NYC-WTC_000193407

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 8227 Filter Type / Filter Area: MCE 385 mnE Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #•. 21 Area Examined: 0.04496 mm'

GRID BOX: ( Magnification: 20,000 GRID ID: ?7 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Pertormed By: f\ J ROMAN PEYSAKHOV

GO. structure Structure Type ■Length ID of Structure N or s' EDS I (Nonadb ! No F B C >.=05 p >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

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Strijct = > 0.5p > 5; 1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to "50% undissolved filter, ovedapped or folded Totals ,.u__ „i_______________________ laboratory J identification criteria obsen/ed <10% particulale coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C m V EDS spectrum conforming to laboratory holes or opaque areas idertificalion criteria observed Chrysotile [ AMPHlBOLES~~j Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fber diameter apart Crocidolite . I Ambiguous C = Cluster (>3 Intersections) Anthophyllite ; Non-Asbestos Tremolite ' M = Matrix Actinolite i Non-Identified NSC) = No Structures Detected

CITY_21MC100_003094605

NYC-WTC_000193407