NYC-WTC_000203483

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1805 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm= Lab Sample #: 14 Grid Opening Size: 0 01124 Client Sample #: 16 Area Examined: 0 04496 mm-

GRID BOX: GRID ID: ( /m 1/A Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Photo No (from 1 in 5 asbestos containing samples) Gnd acceptance Struct = > 0 5p > 5.1 Aspect Ratio Totals <50% undissolved filter, overlapped or folded y- Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification critena observed least 20 unfoloed or overlapped grid squares <5% F B C M >5|J '/= EDS spectrum conforming to laboratory holes or opaque areas Chrysotile identification cntena observed i AMPHIBOLES I Amphibole F = Single Fiber i Amosite I B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; Ambiguous C = Cluster (>3 IntersecbonsI Anthophyllite I Non-Asbestos Tremolite : M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003058153

NYC-WTC_000203483