NYC-WTC_000229365

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #; 8242 Filter Type / Filter Area: MCE 385 mm" Lab Sample #: 4 Grid SJuannT!L^ize: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelcratiiig Vottage: 100 KeV # Grid Openings: 4 Analysis Pate: 6/23/02

Analysis Performed By: MARK^^EYSAKHOV

GO. Structure Structure Type Length ID of Structure N or v EDS No ■>=05 M I ;>=5p (Nonadb F B C M Ctirys Amphibote Monash AmbigMj No Coord <5p ■ Elements)

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Struct = > 0.5(1 > 5:1 Aspect Ratio Gridaoceptaoee: \ 3 Positwe direction pattern properties conforming to <50% undtssoNed fitter, overiapped orfadec Totals laboratoryidentification otteria observed <10% parSculate coverage >50% coverage ale least 20 unfolded or weMpped grid squares <5% F B C M >5p N = EDS spectrum conforming to laboratory holes oropaque areas Identification criteria observed Chrysotile AMPHIBOLES I Amphibole” F» Single Fiber Amosite 0 = Bundle {<3 fibers <1 fiber diameter apart Crocidolite ' Ambiguous C - Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite I M = Matrin Actinolite Non-ldcntified NSO = No Structures Detected

CITY_21MC1OO_OO29O2449

NYC-WTC_000229365