Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet Client -Name: ATC Volume (liters): 1300 n

Lab Group #: 3954 Filter Type Filter Area: NICE 383 mm= Lab Sample #: 13 Grid Opening Size: 0.01124 Area Examined: 0.06744 mm= Client Sample #: H-2 GRID BOX: Magnification: 20.000 GRID ID: _______ Accelerating Voltage: 100 KeV # Grid Openings: 6 analysis Date: 1123;01

I Analysis Performed By: ROMAN PEYSAKHOV

I 30. Structure NO Structure Type >=05 Length IO of Structure N or N ECS (Nonaab F B C M P >=5N Chrys Amphibole Nonasb Ambt9/ND E'ements) No Coord <5µµ

'LB ' 7 I E7 z /t

ID r /

I I LI I I I I II

I I Struct = > 0.5µ > 5: I Aspect Ratio v= Positive atffraction pattern properties -onforming :o Gno acceptance <50% unoissolveb filter, overlapped or folded Totals

I aooratory cenufication criteria observed <' 0% particulate coverage >50% coverage ate least 20 untolded or overlapped gna squares <5% F B C NI >5u N= EuS soectrum conforming to iaooratory holes or opaque areas identification criteria observed _ Chrysottle AMPHIBOLES

I Amphibole ! I 1 F = Single Fiber Amoslte Ambiguous ! I B = Bundle <3 fibers <1 'fiber diameter apart Crocidolite = Fusteri>3'ntersecoons) .4nt o nVlhte Non-Asbestos ! I remoiite

I M =Matrix NSD = No 3truc:ures Oetecteo actinolite Non-Identifies I F

NYC-WTC 000104453