NYC-WTC_000188954

NYC 9/11 Public Portal Document

TEMA^bestoslairlCountShe^ Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 5897 Filter Tvpe / 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: 6 Pc Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: Pl MICHAEL GORYCKI

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

7 6*

it

Struct = > 0.5p .> 5:1 Aspect Ratio Grid acceptance: a/= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5|J 'I- EDS spectrum conforming to laboratory holes or opaque areas identification chtena observed Chrysotile ' AMPHIBOLES 1 Amphibole F = Single Fiber Amosite e = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Identiiled Actinolite NSD = No Structures Detected

CITY_21MC100_003083226

NYC-WTC_000188954