NYC-WTC_000223472

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NT'C BOE Volume (liters): 1899 Lab Group #: 6021 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRIDED: 3^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/3/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor'/ EDS No (Nonadb F 8 C M >=05 |J >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5u Elements)

T— If

30

Struct = > 0.5p _> 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 least 20 unfolded or overlapped grid squares <5% F B C M >5m V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 tibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite । Non-Asbestos Tremolite M = Matrix Actinolite I Non-Identified I NSD = No Structures Detected

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NYC-WTC_000223472