Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet Client Name: Airtek Volume (liters): 1300 I Lab Group #: 6120 Filter Type / Filter Area: MCE 385 mm' Grid Opening Size: 0.01124 Lab Sample #: 13 Area Examined: 0.06744 mm- I Client Sample #: 64' ' 23 Magnification: 20,000 GRID BOX: ID: Accelerating Voltage: 100 KeV C GRID # Grid Openings: 6 Analysis Date: 12/16/01

Analysis Performed By: P I ROMAN PEYSAKHOV

Structure Type Length ID of Structure Nor '1 EDS GO. Structure I No F B C M >=05 N <5N >=5p Chrys Amphibole Nonasb AmbigiND (oi b Elements) No Coord

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Struct = > 0.5µ > 5:1 Aspect Ratio Grid acceptance: I <50% undissolved filter, overlapped or folded 4= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate Totals laboratory identification criteria observed M >5P least 20 unfolded or overlapped grid squares <5% F B C J= EDS spectrum conforming to laboratory holes or opaque areas Chrysotile I identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous C B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) M = Matrix Crocidotite Anthophytlite Tremolite Actinolite Non-Asbestos Non-Identified I NSD = No Structures Detected _ - I NYC-WTC 000098496