NYC-WTC_000227846

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client .Name: NYC BOE Volume (liters): 1840 Lab Group #: 6672 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm- GRID BOX: .PsC Magnification: 20 000 GRID m: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/14/02

Analysis Performed By: RP ROMAN PEYSAKHOV

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

ES 2-C 7 (p-z If

Struct ” > 0.5g > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattemproperties conforming to <50% undisaolved filter, overlapped or folded Totals <10% partculate coverage >50% coverage ale laboratory Identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5p ’/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ’ Amphibole F * Single Fiber I Amosite B = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos ! Tremolito M = Matrix ! Actinolite ; Non-Identified NSD = No Structures Detected

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