TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume /liters): 1952 Lab Group #: 6060 Filter Type / Filter Area: MCE 385 mm‘ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Ma2nificatiop: 20,000 GRID ID : Aceelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/7/01 Analysis Performed By: /^//^

ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or Y £DS No (Nonadb F B C M ■=05p • >=5(j Chrys Amphibole Nonasb Anibig/ND No Coord I <5u i Elements)

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If A-

i Struct = > 0.5g > 5:1 Aspect Ratto Grid acceptance: ‘7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlappefl or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B I C M >5u v= EDS spectrum conforming to laboratory holes or opaque areas identification criteria oosetved Chrysotile I AMPHIBOLES I Amphibole F - Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) ! Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

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