NYC-WTC_000214621

NYC 9/11 Public Portal Document

TEMAsbestoslairlCmintSheet Client Name: NYC BOE Volume (liters’): 1928 Lab Group #: 7989 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/6/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No (Nonadb F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/NO No Coord <5p Elements)

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Struct = > 0.511 .>5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to ^50% undissof/ed filter, overlapped or folded Totals laboratoty identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u ’/= EDS spectrum confomriing 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) I Anthophyllite Non-Asbestos ! Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_000463125 NYC-WTC_000214621