LEED builder radon advice 5

https://bluecircuitry.com/s/gXRcbJkGAP81zK7IJgA_z

If you're a LEED builder dealing with radon, remember that mitigation starts before the pour. Choose a vapor barrier with low permeability and seal all penetrations. A passive sub-slab depressurization system, with a vent pipe running up through conditioned space, can later be activated if tests show elevated levels. Don't forget to label the pipe for future fan installation. This approach aligns with LEED's indoor air quality credits without over-engineering for sites that test low.