Asbestos fiber TEM analysis data sheet, Oct 2001

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP d1 5759

Lab Sample No. Fiicer TyK-e MCE 2 5 min i=iTL 3pl. Ko. Filter Area 38£ mm

Ins'rument I.D. DM 1i CRN Grid I.D. ink Disk No.

Screen Magnif icatzor. 16,4 00y (GO) Area 0.01X24 mm"2 Comments

Acc. Volcage e 0 K\' NO. GC CO be Analyzed 147 Struct:. Corspd. zc 70 s/mm"2

GO. Structure Structure Type Length I.D. of Structure EDS >0.5 urn (Nonasb. No Coord. No. F B C M < 5 um J. Sum Chrys, Amphibole Nonasb. Ambig./ND Elements) 7

7 II

_____ _______ ^_J_LJ___________ Phota No. (from 1 in 5 asbestos- Identify all etructures using EDS Chee c diffraction for asbestos Store all unrcpcated spectra I containing samples) Grid acceptance: I structures up to 708 (l«t 4) <S0X undiaaolveu filter, overlapped or /old'e3 Struct = > D.Sum 4 > 5;I Aspect Ratio <1QX particulate coverage >50% coverage Ns Not Observed (EOS spectrum ar diffraction pattern) at least 20 unfolded or overlapped grid squares Totals <5X holes or opaque areas Positive diffraction pattern properties conforminf F B C M > Sum ti> laboratory Identification criteria observed. •Unused portion Of (llUr For chrysotile: 0.73nm spscing for (080) reflections, O.Sdnm spacing for the layer line repeat, itreaklnc Chrysotile i of (110) and (130) reflections. -Avoided portion of filter For amphiboles: Q.53nm layer line repeat, and approx. Portion of filler (2mm wide) 3.S ratio of non-twtnn«d layer line spot apacing to aubJecL to examination Amphibole layer line repeat distance (O.S3nm).

EDS spectrum conforming to laboratory itlenurication criteria observed. AMPHIBOLES Ambiguous P= Single Fiber (1-3 intersections * 1-3 fibers) Amosite B- Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 intersections) ____________ 2Smm filtar f StoppInK Hulett I------------ Crocidolite Non-asbestos Ms biatrix Anthophyllite NSOs No Structures Detected >50 t/G.O. or in lit 4 C.O. Tremolite Actinolite Non-ldentified L-\DArA\PRIVATE\MlK8C\CADD'g'SM3 0/22/06

CONFIDENTIAL, CITY_21MC100_003470324 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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