NYC-WTC_000190027

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume /liters): 1832 Lab Group #: 6735 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0 01124

Client Sample #: 05 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/19/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v/ EDS (Nonadb No F B C M >=05 p •=5(J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

1/

Struct = > 0 5pi >5 1 Aspect Ratio Grid acceptance

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identfication cntena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped gnd squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Idennfied NSD = No Structures Detected

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NYC-WTC_000190027