Nationally Approved Courses Our Course Delivery Methods Nationally Approved Radon Testing Courses by both the NRSB and NRPP Radon 101: Measurement + Exam Prep $395.00 Add to cart Radon 101: Measurement Course $250.00 Add to cart Nationally Approved Mitigation Courses by the NRPP National Radon 401: Radon Mitigation $495.00 Add to cart NRPP Approved Live Webinar Courses Radon 101: Measurement Review Webinar $495.00 Add to cart Sale! Radon 401: Mitigation Webinar $645.00 $595.00 Add to cart Sale! NRPP Radon 101 & 401 Combo $890.00 $750.00 Add to cart Continuing Education: NRPP Only Radon 300: Quality Assurance Planning Course $160.00 Add to cart Exam Prep Upgrade to Hybrid [LIVE Exam Prep via Zoom] $99.00 Add to cart