NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. TEM ANALYSIS LAS GROUP #: 5650 .C/C9./O1 Lab Sample No. 6Q7C1 Filter Tyx- MCE mni

Client Go-. Ko. MBHS-B>6-10/9-OS Filter .Area 3 35 rim"2 Instrument I.D. EM 13 CRX Grid I.D Dl3k Me. Screen Magnification 16,400?: (GO) Area 0.01124 mm Cc(TiiTie;TC-3 Acc. Volcage 3 0 kY No. GO CO .i.naiyxed 4 2.147 Struct. Cerspd. to 70 3/mm"2.t

GO. 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

g|

A

Photo No. (from 1 in S asbeatoa- Identify all atructures using BPS Check diffraction for iasbestos tore all unrepeated spectra conUininf aampies) ICrid aceentaiice: l structures up to ^Oe/i tl«t 4) <S0% uncUssolved filter, overlapped or folded Struct. 3 > O.Sum Ik > 5:1 Aspect Ratio <10X particulate coverace >60X coverace Totals No Mot Observed (EDS spectrum ar diffraction pattern) laaat 20 unfolded or o« PPed (rid «quaraa PoslUvo diffrseUon pattam properties canforminc F B C M > Sum to laboratory idanUrieatloa criteria observed. ■Unueed pertion For chrysotiles O.Tanm apaeinc for (020) reflaeUona. O.aanm apaclOf for tbs layer lias rspsat, strsalctac of (110) and (130) rsflsoUons. ar rillar •Avoided portion or filter Chrysotile 111 For emphiboiss: 0.33nm Isysr lias repest and approx. PerUon sf niter (2mm eldo) 13 raUo of non-tvtnnsd Uyer line spot speclne tn sub)sai to Amphibole Isjsr Una rspsat dtsiancs (0U»nm). •xamioaUan

EOS apectruRi conforming to laboratory Ambiguous idantlfteatlan criteria abservsd. AMPHIBOLES F= Slncle Fiber (1-3 inteneetions 3 1-3 fibers) Amoaite H= Bundle (>3 fibers <1 fiber diameUr apart) C= Cluster (>□ Intersections) ZSmm niUr Crocidolite Non—asbestos Rulas: I______ _ Anthophyllite Ms Matrix NSDs No Strueturei Oetnetad U\DATA\?]UYATS\MIXCC\CA0(h7EM3 [ >a0 j/G.a. or in l«t 4 0.0.

0/22/88 Tremolite Actinolite Non-Identified

CITY_21MC100_003274227

NYC-WTC_000202633