TEM asbestos air count sheet

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE A'oiume (liters): 1920 Lab Gr()U[) #: 8760 Filter Type / Filter Area: MCE 385 mm- Lab^arnnle #: 15 Grid Opening Size: 0,01124 Client Sample #:I 15 Area Examined: 0.04496 rnm- GIUD BOX: Magnification: 20,000 GRIDID: ( Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02

Analysis Performed Bv: ROMAN PEYSAKHOV

GO. ' Structure Structure Type Length ID of Structure Nor V cDS No (Nonadb F B C >=05 p >=51J Chrys Amphioole Nonasb AmbigiND ttements’; I No Coord /I <5p 1 1

I i I !

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Struct = > 0.5u >5:1 Aspect Ratio Grid acceptance: nl = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C I M v= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C'=-Clusler(>3 Inlersections) Anthophyllite Non-Asbestos j Tremolite M = Matrix Actinolite Non-ldentified , NSD = No Structures Detected

CITY_21MC100_003033905

NYC-WTC_000199421