Radon-Reporter-2026-Issue-1FINAL

10 | APRIL 2026 assessed under this certification have been narrowed to installing soil depressurization mitigation system installations according to the design created by the supervising RMS and reviewing the installation with responsible parties and providing them with the information packet. The Mitigation Installer will no longer be responsible for understanding radon entry behavior and identifying radon entry pathways, communicating with clients about radon risk, or reviewing the work plan with the client: these are the sole responsibility of the RMS. The scope of the Mitigation Installer credential has, however, been expanded to allow for soil depressurization mitigation system installation in single family and commercial or other large buildings for radon or vapor intrusion mitigation purposes. MIs must complete the 8-hour training course before registering for the examination. In the past, the course was required for certification but was not a prerequisite for sitting for the exam. The examination, which has been reduced from 85 scored questions to 40, assesses knowledge of the tasks MIs perform when installing a mitigation system. MIs will now be eligible for category II continuing education for recertification. Previously, RMIs were limited to completing category I CE for recertification, which includes traditional lecture-type courses with a quiz to demonstrate proficiency. Under the new certification, MIs may earn a maximum of 4 CEs from category II which includes professional activities such as attending professional conferences, meetings or events, delivering professional presentations, and authoring articles. The addition of category II continuing education promotes engagement in the profession and an opportunity to enhance the MI’s knowledge through nontraditional methods. Upon recertifying, MIs must agree to the NRPP Code of Ethics/Certification Terms Agreement and must confirm the RMS that they reported for initial certification is still their supervisor (or report a new one). Traditionally these have only been required to be submitted for initial certification. Requiring individuals to sign the NRPP Code of Ethics/Certification Terms Agreement for recertification reminds them of their responsibility for professional conduct. And reconfirming the supervising RMS is a way to ensure that certification requirements continue to be fulfilled and that MIs are adequately supervised and working within the scope of their certification. Changes to the Radon Mitigation Specialist Certification Radon Mitigation Specialists design and install radon mitigation systems to reduce radon gas levels in single-family structures and individual dwellings within a shared structure that contain no more than four attached dwelling units on a contiguous foundation. They evaluate radon levels, assess the source(s) of radon entry, and customize the application of radon mitigation technologies to a particular structure to achieve effective radon reduction. They communicate with inspecting bodies and occupants, homeowners, and others who will operate the system, providing instructions for ongoing maintenance. They may also provide ongoing monitoring and maintenance to ensure the system continues to function properly and keeps radon levels low. For initial certification under the revalidated program, RMSs will complete a 32-hour training course, pass a 160- item examination, complete a hands-on field experience activity, and agree to the NRPP Code of Ethics/Certification Terms Agreement and QA/QM Attestation Form. RMSs will recertify every two years by completing 24 hours of continuing education. Of these 24 hours, a four-hour review course covering the SGM standard is required. The remaining 20 hours of continuing education may be earned from category I continuing education courses or category II activities up to a maximum of four CEs for the latter. RMSs may earn up to 4 CEs for completing nontechnical coursework. RMSs will also agree to the NRPP Code of Ethics/Certification Terms Agreement and the QA/QM Attestation Form. Changes from the current RMS certification include the following: The RMS candidate must complete a 32-hour mitigation training course prior to registering for the examination. Although the course length has increased from the 24-hour mitigation course currently required, the 32- hour course focuses on not only mitigation but also the essential measurement knowledge required for mitigation work, so the separate 16-hour measurement course is no longer required. RMS certification will require the candidate to complete a hands-on fieldwork activity that involves installing a mitigation system under the direction of an experienced mitigation specialist. Options for meeting this requirement are currently in development and may include a virtual home that the candidate must navigate through, investigate and ultimately mitigate. The exam has increased to 160 scored items from 150 and is no longer a two-part exam. Currently, part 1 of the exam consists of 85 RMI questions and part 2 consists of the RMS-specific questions. Under the new certification program, RMS candidates must pass one exam that focuses on knowledge of inspection, diagnostics, system design, soil depressurization, mitigation system installation, and post mitigation activities. The new exam will focus more heavily on diagnostics than the current exam (28% of the exam versus 8%). Although the number of continuing education credits required for RMS certification has doubled, options for earning CE have been expanded. A RMS will be allowed to take courses from organizations with expertise in specific areas, such as OSHA, ASHRAE, and others. Although these courses will not be required to go through PROFICIENCY