NYC-WTC_000191883

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8179 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0,04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/19/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = >o.5p >5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% Lindissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded orovedapped grid squares <5% F B C M /= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile ; AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) j Anthophyllite Non-Asbestos ; Tremolite M = Matrix i Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003091873

NYC-WTC_000191883