NYC-WTC_000228857

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): ISOO Lab Group #: 7717 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX; Magnification: 20,000 GRID ID: # Grid Openings: 4 w Accelerating Voltage: Analysis Date: too KeV 5/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length 'D of Structure Norv EDS INoradb No F 8 C M >=05 M “ >=5p Chrys Amplibole Nonasb Ambig/NO Coord <5m Elements)

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1 Struct = > 0.5(j > 5:1 Aspect Ratio Grid acceptance: yi~ Positive diffraction pattern properties conforming to '50% undissolved filter, sverapped or folded T Qtalx laboratory idsntilicatiai uilena observed <10% particuiate coverage >50% coverage ate east 20 unfolded or overtappefl grid squares <5% F B C M >5p ^/= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Chrysotile amphiboles Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster >3 Intersections) Anthophyllite Non-Asbestos T remolite M - Matrix Actinolite Non-Identified USD = No Structures Detected

CITY_21MC100_002901808

NYC-WTC_000228857