Pa. Code tit. 25, pt. I, subpt. D, art. V, ch. 240, subch. G, app C
The provisions of this Appendix C issued 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 appendix cited in 25 Pa. Code § 240.305 (relating to health and safety program).