NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3620 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 43 Grid Opening Size: 0.01124

Client Sample #: 43 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 V EDS (Nonadb No F B C M >=C5j =5p Chrys Amphibole Nonasb Ambig/ND No Coord Elements) «5p

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y v f/ 7 XID 9 '/

il If

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Photo No, (from 1 lb 0 asbestos containing samples) Grid acceptance. Struct = > O.Spi > 5;1 Aspect Ratio <50% undissolvea filter, overlapped or folded Totals v= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laooratory identification criteria observed least 20 unfolded or ovenappea grid squares <5% ' .boles or opaque areas ) i F i B C j M >:□ v= EDS spectrum conforming to laboratory identification criteria observed Chrysotile ] A.MPHIBOLES Amphibole i r = Single Fiber Amosite 3 = Sundie (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous 5 C = Cluster (>3 intersections) Anthophyllite Non-.Asbestos Tremolite M = Matrix Actinolite i Non-Identified NSC = No Structures Detected

CITY_21MC100_003069354

NYC-WTC_000202889