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): IS 16 Lab Group / 6749 Filter Type / Filter Area: MCE 3S5 nim- Lab Sample 17 Grid Opening Size: 0.01124 Client Sample #: 20 Area Examined: 0.04496 rnm’ GRID BOX: Magnification; 20.000 GRID ED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/20/02

Analysis Performed By: MARX PEYSAXHOV

GO. Structure Structure Type Length ID of Structure Nor / EDS i No (Nonadb I F B C M >=05 p Chrys Amphibole Nonasb Amtoig/ND No Coord <5u Elements) j ------------1

j i Struct = >0.5p >5;1 Aspect Ratto Grid acceptance; >/= Positive diffraction pattern properties conforming to <50% undissolved filler, overlapped or folded 'rotais laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfoided or overlapped grid squares <5% F I B j C j M j ’3u '/= EDS soebrum conforming to iaboratoty holes or opaque areas identification criieria ooserved Clirysorile AMPHIBOLES Amombole i r = Single Fiber Amosite S = Sundls (<3 fibers <1 fiber diameter apan Crocidolite j Ambiguous i C = Cluster (>3 i.nterseciions) Anthophyllite I Non-Asbesros i Tremolite M = Matrix { Non-IdenniTed ' Actinolite NSC = No Structures Detected L... 1

CITY_21MC1OO_OO31O335O

NYC-WTC_000183832