NYC-WTC_000229216

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1856 Lab Group #: 8002 Filter Type / Filter Area: MCE 385 nim^ Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496

GRID BOX: Magnification: 20, Bas GRID ID; Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Pate: 6/8/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Sbucture Type Length ID of structure NorV EOS No >=05 M ~ Amptiibots Nonasb AmtugMD (Nonadb F S C M >=5p Chrys No Coord «5m Elements) /

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Struct = > Cl.5n >5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissotved Otter, overlapped or totdeo <10% jarticulate coverage >50% coverage ate XstaU tatmtory identificaaai criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5m ■7= EDS spectrum conforming to tattoratory holes or opaque areas identificatton criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite Croddolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyifite Non-Asbestos Trerrmfite M = Matrii( Actinolite Non-tdennfied NSO = No Structures Detected

CITY_2IMCl0 0_0 00491729 NYC-WTC_000229216