NYC-WTC_000228320

NYC: 9/11Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 2032 Lab Group #: 6354 Filter Type Z Filter Area: MCE 335 min- Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined; 0.04496 mm- GRIDBOX: Magnification: 20,000 GRID ID: 7^ Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 1/17/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length 10 of Structure N or v' 60S No (Nonadb F B C M >*05 p :>=5p Chrys AmphitMie Nonasb AmbigyND No Coord <Sp Elements) 1

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4 I J Struct • > 0.5p > 5:1 Aspect Ratio Gnd acceptance: v= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identtficatron crrtena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M ’5m EDS spectrum conforming to laboratory holes or opaque areas identification criterra observed Chrysotile amphiboles' Amphibole F = Sintfe Fiber Amosite B - Bundle {<3 fibers <1 fiber diameter apart Crocioolite Ambiguous C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite MsMalrw Actinolite Non-ldentified

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