TEM Asbestos air sample results, NYC BOE, Sep 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8809 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 8 Grid Opening Size: 0 01124

Client Sample #: 08 Area Examined: 0 04496 miTi-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 9/5/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure Norv EDS (Nonadb No F B C M >=05 M ~ >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

Struct = > 0 5p >5 1 Aspect Ratio Gnd acceptance' '/= Positive diffraction pattern properties conforming to <50% undissalved filter, overlapped or folded Totals labora.tory identificapon critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5m v/= EDS spectrum confonning to laboratory holes or opaque areas identification cntena observed Chrysotile Famphiboles 1 Amphibole F = Single Fiber Amosite ' B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = tiuster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_003042922

NYC-WTC_000196794