NYC-WTC_000219590

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 6989 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 17 Grid Opening Size: 0.01124

Client Sample #: 19 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRIDID: Accelerating V'oltage: 100 KeV # Grid Openings: 4 .Analysis Date: 3/9/02

Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length 10 of Structure N or A £DS (Nonaab No F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/NO No Coord <5m Elements)

Struct = >O.5p >5:1 Aspect Ratio Grid acceptance;

V= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped gnd squares <5% B I C i M I >5p 9= EDS spectrum conforming to laboratory holes or opaque areas : „„.. —11 identification cnteria observed Cluvsolile .amphiboles Amphibole i F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambieuous Anthophyllite \i)n Asbestos C = Cluster (>3 intersections! Tremolite M = Matrix ; Wii-kleiiiilicJ Actinolite NSD = No Structures Delected

CITY_21MC1OO_OO2881327

NYC-WTC_000219590