Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TENT I Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 LI Lab Group #: 608- Filter Type / Filter Area: MCE 385 mrn Grid Opening Size: 0.01124 Lab Sample #: 9 I Client Sample #: 9 Area Examined: 0.06744 mm=

GRID BOX: Magnification: 20.000 GRID ID: _ _ r .Accelerating Voltage: 100 KeV I # Grid Openings: 6 Analysis Date: I2/13/01

~j~ / I Analysis Performed By: MARK PEYSAKHOV

I GO Structure Structure Type Length ID of Structure N or -i EDS INcnadb No F B C M >P)5 >=5p Chrys Amphibole Nonasb AmolgiND No Coord <5~ Elements)

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I Struct = > 0.5µ > 5: 1 Aspect Ratio Grid acceptance: 'J= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or rolaee Totals laooratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% j F B C M >u LI EDS spectrum conforming to laooratory Identification cntena observed holes or opaque areas Chrvsonle j AMPHIBOLES

I Amphibole i I F = Single Fiber Amosite 8 = Bundle 1<3 fibers <1 fiber diameter aoart Croc:dolite Ambiguous j C = Cluster i>3 Intersections) Anthophydite Tremolite M = Matro Non-[dentified Actinclite NSD = No Structures Detected __- I NYC-WTC 000104509