NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS Lnb SampLs No. 60711 Filter T/pe MCE 23 mm OperoCcr Ue-p Ciienc Spl. Nc MB4£-E>6-20/9-lj Frl Area 3SS mm' Instrument I.D. EM 10 GRX Grid I.D. wu Disk Mo. Screen Maqr.ificatijn 1S,4OOX (GO) .^rea C . 01L24 rr.m'2 Comments Acc. Volcace 3 0 kV No. GO to be Analyzed _4 Corsori 3 / rrm' 2

Length I.D. of Structure EDS GO. structure Structure Type {Nonasb. No, Coord. No. >0.5 um F B C M < S um > Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)

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Check diffraction for asbestos Lore all unrepealed spectra I Photo No. (from 1 in 5 as leatos- Identify all structures using BPS1 containing samples) Grid acceptance: i structures up to TOe/An (let 4) <S0X undlseolved filter, overlapped or folded Struct, s > O.Sum Je > 5:1 Aspect Ratio <10% parUauJete ooverege >5DX eovcrags N= Not Observed (BOS spectrum sr diffraction pattern) at least 20 unfolded or overlapped |rid squares ToUla Positive diffraction pattern properties conforming <5X holes or opaque areas F B C M > Sum to laboratory Identification criteria observed. 'UnuMd portion Por ohryaeUlet O.TSnm •pacing for (020) raOaeliena. O.bSnm apaclog for tbs layer line repeat, strealtlng af niter Chrysotile 'Avoided portion of (110) and (100) reflecUona. or niter Per smpbibalest O.bOnm layer Une repeat, and apprea. (Emm wide) Xa ratio af non-twinned layer line spot apacln< to Amphibole layer Une repeat distance (0,03nm). i/= SDS spectrum conforming to laboratory identification criteria observed. AMPHIBOLES Ambiguous P= Single Fiber (1-3 Inteneetiona = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) 2&inin niter Crocidolite Non—asbestos C= Cluster (>□ InlersecUona) III Hui™ I------- 1 Ms Matris Anthophyllite MSD= No Structures Dstected U\DATA\P1UVATE\MIXKC\CADtr9*&ua [ >ao

9/22/SB «/C.O. or la lot 4 c.a. i -* Tremolite Actinolite Non-identified

CITY_21MC100_003274237

NYC-WTC_000202643