TEM asbestos air analysis log, Sample 6, Aug 2002

NYC 9/11 Public Portal Document J

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 8760 Filter Type / Filter Area: MCE 385 Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496 mm^ GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Analysis Date: S/25/02

Analysis Performed By: ROMAN PEYSAKHOV

‘GO Structure Structure Type Length ID of Structure N or N EDS (Nanadb No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <6p Elements)

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Struct = > 0.5(j >5:1 Aspect Ratio Gnd acceptance: V= Positive diffraction patlem properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M ^5u. 7= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSC = No Structures Delected

CONFIDENTIAL, CITY_21MC100_003430557 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175194