Also on tap is procuring a few bags of cement. They never finished the french drain job in the basement. The trenches are still open. Not a huge deal until you factor in the dampness and the radon risks.
We monitor it in the house and it is minuscule but tends to rise quite bit in the basement. Below danger levels to be sure but it would be next to nil with the trenches covered again. The ventilation system will take care of what little seeps in.