You will find different pricing in CA, than in other states.
Not only labor and fuel cost is higher, but CA require special soil mixes and special rocks mix for leach field.
I have septic tank in Las Vegas and from what I can observe, they just backfilled leach field with native desert dirt.
But I don't think you need to build leach field for 8 bedrooms at start.
I would get bigger tank and do smaller field, adding to it eventually down the road.
What I also noticed between CA and NV is that CA is mostly having clay dirt, so they protect the tank from ground water entering.
In NV desert sucks whatever you give it and nobody worries about good tank sealing.
Totally different principals
