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Environmental Health Division
Licensing for Radon Measurement Professionals
The Minnesota Radon Licensing Act, effective January 1, 2019, has licensure, work practice, continuing education and reporting requirements for radon measurement.
To find radon licensing, select Radon Licensing System.
Who needs a license?
Any person who performs a test to determine the presence and concentration of radon in a building the person does not own or lease. This includes anyone who places or retrieves test devices.
What do you need to get licensed?
Training and Exam
To be eligible for a measurement professional license, all applicants must:
- Complete an approved initial radon measurement training course
- Pass an approved radon measurement examination (the course completion exam at the end of an online course is not sufficient)
- Contact MDH if you can't meet the requirements for remote exams
(If you take an in person class, they may offer the NRPP or NRSB exam after the course)
Important information for those using AARST-NRPP for training and exams: In order to qualify for a Radon Measurement Professional license, you must complete an approved Radon Measurement Professional (RMP) and pass the RMP exam. This training and exam has been deemed equivalent by AARST-NRPP to their original radon measurement certification. The Radon Measurement Field Technician training and exam is a lower tier of training and exam and not sufficient to qualify for an MDH Radon Measurement Professional license.
Important information for those using NRSB for training and exams: In order to qualify for a Radon Measurement Professional license, you must complete an approved Radon Measurement Specialist (RMS) course and pass the RMS exam. The Radon Measurement Technician training and exam is a lower tier of training and exam and not sufficient to qualify for an MDH Radon Measurement Professional license.
Approved Testing Devices
Licensed professionals must submit a list of continuous monitors and passive devices that they use to measure radon. Continuous monitors used must be approved by either the NRPP or the NRSB. Passive radon devices must be analyzed by licensed radon laboratories.
Quality Assurance (QA) Plan
Licensed Radon Professionals are required to submit a QA plan for measurement based on United States Environmental Protection Agency National Radon Proficiency Program Guidance on Quality Assurance. MDH has developed a QA plan template. While you are not required to use the MDH template, it has been developed to make the process as simple as possible. At this time, none of the CRM or passive device manufacturer’s templates meet the necessary requirements. You may modify your existing plan, modify a manufacturer’s plan or start from the MDH template.
- MDH Standard QA Plan (PDF)
- MDH QA Plan Adoption Form (PDF)
- QA Plan Control Log and Charts (Excel)
- Radon Test Report (PDF)
- Radon Test Notification Form English (PDF)
- Radon Test Notification Form Spanish (PDF)
Note: If you wish to be a radon mitigation professional, but will not be placing or retrieving radon test devices, then a shorter QA plan will be acceptable. MDH will still need to know which approved radon laboratory will supply your test kits and how you will comply with section 10.2 of the Soil Gas Mitigation Standards. The ANSI/AARST Soil Gas Mitigation Standards for Existing Homes section 10.2 requires a post-mitigation radon test be conducted and who can conduct the post-mitigation measurements.
Application and Cost
Applications are completed online through the radon licensing system. Documents are to be uploaded through the radon licensing system. No paper applications will be accepted. Applicants must submit:
- A completed online application form through the radon licensing system
- Proof they have completed the required training and passed the measurement exam
- A list of measurement devices they plan to use
- A copy of their QA plan
- A nonrefundable fee of $150 payable by e-check, credit card, or debit card
If you wish to be licensed for both radon mitigation and measurement, apply for only the radon mitigation license (the radon mitigation license includes the radon measurement license).
Measurement professionals must submit a listing of all radon tests completed to MDH. These reports are due quarterly (January 30, April 30, July 30, October 30) and must be submitted online through the radon licensing system. Information must include:
- Address of testing location
- Start and end date of test
- Type of device used
- If the test was an initial, follow-up, or post-mitigation test
- If the test was part of a real estate transaction
- Reported radon concentration
- Age and type of building tested
- Whether a mitigation system was present and the system tag number (if applicable)
All data can be entered into a spreadsheet and uploaded as a .csv file (template is available online) or entered individually.
Continuing Education and Renewal
All Minnesota radon professional licenses are valid for 1 year from the date of issuance. Professionals must apply to renew their measurement license at least 30 days before the license expires.
In order to renew a measurement license, individuals are required to complete 8 hours of continuing education approved by MDH. Classes approved by NRPP or NRSB are automatically accepted.
The Indoor Air Unit offers Minnesota specific radon classes online at the MDH Learning Center. All classes are free and are available to take at your convenience. You will need to create a username and password to enroll in courses at MDH Learning Center. Certificates and a record of classes taken will be available on the website under your username. For assistance with getting started, finding, and enrolling in classes, refer to the MDH Learning Center Quick Reference Guide (PDF).
Standards of Conduct and Work Practices
Radon measurement 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
- Maintain radon test and calibration records for 3 years
- Not interfere with MDH inspection or audit
- Comply with ANSI/AARST protocols for conducting radon measurements in homes, multifamily buildings, and schools/large commercial buildings
- Make available, to MDH, records, equipment, addresses, property owners and residents, and employees