NYC-WTC_000229206

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fliters): 1856 Lab Group #: 7988 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 09 Area Examined: 0.04496 GRID BOX: Magnification; 20 BEE GRIP ID; Accelerating Voitaee: 100 KeV # Grid Openings: 4 Analysis Date; 6/6/02

Analysis Performed By; MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 4 EOS No {Nonadb No: Coord F B C M >=05 y "n <Sm >=5p Chrys AmphibOte Nonasb AnWNO Elements)

—g— ' J —<- A

Struct = > 0.5y > 5; 1 Aspect Ratio Grid acceptance: 4= Positive diffraction pattern properties conforming to <50% undtooiwd SBer, wertapped or feiiBd Totals laboratory KJentilication criteria observed <10% particuiate (average >50% (average ale least 20 unfoWed or overiapped grid squares <5% F B C M >5!j EOS spectrum conforming Io laboratory holes or opaque areas WenttScatfon criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle {<3 fibers < 1 fiber diameter apart Cr-ocidotite Ambiguous C = Cluster (>3 Intersections) I Anthophyliite Non-Asbcstos I Tremolite M = Matrix Actinolite Non-Idcntified NSD = No Structures Detected

CITY_2IMCl00_000491703 NYC-WTC_000229206