NYC-WTC_000202847

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3700 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 17 Grid Opening Size: 0.01124

Client Sample #: 17 Area Examined: 0.24728 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS i (Nonadb i No F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <51J Elements)

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I Photo No. (from 1 in o asbestos containing samples) Grid acceptance: Struct = > 0.5(j > 5:1 Aspect Ratio <50% undissolved filter, overlapped or folded Totals \ = Positive diffraciion partem properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% T C I M i >5o holes or opaque areas L i ® v= EDS spectrum conforming to laooraioty Chrysotile identification critena observed amphiboles' Amphibole F = Single Fiber Amosite i I 3 = Bundle <3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-.Asbestos M = Matrix NSC = No Stiuctures Detected Tremolite Actinolite Non-Identified 1 '________________________ .1 H-i

CITY_21MC100_003069328

NYC-WTC_000202863