NYC-WTC_000229810

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters'): 1928 Lab Group #: 6479 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 5 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/27/02

Analysis Performed By: pQj__________ ROMAN PE YSAKHOV

GO. Structure Structure Type Length IO of Structure N or 7 ■EDS (Nonadb No F B C M >=05 u >=5|J Chrys Amphibole Nonasb Ambig/ND . / No Coord Elements) <5u

7 z ya' // /(

/0

Struct = > 0.5m > 5:1 Aspect Ratio Grid acceptance: t/= Positive diifraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% ,F B C M >5u 7= EDS spectrum conforming to laooratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ; Amphibole F = Single Fiber Amosite ; B = Bundle (<3 libers <1 fiber diameter apart , Crocidolite ■ i Ambiguous C = Cluster (>3 Intersections) t Anthophyllite | Non-Asbestos ) T remolite; M = Matrix Non-ldentified i Actinolite NSD = No Structures Detected

CITY_21MC100_002869051

NYC-WTC_000229810