NYC-WTC_000229129

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume filters); 1808 Lab Group #: 7901 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 15 Grid Opening Size: 0,01124

Client Sample #: Area Examined: 0.04496 nun" GRID BOX; Magnification: 20,000 GRIDID: Accelerating Voltage; 100 KeV # Grid Openings; 4 Analysts Date: 5/29/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or 7 EOS (Nonadb No F B c M >•05 p • ?®5m Chrys Art^hibofe Mooast) AmbigMO Elements) - No Coord <5M- f-TO

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Struct “ > 0-5)1 >5:1 Aspect Ratio Grid acceptance: V = Positive diffraction pattern properties conforming to “•’di’sohred fiftar, overlap^or folded Totals laboratory identification criteria observed ^10% pS^tlCUFfitSCOVBfS^ COVSI^QS 316 least 20 unfolded or overlapped grid squares <5% F B C MT >5m EOS spectrum conforming to laboratory holes or opaque areas . identfcation crttena observed Chrysotile AMPHIBOLES . Amphibole F = Single Rber Amosite -. B = Bundle (<3 fibers <1 fiberdiameter apart . ■ Croeidblite • . • ' ' Ambiguous C = Ciuster {>3 Intersections) . . Anthophyllite . Non-Asbestos . Tremolite. M = Matrix . Actinolite Y Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO29O2248

NYC-WTC_000229129