In Norwalk, we worked on a home preparing for closing, where radon levels tested at 5.5 pCi/L. The property has a single foundation with no sump pump.   Due to the lack of an outlet in the basement, the radon test was set up in the front hallway to ensure proper monitoring.     A one-pipe radon mitigation system was installed, routed to the right rear corner of the home for exterior venting. The layout was designed to provide effective radon reduction while keeping the installation clean and appropriately positioned for the structure.