TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Yame: OTC BOE Volume (liters): 1936 L^bGroup^ 6199 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124

Client Sample #: 2 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/27/01

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or EDS No (Nonadb F B C M >=05 u >=5|J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = > 0,5g >5:1 Aspect Ratio erid 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 >5u 9= EDS spectrum coniorming to laboratory holes or opaque areas ioentification cnteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite j Non-Asbestos ■Tremolite M = Matrix I Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003105100

NYC-WTC_000184425