NYC-WTC_000220704

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOL Volume (liters): 1800 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 Lab Sample #: 14 Grid Opening Size: 0.01124

Client Sample #: 14 Area Examined: 0.04496 mm^

GRID BOX: Maenitication: 20,000 GRIDID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4/1/02

Analysis Performed By: ROMAN PF.YSAKHOV

GO, Structure Structure Type Length ID of Structure N or y EDS [ (Nonadb I No F B C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND Elements) i 'y No Coord <5m I Al ? A If a

Struct = > 0,5u > 5:1 Aspect Ratio Grid acceptance: \= 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 grid squares <5% j F B ? C = cDS spectrum conforming to laboratory holes or opaque areas identification criteria ooserved .AMPHIBOLES S Chrysotile ' Amphibole ' i i F = Single Fiber Amosite j Ambiguous ! B = Buncle r<3 fibers <1 fiber diameter apart Crocidolite C = Cluster i>3 Intersections) Anthophyllite Non-Asbestos”! Tremolite M = Matrix Non-Identified j Actinolite 1 i NSD = No Structures Detected

CITY_21MC100_000621554 NYC-WTC_000220704