NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM AsbestoslairiCountSh^ Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.24728 mm* GRID BOX: Magnification: 20,000 GRID ID: Mg Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

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

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Hhoio No (from 1 .n 5 asbestos containing samples I Grid acceptance: Struct = > O.cu > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Positive diffraction pattern properties conforming to <10% particulate coverage >6C“c coverage ate lartoratory identification criteria observed least 20 unfolded or overlapped gnd squares <5% f i F i B I C I M j >5p holes or opaque areas L EDS spectrum conforming to acoratc;/ identification catena ooserved i Chrysotile ! i F = Single Fiber B = Sunale ku Sbers <1 fiber diameter apart AMPHIBOLES Amosite Crocidolite ) ! Amphibole i Ambiguous I r ! C = Cluster >2 Intersections) Anthophyllite ) \on-.Ashestos ) Tremolite M = Matrix I Non-Identified , Actinolite NSD = No Structures Detected

CITY_21MC100_0 03069330

NYC-WTC_000202865