Ambient air sampling report for 105 Duane Street, Feb 2002

NYC 9/11 Public Portal Document

I,. . . - TEM ANALYSIS ATC ASSOCIATES INC. ^~ r nn CROUP b 5762 - 10 25 0'_ Operator vvv Filter Type MCE 25 mm No. 62245 Cab Filter Area= Disk No. Client Splpl. No. 31 Grid Z.D. CRX Comments ' Instrument I.D. EM 10 (GO) Area 0.011_ to 7C simm Screen Magnification 16 400X 4.721 Struct. Cors d. No. GO to be Analyzed 6 Acc. voltage Bo kV EDS I.D. of Structure Nor ,/ (Nonasb. stru°t°'° Trve Length Elements GO. Structure >0 5 Nonasb. Ambig./ND um g Chr s. Amphibole >. 5um No Coord. NO• F B C M < 5 um

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I I 1 L IdanUly all atructuron ualn SOS saber s Check d(ticaction for ittm (lst 4) up to 700 asbaatos- acceptance: structures `Photo No. (from 1 iO S containing samples) Grid <50X undissolve coverage r, over apps or b ide TOt S Aspect Ratio particulate >50% coveragesquares 5:1 <10% Struct = > O.Sum & > grid areas o e tie or N. Not Observed (205 Spectrum or diffraction pattern) at<57C holes least 20 or unfolded overlapped properU@s conforming Us i portion Positive diff raction pattern criteria observed. of niter Chrysotile to laboratory IdenUficatlon on. ■pacing for (020) reflecti For ahrysOUlr. 0.79am layer line repeat. streaking Avoided portion 0.09am Spacing for rsneauenS. the of niter Portlaa at niter (2mm wide) Amphibole of (110) and (190) ab)eet to For amphibclea: 0A9nm layer layyeer tins repa■t, line and m Spot Spacing Spprea. eam ination 9.9 nUo of non-twinned layer lies repeat distance (O.59nm). Ambiguous wm conforming to laboratory AMPHIBOLES /= SDs s Antoelte i SU s batten criteria observed. single Fiber bers (1-3 <1 intersections = 1-9 fibere)~ 29mm filar1 Crocidolite Nan — asbestos fiber diameter apart) Anthophyllite 8= Bundle (>9 fi s ~ ppin C' .t.r >3 intersections)

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