Requirements of Radon Licensees

• Measurement and mitigation work completed by licensed radon professionals must be submitted through the radon licensing system.
• Reports are due quarterly (January 30, April 30, July 30, October 30) but can be done more frequently.
• Measurement work must be submitted by the licensed individual who did the tests. Mitigation work is reported under the company license. For individuals who are a sole proprietor, the work is reported under that license.
• Measurements done as part of a mitigation job must be reported under both mitigation and measurement.

Instructions of what information is required can be found in the help tab of the Radon Application Help Documentation.

All mitigation systems installed by professionals must have a MDH issued tag. Licensed mitigation companies or a sole proprietor can purchase tags. A mitigation professional must complete a post-mitigation checklist found on the forms webpage upon completion of the system installation, using the MDH form, prior to attaching the system tag. The system tag must be attached by a licensed mitigation professional in the interior of building, next to the system pressure gauge, in a visible location and on the date of project completion.

Radon professionals must follow standards of conduct and work practices:

• Operate according to the QA Plan approved under the license
• Use measurement devices approved by NRPP or NRSB
• Notify the commissioner of any change to the license within 30 days
• Maintain proof of license while on a project site
• Use only radon laboratories licensed by MDH
• Test each unique foundation type
• Comply with ANSI/AARST protocols for conducting radon measurement in homes, multifamily buildings and schools/large commercial buildings
• Comply with ANSI/AARST protocols for conducting radon mitigation in homes, multifamily buildings and schools/large commercial buildings
• Maintain radon records for 3 years
• Not interfere with MDH inspection or audit
• Make available, to MDH, records, equipment, addresses, property owners, residents, and employees
• Follow Minnesota Department of Labor and Industry (DLI) requirements regarding electrical work. DLI Radon Bulletin has information on Electrical licensing and inspections for radon fan installations (PDF). For questions regarding electrical licensing or inspection, contact the Department of Labor and Industry at dli.electricity@state.mn.us or 651-284-5026.

A long-term OM&M plan is required to be included with every radon mitigation system installation. This plan package is for the building owner or occupant and contains important information on how the radon mitigation system operates, how to maintain the system, and how to monitor it to make sure it continues to operate correctly. A customizable template is available on the forms webpage. You are not required to use the MDH template.