NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: few Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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........L '■ Photo No. (from 1 in 5 asbestos containing samples) ! i __ Gnd acceptance: Struct > O.vp A 5,1 Aspect Rado undissolved filter, overlapped or folded Totals V = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observeo least 20 unfolded or overlapped grid squares <5% IF j B I C i M j >5u 'j= EDS spectrum conforming to laboratory holes or opaque areas ---------------------1---- Chrysotile identification critena observed AMPHIBOLES ■Amphibole r = Single Fiber Amosite a = Sundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos } Tremolite M = Matrix Actinolite Non-ldentified i NSD = No Structures Detected i_________________ 1

CITY_21MC100_003069327

NYC-WTC_000202862