Chippewa Falls, WI 54729
Chippewa Falls, Wisconsin 54729 Residential Radon Testing and Mitigation Project. The system installed for this house is called a pit system, where a hole is bored through the concrete floor and a suction pit is dug out from under the floor next to the footing. Although these systems are a bit harder to mitigate we were still able to achieve results below the EPA's action level of below 4 pCi/l. The original radon level reported was 4.9 pCi/l and we were able to reduce it down to 3.6 pCi/l. Great improvement!