NYC-WTC_000229257

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 8055 Filter Type ZFfiter Area; MCE 385 mm’ Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm^ GRID BOX; Magnification; 20,000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/11/02

Analysis Performed By; MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor \ EDS No {Nonadb F 8 C M >=05 M >=5p Chrys Amphboie Nonasb Atnbtg/NO No Coord Elements) <SP

Struct = > 0.5)1 > 5;! Aspect Ratio Grid acceptance: Positive diffraction pattern propertes confonning to <50% undlssrSved fOter, overlapped or folded Totals taOoratofy identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F B C M >6p n/i EOS spectrum conforming U laboratory holes Of opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) i Anthophyllite ; Non-Asbestos 1 Tremcriite M = Matrix Actinolite Non-ldentified USD = No Structures Delected

CITY_2lMC100_000491805 NYC-WTC_000229257