NYC-WTC_000188990

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: m'C BOE Volume (liters): I960 Lab Group #: 5904 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 4 Area Examined: 0.04496 mm-

GRID BOX: JZiCi- Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/17/01

Analysis Performed By: A (C MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or y EDS No (Nonadb F B C M I ’=05 M >=51J Chrys Amphibole Nonasb AmbigZND No Coord I Elements)

ZZ-Z^ yVSiZ (I

Struct = > 0.5u _> 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

7= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B I C M I identification criteria observed Clirysotile ^AMPHIBOLES Amphibole F = Single Fiber J 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_OO3O83278

NYC-WTC_000188990