NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 26 Grid Opening Size: 0.01124 Client Sample #: 26 Area Examined: 0.24728 mm^

GRID BOX: Ale? Magnification: 20,000 GRID ED : Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By; ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Stnjcture N or N EDS No (Nonadb F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND No I Coord <5p Elements)

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________ I l I____________ _____________ ________ Photo No. (from 1 in 5 asbestos containing samples) ~ Gnd acceotance: Struct = >0.cu_> 5:1 Aspect Ratio u r .u . <50% undissolved filter, overlapped or folded Totals 7 = Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory iOentification criteria observed least 20 unfolded or overlapped grid squares <5% N= EDS spectrum conforming to laboratory holes or opaque areas i B C i M ! >5m Chrysotile 1 identification criteria observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx I Non-Identified । Actinolite NSD = No Structures Detected

CITY_21MC100_003069459

NYC-WTC_000202915