TEM Asbestos air sample results, NYC BOE, Feb 2002

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: N^C BOE Volume (liters): IS06 Lab Group #: 6610 Filter Type / Filter Area: MCE 385 nim- Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample #•. 12 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/9/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor 7 EDS No (Nonadb F B C M >=05 p Chrys Amphibole Nonasb Ambig/NO No Coord <5m Elements)

! I I i Struct = > 0.5u ,> 5:1 Aspect Ratio Gnd acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals Iaborato7 Identification criteria observed <10% particulate coverage >50% coverage ate least 20 unraided or overtapped grid squares <5% F B C ) M j >5p v= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysorile : AMPHIBOLES Amphibole r = Single Fiber Amosite S = Bundle (<3 fibers <1 fiber diameter apart ' Crocidolite Ambiguous C = Cluster (>3 Intersections) : Anthophyllite Non-Asbestos i Tremolite M = Matrix Non-Identified I i Actinolite NSD = No Structures Detected

CITY_21MC1OO_OO31O3O79

NYC-WTC_000183741