NYC-WTC_000195049

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1920 Lab Group #: 6828 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: Maanification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/26/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS No (Nonadb F B C M >=05 p >=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) i

5C. I

Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: 7= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals laooratory identification criteria obsenjed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% r 7= EDS spectrum conforming to laboratory holes or opaque areas I ______ P B i C ' M j identification criteria observed Chrysotile i AMPHIBOLES Amphibole i P = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i T remolite M = Matrix Actinolite Non-Identified NSD = 70 Structures Detected

CITY_21MC100_0 04153175

NYC-WTC_000195049