NYC-WTC_000203476

NYC 9/11 Public Portal Document

TEM AsbestPs (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0 04496 mm" GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5p >51 Aspect Ratio Totals <50% undissolved filter, overiapped or folded '/= Positive fliffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification catena observed least 20 unfolded or overlapped gnd squares <5% F B C M >5(J holes or opaque areas ■ ■7= EDS spectrum conforming to laboratory Chrysotile identificabon catena ooserved ' AMPHIBOLES Amphibole F = Single F'ber . Amosite 3 = Bundle (<3 fibers <1 fiber diameter span Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected - _J

CITy221MC100_003058146

NYC-WTC_000203476