NYC-WTC_000229324

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume fliters): 1800 Lab Group #; 8166 Filter Type / Filter Area: MCE 385 mm* .ab Sample #: 13 Grid Opening Size: 0.01124

Client Sample 15 Area Examined: 0.04496 mm''

GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings! 4 Analysis Date: 6/18/02

Analysis Performed By: MARKPEYSAKHOV

GO. Strudure StnjGture Type Length 10 of Structure N or v EDS No (Noiadb F B C M »05m >=5m Chrys Amphtwle Nonasb AmtH9/NO No Coord <5p Etements}

g. ■

Struct ” > 0.5 p -> 5; I Aspect Ratio Gritlaasptanee: 'i= Positive diffraction pattern properties conforrrtng to <50% utidissctvsd tttef, owlapped or fekted Totals iaboratoy identification criteria otaeived <10% paiScutato coverage >50% covereje ate least 20 unfolded or ovedapped grid squares <5% F B C M >5M 4=EDS siMCtnim anforming Io tatxjratoiy (totes or opaque areas identification criteria observed Chrysotile i AMPHIBOLES I Amphibole F = Single Fiber Amosite B - Bundle !<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersecdons) Anthophyllite Non-Asbcstos Tremolite M = MatrK Actinolite Non-Identified NSD = Mo Structures Detected

CITY_21MC1OO_OO29O2434

NYC-WTC_000229324