NYC-WTC_000212575

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet (?licnt Name: NYC BOE Volume (liters): 1920 Lab Group #: 7786 Filter Type / Filter Area: MCE 385 Lab Sample #: S Grid Opening Size: 0.01124

i Client Sample #: 08 Area Examined: 0.04496 mm-

( IRID BOX: A Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV ti- Grid Openings: 4 Analysis Date: 5/18/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure N or v EDS (Nonadb No F B C M >=05Ti >=5p Chrys Amphibole Nonasb Ambig/ND Elements') { No Coord <5p 4- . _ A

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Struct - > O.Og > 5:1 Aspect Ratio Grid acceptance: /= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals afcoratory identification critena otrserved <10% particulate coverage >50% coverage ate least 20 unfolded or oveifapped grid squares <5% F B C M >5p v= EDS spectrum conforminc tc laboratory holes or opaque areas dentification critena observed Chrysotile AMPHIBOLES Amphibole - - Single Fiber Amosite : - Bundle (<3 fibers <1 fiber lie meter apart Crocidolite Ambiguous ? - Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite ‘v1 = Matrix Non-ldentified Actinolite 'ISO = Mo Structures Detecteri

CITY_21MC1OO_OO2867231

NYC-WTC_000212575