TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet Client Name: NYC BOE Volume /liters): 1816 Lab Group #: 6788 Filter Type / Filter -Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 10 ■Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV t? Grid Openings: 4 Analysis Date: 2,f23/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor 'J EDS No (Nonadb F B C M >=05 pi Chrys Amphibole Nonasb Ambig/MD No Coord <5p Elements)

U.

;A:

Struct = > 0.5(1 >5:1 .Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals <10% particulale coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overiapped grid squares <5% v= EDS spectrum conforming to laborato^ loentification critena observed holes or opaque areas Chiysotile j LLLLLS M iI >5p .AMPHIBOLES Amphibole r = Single Fiber Amosite a = Bundle {<3 fibers <1 fiber diameter apart Crocidolite .Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Matrix Non-Idennfied j NSD'= No Structures Detected Actinolite J CITY_21MC100_003103411

NYC-WTC_000183855