NYC-WTC_000188498

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC SCA Volume (liters): 1928 Lab Group #: 5801 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4

Analysis Performed By: y ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No Coord No F B cM >=05 p <5p : =5p Chrys Amphibole Nonasb Ambig/ND Elements)

F T // f)

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Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% 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 >5m y = EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <i fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identified Actinolite N3D = No Structures Detected

CITY_21MC100_003081524

NYC-WTC_000188498