NYC-WTC_000201979

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1840 Lah Group #: .7215 ■ Filter Type / Filter Area: MCE 385 mm- LabSample^ 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm’ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: ' 3/26/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length iD of Structure N or n' EDS. (Nonadb ' ■ No F B C M : >=05 U >=5|j Chrys ..Amphibole Nonasb Amtig.'ND i No : Coord <5p Elerrents)

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Struct - > 0.dp > 5:1 Aspect Ratio .: Grid acceptance: /= Positive diffracticn pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded oroveriapped grid squares <5% F B C i M >5u /= EDS spsclrum conforming to laboratory. holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole .F = Single Fiber : 1 i Amosite B = Bundle (<3 fibers <1 fiber diameter apart i Crocidolite Ambiguous C = Custer !>3 IntersectionsJ i Anthophyllite Non-Asbestos Tremolite .M = Matrix 1. Non-Identified Actinolite USD = No Structures Detected

CITY_21MC100_011275921

NYC-WTC_000201979