NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS GECU? 5 2 € •' C : Lac Sample Nc. mm (J p e r a c - L- .. L - i. GlLsnc Spl. Nc. Fl r Area 39 5 Inscrumenc I.G. EMLOG^ Grid Disk Nc. Screen Magnxf icazio.n 400X 'GO! Area mm Commencs Acc. Voltage 8 0 kv No. GO co be .V.al> 4 Sin Sir sect s mrr'L

GO. Structure Slruclure Type! Length I.D. of Structure EDS >0.5 um ~ Z ~ ~~ 1 (Nonasb. No, Coord. No. f! Bic Im < 5 urn iChrys.! Amphibole Nonasb. lAmbig./ND! Elements) vy I J

J

I I rn R ! I I ; I H_______ _______ Photo No. (from 1 in 5 asbestoa- ____ Identify all atructurea using EDS Check diffraction for asbestos store all unrepeated spectra containing samples) Grid acceptance:! atructurea up to 70a/t^n (l«l 4) <S0X undiaaolved tiller, overlappedS^ lolded Struct = > 0.5um it > 5:1 Aspect Ratio <IOX particulate coverage >SOX coverage Totals Ns Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming to laboratory Identification criteria observed. <5X holes or ooaoue areas -Unused portion F B c M Sum Por ehrymtile: 0.73nm spacinc (020) ranecLiens. of niter 0.53nRi spacing far the layer line repsaU streaiting Chrysotile 'Avotded portion of (110) and (130) renecuona. . of niter For arapbiboies: a.53nm layer line repeat, and approx, j Pertien of filter (2mm wide) 3.5 ratio of non-t*lnned layer Une spot spacing to i suBiect La Amphibole layer Une repeat distance (O.SSnm). \ examination y

SOS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES J Ambiguous F= Single Fiber (1-3 InlersecUona = 1-3 fibers) Amosite j 9= Bundle >3 fibers <1 fiber diameter apart) 25mm filter Crocidolite ( Non-asbestos C- Cluster (>3 intersections) a , ' M= U.lrli ----------- .Sloppini Bule: -------- Anthophyllite i NSn= No Sliuclurc. Detected i ‘*4 < 0.0. Tremolite ,, . Actinolite i Non-Identified U\DAT*\PR1VATE\UIKBC\CAOD\TE1IO 0/22/38

CITY_21MC100_002849259

NYC-WTC_000209901