Cover page for TEM results and chain of custody, 110

NYC 9/11 Public Portal Document

• TEM Asbestos (air) Count Sheet Client Name: EM & CA Volume (liters): 1300 • Lab Group #: 6070 Filter Type / Filter Area: NICE 385 mm2 Grid Opening Size: 0.01124 Lab Sample #: 26 Area Examined: 0.06744 mm2 Client Sample #: 026 Magnification: 20,000 GRID BOX: GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/9/01

Analysis Performed By: ROMAN PEYSAKHOV

I No GO. Coord Structure No Structure Type I F g C l~ >=05 N <51J Length >=5N Chrys ID of Structure Amphibole Nonasb Nor ArnbiglND EDS (Nonadb Elements) l

br ~ %/ •3 _ /

1 f I I El

1 1 Struct = > 0.5x > 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% laboratory identification criteria observed undissolved filter, overlapped or folded <10% particulate coverage >50% coverage ate Totals

least 20 unfolded or overlapped grid squares <5% F B C M >5P 4= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile Li AMPHIBOLES Amphibole F = Single Fiber Amosite i

I Crocidolite Ambiguous' B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified

I. NSD = No Structures Detected

NYC-WTC 000098449