TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: WC BOE Volume (liters): 1S 16 Lab Group #: 6720 Filter Type / Filter Area: MCE 385 mm - Lab Sample Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDED: ■Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/18/02

Analysis Performed By: MARK PEYSAKHOV

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

3

i

Struct = > 0.5u > 5:1 Aspect Ratio Grid acceptance: \= Positive diffraction pattern properties conforming to <50% undissoivec filter, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% B I C I M I >5u v'= EDS spectrum conforming to laboratory i F hoies or opaque areas identification criteria observed Chry'sotile | i i AMPHIBOLES Amphibole J = Single -ibe," Amosite E = Bundle (<3 fibers <1 'fiber diamete.r apart Crocidolite Ambiguous j C = Cluster (>3 intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-Identified ■ Actinolite NSD = No Structures Detected . .. .J

CITY_21MC100_0 03103290

NYC-WTC_000183816