NYC-WTC_000229269

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1824 Lab Group #: 8074 Filter Type Z Filter Area; MCE 385 Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #; 18 Area Examined: 0.04496 mm*

GRID BOX: Magnification; 20 000 GRTOID; Accelerating Voltage: 100 Kc V # Grid Openings; 4 Analysis Date: 6/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Lengtti IDofStructure N or v EOS No. (Ncxiadb F B C M >s05m >=5p Chrys Amphtoote Nonasb Ainbig/ND Elemente)

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i 1 i .i—1

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: 4= PosiSve diffraction pattern properties conforming to <50% undissolved filter, ov^^. or folded Totals laboratory idenfficatioft criteria observed <10% partiadate coverage >50% coverage ale least 20 unfolded or overlapped grid squates <5% F B C >5m EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES ; Amphibole F = Singfo Fiber Amosite 6 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i Anthophyllite Non-Asbest^ C = Chistef(>3 Intersections) i Tremolite M^Matru ' Actinolite Non-Identified NSD’’No Stiuctures Detected

CITY_21MC1OO_OOO491832 NYC-WTC_000229269