NYC-WTC_000193291

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 8137 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0.01124

ClienlSample #: 06 Area Examined: 0.04496 mnr

GIMP BOX: Magnification: 20,000 GIUD ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: MARK PEYSAKHOV

30. Structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb F B C M >=05 M Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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 obsenred <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M v'= EDS spectrum conforming to laboratory holes or opaque areas identification criteria obsenred Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diametar apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix - Non-Identified Actinolite N3D = No Structures Detected

CITY_21MC100_003094443

NYC-WTC_000193291