NYC-WTC_000229059

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters): 1800 Lab Group 7858 Filter Type / Filter Area: MCE 385 mm- Lab Sample#: 10 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRIDID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure M or V EDS No (Nonadb F B C M ’sOSp ' I >=5ij Chrys Amphibole Nonasb AmbigZNO No Coord <5m Elements)

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Struct = > 0.5|j > S: I Aspect Ratio Grid acceptanw Positive dittoion pattern properties conforming to <60% unaissotwed filter, owriappeo or tolded Totals <10% particutate coverage >50% coverage ate laboratory identitotion criteria observed least 20 unfolded or overlapped grid squares <5% F B C M ! EDS spectrum confortning to laboratory holes or opaque areas identification criteria observad Chrysotile AMPHiBOLES Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguou-s C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I T T remolile M: Matrix Actinolite Non-Identified NSO * No Structures Detected

CITY_21MC100_002902123

NYC-WTC_000229059