NYC-WTC_000189089

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1936 .all Group #: 594S Filter Type / Filter Area: MCE 385 mm" -^ab Sample #: 20 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 mm"

IRID BOX: Magnification: 20,000 ■Rinm: Accelerating Voltage: 100 KeV / Grid Openings: 4 Analysis Date: 11/21/01

Analysis Performed By: /b ic MICHAEL GORYCKI

GO, Structure Structure Type Length ID of Structure Nor v EDS (Nonadb No F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = > 0.3p >53 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M >5u EDE spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES i Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apar". Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Molrix T remollte Actinolite ! NoD-ldentified K'SD = No Structures Detected

CITY_21MC100_003083440

NYC-WTC_000189089