NYC-WTC_000188995

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1952 Lab Group #: 5904 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 10 Grid Opening Size: 0.01124

Client Sample #: 10 Area Examined: 0.04496 mm-

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

Analysis Performed By: /1-) Cr- MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 p ■=5iJ Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

n 5 7 A

Struct = > 0.5 p _> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded or overtapped grid squares <5% holes or opaque areas F B c M >5u identification criteria obsenzed Chrysotile .amphiboleF^ Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbesms Tremolite M = Matrix Non-Identifled Actinolite NSD = No Structures Detected

CITY_21MC100_003083284

NYC-WTC_000188995