NYC-WTC_000227221

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voliime (liters): 1800 Lab Group #: 7000 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0 01124 Client Sample #: 07 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/9/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No Nonasb (Nonadb F B C M >=05 p : =5p Chrys Amphibole Ambig/ND Elements) No Coord <5m

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Struct = > 0.5p > 5.1 Aspect Ratio Grid acceptance: •/= 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 M >5u ■/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite ' Non-Identified NSD = No Structures Delected

CITY_21MC100_002898494

NYC-WTC_000227221