TEM analysis data sheet, sample 59653, September 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS n LAB GROUP #: 5575 - 09/28/01 Lab Sample No. 59653 Filter T^^/pe MCE 25 mm Operator Clienc Sol. No. TO6 Filter Area 385 mm"2 Instrument l.D. EM 10 CRX Grid l.D. Disk No/ Screen Magnification 16 , '40QX IGO) Area Q.01124 mm^2 Comments Ago. Voltage 80 kV Mo. GO to be Analyzed __6 ( 4.721 Struct. Gorspd. to 70

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

3”

X

n

L-J

Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for aabeatoa Store all unrepeated spectra containing samples) Grid acceptance:!, atructures up to 70«/As (l«l 4) <50% undissolved filter, overlapped or foldea Struct, s > O.Sum fc > 5:1 Aspect Ratio <10X particulate coverage >S0X coverage Totals Ns Not Observed (SDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conformlnc <S% holes or opaque areas F B C M > Sum to laboratory identification criteria observed. •Unused portion For chrysotile: Q.73nm spacine for (Q2Q) reflections. or fllUr Chrysotile a.03nin spacing for the layer line repeat. streaKlng -Avoided portion of (110) and (100) refleetiona. or niter Por amphiboles: O.SOnm layer Une repeat, and approx. Portion of niter) (2mni wide) 3.S ratio of non-tvinned layer Une spot spacing to subject la Amphibole layer line repeal distance (O.S3nm). examination /

\/s EDS spectrum conforming to laboratory Ambiguous identification criteria observed. AMPHIBOLES i F= Single Fiber (1-3 intersections - 1-3 fibers) Amosite 8= Bundle {>3 fibers <1 fiber diameter apart) 29mm filter Crocidolite Non—asbestos C= Cluster (>3 intersections) ------- ! Stoppin< Rules: I--------- - Anthophyllite M= Matrix r NSO- No Structures Detected >a0 a/G.O. or Ln 1st 4 0.0. Tremolite Actinolite Non-Identified U\0ATA\PR|VA’r^\MlKSC\CADDX?'BM3 0/22/90

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