NYC-WTC_000229085

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters); 1800 Lab Group ff: 7879 Filter Type / Filter Area: MCE 3S5 mm* Lab Sample #; 8 Grid Opening Size: 0,01124 Client Sample #: 10 A,nA Examined; 0.04496 mm* GRID BOX; Magnification: 20 GRP) ID; Accelerating Voltage: 100 KeV # Grid Openiags: 4 Analysis Date: 5/26/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID af Structure N or v EDS (Nonaob No Coord No F S c M >=05sj <5tJ ;>=5m Chrys Amphitxile Nonasb Ant>ig/NO Elerrents)

*x -i J 1

J 4

Struct “ > 0.5(1 > 5-. I Aspect Ratio Grid acceptance: 'i= Fasitive diffraction pattern properties conforming to Totals laboratory idendfication criteria obssrued <10% parto^te coverage >50% coverage ate least 20 un/eWed or wartepped grid squares <5% F B C >5(j '^= EDS spectrum centorming to laboratory holes or opaque areas identirication criteria observed Chrysotile AMPHIBOLES Amphibole F ’ Single Fiber Amosite 3 ' Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Ciuster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite Mairiit Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_002902169

NYC-WTC_000229085