NYC-WTC_000228892

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7733 Filter Type / Filter Area: MCE 385 mm" Lab Sample #; 3 Grid Opening Size: 0.01124 Client Sample #: 05 Area Examined: 0.04496 mm" GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 K.eV # Grid Openings: 4 Analysis Date: 5/13/02 Analysis Performed By: ^77

ROMAN PEYSAKHOV

GO. structure Structure Type Length ID of Structure Nor v EDS No (bJonadb F B C M >=05 p ~| >-5p Chrys Amphibote Nonasb Ambig/NO Eiements)

rs raw No Coord <5p

i

1 J Struct = > O Sp > S;! Aspect Ratio Gnd acceptance: ■^= Positive diffraction pattern properties conforming to <50% undssohwl filter, overlapped or folded Totajs ialwratory identification criteria observed <10% paniculate coverage >50% coverage ate least 20 unfolded or ovartapped grid sguares <5% F B C M >5p 4 = EOS spectrum conforming to isboratory holes or opaque areas rdentificatton criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<2 fibers <1 fiber ciameter apart Crocidolite Ambiguous C = Cluster{>3 Intersections! Anthophyllite Non-Asbestos Tremolite M = Matrix Acbnolite Non-Identified NSD * No Structures Delected

CITY_21MC100_002901852

NYC-WTC_000228892