Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TENVI Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 I Lab Group #: 5954 Filter Type .' Filter Area: NICE 385 mm2 Lab Sample #: 7 Grid Opening Size: 0.01 1 24 I Area Examined: 0.06744 mm= Client Sample #: 7 GRID BOX: 5 - Magnification: 20.000 I GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 1123i0[

I Analysis Performed By: (Q.P ROMAN PEYSAKHOV

GO. j Struc:ure Structure Type ; Length io of Structure N or v EQS No F B C M ' -05 u >=5N Chrys Ampnibole Nonasb Amoig/NO (Ncnadb No Coord (Su ry Elements) Ia

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Struct = = 0.5u % 5: I Aspect Ratio Gnd acceptance: v= Positive diffraction pattern properties conforming to <50% undissoivee filter, overlapped orfoldeo Totals laooratory identification criteria observeb <1 0% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% ! F B C N1 1 >5w v= ECS spectrum conforming to Laboratory holes or opaque areas aentiflcation cntena observed Chrvsotile AMPHIBOLES Amphibole I F = Singe Fiber Amosite B = Bundle <: fibers <1 'iber diameter span Crocfoolite Ambiguous = Cluster I>S ntersec:ions) Anthoohvilite Non-Asbestos 7remorite L M = Matrix Non-Identified Ac moLite NSC = No Slruc:ures Cetec:ed

NYC-WTC 000104447