NYC-WTC_000227253

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7033 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: ^zr/X:. Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/12/02

Analysis Performed By: ./ ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = > 0.5)1 .> 5:1 Aspect Ratio Grid acceptance: 'i- Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 7= 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) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002898541

NYC-WTC_000227253