"All neighbors should be able to enjoy outside their homes," says Yu.
Some neighbors say air pollution has so bad, they have to wear a mask like this even in their own backyard!
They are also worried for students in the school next to the asphalt plant.
With Wells Cargo wanting to build a second asphalt plant in the area, homeowners are organizing a protest Saturday.
"We would like to stop the air pollution and get this cleaned up," says Ron Hawkins.
Wells Cargo has been operating in Spring Valley since 1954. As more houses were built around it, a representative told 13 Action News they "have taken aggressive and proactive approaches" to their operation to minimize impact.
Clark County Department of Air Quality says Wells Cargo is compliant with federal health based standards.
"It is quite frustrating and instead of the situation getting better I'm so afraid it's going the other way," says Yu.
The county will be listening to what people have to say about Well Cargo's request during a public hearing on the 27th of November.
"I have every confidence in county leaders, commissioners, I have, again, every confidence in them so I'm sure they will do the right thing for the residents," says Yu.