NYC-WTC_000228860

NYC 9/11 Public Portal Document

TEM Asbestos (airl Count Sheet Client Name: NYC BOE Volume (liters); 1800 Lab Group #: 7717 Filter Type / Filter Area: MCE 38S Lab Sample #; II Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined; 0.04496 mnv

GRID BOX: Magnification: 20 000 GRID ID; Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 5/11/02

Analysis Performed By: aJ ROMAN PEYSAK.HOV

GO. [ Stnjcture Structure Type Length ID of Structure N or V EDS No (Monsdb F B C >=05 u : '=5p Chrys Amphibole Nonasb | Ambig/NO r /TJ No Coord „ <5p i glements)

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Struct = >O.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffracBon pattern properties conforming to <50% undissofwea filter, overlapped or folded Totals iabofator> identification erileria observed <10% particulJte coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M EDS spectrum conforming to laboratory notes or opaque areas identitication criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Ctiister (>3 Intersections) Amtiopihyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD < No Structures Detected

CITY_21MC100_002901812

NYC-WTC_000228860