NYC-WTC_000228855

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Mame: NYC BOE Volume fliters): 1800 Lab Group #: 7717 Filter Type / Filter Area: MCE 385 rr,m^ Lab Sample #: 5 Grid Opening Size: 0.01124 Client Sample #; 08 Area Examined: 0.04496 mni-

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date. 5/11/02

Analysis Performed By: KJ ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Stnicfore N or V EOS (Nonadb No F 8 C >=05 p >=5[J Chrys Amphibole Nonasb AmPig/ND No Coord <5|J Eientents)

zt 1 i 3

Struct = >0.3h > 5:1 Aspect Ratio Grid acceptance: 1/= Positive diffraction pattern properties conforming to <50% undissotved filter, overlapped or folded Totals laboratory idenlifcaton crltera observed <;10% partculete coverage >50% coverage ate least 20 unfolded or overtopped grid squares <5% F B C M >5^J 1/= EDS spectrum conforming to laboratory holes or opaque areas idenlihcafott criteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite B = Bundle {<3 Ubers <1 liber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldentified NSC = Mo Siruclures Delected

CITY_21MC100_002901806

NYC-WTC_000228855