NYC-WTC_000189919

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClientNam^ NYC BOE Volume (liters): 1832 Lab Group #: 6648 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 13 Grid Opening Size: 001124

Client Sample #: 16 Area Examined: 0 04496 nW

GRID BOX: Magnification: 20,000 GRIPED: Accelerating Voltage: 100 KeV # Grid Openings: Analysis Date: 2/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v EDS (Nonadb No F E C >=05 p >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord Elements) <5|J

4^1 u

Stiuct = > 0 5pt > 5 1 Aspect Ratio Grd acceptance 'i-Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C '/= EDE spectrum conforming to laboratory holes or opaque areas identification criteria ooserved Chrysotile 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 Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003088342

NYC-WTC_000189919