NYC-WTC_000221770

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N\’C BOE Volume (liters): 1840 Lab Group #: 7444 Filter Type / Filter Area: MCE 385mm^ Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Opening^ 4 Analysis Date: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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i Struct = > 0.5(1 >5:1 Aspect Ratio Grid acceptance: /= Positive diffraction pattern properties conforming to c50% undissolved filer, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overiapped grid squares <5% F B I C M >5p '/ = EDS spectrum conforming to laboratory holes or opaque areas icentification critena observed Chrysotile ~l A.MPHIBOLES Amphibole "T“ F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite Actinolite Non-ldentitied NSC = No Structures Detected

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NYC-WTC_000221770