NYC-WTC_000182516

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LA£ GROUP 5509 - I0/05?01 Lab Sample No. 60Q32 Filter Type MCE 25 mm Operacor Client Spl. No. SH5-l>lQ-10/5-25 Filter Area 3 85 nnn^2 Instrument I.D. EM 10 CR:< Grid I.D. . S / Disk No. Screen Magnification 16,40QX (GO) Arsa 0.01124 Commencs Acc. Voltace SO kV No. GO to be .^^naiyzed 4 ( 3.147 Scruct. Corsed. co 70 s/mm^2.)

GO. structure Slructurc Type Length I.D. of structure EDS n or >0.5 um (Nonasb. No Coord. No. F B C M Sum Chrys. Amphibole Nonasb. Ambig./ND Elements) < 5 um I z II 7 >1 w 6'^

Store all unrepeated spectra-^ Photo No. (from 1 in 5 as leatoa- Identify all atructurea using SDS Chee c diffraction for aebealos containing samples) Grid acceptance:!, structures up to 70a/^rn (lat 4) <S0X undiaaoivea fiRer, overlapped or folded Struct. = > O.Sum Jc > 5:1 Aspect Ratto <1OX particulate coverage >50X coverage Totals N= Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positivo diffraction pattern properties conforming <5X holes or opaque areas F B C M > Sum to laboratory identlficaUon criteria observed. 'Unused portion For chrysotile: O.TSnm spacing for (020). renecUcna. or niter Chrysotile Q.Panm spacing for Uie layer lino repaat, streaking -Avoided portion cf (lie) and (130) refleoUana. of niur For amphiboles: 0.S3nm layer line repeat, and approx. Portion of niter (2mm wide) 3.3 ratio of non-telnncd layer Une spot spacing to subject to ■xaniinaUon Amphibole layer line repeat distance (O.S3nm). x/s EOS spectrum conforming to laboratory Ambiguous idenUfication criteria abaex~*ed. AMPHIBOLES Single Fiber (1-3 intersections = 1-3 fibers) Amosite B= Bundle (>3 fibers <1 fiber diameter apart) 2Smm flltor Crocidolite Non—asbestos M= taSrt? ______ I supptn, «ul« I. Anthophyllite NSD= No SLruelure. DBlected | '*^ * Tremolite Actinolite Non-IdenLified k\DATA\PRlVATE\«IKXC\C*Dn\3^M3 a/22/M

CITY_21MC100_003099096

NYC-WTC_000182516