TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m’C BOE Volume (liters): 1816 Lab Group #: 6843 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0,04496 mm"

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 2/27/02

.Analysis Performed By: MARK PEYSAKHOV

GO. i Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M ■=05p >=5p Chrys S Amphibole Nonasb Ambig/ND No Coord <Sp Elements)

2

I I

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to ^^0% undissolved filter, overlapped o,' folded Totals :10% oarticulats coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% \ F B C M >5p EDS spectrum conforming to laboratory holes or opaque areas I identification criteria observed Cluysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <' fiber diarr.eter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos ] Tremolite M = Matrix ■ Non-Identificd Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO31O3527

NYC-WTC_000183917