I'm relatively new to permies.com; this is my first post. So first, I want to thank Paul for the time & effort setting up & running this forum & for bringing us the opportunity to ask folks like Mike questions.
Normally, I'd do a lot of research before asking a question like this, but it's not going to happen before Friday, so here goes:
How is the potential for radon handled in your underground structures? (I've had to remediate for radon at a former home in our area.)
Thanks for all your work on this type of structure and for making the effort to get the information out here so it can be used by others.