NYC-WTC_000204261

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1832 Lab Group #: 7348 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 8 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm-

GRID BOX: |0^f Magnification: 20,000 GRID ID: 110/? 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 V EDS (Nonadb No F B C M 7^05^5 >=5m Chrys Amphibole Nonasb Ambig/ND (J— No Coord Elements) <5m I '/

4 t

LJ

Struct = > 0.5,u >5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B c M I ’Su \'= EDS spectrum conforming to iaboratcny holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersectionst Anthophyllite Non-Asbestos M = Matrix NSD = No Structures Detected Tremolite Actinolite Non-Identified rc CITY_21MC100_003060041

NYC-WTC_000204261