TEM asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume (liters): 1952 Lab Group #: 6229 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 19 Grid Opening Size: 0.01124 Client Sample #: 19 Area Examined: 0.04496 rnm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/30/01

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or y EDS (Nonadb NO F B C M >=05 u >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

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Struct = > 0.5p > 5 I Aspect Ratio Grid acceptance: y = Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Tot;! Is laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded ar overlapped grid squares <5% F B i C M >5U /= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B - Bundis (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M - Mairix Non-Identified Actinolite NSD Me Slructures Detected

CITy_21MC100_003105208

NYC-WTC_000184498