NYC-WTC_000223120

NYC 9/11 Public Portal Document

FEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7184 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: Magnification: 20,000 GRID ID: M/t/ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/23/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Struct = > 0.5p > S; I Aspect Ratio Grid acceptance; '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 0 = 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_21MC1OO_OO2389134

NYC-WTC_000223120