4.0 pCi/L radon fix 5

https://theradonfaninstallationguide.westhavenscope.com/posts/what-to-expect-from-a-professional-radon-fan-installation

I tested my basement and got a 4.0 pCi/L radon fix reading. That's just above the EPA action level, so I installed a sub-slab depressurization system with a fan that vents outside. The post-mitigation test dropped it to 1.2 pCi/L, which feels much safer for my family's long-term lung health.