How big is the valleys nonattainment area?
Southern Nevada’s nonattainment area for both carbon monoxide and PM10 extends 1,500 square miles and covers all urban areas in the Las Vegas Valley, including the cities of Las Vegas, Henderson and North Las Vegas. What are the major sources of dust in the valley? Most PM10 emissions are due to wind-blown dust from a variety of sources, including construction, unpaved roads, urban mining operations, and off-road riding on vacant lands. Combustion particles from car and truck emissions also play a role.