NYC-WTC_000228073

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NAT BOE Volume (liters): 1840 Lab Group #: 7009 Filter Type / Filter Area: MCE 385 mnr Lab Sample #: 3 Grid Opening Size: 0 01124

Client Sample #: 3 Area Examined: 0.04496 mm-

GRID BOX: Magnification: -tq qqq GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/10,^02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor v EDS (Nonadb I : No F B C M >=05 u r~>=5(j Chrys Amphibole Nonasb Ambig/ND ,_ J I No ' Coord <5u Elements)

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I i_______ ___________ 1__J__1__ Struct = > 0.5u -> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratoy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B I C M >5iJ >1= 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_006617536

NYC-WTC_000228073