TEM asbestos air sample results, NYC BOE, Dec 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1936 Lab Group #: 6229 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 6 Area Examined: 0.04496 mm-

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 Stnicture N or 9 EDS No (Nonadb F B C M >=05 P i>=5p Chrys I Amphibole Nonasb Ambig/ND No Coord Elements;

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Struct = > y.Sp > 5 I Aspect Ratio Grid accealance:

y = Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ale

EDS spectrum confcrming to laboratory least 20 unfolded or ovenapped gnd squares <5% Ff B C M >5u holes or opaque areas identification cnteria oDservec Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter aoart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Non-Asbestos T remolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003105195

NYC-WTC_000184486