TEM analysis results for bulk sample, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS •Lab Sample No. Client 3pl. No. g Xi57 -10/5-50 LABGROUPJjSJO^JZ-llLOSm Filcer Type MCE 25 mm Filter Area 335 mm*2 Jceracor kP Instrument I.D. EM if) C« Grid I.D. Disk No. Screen Maqnl f icat ion ;.5,400X (GO) Area 0.01124 mm' Comments Acc. Voltage No. GO to be .Analyzed _4 ( 3.147 Struct. Corsed ■ Zc 70 3/rrm'^2 . 5

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

A/gzXi Vi 3, Ka V-' 11

1

I___________ L_ Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for asbeatoa Store all unrepsaLed spectra — containing samplea) Grid acceptance:} structures ub Jto 70a/t?>n (i>t ♦) <60X undiaaotved filter, overlapped or- folded Struct = > a.aum i > 5:1 Aspect Ratio <10% particulate coverage >S0X coverage Totals N= Nat Observed (EDS apectrum or diffraction pattern) at least 20 unfolded ar overlapped grid squares <5% holes or ooaoue areas F B C M > Sum Pusitive diffraction pattern properties conforming to laboratory Identification criteria observed. Fer chrysoUIe: 0.73nm apauine for (020) rsfloetiona, O.ISnm apacinc for the layar line repeal, atrsaking •Unused portion af niUr Chrysotile V Pl ' -Aveidsd portion of (no) and (130) reflections. of fitter For amphiboles: O.aOnm layer tins repeat, and approx. PorUon at fIlUr [Zmn vids) 3.i raiis of nen-tvlnn«d layer line spot ipeeing to subjeet to —linsUon Amphibole la rar line repeat dietancs fO.Mnm). v/= EDS apectrum conforming to laboratory Ambiguous id'sntificatlon criteria observed. AMPHIBOLES P= Sinfie Fiber (1-3 Intersectians - 1-3 fibers) Amosite Qs ai.ndte f>3 fibers <l fiber diameter apart) C= CI Alter (>3 intsrsscUons) 2Smm nitar Crocidolite Non-asbestos Jstopptne Rules: L 1<= Matrix Anthophyllite h NSD= No Structures Detected fl/22/M [ >00 s/G.0. or tn lat 4 C.O. Tremolite Actinolite Non-ldentified i k\0ATA\PRlVATS\MlKBC\CAD0VSM3

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