NYC-WTC_000188617

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAE GROUP 7 09 21 / 01

Lab Sample No. 5 92? .ter Tyxs MCE 2: mm Cc-'I.-/- NSH5-L1MS-9/2 Filler Arsa 335 mm' Instrument I.D. EM cr:< Grib I.D. LLlhL Screen Magnification 16.400X (30) Arsa 3.02124 mm Lommer.cs Acc . Voiiiage ao kv No. GO to be Analysed _4 4 7 some Gorspd 70 s/mm*’2 . )

Length I.D. of Structure EDS GO.structure Structure Type (Nonasb. No. $5.0.5 um No. Coord. FIB C M < 5 um » Sum Chrys. Amphibole Nonasb. Ambig./ND Elements)'

7

Store ail unrepeated spectra I Photo No. (from 1 in 5 asbeatoa— Identify ail structures using EDS Check diffraction for asbestos containing aampiea) Grid acceotanced atructurea up to TOg/t^m (1 aL 4) <50% undisaoived filter, overlapped or folded Struct. = > 0.5um it > 5:1 Aspect Ratio <10X particulate coverage >50% coverage Totals Ns: Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <5S holes or opaaue areas y Q C M > Sum to laboratory Identification criteria observed. •Unuavd portion Fer ohrysaUle: Q.73nm ■peeing for (020) renecUoa*, Q.53nm spacing for the layer line repeat, streaking of fllLar Chrysotile •A»oidB<t portion of (110) and (130) reGccUont. of niter Per amphiboles: O.bbnm layer line repeat, and approx. Portion of niter (Smm wide) 3.5 ratla of non-tvinned layer Une spot spacing to subject to Amphibole layer Une repeat dletanee (Q.53nm). sxamiaation

EDS spectrum eonforming to laboratory idenUfJeaUon criteria observed. i AMPHIBOLES ! Ambiguous F= Single Fiber (1-3 InLersectlana » 1-3 fibers) Amosite B- Bundle (>3 fl ben <1 fiber diameter apart) 25mm niter Crocidolite Non—asbestos Si SlSff NSD= No SlrucUiro. DoUolod I[—'suM««< «»>« I—I ./G-O- °r I" Ht < S.°- | A.othophyllite Tremolite Non-ldentified I L;\DATA\?RrVATE\MIKSC\CADD\r5:M3 9/22/08 Actinolite

CITY_21MC100_003081954

NYC-WTC_000188617