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): 1832 Lab Group #: 6908 Filter Type / Filter Area: MCE 385 mm-^ Lab Sample #: 6 Grid Opening Size: 0 01124

Client Sample #: 09 Area Examined: 0.04496 mnC

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Volta2e: 100 KeV # Grid Openings: 4 AnalysisDate: 3/3/02

Analysis Performed By: MARK PEYSAKHOV

GO structure i Structure Type Length ID of Structure Nor \ EDS (Nonadb No Coord i No j F i B I C I M ^^052;^ ) ■=5|J Chrys Amphibote Nonasb Ambig/ND Elements) <5(j —--------- ---------------------- —i i ■1—i

A

--- j---- 1---- j. -t------- h

I

Struct = > O.Sp > 5:1 Aspect Ratio Gnd acceptance:

4= 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 unfolded or overlapped grid squares <5% F B C M >5u 2= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile .■AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apan Crocidolite Ambiguous C = Cluster (>3 Intersections! Anthophyllite I Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_004204407

NYC-WTC_000183200