TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Coaat Sheet Client Name: NYC BOE Volume nhersi. Lab Group #: X Lifter Type ; Filter Area: Lab Sample #: Grid Opening Size: O.( / I ! Client Sample #: T04 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: i 00 KeV # Grid Gpymings; 4 Analysis Date: 2/25/02

Analysis Performed By: MARK PEYSAKHOV

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

..4.

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance:

4= Positive diffraction pattern properties conforming to <50% undissoived filter, overlapped or folded Totals labcratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F F B C I M I >5p EDS spectrum conforming to laboratory holes or opaque areas L identification criteria observed Chrysotile AN4PH1BOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster Ac Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003103490

NYC-WTC_000183910