NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3800 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 10 Grid Opening Size: 0.01124 Client Sample #: 10 Area Examined: 0.24728

GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No >=05 J ;>=5p (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND No. Coord <5p Elements)

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Hhoto No. (from i in o asbestos containing samples) Grid acceptance: Struct = > C.5d > 5:1 Aspect Ratio <50% undissolved filter, overiapped or folded Totals ^1= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification oritena observed least 20 unfolded or overlapped grid squares <5% C M >5u '/= EDS spectrum conforming to laboratory holes or opaque areas P i 2 Chrysotile 1 identification criteria observed AMPHIBOLES j Amphibole r“ P = Single Fiber Amosite 8 = Bunole (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos Tremolite ) M = .Matrix Non-Identified : Actinolite ' NSC = No Structures Detected

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NYC-WTC_000202899