TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume niters): 1832 Lab Group #: 6765 Filter Tvpe / Filter .Area: MCE '385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 ■Analysis Date: 2'21/02

Analysis Performed By: ROMLAN PEYSAKHOV

GO, Structure Structure Type Length . ID of Structure Nor v EDS No >=05 u (Nonadb F B C ! M >=5|j Chrys Amohibole Nonasb Ambig/ND No Coord <5(j Elements)

( jZa.

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Struct = > 0.5(1 _> 5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F j B { C I M I >5y \= EDS spectrum conforming to laboraiorv' holes or opaque areas idandfication oritena observed Chrysotile ! I AMPHIBOLES i .Amphibole j r = Single Fiber Amosite i i 3 = Bundle (<3 Obers <1 fiber diameter apart Crocidolite Ambiguous j i ! C = Cluster (>3 intersections) Anthophyllite i Non-Asbestos I Tremolite M = Matrix Non-Identified ; Actinolite i NSC = No Structures Detected

CITY_21MC100_003103359

NYC-WTC_000183836