NYC-WTC_000223695

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 7425 Filter Tvpe / Filter Area: MCE 385 mm/ Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0,04496 mm-

GRID BOX: ■Magnification: 20.000 GRIDED: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 4'15 02

Analysis Performed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or v ESS No F B C M r~ -5- Ctirys Amphibole ' i Ncrasb i Amcig.'NC ’ j 3'- Semens, _ No Coord <5p

-44— -‘I----

Struct = > 0.5p > 5:1 Aspect Ratio Gnd acceptance; 7= Posihve diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% 7' ; F I B 1 C . M 7= EOS spectrum conforming to laboratory holes or opaque areas L loeniilication cntena ooservea Chrysotile , ■AMPHIBOLES .Amphibole i । ■ F = Single Fiber Amosite B - Bundle (<3 fibers <1 fiber diameter apait Crocidolite Arnbiguous • C = Cluster {>3 Intersections) Anthopfiyllite Non-.Asbestos i i 71 = Matrix Tremolite '--------------------- 1- Actinolite Non-ldentiiied i NSD = No Structures Detected

CITY_21MC100_002919773

NYC-WTC_000223695