Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

TEI Asbestos (air) Count Sheet Client Name: ATC Volume (liters): I300 Lab Group #: 6087 Filter Type / Filter Area: NICE 385 mm= Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.06744 mm=

GRID BOX: 6 Magnification: 20.000 GRID ID: 7 Accelerating Voltage: 100 KeV # Grid Openings: 6 Analysis Date: 12/13/01

Analysis Performed By: NLARK PEYSAKHO V

GO Structure Structure Type Length ID of Structure N or v EDS (Nonaob No F B C M >05w >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5w Elements)

Y L I I i

i I i i

I i

I l i ; I

I i i I ________ i 3 Struct = > 0.5µ .> 5: 1 Aspect Ratio Gna acceptance: Positive diffraction oattem orooerties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B 1 C M >5u V = EDS spectrum conforming to laooratory holes or opaque areas identification criteria ooserved Chtvsottie AMPHIBOLES F = Single Fiber Amcsite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite -"moiguous

C = Cluster I>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Ac:inolite Non-identified i J NSC = No Structures Detected _--.—

NYC-WTC 000104510