We are working on a five-story student dormitory including a partial basement area in EPA Radon Zone 1. Are we required to follow the guidance for 'residential only' projects in high-risk areas for radon? More specifically, does the definition of "residential units" and "dwelling unit" apply to dormitory facilities? These units do not include full living accommodations (in-room kitchens, laundry, etc.).
According to the reference guide, the requirements for 'residential only' projects in EPA Zone 1 reads as follows:
"...In addition to the requirements above, if the project building contains residential units, each dwelling unit must meet all of the following requirements. For projects in high-risk areas for radon, EPA Radon Zone 1, design and construct any dwelling unit on levels one through four above grade with radon-resistant construction techniques..."