NYC-WTC_000200510

NYC 9/11 Public Portal Document TEM Asbestos ( air) Count Sheet Client Name: NYC BOE Volume niters): 1805 Lab Group #: 8104 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.64496 mm A .

GRID BOX: Magidficatton: 20 000 GRID ID: Accelerating Voltage: TOO KeV # Grid Openings: 4 Analysis Date: 6/15/02

Analysis Performed By: MARK PEYSAKHOV ,

GO. Structure Structure Type Length ID of Structure NorA 'EDS No : :(Nonadb ■ F B C M >=05 p '>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5u Etements)

I- ' ,.1 I 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 ovetlappet! griri squares <5% F B C M T >5p ■ : EDS spectrum conforming to laborato^ 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) j Anthophyllite Non-Asbestos M = Matrix i Tremolite t Actinolite Non-Identified NSD = No Structures Detected

NYC-WTC_000200525