NYC-WTC_000229268

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volnme (liters); 1816 Lab Group #; 8074 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #; 15 Grid Opening Size; 0.01124 Client Sample #: 17 Area Examined; 0.04496 mm^ GRID BOX: Magnification; 20 000 GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 6/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Shticture Structure Type Length ID of Structure N orW EDS (Nonadb No F B C M >=05 M :>=5}j Chrys Amphliole Nonasb Ambig/NO No Coord Eiemenis) <5m

/i

Struct = >0.5p >5. ! Aspect Ratio Grid acceptance; '/= Positive diffraction pattern properties conforming to <50% undusotved fittaf, overtapped or folded Totals laboratory identiteation criteria observed <W% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p >/= EDS spectrum conforming to laboratory holes or opaque areas identificalion criteria observed Chrysotile AMPHIBOLES : Amphibole F = Single Fiber Amosite ; B = Bundle (<3 libera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Interaecdons) Anthophyflile Non-Asbestos ! Tremolite M = Matrix i Actinolite Non-Identified NSO = No S&uctures Detected

CITY_2IMCl00_000491831 NYC-WTC_000229268