Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TENT Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 I Lab Group #: 595 4 Filter Type / Filter Area: MCE 385 mm-

Lab Sample #: 5 Grid Opening Size: 0.01124 Area Examined: 0.06741 mm= Client Sample #: 5 Magnification: 20,000 GRID BOX: GRID ID: ;~ accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 11/23/01

I Analysis Performed By: ROMAN PEYSAKHOV

I G0. Structure Structure Type Length 10 or Structure N or EDS (Nonadb --~ No F B C M >=05 a >=~N Chrys Amphibole Nonasb Ambtg/ND No Coord <5u j Elements)

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I Struct = % 0.5µ > 5: 1 Aspect Ratio Grid acceptance: v = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals aboratory identification criteria auservea <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F ; B C M 1 >5w I J= EDS spectrum conforming to laboratory holes or ooaaue areas I identification criteria doserved Chrysotile I I A,vtPHIBOLES Amphibole F = Single Fiber Amosite I B = Bundle (< 3 fibers <1 fiber diameter apart Croc:dolite Ambiguous C = Cluster (>3 intersections) Anthophvllite Non-Asbestos Tremoilte M = Mains Non-Identified Acttnolite I NSD = No Structures Cetected

NYC-WTC 000104445