When they closed the Arlington field temporarily a few years ago, they let us fly on the other side of the N-S road, south of the hangars. Here's the process: you go to the airport manager and ask him to fly there. He will be opposed, saying that if RC guys saw us flying there, they'd fly there, too, and hit full-scale airplanes. Then you tell them that the RC guys would try to fly there anyhow, but if we were there, we'd ward them off. That argument convinced him on a couple of occasions. It also actually worked that way in practice.
I know of another field closer to your house than Chehalis, but we can only fly electric there.