To be listed on Wisconsin’s website as an individual with radon measurement proficiency, you have to take an initial certification course (approved by NRPP or AARST) and Continuing Education (approved by NRPP and AARST). For details, visit Wisconsin’s website.
InterNACHI’s “Advanced Radon Measurement Service Provider” course (free & online for members) is approved by NRPP and AARST for both Entry Level Certification (INACH-1) and Continuing Education (INACH-401). Not a member? Join now.
Everything you need to be successful in Wisconsin is at http://nachi.org/wisconsin