TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

z TEM Asbestos fair) Count Sheet Client Name: Nvr BOE Volume (liters): 1944 Lab Group #: 5975 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 9 Grid Opening Size: 0.01124

Client Sample #: Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/27/01

Analysis Performed By: QP ROMAN PEYSAKHOV

C-0. Structure Structure Type Length ID of Structure N or v' EDS I'Nonadb No F B C M >=05 u :>=5p Chrys | Amphibole Nonasb Ambig/ND No Coord <5u Elements)

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ri j j i i 1 tj I i I I

i ! Struct = > 0.5)1 >5:1 Aspect Ratio Grid acceptance; y= Positive diffraction pattern properties conforming to <^0% “"dissolved Niter, overlapped or folded Totals :10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F B C M >5y EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES i Amphibole ) F = Single Fiber ! Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ! C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos | i Tremolite M = Matrix Non-Identified I Actinolite I. NSD = No Structures Detected

CITY_21MC100_003106754

NYC-WTC_000185514