Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TEMM Asbestos (air) Count Sheet Client Name: ATC I Volume (liters): 1300 Lab Group #: 6159 Filter Type / Filter Area: MCE 385 mm2 Lab Sample #: 5 Grid Opening Size: 0.01124 I Client Sample #: 08 Area Examined: 0.06744 mm= GRID BOX: Magnification: -i 0,000 I GRID ID: Accelerating Voltage: 100 keV # Grid Openings: 6 Analysis Date: 1_/20;01

I Analysis Performed By: MARK PEYSAKHOV I GO Structure Structure Type Length ID of Structure N or v EDS No F B C M '=05 u Amphibole Nonaso j Amoig/ND (Nonadb Chrys No Coord <5{J I Elements)

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I Struct = > 0.5u > 5: i Aspect Ratio Grid acceptance: v= Positive diffraction pattern properties contorminc to <50% undissolved fitter. overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gna squares <5% r B l j M >5 u I EGS spectrum contorming to iaooratory holes or opaque areas ;aentificauon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite I B = Bundle (<3 fibers 1 fiber diameter apart Crocidolite Ambiguous C = Cluster 1>3 Intersections) Anthopnyllite Non-Asbestos —~— Tremolite M = Matrix Actinolite Non-Identified j I NS C = No Structures Detected __ _. _ — -_ _ _ __ I I

NYC-WTC 000104482