NYC-WTC_000200648

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 8228 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 16 Grid Opening Size: 0.01124

Client Sample #: 16 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20 000 GRID ID.- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/23/02

Analysis Performed By: fv ' ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure NorN EDS Y No : ■ (Nonadb ,F B C M >=05 py >=51J Chrys Amphibole Nonasb Ambig/ND Coord <5m ' Elements)

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1/T Struct > 0.5pt > 5:1 Aspect Ratio , At; f Grid acceptance; Positive diffraction pattern properties conformirig to "^50% undissolyed filter, overlapped or folded Totals laboratory identification criteria observed / <10% particulate-coverage >50% coverage ate least 2C unfolded or overlapped grid squares <5% F B C M >5p A- 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 Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite i I M-Matrix Non-ldentified Actinolite NSD = No Structures Detected' . r

NYC-WTC_000200663