Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TEST Asbestos (air) Count Sheet Client Name: I ATC Volume (liters): 1300 Lab Group #: 5954 Filter Type ! Filter Area: NICE 385 mm= Lab Sample #: 9 Grid Opening Size: 0.0112.4 I Client Sample #: 9 Area Examined: 0.06744 mm= GRID BOX: __ZI Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 1123/01

I Analysis Performed By: ROMAN PEYSAKHOV

I GC. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C M > 05 u > = 5N Chrys Amphibole Nonaso Ambig/ND No Coord N Elements)

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Struct = > 0.5 u > 5. 1 Aspect Ratio Gnd acceptance: , r= Positive diffraction pattern prooerties conforming to c50% undissolved filter, ovenapped or folded Totals identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B ! C M >5u i= EDS spectrum conforming to laboratory laboratory holes or opaque areas identification criteria observed _ Chrvsotile AMPHIBOLES Amphibole F = Single Fiber Amosite 9 = 9undle (<3 fibers <' Tiber Diameter apart Crocidolite Ambiguous C = Cluster '3 Intersecnonsl Anthoonyllite Non-Asbestos i M =Matrix von-Identified i Actinolite NSC = No Structures uetectea

NYC-WTC 000104449