TEM air sample results, 125 Liberty St, Oct 2002

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 mm2 Lab Sample #: 34 Grid Opening Size: 0.01124

Client Sample #: 34 Area Examined: 0.24728 mm2

GRID BOX: f t(7 L/ Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure N or EDS (Nonadb No F B C M >~5 ~, >=5p rhrys Amphibole Nonasb Ambig/ND No Coord <5N Elements)

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Ii] I______ i A PhotoNo. (from in asbestos con was samoies V1I J al.liCfJlal ll:li. Struct = > 0.5N > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals v= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critera observed least 20 unfolded or overlapped gnd squares <5% F B i C yj >5l: holes or opaque areas J= EDS spectrum conforming to laboratory Chrysotile identification criteria observed AMPHIBOLES Amphibole = =Single Fiber Amosite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster l>3 Intersections) Anthophyllite Non-Asbestos Tremolite NI = Matrix Actinolite I Non-Identified NSn = No Structures Detecteo — --t--- -----1__ _ ._ . . ..

NYC-WTC 000131571