Of course the other people who live in areas where Hispanics do in California tend not to be Republicans except for the Central Valley, where you'd run into some VRA issues trying to dilute the vote. I suppose there's lots of Hispanics in Orange County, but they're not in the same areas as the most solidly Republican ones.
Both Sanchez sisters could be eliminated, for example.
That would be extremely difficult with the VRA in place. But it may be possible to make the OC CD rather marginal. The VRA is not the Pub's friend in CA, and in general when it comes to Hispanics. The Pubs would probably prefer the VRA be limited to blacks. 
Well, you could probably attach Orange and maybe Placentia to Anaheim and split Santa Ana to make a marginal district. The question really is how Hispanic does it have to be without violating the VRA. BTW, a 50% HCVAP is impossible in OC. Too many recent immigrants/illegals.
BTW BRTD, there are plenty of areas in California besides the Central Valley where the non-hispanic population votes Republican. Certain neighborhoods in Garden Grove and Anaheim with a mix of Hispanics and Vietnamese. Some areas of south SD county are possibilities and the biggies of course are Riverside and San Bernardino Counties. Lots of Hispanics, and also a ton of Republican whites living in the same neighborhoods. Riverside in particular has many of these neighborhoods.
