NYC-WTC_000229287

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1824 Lab Group #: 8108 Filter Type / Filter Area: MCE 385 Lab Sample #'• 5 Grid Opeping Size; 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm* GRIP BOX: Mafinificatigm 20,000 GRID.m; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 6/15/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length IQ of structure N or V EDS No P^onadb F B C M >=05 p >=5p Chrys AmphXMte Nonasb AmbigW No Coord <5y Etements) Z ,7^

n, -^^Sz

Struct = > 0.5(1 >5,1 Aspect Ratio Grid acceptance: 5/= Positive difiracboo pattern properties conforming to *5^ **• ortoldsd Totals laboratory identificafcn criteria observed <10% partcutate coverage >50% ooverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5(1 EDS Spectrum conformirrg to laboratory holes or opaque areas iaentificatsoo criteria observed Chrysotile ■ AMPHIBOLES i Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (’3 intersections) ' Anthoprtyltite Non-Asbestos Tremolite M = Matra Non-ldentified Actinolite NSD = No Structures Detected

CITY_2IMCl0 0_0 00491872 NYC-WTC_000229287