NYC-WTC_000229044

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7847 Filter Type / Filter Area: MCE 385 Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #: 11 Area Examined: 0.04496 mm^

GRIP BOX: Magnification: 20.000 GRID IP: 23 Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Lengfri ID of Structure N or v* EDS No (Nonadb F B C M >s05p >=5p Chrys Amphitote Nwtasb AmbigMI No Coord <5^, Ele malts)

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Struct = > 0.5p, > 5; I Aspect Ratio Grid acceptance: Positive dlffracCon pattern oroperties conforming to <50% undissohed fiHa, owrtappec or folded Totals ieboratoiy identification criteria observed <10% partkSJlate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m EOS spectrum confaming to latwretory holes or opaque areas identification criteria observed Chrysotile amphiboles Amphibole F - Single Fiber Amosite 8 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Sfructuiss Detecled

CITY_21MC100_002902098

NYC-WTC_000229044