NYC-WTC_000198095

NYC 9/11 Public Portal Document

r TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters’): 1805 Lab Group #: 7715 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 3 Grid Opening Size: 0.01124 Client Sample #: 03 Area Examined: 0.04496 mm^ GRID BOX: Y237: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/11/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Structure N or ’Z EDS No (Nonadb F B C M >=05 M : •=5p Chrys Amphibole Nonasb Ambig/ND z-v No Coord <5p Elements)

7^ T .iiT 2

Struct = > 0.5n >5:1 Aspect Ratio Grid acceptance; 4= Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria obsen/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster ;>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified j Actinolite i NSD = No Structures Detected

CITY_21MC100_003029680

NYC-WTC_000198095