/mm~2•

Length structure Tree Nonasb. Ambig./ ND Elements GO. Structure ,>Q,S um > 5um Chr s. Amphibole No Coord. No. F B C M < 5um

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El I I I I

I I I I tad spectra I EDS Check d►rrraeuou 70e (tat 4) structures unit, to X- ldent►ty all structures u in 5 asbestos- `Photo No. (from 1samples) Grid accepCanes: r, over apps or o a <50% undieaolve coverage >50% coverage Tom 1 containing 5:1 Aspect Ratio <10% particulate grid squa1•es Slruet = > 0.5um k > taut 20 unfolded or overlapped spectrum or diffraction pattern) at holes or o a tie arear (SW <S% N= Not Observed rues co ved, ng 0aussd portion Chrysotile diffractionpattern pr tar of IIWr J o totpositive laboratory identification af'ter's s da[ for (020) observed. rsn.CUoes. avoided portion 0.70am streaking Por ehr mode for tits layer line repeat. er niter Amphibole I 0or a btbal g nrlsatinoe. Portion at niter (2mm eida) of (110) and (WO) and approx. aubi■ct m 0.09am Carer line rspe spacing in a6 ssaminauoa or amphibole: aoa-twinned Igor ling spot 3.5 nUa of dlslaan ( 53nm). Ambigu011~ layer ilea rspest AMPH S to taboraWr7 / s EDS spe~wm conformieg obser"d• Amoslte idenUftosUon crlteris pt,—asbestol V Crocidolite N (l-0 inlerser as n 1-3 fibers) 26mm filter F Single Fiber fibers <1 fiber diameter apart) Anthophyllite ftvndle (~S

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