Is there a transparent plan to look for and report on any radioactivity (radon, radon daughters, etc…), whether it is naturally occurring from underground or otherwise?

Radon is a naturally-occurring substance and is not known to be affiliated with refinery operations.  Radon or other radioactive substances have not been identified as compounds of concern (COCs) at the Site based on past operations or investigations; therefore, they have not been included in the Remedial Investigations.