S50, in my opinion, should also be required to be built out with a groundwater replenishment system that recycles sewage and wastewater into tap water like Orange County has invested in. http://www.gwrsystem.com
I don't know if you remember, but a while ago there was the story about how our sewer treatment bills from Sacramento County were going to go up considerably because of a new treatment system needed to, basically, return drinking-grade water into the river. I was wondering why we need the county to do this. If we are already paying to treat the wastewater so that it's clean enough to drink, why couldn't we do that in-house (set aside some land S50) and provide the water N50 uses to S50? If there is leftover water, I'm sure it could be used for infill N50 or sold.