NYC-WTC_000223696

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7425 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 2 Grid Opening Size: 0.01124

Client Sample #: 05 AreaExamin^ 0.04496 mm‘

GRID BOX: Magnification: 20,000 GRID ID: Accelerating V'oltage: 100 Ke\’ # Grid Openings: 4 Analysis Date: 4 15 02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure \ or \ i EDS No Amphibole i Nonasb i AmbigiND ’ Aonaa. F B C M >=05 M :>=5p Chrys : I ] Elements) Mo Coord <5p

ZaS ■CX- —if— I___ d_____

Struct = > I).OU > 5:1 Aspect Ratio Grid acceptance: v = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >60% coverage ate least 20 unfolded or overlapped gnd squares <5% f ■ F I B C i M V= EDS spectrum conforming to iaboratory holes or opaque areas identification enteria observed Clirysotile i ! A.VIPHIBOLES Amphibole ■ F - Single Fiber Amosite 9 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster t>3 intersections) Anthoptiyllite Non-Asbestos । Tremolite M = Matrix Non-Identified ! Actinolite NSO = Vo Structures Detected

CITY_21MC100_002919774

NYC-WTC_000223696