NYC-WTC_000229301

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volame (liters): 1800 Lab Group #: 8136 Fiber Type / Filter Area; MCE 385 mm’ Lab Sample #: I Grid Opening Size; 0.01124 CUent Sample#; 03 Area Examined: 0.04496 mm’

GRID BOX: Magnification; 20 55S GRID ID: Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 6/17/02

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length IDolStructire Nor ’ll EDS No Afflbig*® (Nonadb F B C >=05 p ' '>=5p Chrys Ampfiibote Naisb No Coord <5p Elements)

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Struct = > 0.5g > 5; I Aspect Ratio Grid acceptance: <= Positive diffraction pattern properties eontoiming to urfotssoived filter, overtotjed or folded Totals lafioratoiy identitetron enteria observed <10% partcutols coverage >50% coverage ate least 2C unloWed or overtopped grid squares <5% F B C M >5v EDS spectrum conforming to laboratory holes or opaque areas identifictoton ertena observed Chrysotile AMPHIBOLES Amphibole Fl angle Fiber , Amosite f 8 = Bundle (<3 fibers <1 fiber diameter apart ‘ Crocidolite Ambiguous C = Cluster <>3 inteisacfions) ' Anthophyllite Non-Asbestos , Tremolite Matrix Non-ldentificd ! AcBnolite NSO = No Structures Detected L,

CITY_21MC1OO_OOO491916 NYC-WTC_000229301