NYC-WTC_000193236

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet ClienirjJame: NYC BOE Volume (liters): 1936 Liib Group #: 8076 Filter Type / Filter Area: MCE 385 mm" tub Sample #: 18 Grid Opening Size: 0,01124

Client Sample #: 21 Area Examined: 0.04496 mm"

GRID BOX: Magnification: 20,000 GRipiD: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/12/02

Analysis Performed By: ROMANPEYSAKHOV

GO. Structure Structure Type Length ID of Structure Norv EDS No (Nonadb F B C M >=05 p :>=5iJ Chrys Amphibole Nonasb Ambig/ND J No Coord <5m Elements)

Struct = > 0.5|r >5:1 Aspect Ratio Grid acceptance: 'J = Positive diffraction pattern oroperies conforming to <S0% undissolved filter, overlapped or folded Totals laooratory identification criteria obser/ed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M j >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster {>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified n:5D = No Structures Delected

CITY_21MC100_003094355

NYC-WTC_000193236