NYC-WTC_000229002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: -NYC BOE Volume niters): 3808 Lab Group #: 7807 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0,01124 Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID IP: 22, Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/20/02

Analysis Performed By: ROMAN PCYSAKHOV

GO. Structure Structure Type Length IDof Structure N or '/ EDS I NO jNtxiadb i F 6 C M >=OSm >=5jj Chrys Amphibole Notiasb Ambig/ND No Coord Elements) i

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Struct = > 0 5ii > 5; t Aspect Ratio Grid acceptance: 'i= Positire diffraction pattern properties conftming m <50% undissolved 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 1 >5tJ V- EDS spectrum oonferming to .aboratoy holes or opaque areas identification criteria observed Chrysotile t amphiboles --- 1---- Amphibole F - Singie Fiber Amosite Crocidolite Ambiguous B Bundle (<3 fibers <1 t ber diameter apart Anthophyllite 1 C ’ Cluster (>3 Intersections) Non-Asbestos E Tremolite M = Matrix Actinolite Non-ldcntificd USD = No Structures Detected

CITY_21MC100_002902029

NYC-WTC_000229002