NYC-WTC_000201259

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: .7325 Filter Type / Filter Area: MCE- 385 mm- Lab Sample #: i8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm*

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

Analysis Performed By: MARK PEYSAKHOV

SFucture -- Structure Type Length ID of structure . Mor 7 EDS • GO. (Nonadt No IF ■ B I 0 M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5iJ Etemerts)

■

I r

■

Struct = >0.5n >5:1 Aspect Ratio Grid acceptanse: 4= Positive diffraction pattern properties conforming to <50% undissoivsd filter, overlapped orfolded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate east 20 unfolded or overlapped grid squares <5% F B C M >5p 4= EDS spectrum conforming to laboratory holes or opaque areas identification criteda observed Chrysotile AMPHIBOLES Amphibole - = Single Fiber Amosite 3 = Bundle j<3 fibers <1 fiber diameter apart Crocltholire Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified - Actinolite NSD = No Structures Detected

CITY_21MC100_011275539

NYC-WTC_000201266