Depends on what you are wanting. DeValle in Livermore is nice, pretty rustic but heavily used especially on weekends. It has water/sewer but no electric, and if your rig is longer than 32' it can be tight (had my Kingston KF30 there and I was the biggest one there).
There is also Diablo State Park, it cannot take anythingmore than 25', it is very nice but is also very popular, again weekends are the worst. No hookups are here.
I looked at Woodalls and here are a couple others (I have never been to these):
Contra Costa County Fair RV Camp, In Antioch- hookups
Sunny Acres Mobile Home Park and RV Park - Concord (the closest)
Morehead Park - Tracy - Furthest
I would go to campgroundreviews.com and see how these are rated.
2008.5ish Kingston KF30SB
2008 Chevy 3500 dually