Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

1 TEM Asbestos (air) Count Sheet I Client Name: Lab Group #: ATC 625 5 Volume (liters): Filter Type! Filter Area: 15-I- NICE 385 nim=

I Lab Sample #: Client Sample #: 1 I Grid Opening Size: Area Examined: 0.01 124 0.0:62 mm= GRID BOX: Magnification: I GRID ID: 3 iy # Grid Openings: 5 Accelerating Voltage: Analysis Date: 20,000 100 KeV 113,02

I Analysis Performed By: MARK PEYSAKHOV

I GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M >=05 u >=5(J Chrys Amphibole Nonasb Ambig/ND

Ll No Coord <5u Elements)

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I I I I I I i I

I Struct = :> 0.5u > 5: 1 Aspect Ratio Grid acceptance: v= Positive diffraction oattem properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate

I laboratory identification criteria observed i= EDS spectrum conforming to laboratory identification criteria observed o least 20 unfolded or overlapped grid squares <5% holes or opaque areas Chrysotile F - B I C M >-u

AMPHIBOLES 4mpnibole

I F = Single Fiber B = Bundle I<3 fibers <1 fiber diameter apart D = Cluster I>3 Intersections) Amosde Crocicolite Anthophyllite ambiguous 1 Non-Asbestos Tremolite

I M = Matrix Non-laentitied Aciinolite NSD = No Structures Detected

NYC-WTC 000104494