NYC-WTC_000221522

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client ^ame: NYC BOE Volume (liters): 1840 Lab Group #: 7291 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124

Client Sample 06 Area Examined: 0.04496 mm-

GRID BOX: GRID ID: w Magnification: Accelerating Voltage: 20,000 100 KeV # Grid Openings: 4 Analysis Date: 4/1/02

Analysis Performed By; ____________ yv-y TP ROMAN PEYSAKHOV

GO^ Structure I Structure Type Length ID of Structure N or V EDS (Nonadb Nc F B C M >=05 p >=5|J Chrys Amphibole j Nonasb Ambig/ND No Coord Elements) <5u 7“ pal A /A (I

7^zz=:

Struct = > O.5|.i > 5:1 Aspect Ratio Grid acceptance:

v = 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% F B C M i >5^, vA EDS spectrum conforming to laborator/ holes or opaque areas Identification criteria ooservec Chi'vsotile AMPHIBOLES Amphibole r = Single Fiber Amosite 3 = Eunole (<3 fibers <1 fiber ciaineter apart. Crocidolite .Ambiguous C = Cluster l>3 iniersectionsi Anthophyllite I Non-Asbestos I Tremolite M - Matrix NSD = Mo Structures Delected Actinolite I .\'on-Identified | T CITY_21MC100_002888306

NYC-WTC_000221522