NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 Lab Sample #: 27 Grid Opening Size: 0.01124

Client Sample #: 27 Area Examined: 0.24728 mm^

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS No (Nonadb A No I Coord F B C M >=057) :>=5p Chrys Amphibole Nonasb Ambig/ND <5p Elements)

7 3ZS22 If XI /f ____ II 1/ 7 tf If V /e \ f( /I

o 7 cwZ Pa // tf ~7~r if HI 0 I if t I 4-

Photo No. (from 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.5)j > 5:1 Aspect Ratio <50% undissolved filter, overtapped or folded Totals \ = Positive diffraction pattern properties conforming to <10% paniculate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or ovedapped grid squares <5% r j F I B j C i M I >5u holes or opaque areas L v = EDS spectrum conforming to laboratory Identification critena observed AMPHIBOLES t 1 Chrysotile I Amphibole r = Single Fiber B = Bundle (<3 fibers <1 fiber diameter apan C = Cluster (>3 Intersections) Amosite Crocidolite Anthophyllite r r Ambiguous Non-Asbestos Tremolite L M : Matrix ; Non-Identified Actinolite NSC = No Structures Detected J__

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NYC-WTC_000202916