TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1944 Lab Group #: 5897 Filter Tvpe / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 3 Area Examined: 0.04496 mm‘

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/15/01

Analysis Performed By: MICHAEL GORYCKJ

GO. Structure Structure Type Length ID of Structure N or 'I EDS (Nonadb No F B j C M >=05 u Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements) , T I fC? 2^0 J AjP ‘I

'7 c-f

H I Struct = > 0.5p >53 Aspect Ratio Grid aoceptancs: = Positive diffraction pattern properties conforming to <50% undissolved filter, ovedapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% [ F B C M i >5u •/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chiysoiile • AMPHIBOLES , Amphibole F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix j Non-Identified ' Actinolite NSD = No Structures Detected

CITY_21MC100_003106443

NYC-WTC_000185360