radon system installation

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After testing our basement levels, we decided to go ahead with a radon system installation to reduce the gas concentration. The contractor installed a sub-slab depressurization system, which involved running a PVC pipe from under the concrete slab up to a fan that vents outside above the roofline. The whole process took a couple of days, including drilling a four-inch hole through the foundation. Our follow-up tests show radon levels dropped well below the EPA action level, so the investment wa…