Hello, Not sure if this exactly fits, but since this is environmentally related I thought why not. I need a new septic system as my existing system has totally failed from the exit pipe of the tank on. This was confirmed by excavating down 7' to the existing system. Regulations require a whole new system be designed/installed to current code. The existing system is from the late 1940's. My contractor is scheduled to do some test holes next week & a perc test w/ someone from the health dept. My ground is all gravel w/ exceptional drainage, so I do not anticipate any big issues with their tests. After he does that he can do some designs and give me the price. I already have a ball-park range. One option he told me was a Mantis system. Google turns up this: http://www.eljen.com/Pages/MantisGSF/Mantisoverview.html It appears that the system can perform an equivalent amount of work in less space than traditional designs and can be cheaper. Anyone ever heard of this? Looking for any thoughts/ideas folks may have. Thanks.