NYC-WTC_000189087

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client .Name: NYC BOE Volume (liters): 1944 Lab Group #: 5948 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 18 Grid Opening Size: 0.01124 Client Sample #: -Area Examined: 0.04496 mm*

GRID BOX: Magnification: 20,000 GRIDIP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/21/01

Analysis Performed By: __ a ____ /h ( MICHAEL GORYCKI

GO. Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F B C >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND Elements) C- ' Coord <5p

zzsz ME / py A 1

Struct = > 0.5p 5 1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolveo filter, overlapped or folded Totals laboratory identification critena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory holes 01 opaque areas identification criteria observed Chiysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apan Crocldoilte -Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix N on-Identified Actinolite NSD = No Structures Delected

CITY_21MC100_003083438

NYC-WTC_000189087