TEM Asbestos air sample results, NYC BOE, Mar 2002

NYC 9/11 Public Portal Document

TEMAsbestosXairL Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 6887 Filter Type / Filter Area: ■MCE 385 mm- Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #: 08 Area Examined: 0.04496 mm-

GRID BOX: Magnitlcation: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 ■Analysis Date: 3 1/02

■Analysis Performed By: MARK PEYSAKHOV

GO j Structure Structure Type Length ID of Structure N or EDS (Nonadb No F B C M >=05 p i >=5p Chrys Arrphibote NonasD Ambig/ND No Coord <5m I Elements)

•C* I ' C. /

J_ t

Struct = > U.5|j > S: I Aspect Ratio Grid acceptance:

M'= Positive diffraction pattern properties conforming to 50% undissolved filter, overlapped or folded Totals i0% paniculate coverage! >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% F I B 1 C M i >5p v = EDS spectrum conforming to laboratory holes or opaque areas —i------ 1---- ------------ identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos M = Matrix NSD = No Structures Detected Tremolite Actinolite , Non-Identified I I m CITY_21MC1OO_OO31O2182

NYC-WTC_000183153