NYC-WTC_000201358

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voiume (liters'): 1840 Lab Group #: 7370 Filter Tvpe / Filter Area: MCE 385 mm’ Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 02 Area Examined: 0.04496 mm-

GRID BOX: Magnification: ■ 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: -4/10/02

Analysis Performed By: MARK PEYSAKHOY

GO. Structure ' Structure Type Length ID of Structure N or 7 EDS (Nonadt No No Coord I B C M >=05 u <5d ! 5 >^5ij Chrys - Amphibole Nonasb Ambig/ND Elements)

<7^ XY i3 ■

Struct = > 0.5(u >5:1 Aspect Ratio Grid acceptance: . 7- Positive diffraction pattern properties sonforming-to "50% undissolved filter, overlapped o- folded : Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M 7= EDS spectrum conforming to laboratory holes or opaque areas Identification criteria observed Clnrysotile ■ AMPHIBOT.ES i Amphibole F = Single Fiber i Amosite B = Bundle (<3 f bers <1 fiber diameter apart I Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-Idsntified Actinolite NSD = No Structures Detected

CITY_21MC100_011275665

NYC-WTC_000201359