We are building a new home. We have just installed the septic system and will have a very small back yard, 50ft / 25ft. I know I can install pavers over the tank as long as I leave room for access to the hole covers. I know I can plant grass and shallow plants over the liech field. I am wondering what else I can do over the field. Can I put field stone for walk ways and such? Any tips will be appreciated as we are very new to this. Thanks