NYC-WTC_000201457

NYC 9/11 Public Portal Document

TEM Asbestos fairlCount Sheet Client Name: NYC BOE Volume (liters): 1840 Lab Group #: 7431 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/16/02

Analysis Performed By: . MARK PEYSAKHOV

GO. . Structure Structure Type Length ID of Structure N or Y EDS (Nonadb No B C M >=05 p >=5p Chrys Amphibole Nbn.asb Ambig/ND No Coord <5p Elements)

a-

' I

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance: <= Positive diffraction pattern properties conforming to ■ undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 7= EDS spectrurTi conforming to laboratory holes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES j Amphibole F = Single Fiber ■ Amosite ' B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) j Anthophyllite j Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

NYC-WTC_000201466