TEM analysis data sheet for asbestos air sample

NYC 9/11 Public Portal Document

. ' ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP #: 57’58 -

Lab Sample No. oll4£ Filler Type MCE 25 mm Coeracor Clienc Spl. No. 1: FiiLei Area 285 mm Insb:.-ument I.D. ER IC. Cl Grid i.D. 4J’’ Disk No.

Screen Magnification i^400X (GO) Area C.01124 mm"2 Commencs Acc, Voltage 81 kV No. GO to oe .Analyzed _4 147 ScrucL. Corspd. 70 3.-mrr"2 )

Length I.D. of Structure ! EDS J ID, structure Structure Type ------------- i (Nonasb. No Coord. No. >0.5 um F B C M < 5 um Sum Chrys. Amphibole Nonasb. iAmbig./NDl Elements) A) Z- /■

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I I Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for asbestos Store all unrepealed spectra — containing samples) Grid acceptance;! structures un to 70a/i?im (lai 4) <S0X undiaaolveQ filter, overlapped or folded Struck s > 0.5um > &:1 Aspect Ratio <10X particulate coverage >50X coverage Totals N= Hot Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares <5% holes or opaque areas ? B C M > Sum Positive diffraction pattern properties conforming La laboratory Identification criteria observed. For chrysotile: 0.73nm spacing for (020) reflections, O.SSnm spacing for the layer line repeat streaking of (110) and (130) refiectiona. For amphiboles: 0.53nni layer line repeat, and approx. 0.5 ratio of non-twlnr.ed layer line spot spacing to PorUon of Nd' filler lubjecL La axamination I II \ ■Unuied portion of filter 'Avoided portion of niter ( (2mm wide) Chrysotile

Amphibole liyer Une repeat distance (0.&3nm). i/N EDS spectrum conforming to laboratory identification criteria obeerved. AMPHIBOLES Ambiguous F= Single Fiber (l"3 intersections » 1-3 fibers) Amosite a= Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections! 25mm filter Crocidolite Non-asbestos ------- 1 stopping Rules: I____ Anthophyllite Matrix T NSD= No Structures Detected I >S0 i/C.O. or in Ist 4 G.O. Tremolite Actinolite Non-Identified L:\D/TA\PRIVATE\MIKSC\CADD>5‘E«3 9/22/B8

CITY_21MC100_003107279

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