NYC-WTC_000228919

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volnme {liters): 1840 Lab Group #: 7741 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 17 Grid Qpenine Size: 0 01124 •Client Sample #: 19 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysts Perlbrnted By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure Nor r/ EDS No (Nona(& F B C >==05 p I :>=5}j Chrys Amphibote Nonasb Ambig/NO No Coord <sp Elements)

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Struct = > 0,5 g > 5; 1 Aspect Ratio Grid aaeptance: V- Positive diffraction pattern properties conformins to <50% undissolved fiter. overtappsd or folded Totals laboratoty identification criteria observed <10% particulate coverage >50% coverage ata least 20 unfolded or ovffliapped grid squares <5% F B C M >5m ■ -J=EDS spectrum cwifonning to laboratory . holes or opaque areas ideritification criteria observed Chrysotile AMPHIBOLES Amphibole F > Single Fiber Amosite B = Bundle l<3 fibers <1 liber diameter apart Crocidolite Ambiguous j C = Cluster (>3 Intersecttons) Anthoptiyllite Non-Asbestos j Tremolite M > Matrix Actinolite Non-IdentifietJ ! I NSD = No Structures Detected

CITY_21MC100_002901890

NYC-WTC_000228919