STANDARDS OF CONDUCT

Subpart 1. Radon measurement and radon mitigation professional standards. A radon measurement professional and a radon mitigation professional must: A. operate according to a quality assurance and quality control plan submitted to the commissioner under parts 4620.7200 and 4620.7300 ; B. use a continuous monitor or passive device approved by a national radon proficiency program; C. notify the commissioner in writing within 30 days of any change to the license application information provided under parts 4620.7200 and 4620.7300 ; D. maintain proof of a valid license issued under this chapter at all times while at a project site; E. use the services of a radon laboratory licensed by the commissioner under part 4620.7350 to analyze radon samples; F. maintain records for three years of each radon test performed; G. maintain radon measurement device calibration records for three years. Device calibration records include the: (1) manufacturer of a calibrated device; (2) model number of a calibrated device; (3) serial number of a calibrated device; (4) date of instrument calibration; and (5) name of the calibration facility; and H. not interfere with the commissioner's inspection or audit of any radon measurement or mitigation project. Subp. 2. Radon mitigation company and sole proprietor radon mitigation professional standards. A radon mitigation company and a radon professional engaged as a sole proprietor with no employees and no subcontractors who are licensed radon mitigation professionals must: A. verify that employees directly involved in radon mitigation complete an NRPP-approved training course or a minimum of eight hours of basic mitigation training provided by a licensed radon mitigation professional. The training must be: (1) provided before working on a mitigation project; (2) performed annually; and (3) documented by having trainees acknowledge with their written signature that they have received training meeting the requirements of this part; B. maintain a record of training required under item A for three years; C. verify that all of its mitigation professionals, employees, and subcontractors comply with parts 4620.7000 to 4620.7950 ; D. verify that radon mitigation is performed with on-site supervision of a licensed mitigation professional; E. maintain records for three years of each radon mitigation performed, including records required under parts 4620.7500 and 4620.7600 , subpart 2; F. notify the commissioner in writing within 30 days of any change to the license application information provided under part 4620.7250 ; and G. obtain a permit from the local unit of government when the installation of a radon mitigation system alters any structural component of the building framing system. A permit is not required when only the rim joist area is penetrated. Subp. 3. Radon analysis laboratory standards. An approved radon analysis laboratory must: A. maintain current documentation required under part 4620.7350 ; B. maintain the certification status of a national radon proficiency program; C. notify the commissioner in writing within 30 days of any change to the license application information provided under part 4620.7350 ; and D. maintain the status requirement of part 4620.7350 , subpart 2, item H. If status is no longer current, the commissioner shall suspend the radon laboratory license under Minnesota Statutes, section 144.99, subdivision 9 .