NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC, TEM ANALYSIS LAB GROUP tf: 5650 - 1Q/09./01 Gab Sample No 80698 FiiLir T>-pe YC2 5 Tiin Ooeracor Cl Lent 3pl .'ic . MBHS-3>6 • 10.^9-06 Filter Arsa 385 min-p Instrument I.D. SY 1C Grid I.D. Disk No. ■Screcit Macnificacion 4,0 OX ■GO) Area 0 . 'J 112 4 miTi Coiniii: Acc. Vcit-jfe 8 0 kV Nc GO tc ce .Analy: 4 4~ Struct. Cocspd. -c ~C

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

E Photo No. (from I in 5 aabe.toi- lore ail unrepealed spectra—^ Identify all atructurea ueing BPS Chee c diffraction for asbestos containing asmples) Grid acceptance: I ^^^,^,atruclure^ug,^to7QB/mm (li l»l ♦) <S<n6 uadlsBolred filter. overTap^d or foitied Struct. = > O.Sum & > 5:1 Aspect Ratio <10% particulate coverage >50X coverage Ns Not Observed (BOS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid aquares Totals. Positive diffraction oatlam properties conferming <SX holes or onaoue areas F B C M >> Sum in laboratory idsnUfleatlon criteria observed. ----------- portion Por shryaotiiet a.73nm iMctng for (020) raflscliona. of niur Chrysotile 0.aaiuB apaetng far tbs layer lint rtpeaU streakibg -troidod portion of (110) and (130) reneeliona. of niUr Por amphllMiea: O.sanm layer line repeat, and approx. ParUofi at niter (Smm wldo) la ratio of non-t*tnned layer tine spot spaoing to aulijMi t» Amphibole layer line repeat distance (O.Sanm). axaminaUon

\/= EDS spectrum conforming to laboratory Ambiguous Identification criteria obaerved. AMPHIBOLES P- Sinfia Fiber (1-3 intersections = 1-3 fibers) Amosite 0= Bundle (>3 fibers <1 fiber diameter apart) 2Scnm niter Crocidolite Non—asbestos C= CIuaUr(>3 inierMcUona) ,--------- IsUppini Itules: 1--------- - Vs Matrix Anthophyllite NSD= No SLruoturea DsUeted >00 s/C.O. or la let 4 3.0. Tremolite Actinolite iVon—Identified U\JJATA\PfilVATK\a>XSC\CADDXraM3 8/22/00

CITY_21MC100_003274224

NYC-WTC_000202630