NYC-WTC_000202890

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 #: 18 Grid Opening Size: 0.01124

Client Sample #: 18 Area Examined: 0.24728 mm"

GRIP BOX: Magnification: 20,000 GRID ID: 74^ Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ________ Al/______ ROMAN PEYSAKHOV

' GO. Structure Structure Type Length ID of Structure N or 4 EDS (Nonadb No F B C M >=05 M >=5)j Chrys Amphibole Nonasb Ambig/ND No: Coord <5p Elements)

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( I Photo NoJJrdnTf5 asoesios containing sampiesi Gnd acceptance: Struct = > O.Sp > Aspect Ratio <50% undissolved filter, overlapped or folded Totals >'= Positive diffraction 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 , C i M 1 >50 holes or opaque areas N = EDS spectrum conforming to laboratory Chrysotile i identification criteria ooserved i I ■AMPHIBOLES ■Amphibole F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster >3 Intersectonsj Anthophyllite Non-Asbestos ! T remolite M = Malnx Non-Identified Actinolite MSD = Mo Structures Detected

NYC-WTC_000202907 CITY_21MC100_0 03069451