NYC-WTC_000201062

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: . NYC BOE Volume (liters): 1840 Lab Group #: 7832 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/22/02

Analysis Performed By: ROMAN PEYSAKIIOV

GO. Structure Structure Type Length ID of Structure NorO EDS , -No (Nonadb F B C M >=5p Chrys Amphibole Nonasb Amfaig/ND Elements) No Coord <5p

1/'

/■ ETEZi

•Striicr = > O.Sn >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to ^50%'undissclved filter, overlapped or folded Totals laboratory identifieation criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ’Em v/= EDS spectrum conforming to laboratory holes oropaque areas identification criteria observed; Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle j<3 fibers <1 fiber diameter apart Crocicolite Ambiguous C = Cluster j>3 Intersections) Anthophyllite Non-Asbestos M - Matrix I Tremolite Actinolite Non-identified NSD = No Structures Detected

CITY_21MC100_0112'7 5360

NYC-WTC_000201065