NYC-WTC_000228873

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Clieat Name: NYC BOE Volnmc fitters): 1800 Lab Group 7723 Filter Type / Filter Area: MCE 385 Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mra^ GRID BOX: Magnification: 20,000 GRID IP: Accelerating Voltage: too KeV tf Grid Openings; 4 Analysis Date: 5/12/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID ot Structure N or V EOS No (Nanadb F B C >S05m ;>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5u Eternents) j

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Struct - > O.Su > 5.1 Aspect Ratio Grid acceptance: Positive diteto peftem properties contomiing to <50% undisaotved Alter, overlapped or folded Totals latjora!O7 identification criteria observed <10% partculate coverage >50% coverage ate least 20 unfolded or ovettapped grid squares <5% F B C M ; >5u ■<1- EDS spectrum conforming to iatsoratory doies or opaque areas Identification criteria observed Chrysotile amphiboles " Amphibole F = Single Fiber Amosite B ' Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite Non-AsbesWs Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Delected

CITY_21MC100_002901826

NYC-WTC_000228873