NYC-WTC_000209888

NYC 9/11 Public Portal Document

ATC ASSOCIATES INC. TEA! ANALYSIS Lab Sample Nc leer Tv-oe MC3 mm Operator. iLent 3pl. No. 04 .er Area ■i “ mm

Lnscrumenc EM IC CxL Grid 1.D Dijk Nc.

Screen Magnificacion -c,4C0X (GO; Area mm 'Zcmrner.ra

Acc. Voltage 30 kV No. GO cc oe .Analyzed 4 "21 Scr-c mm

Length I.D. of Structure EDS GO. structure Structure Type J (Nonasb. No Coord. No. F B c Im <°5 urn i ichrys.i Amphibole Nonasb. 'Ambig./NDj Elements) I I !

J

I I i i I I '

(LJ ______________ L_I I I I I Photo No. (from I in 5 asbestos- Identify all structures uaing EDS> Check diffraction for asbestos store all unrepeated spectra containing samples) Grid acceptance:! structures up to TOs/rfim (Ist 4) <50% undiasolved filter, overlapped or folcied Struck = > Q.Sum & > 5:1 Aspect Ratio <IOX particulate coverage >50X coverage Totals Ns Not Observed (EDS spectrum or diffraction pattern) at least 20 unfolded or overlapped grid squares Positive diffraction pattern properties conforming <SX holes or opaque areas_____________________________ F B C M Sum to laboratory Identification criteria observed. Por ehryootlle: O.TUnm spacing for (020) raflectlons, Q.SSnna spacing for ths layer Una repeat, streaking of (IIQ) and (130) reflections. Unused pardon or niter Avoided portion or niter Chrysotile T I For amphiboiea: O.d3nm layer line repeat, and approx. (2mm wide) 3.3 ratio of non-tvinnad layer Une spot spacing to lusjeet to Amphibole svaminatian layer line repeat distance (O.dOnm).

/= EOS spectrum conforming to laboratory Ambiguous Identification criteria observed. amphiboles F= Single Fiber (1-3 intersections = 1-3 fibers) Amosite B= Bundle (>3 fibers <t fiber diameter apart) gSmm filter Crocidolite [ Non-asbestosi C= Cluster (>3 intersections) M= Matrix - atoppini Rules: ' .Anthophyllite j t NSD= No Structure* Detected >50 i/G.O. or in 1st 4 G.O. Tremolite j ,, , , . , Actinolite ' Non-Identified L;\DATA\PWVATE\MIKEC\CA00'TEMa 9,-'22/98

CITY_21MC100_002849246

NYC-WTC_000209888