NYC-WTC_000228526

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N\*C BOE yglume(liteTi); 1920 Lab Group #: 7392 Filter Tvpe / Filter Area: MCF mm Lab Sample#: 8 Grid Opening Size: 0.911 Client Sample #: to Area E.xamined: 0.044Q6 r-m-

GRID BOX: Magnification; 20.000 GRID ID: Accelerating Voltage: 100 KeY # Grid Openings: 4 Analysis Date: 4/13/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length iO of Structure N or v ECS No (Nonaao F B C M »05u Chrys Amphibole Nonasb Amog/NO : No' Coord Elements) I----- i---------- i z !Cr.g>

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Struct • > 0.5p ->5:1 Aspect Ratio Grid acceptance: 'I= Positive diffraction pattern properties conforming to <50% undissolved filer, overlapped or folded Totals laboratory identification critetia observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5M EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F-Single Fiber Amosite B = Bundle (<3 libers <1 fiber diameter apart Crocidolite ' Ambiguous * C ‘ Cluster (>3 IntersectionsI ■ Anthophyllite Non-Asbestos Tremolite , M = Mattix Non-Identified Actinolite NSD - No Structures Detected

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CITY_21MC100_002900874

NYC-WTC_000228526