NYC-WTC_000228904

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 7741 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 •Client Sample #: 03 Area Examined: 0.04496 mm* GRID BOX: Magnification: 20 OOO GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS (Nonacfb No F B C M >-05 u >=5p Ctirys AmphSxJte Nonasb Ambig.W No Coord <5m Eiements}

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I' -"-I i'"r Struct = > 0.5u =■ 5; i Aspect Ratio Grid aoeplanca: Positive diffraction pattam properties corfermmg to <50% undissolved filter, ovwlappea or folded Totals laboratory Identitlcation criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overiappec grid squares <5% F B C M >5|j • 1/- EDS spectrum conforming W laboratory holes df opaque areas Identification criteria observed Chrysotile ' AMPHIBOLES I Amphibole F = Single Fiber Amosite S = Bundle {<3 fibere <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Mattw Actinolite Non-Identified NSD - Mo Structures Detected

CITY_21MC100_002901874

NYC-WTC_000228904