NYC-WTC_000195048

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WC BOE Volume (liters): 1920 Lab Group #: 6828 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 04 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: 50^6^ Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 2/26/02 Analysis Performed By: _____ Ol_________

ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure NorN EDS No (Noradb F B C M >=05 M >=5|j Chrys Amphibole Nonasb Ambig/ND No Coord <5(J Elements)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance: N= Positive 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 overtaoped grid squares <5% F B C I M 1 >5|u n'= EDS spectrum conforming to laboratory identification criteria observed holes or opaque areas Chrysotile —----i-------- AMPHIBOLES Amphibole F = Single Fiber Amosite 3 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos I Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_0 04153174

NYC-WTC_000195048