NYC-WTC_000202580

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume niters): 1920 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: F Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKFIOV

GO. Structure Structure Type Length ID o.f Structure Norv EDS (Nonadb No F B C M >=05 u :>=5|J Chrys Amphibote Nonasb Ambig/ND i No ' Coord Bementsj <5|J

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'' Photo No. (trom 1 n b asbestos containing samples) Srid acceptance: Struct = > O.pp > 5;') .Aspect Ratio <50% undissolved filter, overlapped ar folded Totals y= Positive diffraction pattern properties conforming to <19% particulate coverage >50% coverage ate laboratory identification criteria observed least 29 unfolded or overlapped grid squares <5% F B C i M •5p holes or opaque areas EDS spectrum confcrming to laboratory identification criteria observed Chrysotile i AMPHIBOLES I Amphibole. F = Single Fiber Amosite i B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I

C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix Tremolite NSD = No Structures Detected ; Actinolite Non-Identified i _________________ i__-. tjzj ti CI t’y_2 IMC10 0_0 0 3 2 7’3 6 77

NYC-WTC_000202580