NYC-WTC_000228246

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7248 Filter Type / Filter Area: MCE 385 mm- Lab Sample #*■ 8 Grid Opening Size: 0.01124

Client Sample#: 08 Area Examined: 0.04496 nim’

GRID BOX: Magnification: 20,000 GRIP ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/28/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 'J EDS (Nonadb No F B C M >=05 U >=5p Chrys AmphS»le Nonasb Afnbig/ND No . Coord <5p Elements)

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( 1

I III Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: Positive diffraction petlem properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% partcutete coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C I M i ■/= EDS spectrum conforming to laboratoiy holes or opaque areas identification cnteria observed Chrysotile AMPHIBOLES : Amphibole F = Single Rber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M - Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002899609

NYC-WTC_000228246