Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet Client Name: EM & CA Volume (liters): 1300 Lab Group #: 6070 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 016 Area Examined: 0.06744 mm'

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/9/01

I Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor EDS (Nonadb No F 6 C M >=05 N >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <51.' Elements)

f tJ '' a7

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F. I I I I I I Struct = > 0.5µ > 5:1 Aspect Ratio '= Positive diffraction pattern properties laboratory identification criteria observed conforming to Grid acceptance: <50% undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate Totals least 20 unfolded or overlapped grid squares <5% F B C 1M >5iu

I 4= EDS spectrum conforming to laboratory identification criteria observed

F = Single Fiber holes or opaque areas

AMPHIBOLES Chrysotile Amphibole Amosite Ambiguous I B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) M = Matrix Crocidolite Anthophyllite Tremolite Actinolite Non-Asbestos Non-Identified _ NSD = No Structures Detected _ _._J

I NYC-WTC 000098439