NYC-WTC_000217839

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): I92S Lab Group #: 6598 Filter Type / Filter Area: •MCE 3S5 mm- Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 02 Area Examined: 0.04496 mm’

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2'8/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Ty pe Length ID of Structure N or \ i EDS No F B C "m «05 (J :>=5(J Chrys Amphibole^ Nonasb No Coord <5p I ■ EiemenlS; ’ ---------------- 1---------------

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Struct => O.Sp > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage ?50% coverage ale least 20 unfolded or overtapped grid squares <5% B C i M i >5u >1= 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) Aiithopfiyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite I . i NSD = No Structures Detected

CITY_21MC100_002877930

NYC-WTC_0002 17839