NYC-WTC_000229176

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume flitersl: 1800 Lab Group #: 7953 Filter Type / Filter Area: MCE 385 mn? Lab Sample #: il Grid Opening Size: 0.01 ] 24 Client Sample#: 13 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage; too KeV # Grid Openings: 4 Analysis Date: 6/4/02

Analysis Performed By; ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or V EDS Mo F B C >=05u I ;>=5p Chrys AmiWibole Nonasb Airtjijfl® jjr No Coord _ <514 ESemeftts)

/ES3Z

Struct ">0.5(1 >5:1 Aspect Rahn Grid acceptance: - M- Positive dtffractoi pattern properties conforming to <50% undlsaalved filter, overiepped w folded Tptals iaboratory identification criteria observed <10% particulsts coverage >50% coverage ate least 20 unfoWed or overtyped grid squares <5% F B C >5u EDS spectrum conforming Io laboratory totes or opaque areas iaentificaSan criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 0 s Bundle (<3 fibers <1 fiber diameter apart Croddolita Ambiguous C = Clustsr(>3 Intareedfonsl Anfiiophylllte ; Noa-Asbestos I Tremolite ! H = Matrix Actinolite j Non-tdeutified NSD = No StrucfL'res Delected

CITY_21MC100_002902362

NYC-WTC_000229176