NYC-WTC_000207396

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: -8022 Filter Type / Filter Area: MCE 'SSSmm^ Lab Sample #: 11 Grid Opening Size: 0;01124 , Client Sample #: 11 Area Examined: 0.04496 mm’ . GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analvsis Date: 6/9/02 ‘

Analysis Performed By: MARKPEYSAKHOV ••

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

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Struct = > 0.5p .> 5; 1 Aspect Ratio Grid acceptance: a/= 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 oroveriapped grid squares <5% F B C M >5m ■' A- EDS spectrum conforming to laboratory ' holes or opaque areas identification criteria 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_003015122

NYC-WTC_000207396