NYC-WTC_000191557

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1928 Lab Group #: 7930 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 2 Grid Opening Size: 0,01124

Client Sample #: 2 Area Examined: 0.04496 mm-

GRIP BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or V EDS No (Nonadb F B C M >=05 M >=5p Ctirys Amphibole Nonasb Ambig/ND ,___ No : Coord <5m Elements)

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

CITY_21MC100_003091351

NYC-WTC_000191557