NYC-WTC_000209771

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GROUP 5670 - 10/12/01 Lab Sample No 6Q954 Filter Type MCE 25 mm Operacor Clxenc Spl No L-4 Filter Area 38 5 mm'^2 Instrument I D EM 10 CRX Grid I D Disk No Screen Magnification 16,4QQX (GO) Area 0 01124 mm"2 Comments Acc Voltage 80 kV No GO to be Analyzed 4 ( 3 147 Struct Corspd to 70 s/mm~2 )

GO. structure structure Type Length I.D. of Structure EDS >0.5 um (Nonasb. No. Coord. No. F B C M Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) < 5 um / 2. 3 A

Store all unrepealed apectra-^ Photo No. (from 1 in S ai leatos- Identify al) atracturea uiing BPS Check I ___________ Ter______ dlffrecUon... aebeetoe oontalnlng lamplea) iCrid acceptance;l etructuree up to 70e/^m (let 4) <GOX undiaaoivcd niter, overlapped or folded Struct = > O.Sum A > S:1 Aapect Rato <10X particulate ooverage >50X coverage N- Not Obeerwed (KOS apMtrum or dinroetion patlom) at leant 20 unfolded or overlapped grid squnros Totals i/i PoaiUro dirfracUon paUam properUas confarminf <sx dee or opaque areas F B C M > Sum to laboratory IdanUfieatlon erltarla obaarrad. Ibum4 portion or nilor For cbryaoUle: O.nnm apaoina ior (OSO) ronMtlooa, Ojaom apaeint far tbo I^Aina repeat alnakiiK Chrysotile -Avoided portion ar (US) «■>. (ISO) reneoUeoe. of nilor For emphlbolaai OJSaaa layer line rapaoU and approe. PorUoB of nilor (Cmn Vido) 3.5 raUa of aoa-tolnaad lajer Hue apol apaclng la aubjocL to OKonlnolion Amphibole lapor Une repeat dletaaeo (fl.Mom). EDS apactrum conformias to laboratory idenUfloaUoa erltarla obaarrad. AMPHIBOLES Ambiguous Fo Slnfla Flbar (1-3 interaactiona o 1-3 flbeta) Amosite Ba Bundle (>3 fiber. <1 fiber dlemalar apart) C= Cluatar(>3 IntoraacUane) Mingi nilor [ Stopping Mulooj I--------- , Crocidolite Non-asbestos Ms Molrix r Anthophyllite NSOs No Slructurw Dotootod [ >M a/G.O. or In lot 4 G.O. Tremolite Non-Identified L:\OATA\PKVAT1\MI»C\CADDV1« 8/22/08 Actinolite

CITY_21MC100_002842236

NYC-WTC_000209773