NYC-WTC_000218071

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 6852 Filter Type / Filter Area: MCE 38 Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: U.04496 miT

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeY # Grid Openings: 4 Analysis Date: 2 28/02

Analysis Performed By: cP ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure \ or \ i EDS No >=05 p Amphibole I NonasL i Ambig/ND i (Ncnado F B C M >=5)J Chrys No Coord <5p Elements! ---- „—4-4

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Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <6% EDS spectrum conforming to laboratory holes or opaque areas ______ LI Chrysotile i B C ; M identification criteria observed AMPHIBOLES Amphibole p = Single Fiber i I Amosite Crocidolite Ambiguous B = Bundle (<3 fibers <1 fiber diameter apart C = Cluster (>3 intersections) Anthophyllite Noil-Asbestos T remolite M - Matrix Actinolite Non-Identified , NSD = No Structures Detected

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