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 #: 22 Grid Opening Size: 0.01124 Client Sample #: 22 Area Examined: 0.24728 mm^ GRID BOX: Magnification: 20,000 GRID ID: 221 Accelerating Voltage: 100 KeV # Grid Openings: 99 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of structure Nor V EDS No (Nonadb F B C M >=05 (J >=5iJ Chrys Amphibole Nonasb Ambig/NO Elements) No Coord <5m 7

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I ! Photo No. (fr’orn 1 in 5 asbestos containing Samples) Grid acceptance: otruct u.5p ■ V. I Aspect Ratio <50% undissolved filter, overlapped or folded T otals \ = Positive diffraction pattern properties conforming Io <10% particulate coverage >50% coverage ate iaDoratory identification criteria observed least 20 unfolded or overlapped grid squares <5% i F i B i C i M I >5u holes or opaque areas \'= EDS spectrum conforming to laooratory Chrysotile | identification criteria ooserved ■AMPHIBOLES Amphibole I F = Single Fiber Amesite 5 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Arthophyllite Non-Asbestos i Tremolite M = Matrix Actinolite Non-Identified । NSD = No Structures Detected ________________ L._

CITY_21MC100_003069333

NYC-WTC_000202868