NYC-WTC_000228970

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volunae flitersl: 1800 Lab Group #: 7788 Filter Type / Filter Area: MCE 385 mm^ Lab Sample 14 Grid Opening Size: 0.01124 Client Sample #: 17 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/18/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length IC of Structure N or V EDS I (Nonadb No F C M >=05 M >=5(J Chrys Amphibole Nonasb Arntig/® , No Coord <5p Elements)

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Struct = >0,5(1 > 5:1 Aspect Ratio Ond acceptance: <= Positive diffraction pattern properties conforming to unsolved fllter, or folded Totals lahoratora identification criteria laboratoiy idandfication criteria observed observed parbeuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5h >/= EDS spectrum conforming to iaboratory rales or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite Crocidolite Ambiguous a = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 intersections! Arthcphyllite Non-Asbestos T remolte 4——I- M = Matrix Non-Identified i NSD = No Structures Delected Actinolite i i I

CITY_21MC100_002901983

NYC-WTC_000228970