Asbestos fiber analysis results, H.S. of Economics & Finance, Apr

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NT’C BOE Volume fliters): 1920 Lab Group #: 7351 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124

Client Sample #: 07 Area Examined: 0.04496 mm-

GIUD BOX: dSrZl Magnitication: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MICHAEL GORYCKl

GO. Structure Structure Type Length ID of Structure Nor 9 EDS (Nonadb No F B C >=05 J Ctirys Amphibole Nonasb Ambig/ND No Coord <5U Elements) 'I H7 ~ •7

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Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance:

4= Positive diffraction pattern propeties conforming to <50% undissolved filter, overlapced or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate

4= EDS spectrum conforming to laboratory identification C'iteria observed least 20 unfolded or overlapped grid squares <5% holes O' opaque areas Chrysotile PP C M >5p

.AMPHIBOLES Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 ‘iber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite \ Non-Asbestos Tremolite M = Matrix j Non-Ideniified i Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_0 03459954 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179549