NYC-WTC_000190152

NYC 9/11 Public Portal Document

TEM Asbestos (air) Coust Sheet Client Name: NYC BOE Volume (liters i. iSSO Lab Group #: 6.73 I Filter Type Filter Area: VICE 33; m’Ti- Lab Sample #: 1 Grid Opening Size: G 0H24

Client Sample #: T04 Area Examined: 0 0-4496 mm-

GRID BOX: / Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # GridOnenings: 4 Analysis Date: 2/25/02

Analysis Performed By: MARK. PEYSAKHOV

GO I Structure Struc:ure Type Length ID of Structure N oi v' EDS (Nonadb No F B C M >=05 pi ) Chrys Amphibole Nonasb Ambig/ND No Cooid <5)J Elements) '

Struct = > 0 5)1 >5 I Aspect Ratio Grid acceptance y = Positive diffraction pattern properties conforming to <50% undissolvetJ filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p y= EDS spectrum conforming to laboratory holes or opaque areas identification cntena observed Chiysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO3O88674

NYC-WTC_000190152