NYC-WTC_000229128

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volume (liters): 1800 Lab Group #: 7901 Filter Type / Filter Area; MCE 385 Lab Sample #; 14 Grid Opening Size: 0.01124 Client Sample #: 16 Area Examined: 0.04496 GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/29/02

-------------- Analysis Performed By; TT l\jf ’' ROMAN PEYSAKHOV

GO. Structure StTJCture Type Length ID of structure N or V EDS 1 (Nonadb { No ■ F Q C >i05p :>=5p. Chrys Amphibole Nonasb Ambig/ND No Coord M. <5p. ■ Elements)

2

StruC£ = >O.5fi >5.1 Aspect Ratio Grid acceptance.■ • '/= Posidue dittraction pattern properties contonning to <50% undissotved filter, overlapped or folded Totals <10% particulate coverage >50% coverage ate taboratory identilication criteria obsewed least 20 unfolded orOverfappedgnd squares <5% F B C M >5m A- EDS spectrum conforming to laboratory holes or opaque ar^s identihcatiofl criteria observed Chrysohle AMPHIBOLES Amphibole F = Single Fiber Amosite.. B = Bundle (<3 fibers <1 fiber diameter apart Crocidolile. Ambiguous C = Cluster (>3 Intersections) Anthophyllite ... Non-Asbestos Tremolite . M = Matrix Actinolite ■ Non-Idenrified NSD = No Structures Detected

CITY_21MC1OO_OO29O2247

NYC-WTC_000229128