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

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NN’C BOE Volume filters): 1920 Lab Group #: 7351 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 mm'

GRID BOX: Magnification: 20,000 GRIDID: Accelerating V'oltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: _ MICHAEL GORYCKI

GO Structure I StructureTy^ Length ID of Structure N or 7 EDS No ■ F Nonedb B C M >=05 |j Chrys Amohibole Nonasb Ambig/ND Elemehls) No Coord <51J

I //____ V y •=■1' ¥ I I I j

F

I__ i 1 r I I ( ! I 1 J__ L J i I i 1----- 1—r i ’ I I I

i—1 Struct = > O pp > 5:1 Aspect Ratio Grid acceptance

Positive difiraction pattern properties conforming tc <50% undissolvea filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <6% [ F i' B pc ! I -M >5u 7= EDS spectrum conforming to laboratory holes or opaque areas identificaaon criteria observed Chrysotile ■AMPHIBOLES Amphibole ] F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified | NSD = No Structures Delected Actinolite i I

CONFIDENTIAL, CITY_21MC100_0 03459963 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179558