NYC-WTC_000201563

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fliters): 1840 Lab Group #: 7503 Filter Type / Filter Area: MCE 385 mm" Lab Sample#: 3 Grid Opening Size: 0.01124 Client Sample #: 03. Area Examined: 0.04496 mm^ GRIS BOX: Magnification: .20..000 GRID ID: 3322 Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/22/02

Analysis Performed By: GT) ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 2 EDS (Nonadb . No F B C M >=05 p >=5|J ' Chrys Amphibole Nonasb. Ambig/ND - No i Coord Elements) <5y -'•yil" -It- //

Struct = > 0,5p .> 5:1 .Aspect Ratio Grid acceptance: ’/= Positive diffraction pattern prope.dies conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5pi 3 EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber 1 Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos ; Tremolite M = Matrix Non-Identified Actinolite NSO = No Structures Detected

NYC-WTC_000201565