NYC-WTC_000219290

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sliest Client Name: NYC BOE \T)luiiic (liters): 1816 Lab Group #: 7538 Filter Type , Filter .Area: MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: 18 Area Examined: 0.04496 mm^ GRID BOX: Mamiilkation: 20,000 GRID ID: Accelei arilig Voltage: 100 KeV # Grid Openings: 4 .Aiialvsis Date: 4/25/02

Analysis Perfornied Ey: MARK PEYSAKTIOV

GO. Structure Structure Type Length : 'uciiire NorN EDS (Nonadb No F B C M >=05 p >=5(0 Chrys ■ j Ampin- - honasb Ambig/ND No Coord Elements) <5|J

z

Struct = -■ ().5p > 5:1 Aspect Ratio G h acceptance: '/= Positive diffraction pattern properties confornusc to ■' - .^dissolved filler, overlapped or folded Totals laboratory identification criteria observed < u , particulate coverage >50% coverage ate let; I) unfolded or overlapped grid squares <5% F B C M >5u EOS spectrum conforming to laboratory hl I- -v opaque areas _ identification crilena observed xtPHlBOLES I'd;/ F = Single Fiber Amosite ■iiluA B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite C = Cluster j>3 Intersections) .-‘.nthophyllite Nor .'stos Tremolite M = Matrix Non .■ I fit'J Actinolite NSD = No Structures Detected

CITY_21MC100_002879634

NYC-WTC_000219290