First, Being in California adds to an already difficult problem.
No scrapper will take it because of the mixed materials.
This has worked for friends here in Michigan.
Do you have a SawzAll? Get one.
To scrap a dead RV:
Pull the appliances and anything else that might be useful and get a digital camera and sell as much as you can on Craig's list.
Rip the insides out, most of that will be plywood and particle board and can be cut in little pieces and treated as trash.
If you can remove the windows with minimal damage, they can be sold off too.
bunches of bad masonite walls and insulation will have to be put out with trash over a couple of months unless you want to rent a bin. The wood can be burned at a campfire when you get the running coach out on the road.
Pull the gas plumbing and wire aside as that has scrap value.
The skin is Aluminum and that alone has scrap value. So, peal it off and cut it into pieces that you can transport easily.
Now you have a frame and cab-cutaway. A vehicle scraper can take that. And you now know why you see old RVs dissolving into the woods in so many places.
Matt