NYC-WTC_000229204

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7988 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #; 07 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,1sss GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/6/02

Analysis Performed By: MARK PEYSAKHOV

Sfructure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M >=05 p >=5m Chrys Amphiboie Nonasb AmbigW ' No : Coord <5p Elements)

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4-

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; 4= Positive diffraction pattern properties conforming to <50% undissolved liKsr, ovariapped or folded Totals laboratory identtitcation criteria observed <10% particulate ccweiaoe >50% coverage ate least 20 unfolded « ovedapped grid squares <5% F B C M >5p 4= EOS spectrum conforming to laboratory holes Of opaque areas identiflcaton criteria observed Chrysotile AMPHIBOLES Amphibole" F = Single Aber Amosite B = Bundle (<3 fibers <1 fiber diameter apart CraefdoHte Ambiguous C = Cluster (>3 Intersectionst Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Nou-Identified NSD = No Structures Detected

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