NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3800 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mtn- Lab Sample 12 Grid Opening Size: 0.01124

Client Sample #: 12 Area Examined: 0.24728 mm-

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

Analysis Performed By: ROMAN PEYSAKHOV

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

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ez M i W j

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.......... \ _ M ; ' Photo No. '.from 11n 5 asbestos containing samplesi Gnd acceptance: Struct = > '0.5p .> 5:1 Aspect Ratio <50% undissolved SIter. overlapped or folded Totals 'I = Positive diffraction pattern properties conforming to <10% particuiate coverage >50% coverage ate iaocraiory identification criteria observeo least 20 unfolded or overlappea gnd squares <5% C I M j >5u holes or opaque areas ’. = EDS spectrum conforming to laboratory Chrysotile i laeniificaiion criteria observed AMPHIBOLES Amphibole F = Single -iber I Amosite 3 = aunole (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ; C = Clusier (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-ldentified ; Actinolite NSD = No Structures Derectep

CITY_21MC100_003069323

NYC-WTC_000202858