NYC-WTC_000229163

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fliters): 1896 Lab Group #: 7938 Filter Type / FUter Area: MCE 385 mm^ Lab Sample #: 9 Grid Opening Size: 0.01124 Client Sample 09 Area Examined: 0.04496 nim’ GRID BOX: Magnification: 20, GRID IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 6/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Stnjcture Type Length IDiriStrucbie N or "J EDS No (Nonadb F B c M >=05 M >=5(j Chrys AmphaxMe Nonasb AmbigM) No Coord <Sm Etements)

J

Struct = > 0.5(1 -> 5;J Aspect Ratio Grid accaptance: '/= Positive ditfractlon pattern properties confonnfog to <50% undiSKiwd tter, overlapped or (aided Totals tabwatory tdsntlficaBon criteria observed <10% parScutata coverage >50% coverage ale least 20 unfolded orovenapped grid squares <5% F B C M >5)J V= EDS spectrum oooforming to laboratory holes OF opaque areas identificaten criteria observed Chrysotile amphiboles Amphibole E = Single Fiber Amosite a = Bundle (<3 fibers <1 fiber dianeler apart Crocidolite Ambiguous I Anthophyllite I Non-Asbestos C = Cluster (>3 Intersections) I Tremolite ' M=Matrtx Actinolite ! Non-Identified NSO = No Structures Detected

CITY_21MC1OO_OO29O2336

NYC-WTC_000229163