NYC-WTC_000202594

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9213 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0.04496 mm-

GRID BOX: eg Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor T EDS No (Nonaob F B C M >=05 |J Chrys Amphiboie Nona.sb Ambi'g/ND No Coord <5m Elements I

1 i) zVYj *

Fhora .Mo. (from 1 in 5 asbestos containing samp Grid acceptance: Struct = > J 5d > 5:1 .Aspect Ratio <50% undissolved filter, overlapped or folded Totals Positive ciffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed east 20 unfolded oroverlappeo grid squares >:u i <5% holes or opaque areas F B C tCS spectrum oonfcrming to laboratory Identification criteria observea Chrysotile I .AMPHIBOLES Amphibole F = Single Fiber j Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite .A.mbigucius C = Cluster (>3 Intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non-ldentified NSD = Mo .Structures Detected

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NYC-WTC_000202594