NYC-WTC_000229151

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1848 Lab Group #: 7922 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124

Client Sample #: 09 Area Examined: 0.04496

GRID BOX: Magnificatioc; 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or < EDS No Nofiasb Ambig/ND {Nonadb F B C M ■>^S ij~| :>=5p Ch^s Amphitjote No Coord <5p Etements)

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Struct = > O.Sp > 5:1 Aspect Ratio Grid acceptance; Positive diffraction pattern properties confotming to <50% undissolved filter, overtapped or folded Totals laboratory identtfication criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5tj EDS spectrum conforming to laboratory tides or opaque areas (dentofen criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Su.idle {<3 fibers <1 fiber damefer apart Crocidolite Ambiguous C = Cluster {>3 IntersecSons) ; Anthopriylllte Non-Asbestos Tremolite M 5 Matrix ; Actinolite Non-Identified NSD= No Structures Dsieded

CITY_21MC100_002902288

NYC-WTC_000229151