NYC-WTC_000199419

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 4 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 '■■//

GRIDID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02 Analysis Performed By: ______i^t^_____

ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 p Chrys Amptiibole Nonasb Ambig/ND No Coord Elements) <5p

'7/:^ ZEVS ztS E-^

A- -

T|

Struct = > () Op >' 5-1 Aspect Ratio Gria acceptance

\ = Positive oiffraction pattern properties conforming to <50% undissolved filter, overlapped oi folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% B C M ^5p G EDS spectrum conforming to laboratory I F holes or opaque areas identification criteria observed Chrysotile j "amphiboles Amphibole F = Single Fiber Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos Tremolite M = Matrix i Non-Identified , Actinolite NSb = No Structures Detected

CITY_21MC100_003033894

NYC-WTC_000199419