NYC-WTC_000202299

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOB Volume /liters): 1805 Lab Group #: 9090 Filter Type / Filter Area: MCE 385 Lab Sample #: 14 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 nW GRID BOX: GRID IP: 7' ) /m Magnification: Accelerating Voltage: bO 000 100 KeV # Grid Openings: 4 Analysis Date: 11/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure iype Lengthi 1 iDofStructere N or y | EDS I No F I B I C I M >=05 p. >=5|j I Chrys Amphibole Nonasb iNo j , Coord <5p Eiements) ~ ! I

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Photo No ;trom 1 in □ asbestos containinc samples) ~~ “ Grid acceotance: fruH - ,5p A 5.1 Aspect Ratio <50% undissoived filter, overlapped or folded Totals y = Positive diffraction pattern properties contorming to <10% particulate coverage >50% coverage ate , laboratory identification criteria obssr/ed least 20 unfolded or overlapped grid squares <5% F B C M I >5p ■7= EDS spectrum conforming to laboratory holes or opaque areas Chrysotile identification criteria observed AMPHIBOLES Amphibole r = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified NSD = No Structures Detected Actinolite .1.

CITY_21MC100_011276421

NYC-WTC_000202299