25 Pa. Code § 240.305
A certified individual shall have a radon health and safety program to protect himself and firm employees from exposure to radon that, at a minimum, includes minimizing one's time in the building and providing fresh air intake from outside air, when appropriate. The program must include records of each mitigator's exposure to radon during the course of employment. The certified individual shall record the items on the form in Appendix C (relating to radon exposure tracking record) and retain the records for a period of 5 years. Testers and mitigators may not exceed 4 WLM/yr in radon exposure.
25 Pa. Code § 240.305
The provisions of this §240.305 amended under sections 12 and 13 of the Radon Certification Act (63 P.S. §§ 2012 and 2013); section 302 of the Radiation Protection Act (35 P.S. § 7110.302); and section 1920-A of the Administrative Code (71 P.S. § 510.20).
This section cited in 25 Pa. Code § 240.112 (relating to prerequisites for radon mitigation certification).