NYC-WTC_000208568

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Cole Volume (liters): 450 Lab Group #: 7703 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 1 Area Examined: 0.1124 mm" GRID BOX: Magnification: 20,000 GRIDID: r- Accelerating Voltage: 100 KeV # Grid Openings: 10 Analysis Date: 5/11/02

Analysis Performed By: MARK PEYSAKHOV

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

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties conforming to <^50% undissolyed filter, overiapped orfolded Tot^s laborato7 identification criteria obseived <10% particulate coverage >50% coverage ate least 20 unfolded or overiapped grid squares <5% F B C M >5(j EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_O1O194499

NYC-WTC_000208568