NYC-WTC_000200410

NYC 9/11 Public Portal Document

TEM Asbestos (airV Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8012 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm-

GRID BOX: GRID ID: 4^4^ Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 6/8/02

Analvsis Performed By: f . ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 4 / EDS '(Nonadb -No ■ F B C M >=05 p :>=5iJ Chrys Amphibole Nonasb i Ambig/ND Elements) No Goord <5p i

Cf I

t " Struct = > 0;5n -> 5:1. Aspect Ratio/ . Grid acceptance: 4-= Positive diffraction pattern properbes conforming to ' "^0% undissolved filter, overlapped or folded Totaks laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >5p r - 4= EDS spectrum conforming to'laboratory holes or opaque areas ' identification criteria observed. Chrysotile I AMPHIBOLES Amphibole . F = Single Fiber- Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster !>3 Intersections) I Anthophyllite Non-Asbestos I Tremolite .M = Matrix Non-Identitled i Actinolite ■ NSD = No Structures Detected

NYC-WTC_000200425