NYC-WTC_000202627

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. TEM ANALYSIS LAE GROUP r 5550 - 10/09/01 Lao samp.'S No. 22222 Fi_ber Type MCE 25 mm uperacor rent Spl. No. M3HE-B>c-ij/g-is Filter Area 385 mm*2 lYu’ C(' Disk Ko Instrument i.D. EM 10 CRX Grid Z.D. Screen Macnif rcacicn l<i, ^QOX iGOi .Area ij. 01124 mm"2 Comments .Aco . Voltage 8 0 kV No to be Anai/ted 4 Corsod. to 70 5./mm'*2.)

Length I.D. of Structure EDS structure Structure Type: GO. (Nonasb. No. Coord. No. F B C M >0.5 um Sum Chrys Amphibole Nonasb. Ambig./ND Elements) < 5 um

S-

-J <5

^Phato No. (from I In 5 as testoa- dentlfy ail atructurea using BDS Chee..E diffraction ubeitoe for -— .............. ... 5 tore all unrepealed spectra — containing samples) Grid acceptance: l^^^_jh;uclure^jig_,lo 702Z«iJ <a0S undlaaolved niter, overlapped or folded Struct = > O.Sum k > 5:1 Aspect Ratio <10X particulate coverage >50% coverage Totals N= Mot Obaerved (BDS ipectruin or dlffracUon pattern) at leaat 80 unfolded or overlapped grid iquares pMiUvn dirfraetlon pattern propertiea ceafermlni <3% hoiea or opaque areaa F B C M > Sum to laboratory IdeoUflcaUon critorla obsorved. iiiw* portion Far chrywUlK 0.73am ■pacinc For (OSO) r«n«oUona, of niUr Chrysotile O.Mnm spaoinc for the layer line repeal, itreaklnc 'Avoldad portion of (110) and (ISO) reneeUena. of niter For amphibole*: O.dSom layer line repeat, and approx. PorUon of HI tor (Smm vtde) 3.3 ratio of non-tvinaed layer line apot tpaoxne to MibiKt to •samlnaUon Amphibole layer Une repeat distance (O.santni. SDS epeetrum oenferming to laboratory Ambiguoua Identirication criteria observed. AMPHIBOLES Pa Slnele Fiber (1-3 Intersectiona = 1-3 fibers) Amosite a= aundle (>3 fibers <1 fiber diameter apart) C= Cluster (>3 IntarsectloRa) ______ f __________ ^nm niter Crocidolite Non-aabeatos U= Matrix r Stepping Rulaa: - Anthophyllite NSDs Mo Struclurea Oateoted { >30 i/C.O. or in lot 4 C.Q. Tremolite Non-Identified Actinolite k\DATA\PRIVATS\MIKEC\CA00\reUS 9/22/90

CITY_21MC100_003274233

NYC-WTC_000202639