NYC-WTC_000229126

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7901 Filter Type / Filter Area: MCE 385 Lab Sample #: 12 Grid Opening Sire; 0.01124 Client Sample #; Area Examined: 0.04496 ^4 GRID BOX: Magnificatiop: 20 oqq GRID ID: Accelerating Voltage: 100K.cV # Grid Openings; 4 Analysis Date; 5/29/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Shucture Structure Type Length ID of Stnictore N or '/ EDS Mo Amp-hibote (Nonadb F B C >=05 u >=51J Ciirys Nonaab Ambig/ND <5u Etemenb)

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Struct “ > G.5p > 5;S Aspect Ratio Grid acceptance; ^/= Positive diffradion pattern properties conforming to <50% undissobed filter, overlapped or folded Totals iatxtratory idenfflicatioii critena observed <10% paiSculsta coverage >50% coverage ate

■/= EOS spectrum conforming to laboratory least 20 unfolded dr overlapped grid squares <5% holes or opaque areas F B c M >5lJ

identification criteria observed Chrysotile , AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<J fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersertions) Anthophyllite . Non-Asbestos Tremolite M = Matrix Actinolite . Non-Identified NSD = No Structures Delected

CITY_21MC100_002902245

NYC-WTC_000229126