TEM Asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^'C BOE Volume (liters): 1936 Lab Group #: 6084 Filter Type / Filter Area: MCE 385 Lab Sample #: 20 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 mm*

GRIP BOX- Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/13/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure (Structure Type Length ID of Structure N or 7 EDS (Nonadb 1^0 FT B C M >=orjj :>=5(j Chrys Ampnibole Nonasb Amoig/ND Nc Coord <5p Elements)

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! S'.rucT = > 0.5u 5:1 Aspect Ratio Grid aaeplance: Positive diffraction pattern properties Gonforming to <50% undissolved filter, overlapped or folded Totals laooratorv identification oritena observed <10% partiojlste coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% EDS spectrurTi conforming to laboratory holes or opaque areas p p C M >5u Identification critena observed Chrysotile i i ■AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-Identified NSD = No Structures Delected

CITY_21MC100_003104741 NYC-WTC_000184181