NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LftE GROUP #: L0/09/C 1 Lab SampLe No. £022^ r Type ^C5 25 nm Ooeracjr Glie.iL Spi. No. MBHS-B>6-10/9-10 Fiic-er Area 3 8S mm'2

Inscrumenc I.D. SM 10 CRX Disk No screen Magnification lo.iOOX (GQt Arsa 0.01124 mr/Z Comments ACC, VcCtage 8 0 kV Ko. GC tc be -Analysed Corsod. bo 70 .s/mm’^2

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

=2- 3 A

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photo No. (from 1 in 5 asbestas- dentify all atructurga ming BPS Check diffraction for asbestos Store all unrepeated spectra — conLalning samples) Grid acceptance;! istructures up to 70s/mn (let 4) <50% uadiasolved filter., overlapped or folded Struct. = > O.Sum A > 5:1 Aspect Ratio <10% particulate coverage >50X coverage Totals Ns Not Obaerved (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid aquarea PoaiLivo diffraction pattern properties canfornUng <5% hoiea or opaque areaa F B C M > Sum to laboratory Idantlficatlon criteria obaomd. -Unuaad porUon Par ehryaolils: O.TSnm spaeine for (020) raflaellena. of niter Chrysotile 0.&anm ipaeloi for Iha layer line repeat, atraaklna •Avoided portion «r (110) and (130) reflecUona. of niter Far amphllMtca: O.SSnm layer line repeat, and appres. (Zmm Vida) 3.5 ratio of non-tvinned layer line spot spaein* to Amphibole layer Une repeat distance (O.SSnin). EOS spectrum eonformtnc to laboratery Ambiguous identification criteria obaerved. AMPHIBOLES ?= Single Fiber {1-3 intersections = 1-3 fibers) Amoaite 9= Bundis (>3 fiban <1 flbor diameter apart) G= Gluater <>3 Interaactlona) 2Smm niter Crocidolite Non-aabeatos I______ I Stepping Rules: i--------- , Anthophyllite «= Matrix N3D= No Struclum Detacted >90 i/G.O. ar in lat 4 Q.O. Tremolite Non-Identified U\DATA\PflJVATE\MlKEC\CADD\rKMa 9/22/M Actinolite

CITY_21MC100_003274228

NYC-WTC_000202634