NYC-WTC_000202346

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1920 Lab Group #: 9214 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 GridOneningSi^ 0.01124

Client Sample #: 05 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: 17.^ <F=' Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure yj or EDS (Nonadb No F B C M >=05 p Chrys Amphibole Norasb Ambig/ND No Coord <5p Elements)

J

1 r

I : I I I A Photo No, (from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0,5(1 > 5;1 Aspect Ratio <50% uncissolved Slier, ovedapped or folded Totals 'j= Positive diffraction pattern prooerties conforming to <' 0% paniculate coverage >50% coverage ate acoratory identification criteria obser/ed least 20 unfoded or overlapped grid squares F i B C M i <5% holes or opaque areas 9= EDS spectrum conforrriing to laboratory Chrysotile identification criteria obsen/ed AMPHIBOLES Amphibole F = Single =iber Amosite 6 = Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous Anthophyllite C = Cluster (>3 Intersections) Tremolite Non-Asbestos M = Matrix Actinolite Non-Identified NSD = Mo Structures Detected

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