NYC-WTC_000203596

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1944 Lab Group #: 6228 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: Grid Opening Size: 0.01124 Client Sample #: 07 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 ! GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/29/01

Analysis Performed By: MARKPEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 9 EOS No c (Nonadb B C >=05 p Chrys Amphibole I Nonasb Ambig/ND No Coord <5p Elements)

<7

i I 1

Struct = > 0.5p >5;l Aspect Ratio Grid accaptance: N = Positive diffraction pattern properties conforming to <50% undissolved Filter, overlapped or folded Totals laboratory identification criteria ooserved <10% particulate coverage >50% coverage ate least 20 unfolded or overtapped grid squares <5% F i B I C 1 M I >5u -N E03 spectrum conforming io laboratoiy holes or opaque areas identification cnteria observed Clirysotile i ! AMPHIBOLES Amphibole | ■ = Single rider Amosite 5 = Suridle i<3 fibers <1 fiber diameter apart Crocidolite Ambiguous I C = Cluster (>3 Iniersecsons) Anthophyllite Non-Asbestos j Tremolite M = Matrix Non-Identified [ Actinolite NSD = fo Structures Delected

CITY_21MC100_003059091

NYC-WTC_000203596