NYC-WTC_000224213

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7446 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure NorN EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/NO Coord <5u Elements)

7^ i

Struct = > O.5p ,> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissohed filter, overtapped 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 >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES , Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO2892818

NYC-WTC_000224213