NYC-WTC_000229166

NYC 9/11 Public Portal Document

TEMAsbestosfairlCoufltShiet Client Name: NYC BOE Volume flitersl; 1988 Lab Group #: 7938 Filter Type / Filter Area: MCE 385 mm- LabSamfile^ 12 Grid Opening Size: 0.01124 Client Sample #; 12 Area Examined; 0.04496 mm" GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings; 4 Analysis Date: 6/2/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length to structure N or V EDS No (Noftadb F B C M >=05 M ■ >=5p Ctirys Amphibote Nonasb No r Coord <5m Etemertej

Struct« > 0.5 p _> 5:1 Aspect Ratio Grid aoceptenos; '/= Positive dtffrariion pattern properties confoming to <5014 undtisolwt Nitsr, ovsrisppsd or fobad Totals ratwaiDfy rdentiffcafcn crJeria observed <1014 parSculate oweraes >50% coverage ate least 20 unfolded or weflapped gild squares <5% F B C M >5)J EOS spectrum conforming to laboratoiy holes or opaque areas identificawn critena ooserved Chrysotile AMPHIBOLES ---------- - ------------ II Amphibole F=Slngte Fiber Amosite B = Sundie {<3 fibers <1 fiber diameter apart Croodolits Ambiguous C = Cluster (>3 Inlersecifons} Anthophyllite Non-Asbestos Tremolite. M = Matrix Actinolite Non-Idcntified NSO = No Structures Detected

CITY_21MC100_002902339

NYC-WTC_000229166