TEM asbestos analysis data sheet, Sep 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) CountSheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8828 Filter Type / Filter Area: MCE 385 mm- Lab Sample 6 Grid Opening Size: 0.01124

Client Sample #: 06 Area E.vamined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV .// Grid Openings: 4 Analysis Date: 9/10/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or '/ EDS No (Nonadb F B C M >=05 M >=5jj Chrys Amphibole Nonasb Ambig/ND No Coord <5pi Elements) / xOz

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Struct = > 0.5p .>5:1 Aspect Ratio Grid acceptance: '/= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped 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 V= EDS spectrum conforming Io laboratory holes or opaque areas identification criteria observed Chrysotile : AMPHIBOLES j Amphibole F = Single Fiber Amosite 5 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-Identified Actinolite NSD = No Siructures Detected

CONFIDENTIAL, CITY_21MC100_003422040 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175297