i'm toast.
congratulations todd
my only knowledge of septic systems is very general.
i have a nieghbor who had no flat space, he installed an engineered stacked leach field on the steep hillside in front of his house, that was costly but had a very small footprint. because of the small footprint, a stacked system might be better for quarry lake groundwater protection
an alternative to standard systems....i think somebody touched on this already, but there are dozens of companies marketing biofilters, so that the waste water is cleaner by the time it reaches a conventional leach field.
as a side note, i've heard you should really not put grey water through septic systems (particularly from clothes and dish washers), because the detergents inhibit microbial breakdown. have you thought of that yet bruce? you might want to design grey water and sewage disposal separately.
good luck,
maybe died is still hoping to get a custom jig or two
