NYC-WTC_000200915

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume niters): 1880 Lab Group #: 7739 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 04 Area Examined: 0.04496 GRID BOX: Magnification: 20 000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/14/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or A EDS No >=05 p Amphibole Nonasb Ambig/ND (Wonadb F B C M' Chrys Elements) No Coord

-t- I

i Struct “> 0.5,u >5:1 Aspect Ratio Grid acceptance: ’/= Positive diffraction pattern properties conforming to undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate ieast.2O unfolded or oveitapped grid sguares <5% F B C M I >5ij ■ EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES ' Amphibole Y F = Single Fiber Amosite ) ■ 3 = Bundie (<3 fibers <1 fiber diameter apart Crocicolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite 1 Non-Asbestos i Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Delected

CITy_21MC100_0112-7 52 47

NYC-WTC_000200918