I don't know if it'll help ya, but
Helicopter Adventures Inc. has a school in Concord CA., which isn't too far from KSTS (Santa Rosa), and they are fairly savy about JAA ratings etc. as they offer JAA training. I think most of the JAA stuff is handled out of their Florida base, and I also don't know if they have a 206 in CCR, but it's worth a look.
Good luck...