Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

LI TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 Lab Group #: 6159 Filter Type / Filter Area: MCE 385 mfr,

I Lab Sample #: Client Sample #: 2 05 Grid Opening Size: Area Examined: 001124 0.06744 mm=

I GRID BOX: GRID ID: J C Magnification: Accelerating Voltage: 20.000 100 hey # Grid Openings: 6 Analysis Date: 121.'30/01

I Analysis Performed By: —~~ MARK PEYSAKHOV

GO. Structure Structure Type I Length ID of Structure N or _QS No Amonibote (Ncnadb F B C M >=05 u >=j Chrys Nonasb AmbiglNC No Coord <5µ Elements;

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S[ruct = > (J.5 i > 5 I Aspect Kano Gno acceptance: T.. r.. I.. v= Positive diffraction pattern orotternes conforming to <50% undissolved filter, ovenaopea or foloee laboratory identification criteria ooserveo <10% particulate coverage >50% coverage ate least 20 unfolded or ovedaooed grid souares <5% F I B i C 1 M >5u v= _pS spectrum conforming to laboratory holes or opaque areas ioentificabon cmena observes Chrysotiie AMPHIBOLES Amphiboie F = Single Fiber B = Bundle i<3 fibers <' fiber diameter apart Crocidolite Ambttuous C = Cluster i>3 intersecttonsi Anthaphvllite li on-Asbestos M = Matnx 7remolite Actinolfte Non-Identified NSC = No Structures Detectea

NYC-WTC 000104479