TEM air analysis results, Oct 9 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROgp 8: 564° - lU/09/01 Lab Sample No. £06^ Filter Type MCE 25 mm Opera cor Client Spl. No. HSHS-EIR-lQ/9-06 Filter Area 385 mm^2 Inscrumenc I.D. EM 10 CRX Grid I.D. Disk No. Screen Magnification 16,400X (GO) Area 0.01124 mnri Comments Acc. Volcage 80 kv No. GO to be Analyzed _4 ( 3.147 Scrucc. Corspd. to 70 s/mni^2. }

GO. structure Structure Type Length I.D. of Structure n or EDS . (Nonasb. No, Coord. No. F B C M >0.5 um Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) < 5 um-

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Store all unrepcated spectra-^ Photo No. (from 1 in 5 aabeatoa— Identify all atructurea uaing EDS Check diffraction for aabeatoa containing samples) Grid acceptance:! atfueturea up to 70«/Atn (l-l 4) <50X undiasolvea hiler. overlapped or loldea StrucL = > O.Sum A > 5:1 Aspect Ratio <10X particulate coverage >S0X coverage Totals N= Not Observed (EOS spectrum or diffraction pattern) at leaat 20 unfolded or overlapped grid aquarea Positive diffraction pattern properties conforming <SX holes or opaque areae F B C M > Sum to laboratory identification criteria obaerved. -Unused portion For ehrysoLlle: 0.73nm spaelns for (020) renecUons, Q.aOnm spacing for the layer line repeat, streaking of niter Chrysotile of (110) and (130) renecUons. -Avoided portion / Portion of niLer\ U of niter ( For amphiboles: 0.53nm layer Une repeat, and approx. (Smm wide) 3.S ratio of non-twlnned layer tioe spot spacing to subject to ' Amphibole layer line repeat distance {0.63nm). I examination I n v/= EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES P= single Fiber (1-3 InLereectioni s 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) 23tnm filler Crocidolite Non-asbestos

□ C= Cluster p3 interaections) Jstopplm Rules: M= Matrix Anthophyllite NSD= No Structures Detected [ >90 i/C.O. or in lot 4 C.O. Tremolite Actinolite Non-Identified U\ DATA\ PRIVATE\ MI XBC\ CADDVEM3 8/Z2/Ba

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