NYC-WTC_000200291

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group tt: 7933 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample#: 09 Area Examined: 0.04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/1/02 J Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or '1 EDS (Nonadb No F B C M >=05 p >=5|J Chrys Amphibole Nonasb Ambig/ND Coord Elements) <5p

2^ 2 £

Struct = > 0.5p._> 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

>/= EDS spectrum conforming to laboratory least 20 unfolded or overlapped grid squares <5% boles or opaque areas F B c M >5p. i identification criteria obser/ed Chrysotile AMPHIBOLES Amphibole F = Single Fiber I > Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) ■ Anthoptiyllite Non-Asbestos ! Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_011274793

NYC-WTC_000200299