NYC-WTC_000200947

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1840 Lab Group #: 7766 Filter Type / Filter Area: MCE 385 mm* Lab Sample #: 8 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm- GRID BOX: Magnification: .20,000 GRID ED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/16/02

Analysis Performed By: mark peysakhov

GO. Structure | Structure Type Length ID of Structure Nor N EDS (Nonadt No M >=05 J >=51J Chrys Nonasb Ambig/ND No Coord 0 <5p Amphibcle Elements)

11 I Struct = > 0.pg >5:1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undissolued filter, overlapped or folded Totals laboratory identification criteria observed . <10% particulate coverage.>50% coverage ate

EDS spectrum conforming to laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas' ZZZZZZZZIZ Chrysotile B C M >5u

A'MPHIBOLES Amphibole i F = Single riser Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ■ C.= Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC1OO_O11275295

NYC-WTC_000200954