NYC-WTC_000219505

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 6898 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.04496 mm-

GRID BOX: Ma2nification: 20,000 GRIDro; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/3/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: v/= Positive diffraction pattern properties conforming to ^ndissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

A- EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas p p C M i >5u

identification criteria observed Chrysotile i i AMPHIBOLES Amphibole l F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I T remolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_2IMCl0 0_0 0 0 4 6 8 0 5 3 NYC-WTC_000219505