NYC-WTC_000201773

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet j Client Name: NYC BOE Volnme (liters): 1840 Lab Group #: 7021 Filter Type / Filter Area: MCE 385 Lab Sample#: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 . GRID BOX: Magnification: 2O,OOGZ HGMilD: " Accelerating Voltage: lOOKeV # Grid Openings: 4 Analysis Date: 3/10/02

Analysis Performed By: MARK PEYSAKHOV “

GO. Structure Structure Type -Length ID of Structure N or A EDS No / (Nonadb F B G .M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elenients)i

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Strutt = >0.5)1 .>5:1 AspeefRatio Grid acceptance: i - : Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped orfolded Totals Iaborato7 identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p ■V=EDS spectrum conforming to laboratory holes or opaque areas — identification criteria observed Chrysotile I: AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Custer (>3 Intersections) : ' Anthophyllite Non-Asbestos M = Matriy it ; . Tremolite I Actinolite 7 Non-ldentified NSD = No Structures Detected :

CITY_21MC100_003269079

NYC-WTC_000201773