NYC-WTC_000229054

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voinme (liters): 1808 Lab Group#: 7858 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRIDID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Pate: 5/25/02

Analysis Performed By: MARK PEYSAKHQV

GO. Structure Structure Type Length ID of Structure N or v EDS No >*05 p ~| iNonadh F B C M >=5p Chrys Amphibole Nonasb Amb^ND No Coord : <5p Etements)

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I_____ L_L_L„ Struct = > 0.5u >5:1 Aspect Ratio Grid aaeptance: v= Positive diffrsracn pattern properties conforming to <50% undissoived filter, overlapped orfolded Totals laboratory identification citena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5jj 4- EDS spectrum conforming to laboratory holes or opaoue areas identifieation criteria obsenied Chrysotile AMPHIBOLES Amphiboie F - Single Fiber Ambsite B = Bundle (<3 fiber? <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbcstos Tremolite M * Watra Actinolite Non-Identified NSO = No Structures Detected

CITY_21MC100_002902117

NYC-WTC_000229054