Sub Slab Depressurization North

Sub-Slab Depressurization: A Practical Guide for St. Charles County Homeowners

Understanding the Basics of Radon Mitigation When I first moved to St. Charles County, I didn't give much thought to what was happening beneath my basement slab. Like most homeowners in St. Charles, O'Fallon, St. Peters, and Wentzville, I assumed the ground under my house was just dirt and rock. Then a routine radon test came back at 6.7 pCi/L, well above the EPA action level. That's when I learned about sub-slab depressurization, the most reliable method for reducing rado