NYC-WTC_000223693

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7408 Filter Type / Filter Area: MCE 3 85 mnV Lab Sample #: 6 Grid Opening Size: 0.0! 124 Client Sample 06 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 4/14/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V I tDS No F B C M >=05 u >=5)j Chrys Amphibole Nonasb I" AmhgTib-' No Coord <5tJ ! [ Elements;

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Struct = > 0.5g > 5:1 Aspect Ratio Gnd acceptance: 7= 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% r i F ! B ; C S M i v = EDS spectrum conforming to laboratory holes or opaque areas 1 Identification criteria observed Chrysotile ■AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle i<3 fibers <1 fiber diameter apart Crocidolite ■Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite ------------------- L Actinolite Non-Identitied i IMSD = No Structures Delected

CITY_21MC100_002919768

NYC-WTC_000223693