NYC-WTC_000217647

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1872 Lab Group #: 8227 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0,01124 Client Sample #: 12 Area Examined: 0.04496 mm^

GRID BOX: I Maanification: 20,000 GRID ID: GMO Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02 / Analysis Performed By: romaSTreVSAKHOV :

GO. structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb F B C M >=05 u >=51J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = >0.5h >5:1 Aspect Ratio Grid acceptance: A- Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals , laboratory identification crteria observed <10% particulate coverage >50% coverage ate

7= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% F B C M >5p holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES , Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos .Tremolite M = Matrix ■ Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002877495

NYC-WTC_000217647