NYC-WTC_000202033

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Mame: NYC BOE Volume (liters'): 1840 Lab Group #: 7146 Filter Type / Filter Area: MCE; ■ 385 mm^ Lab Sample #: 7 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/20/02

Analysis Performed By: ROMAN PE YSAKHO V

GO. Structure Structure Type Length ID of Structure N or N I EDS ; i (Nonadb - No; F B C M ,>=05 p >=5(j ' ' Chrys Amphibole Nonasb Ambig/ND No Coord <6p ■ Elements) f

:V a-

■ t.

Struct = >;0.5|i > 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to, <50% undissoived filter, overlapped or folded Tot^ laboratory identification criteria observed <10“/!) particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p ^= EDS specirum contorming to laboratory , holes oropaquearsas : identification criteria observed . ; Chrysotile f AMPHIBOLES Amphibole F = Single riiter ■ Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart < Crocidolite- Ambiguous C = Cluster (>3 Intersections) 7 i Anthophyllite 7' Non-Asbestos Tremolite I : .'W = Matrix f /i Non-Identified 1 Actinolite r NSD = No Structures Detected r

CITY_21MC100_011276026

NYC-WTC_000202033