NYC-WTC_000225546

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name:- NYC BOE Volnme flitersl: 1936 Lab Group #: 6091 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/14/01

Analysis Performed By: MARK PEYS/tKHOV

GO, Structure Structure Type Length ID of Structure NorN EDS No >=05 p Amphibole Nonasb Ambig/ND (Nonadb F B C M >=5)J Chrys No • Coord <51J Elements)

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k-4

Struct = > 0.5 p > 5:1 Aspect Ratio Grid acceptance; >/= Positive diffraction pattern properties conforming to <50% undissoived 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 >5m ! ^/= EDS spectrum conforming to laboratory holes or opaque areas identificabon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite S = 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 Detected

CITY_21MC100_002921559

NYC-WTC_000225546