NYC-WTC_000228339

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 6398 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm^

GRIP BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/22/02

Analysis Performed By: MARK PEYSAKHOV

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

a,

Struct ■ > 0.5u >5:1 Aspect Ratio Grid acceptance: Positive dtttraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identjficatiofl criteria observed <10% particulatB coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ’/= EDS spectrum conforming to laboratoiy holes or opaque areas irtenliftcatlon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundis (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C» Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolito M = Matrix Actinolite Non-Identified NSD s No Structures Detected

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NYC-WTC_000228339