Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

I TENT Asbestos (air) Count Sheet Client Name: Airtek Volume (liters): 1300 1 Lab Group #: Lab Sample #: 6115 10 Filter Type / Filter Area: Grid Opening Size: MCE 385 mm2 0.01124 Client Sample #: 10 Area Examined: 0.06744 mm2 GRID BOX: 6I Magnification: 20,000 GRID ID: Cy Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/15/01

I Analysis Performed By: MARK PEYSAKHOV

I No GO. Coord Structure No Structure Type F B C M >=05 u 5u Length >=5p Chrys ID of Structure Amphibole Nonasb Nor v AmbigiND EDS (Nonadb Elements) c

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

NYC-WTC 000098463