TEM Asbestos air sample results, NYC SCA, Oct 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC SCA yoliune£litersl: 1936 Lab Group #: 5801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 8 Area Examined: 0.04496 mm- ' GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4

Analysis Performed By: / ro^n4eysakhov

GO. Structure Structure Type Lenglh ID of Structure N or EDS No (Nonadb F •B C M >=5p Chrys Amphibole Nonasb Ambig/ND No ■ Coord <5p Elements)

~7p ^3/ pf K ff HZxZ it

4 —t-

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: 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 >5p 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 I Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos I Tremolite M = Matrix Nou-Identified Actinolite N SD =■ No Structures Detected ■

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NYC-WTC_000182623