NYC-WTC_000228534

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NTC E1OE Volume (liters): 1792 I Lab Group 7407 Filter Type / Filter Area: M' ‘E 3S5 rr i I i Lab Sample 10 Grid Opening Size: ■ 124 i

Client Sample #: 12 Area Examined: 0.04496 mm-

GRID BOX: Magnification: ?o opg GRH>1E>: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/13 '02

Analysis Performed By; ROM/\N PEYSAKHOV

GO. Stfuctufe Structure Type Length ID of Stnicture or v EDS (Nonaoo No F B C M >=05 p >=5|j Chrys Amphibole Nonasb AmbigZNO iNoj Coord <5m Elements)

/IB' 'f

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Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: ■7= Positive diffraction pattern properties conforming to <50% unOissohed fiSer. overlapped or folded Totals laboratory identification criteria observed <10% partoilate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M '}• EOS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 6 = Bundle (<3 Abers <1 Aber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_002900899

NYC-WTC_000228534