In February 1986, the U.S. Environmental Protection Agency (EPA) established the Radon Measurement Proficiency (RMP) Program to assist the public in identifying organizations capable of providing reliable radon measurement services. In December 1991, EPA announced the new individual proficiency listing category in the RMP Program. Individuals applying for this new listing status must demonstrate knowledge of radon measurement fundamentals by passing a written proficiency examination, maintain affiliation with an RMP listed organization, and meet other program requirements. The report lists those individuals who have met the requirements of the RMP Program as of December 31, 1993. These requirements are designed to provide minimum proficiency criteria for individuals who provide radon measurement services on-site in a residential environment.