NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEM ANALYSIS LAB GECUP 4 □

Lac oAinplA .Me. 12522 F-I MCx. 25 '•nm '-per

CLie’-TC SpL . No L5 3 ? S 'nm ' :

“rumenc Nc

Sore-in Magni f roar ion 15 4C0X Arsa •nrr Centmen icage ao kv Me T"

GO. Structure structure Type Length I.D. of Structure : EDS N or 1 (Nonasb. NoJ Coord. No. F B C M <°S urn* ' ichrys.i Amphibole ■Nonasb. lAmbig./NDI Elements) ( I

2?

I ! I i I J_____ !_____ J) Photo No. (from 1 in 5 asbestos- Identify all structures using EDS Check diffraction for aabestos Store all unrepeated spectra--' containing samples) Grid accepuince:l sLructurea up to 70a/i?im (l»t 4) <50% undjasolvea filler, overlapped or folded Struct- = > O.Sum Ac > 5:1 Aspect Ratio <10% particulate coverage >50% coverage Totals N= Not Observed (EOS apectrum or diffraction pattern) at leaat 20 unfolded or overlapped grid squares fjoiea or opaque areas Positive diffraction pattern properties conforming F B C M > Sum to laboratory identiflcaUon criteria abaerved.

1 -Unused porUon sr niter For chrysotile: 0.73nm apaeinc for (020) reneeUona, 0.53nm speetng for the layer line repeat, streaking Chrysotile -Avoided portion of (iiO) and (130) reflections. For amphiboles: 0.93nm layer line repeat, and approx. 3.5 ratio of non-* twinned layer Une spot spacing to layer line repeat distance (O.sanm). I Iaxaminstioa an V ' In of niter (2mm Wide) .4mphibole >/= EDS spectrum conforming to laboratory identification criteria observed. ; AMPHIBOLES ; Ambiguous j pa Single Fiber (1-3 intersections = 1-3 fibera) Amosite ! f Ba Bundle (>3 fibers <1 fiber diameter apart) C= Cluster (>□ intersections) „ . 25mm Httar ’ Crocidolite [ Non —asbestos I M= Matrix ----------- Stooping .'luieas -------- 1 Anthophyllite ! i- NSD= Mo SLrucluroi Odcclod -/“ d. or in l.t 4 0.0. TrsmoliLe i k, - > x • e- u I

L\0ATA\PRIVATE\MIKKC\CADD\TEM3 fl/22/98 Aclinolile : Non-Identified !

CITY_21MC100_002849258

NYC-WTC_000209900