NYC-WTC_000207567

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; .NYC.BOE-• Volume niters): 1920 Lab Group #: 8179' Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: ■20 ■ Grid Opening Size: 0.01124

Client Sample #: .'20. ' Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV; ■ # Grid Openings: 4 Analysis Date: 6/19/02

Analysis Performed By: _________ ROMAN PEYSAKHOV. .

GO. Structure Structure Type Length ' ID of structure Norv • EDS (Nonadb'■ No F B C M >=05 M >=5p Chrys Amphibole Nonasb Ambig/ND ■ No ' Coord <5|j 'Elements) .

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Struct = > 0.5h >5:1 Aspect Ratio Grid acceptance: v/= Positive diffraction pattern propertes conforming to "50% undissolyed filter, overlapped or folded Totals laboratory identification criteria obsen/ed AM* « ■ AM <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Clirysotile AMPHIBOLES Amphibole E = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified i Actinolite NSD = No Structures Detected

CITY_21MC100_003015418

NYC-WTC_000207567