NYC-WTC_000218348

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^’C BOE Volume (liters): 1920 Lab Group #: 6986 Filter Type / Filter Area: ■MCE 385 mm- Lab Sample 12 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: (J 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3'8/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or EDS ; I'NonadC ■ No F 3 C I M >=05 u >=5(4 Chrys Amphibole I Nonasb Amoig/ND No Coord <5p Elements) i

—I I I

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern properties conforming to <50% undissolved fiiter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate leasi 20 unfolded or overlapped gnd squares <5% j F I B i C \ - EDS spectrum conlorniing to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphiboie ; F = Single Fiber Amosite □ = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ' C = Cluster (>3 Intersections) Anthophyllite Non-Asbesios : Tremolite M = Matrix Actinolite r Non-Ideniified ■ NSD = No Structures Detected

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