The 1988 Indoor Radon Abatement Act (IRAA) required the U.S. Environmental Protection Agency (EPA) to develop a voluntary program to evaluate and provide information on contractors who offer radon control services to homeowners. The Radon Contractor Proficiency (RCP) program was established to fulfill this portion of the IRAA. In 1991, the EPA published "Interim Radon Mitigation Standards" as initial guidelines for evaluating the performance of radon mitigation contractors under the RCP program. The effectiveness of the basic radon mitigation techniques proposed in the interim standards has been validated in field applications throughout the country. This experience is the basis for the more detailed and final Pennsylvania Radon Mitigation Standards.
The radon mitigation standards provide radon mitigation contractors with uniform standards to ensure quality and effectiveness in the design, installation, and evaluation of radon mitigation systems in residential buildings.