TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NX'C BOE Volume /liters): 1816 Lab Group #: 6^80 Filter Tvpe / Filter Area: MCE 3S5 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID [D : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/22/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor' v EDS No (Nonadb : F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/NO Elements) No Coord <5p

i

Struct = > 0.511 > 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or tolded Tot^ laboratory ideniification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid sauares <5% f j F j B I C • M ! ’Sy \= EDS spectrum conforming to laboratory holes or opaque areas L identification criteria observed AMPHIBOLES Clirysotile j s i Amphibole । F = Single Fiber Amosite 3 = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Iniersections) Anthophyllite Non-Asbestos । Tremolite M = Matrix Non-Identified i Actinolite NSD = No Structures Detected

CITY_21MC100_003103387

NYC-WTC_000183847