NYC-WTC_000221409

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC B< )R Volume (liters): 1848 Lab Group #: 7890 Filter Type / Filter Area: MCE 385 Lab Sample #: 8 Grid Opening Size; 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/28/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure St Licture Type Length lb of Stnjcture EDS No (Nonadb F 3 C M >-05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

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Struct = >0.5p >5:1 Aspect Rati Grid acceptance; >/= Positive diffraction pattern properties' ■j. " ng to ‘=50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M >5m EDS spectrum conforming to laborato holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter ar Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-ldentified Actinolite NSD = No Structures Detected

CITY_21MC100_000622296 NYC-WTC_000221409