NYC-WTC_000204256

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 7348 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size: 0.01124

Client Sample #: 06 Area Examined: 0.04496 mm'

GRID BOX: Magnification: 20,000 GRID ID: ' Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or N EDS (Nonadb No F B C i M >=05 p >=5u Chrys Amphiboie Nonasb Ambig/ND No Coord Elements) <5m r 4_ C3 pi y

____________________ i 1 : i Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: M = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped orfolded Totals 10% particulate coverage >50% coverage ate laboratory identification criteria observed

v= EOS spectrum conforming to laboratory least 20 unfolded or overlapped gnd squares <5% holes or opaque areas P B C ' M i >5u identification criteria observed Chrysotile i AMPHIBOLES I Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix 1 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003060036

NYC-WTC_000204256