TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 6943 FUter/Tyx)ej/j2ilte£^\reag^ MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0,01124

Client Sample #: 07 Area Examined: 0,04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: AcceleratingV 011 age: 100 KeV # Grid Openings: 4 AnalysisJJat^ 3/6/02

Analysis Performed By: MARK PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or V EDS (Nonadb \ No F B C M >=05 p : ^5m Chrys Amohibole Nonasb Ambig/ND No Coord <5p Elements) '

a.

Struct - > 0,5p > 5:1 Aspect Ratio Grid acceptance:

7= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfoded or overlapped grid squares <5% ) F ! B i C M >5u v'= EDS spectrum conforming to labcraiory doles Of ODaGue areas / identification criteria observed Chrysotile i AMPHIBOLES Amphibole 1 ' F = Single Fiber Amosite B = Bundle i<3 fibers <1 fiber diameter span Crocidolite •Ambiguous i i C = Cluster ;>3 ,ntersectionsj Anthophyllite Non-Asbestos rreiTioiite M = Malrix Non-ldentified Actinolite NSD No Structures Detected

CITY_21MC100_003102304

NYC-WTC_000183229