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): 1832 Lab Group 6648 Filter Type / Filter Area: MCE 3S5 mnr Lab Sample #: IJ Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.0^496 mm- GRID BOX: Magnification: 20,000. GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/12/02

Analysis Performed By: ROMAN PEYSAKHOV

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

f rs Y II

Sb'uct = > 0.5n > 5:1 Aspect Ratio Grid acceptance: N= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria oosenred <10% partculaie coverage >50% coverage ate

Y= EDS spectrum conforming io laboratory least 20 unfolded or overtapoad and squares <5% f j F I B i C i M >5l holes or opaque areas identification critena observed Chrysotile i AMPHIBOLES Amphibole i F = Single Fiber Amosite 3 = Bundle {<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous I C = Cluster ;>3 intersections) Anthophyllite Non-Asbestos ' M = Matrix Tremolite Actinolite i Non-Identified i NSu = No Structures Detected I I i

CITY_21MC100_003103154

NYC-WTC_000183766