NYC-WTC_000201889

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NAT' BOE Volume (titers): 1840 Lab Group #: 6601 Filter Type / Filter Area: MCE 385 mnr ljab Saniple^ 8 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm‘

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/8/02

Analysis Performed By: Fvifi

ROMAN PEYSAKHOV

GO Structure Structure Type ■ Length ID of Structure Nor v EDS No (Nonadb F B C M >=05 pt :>=5p Chrys' Amphibole Nonasb Ambig/ND No Coord <5p Elements)'

} A II IL zcS ——

Struct = > 0.5p _> 5:1 Aspect Ratio Grid acceptance: v/= Positive dirtraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria osserved <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p yl= EDS spectrum conforming to laboratory holes or opaque areas identilication criteria observed Chrysotile ramphiboles' ] Anrohibole F = Single Fiber Amosite B = Bjndla (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster [>3 Intersections) Anthopnyllite N.on-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = Nc Structures Detected

CITY_21MC100_003269430

NYC-WTC_000201889