Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

TEII Asbestos (air) Count Sheet I Client Name: Lab Group #: ATC 5954 Volume (liters): Filter Tvpe! Filter Area: 1300 NICE 385 mm=

I Lab Sample 4: Client Sample #: 11 11 Grid Opening Size: Area Examined: 0.01134 0.067-14 mm=

PT GRID BOX: GRID ID: ` Magnification: 7 Accelerating Voltage: 20,000 100 KeV # Grid Openings: 6 Analysis Date: 11:'23/01

Analysis Performed By: I';0 ROMAN PEYSAKHOV J GO, Structure Structure Type 1 Length ID of Structure N or d EDS (Nonaab NO F B C M >=05 N >_5p Chrys Ampnlbole Nonasb Ambig/ND No Coord <5N I I Elements)

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I I Struct = > 0.5i > ; Aspect Runo Gnd acceptance: <50%%o undissolveo filter, ovenappea orfotaea Totals v= Positive diffraction oattern properties conforming to

I laboratory identification criteria ooservea v= EDS spectrum conforming to laooratory identification cntena observea <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% holes or opaque areas _ Chrvsotile j F g

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AMPHIBOLES I F = Single Fiber B = i3unole (<3 fibers <' fiber otam apart Amosite Croc;dolite Antheohyllite ~ Amphibole Ambiguous Non-Asbestos =,luster>3 Intersectional Tremolite I M = Matrix NSD = No Structures Detected Actinotite Non-Idennned

NYC-WTC 000104451