NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. TEM ANALYSIS DABGR9UP#5650_iC£2^^ Lab Sample No. 60709 Filter Tvpe MCD 15 m Client Spi. Nc. MBKS-3>6-lOz' 2,85 71" ' L

InsuX'unenc I.D. DM IC CRX Grid I.D. *-! V d Disk No aoreen Maqni£icdL-on 16.400X (GO) Area 0 . 01124 mm' Comments Voltage 3 0 kV No. GO to be Analysed ( 3 GovsDd IO 70 s/mm*2.i

GO. Structure Structure Type Length I.D. of Structure EDS >0.S um (Nonasb. No. Coord. No. F B C M Sum Chrya. Amphibole Nonasb. Ambig./ND Elements) < 5 um

Lore ail unrepeated spectra—^ Photo No. (from 1 in S Bebeatoi- Identify all atmeturea ueing BPS Check diffraction for asbeelos containing aamplea) 1Crid acceptance; I atructurea up to 7p>/mii (Ht ♦) <S0X undiaaoived filter, overlapped or raided StrucL 3 > O.Sum J£ > 5:1 Aspect Ratto <10% particulate ceveraie >fiO3C coveraje Totals Ns Not Obaerved (EDS epeetrum or diffraction pattern) at least 20 unfolded or overlapped grid iquarea Poaitiva diffraction pattern preperttea eonformlng <5X hole* or opaque treat F B C M > Sum to laboratory idantlficatlon ertUrin obaerved. -UauMd portion Tor ahryaotlle: O.Tanm vpacing for (020) reflacUona, O.b3Bm apaeiag for the layer'ina resaat, abreaklng ar niter Chrysotile or (110) and (ISO) ronaoUam. -Avoided porUon or niter Tor •mphibolea: O.SSnm layor Una rapoat, and approx. ParUon ar mtar {2mm videi 3.5 ratio of non-lw(nnad layer line ipot ipacing to ■utjact la ■BBminaUan Amphibole layer line rapaat diaUaca (OJUnm). BPS ipectruin conforming to laboratory Ambiguous Idantlficatlon criteria obaerved. AMPHIBOLES P= Single Tiber (1-3 Intenectiona a 1-3 flberal Amoaite 3= Bundle f>3 fibera <1 fiber diameter apart) amm niUr Crocidolite Non-asbestos Cs Cluater {>3 interoeeUona) Ue UaUlx ,--------- 1 supping Ruian I--------- - Anthophyllite NSDs No Slruetursa OaLaetad >60 i/G.O. ar in tat 4 G.Q. Tremolite Actinolite Non-Idenlified L\DATA\PBlVATE\llll!ZG\C*DD'rEMa 9/22/90

CITY_21MC100_003274235

NYC-WTC_000202641