NYC-WTC_000221766

NYC 9/11 Public Portal Document

TEM Asbestos Count Sheet Client Name: NT'C BOE Volume (liters): 1840 Lab Group #: 7444 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: 4/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or '/ EOS No (Nonadb F B C M >=05 y :>=5(j Chrys Amphibole Nonasb Ambig/ND loord <5m Elements) 472 j

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

'J= EDS spectrum conforming io laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas J B I C .M I >5p identification critena observed Chrysotile ■AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = .No Structures Detected

CITY_21MC100_002888656

NYC-WTC_000221766