NYC-WTC_000194635

NYC 9/11 Public Portal Document

TEM Asbestos (air) Couni ct Client Name; NYC BOE ' (liters^ 1920 Lab Group #: 7851 Filtei Tv! . MCE 385 mm" Lab Sample #: 21 mi > 0.01124 Client Sample #: 21 .At.-, .Aumiiiiil: 0.04496 mm^ GRID BOX; i.lcatioii: 20,000 GRID ID: ; S'oltam : 100 KeV # Grid Openings: 4 U;ii, : 5/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ■lire EDS

No Coord No F B c M >=05 p >=5p Chrys A.n:big/ND (Nonadb Elements) <5p i

2. I- a 55^

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: = Positive diffraction pattern properties conforming to <50% undissoNed filter, overlapped or folded i uials laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% ■ I B C M >5p "7= EOS spectrum conforming to laboratory holes or opaque areas __ idenbfication criteria observed AMPHIBOLES F = Single Fiber Amosite 5 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C-= Cluster (>3 Intersections) Anthophyllite N. . Tremolite —I M = Matrix Non-. Actinolite NSD = No Structures Delected

CITY_21MC100_0 03096559

NYC-WTC_000194635