Welcome to Active Radon Management, proudly serving Bismarck, Mandan and all the surrounding communities. We are a locally owned, licensed and insured company whos dedicated to providing the highest quality service at competitive rates. If you have any immediate concerns about radon, testing or mitigation, please call us today. Services we provide include: Radon Testing Custom Designed Mitigation Systems Both Residential & Commercial Service New Construction Systems Free Estimates Call us today and well be glad to show you more about what we do and again provide a free estimate. We look forward to serving you and thank you for your consideration.