I would like to make our new construction home radon resistant. I am having difficulty finding a plumber with experience in this and the radon mitigation people don't do prevention work. We will have a sump pump. Should we just put a sealed lid on the sump pump and run PVC pipe out of it venting through the roof? Or should we install the PVC pipe through the concrete floor in a tee through the drain tile and vent that out through the roof (we'd still do the sealed sump lid). No one seems to be experts around here...