NYC-WTC_000215687

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: me BOE Volume (liters): 1936 Lab Group #: 6080 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 12 Area Examined: 0.04496

GRID BOX: Magnification: 20,000 , GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/12/01

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Stnjcture N or ’Z EDS No (Nonadb F B C M >=05 u ' >=5(j Chrys Amphibole Nonasb Ambig/ND No Coord <5iJ Elements) y

Struct = > 0.5n .> 5:1 Aspect Ratio Grid acceptance: ^1= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratoryidentification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m >/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous’ C = Cluster i>3 Intersections) Anthophyllite Non-Asbestos M = Matrix I Tremolite Actinolite Non-ldentified NSD = No Structures Detected

CITY_21MC1OO_OO2874O18

NYC-WTC_0002 15698