NYC-WTC_000190166

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 6843 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0 01124 Client Sample #: 11 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID- Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/27/02

c. Analysis Performed By: MARK PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb I No F B C M ■=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND No Cooid <5m Elements)

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Siiuct = >0 5p >5 1 Aspect Ratio Gnd acceptance Positive diffraction pattern properties conforming to ^^0% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers -ri fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite , Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD - No Structures Detected

CITY_21MC100_003088712

NYC-WTC_000190166