John competently mitigated my finished basement radon issue. He showed up on time, performed all the work in a "workmanlike" manner including core-drilling through the foundation wall. I supplied the electrical service per our agreement. I added a KBWC-16K Wall Mount AC Fan Motor Control to slow down (run more efficiently) the standard fan that was installed. Everything is working perfectly and my "radon" reading went from over 8 to 1.2, The point of extraction was inside a small closet, directly into the footing gravel ... no sump pump pit involved.
