NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 29 Grid Opening Size: 0.01124

Client Sample #: 29 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID DP: 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 V EDS (Nonadb No F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND I No ! Coord <5|j Eiemepts)

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Photo No. (trom 1 in o asbestos containing samples) Grid acceptance: Struct - > 0.5u > 3.1 Aspect Ratio undissoived filter, overlapped or folded Totals •7 = Positive oiffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped gnd squares <5% I F i B I C I -M ! >5m boles or opaque areas y= EDS spectrum conforming to laboratory Chrysotile j identification criteria observed i I AMPHIBOLES w E = Single Fiber Amosite Amphibole j Ambiguous | 5 = Bundle l<3 fibers <1 fiber diameter apart Crocidolite C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix ' Non-Identified I Actinolite NSD = No Structures Detected

CITY_21MC100_003069462

NYC-WTC_000202918