Vancouver

PortlandBeaverton

Hillsboro

Tigard Milwaukie

Gresham

Estacada

Sandy

Wilsonville

CanbyNewberg

Forest Grove

Scappoose

McMinnville

OregonCity

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LegendOzone Monitors: 1,2,3,4Vancouver AQMAPortland AQMAHighwaysRoads

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0 5 102.5 Miles