NYC-WTC_000218136

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NVCBOE Volume (liters); 1929 Lab Group #: 7058 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #; 05 Area Examined: 0.04496 mm* GRID BOX: 9^ Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 3/13/02

Analysis Performed By: ROMAN PEYSAKHOV

! GO. Structure Structure Type Length 10 of Structure N or v EDS INonadb No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = > 0.5p -> 5; 1 Aspect Ratio Grid acceptance: ^^= Positive diffradion pattern properties conforming to <50% undissolved filter, overtapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B I C M >5u n/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chry’sotile AMPHIBOLES Amphibole F = Single Fiber Amosite Ambiguous 1 B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 Intersections) Crocidolite Anthophyllite Tremolite Non-Asbestos t M = Matrix NSD = No Structures Detected Actinolite Non-Identified I CITY_21MC100_000465948 NYC-WTC_000218136