Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client -Name: ATC Volume (liters): 131)0 Lab Group #: 5954 Filter Type / Filter Area: NICE 385 mm= Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: H-4 Area Examined: 0.06744 mm= GRID BOX: =7 6 Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 112301

Analysis Performed By: / Jt/' ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or I EDS No F B C M >=t)5 N Chrys No I Coord J <5u >=5p Amphibole Nonasb Amoig/ND (Nonadb Elements)

X Lj L'I i -

U f[ c ! lr

I I I i

I i

I I I I i

Struct = > 0Sµ > 5: 1 Aspect Ratio Grid acceptance: u= Positive diffraction pattern properties conrorming to <50% undissolved filter, overlapped orfolded Totals aooratory identification criteria oeservec <10% particulate coverage >50% coverage ate east 20 unfolded or ovenapped gnu squares <591. F B C M >5N v=

ES spectrum conforming to laooratory holes or opaque areas aentification criteria ooserved Chr✓soule AMPH[BCLES .amphibole Amphibole F = Single giber B = Bundle i<3 gibers <1 fiber diameter 3oan Crocidolite Ambiguous C = luster , >3 Intersections) Anthoonyllite Non-?Asbestos ! Tremolite M = Mainx Non-Identified I Actinelite NSD = No Structures Detected

NYC-WTC 000104455