NYC-WTC_000214849

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (lilt 1928 Lab Group #: 8212 Filter Type / Filter A । .'■ICE 385 mm^ Lab Sample#: 13 Grid Opening S (J.01124

Client Sample#: 13 Area Examir (i.04496 mm^

GRID BOX: Magni Ilea I 20,000 GRID ID: Accelerating Volt :i)0 KeV # Grid Openings: 4 Analysis L t 22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure EDS (Nonadb No F B c M >=05 M >=5p Chrys Amphibole Non;- :j/ND Elements) No Coord <5p

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: ■:!s A- Positive diffraction pattern properties conforming to unriissoNed filter, overiapped or folded laboratory identification criteria observed <10% paiticulate coverage >50% coverage ate least 20 unfolded oroveilapped grid squares <5% C M >5p '/= EDS spectrum confonning to laboratory holes or opaque areas identification criteria observed Chrysotile । AMPHIBOLES • Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios • Tremolite M = Matrix Non-Identificd Actinolite NSD = No Structures Detected

CITY_21MC100_002871020

NYC-WTC_000214849