The Environmental Protection Agency (EPA) is promulgating this direct final rule to correct the final rule published in the Federal Register on March 12, 2004. Specifically, EPA is amending the regulatory text for the definitions of refrigerant and technician. EPA is also amending the prohibition against venting substitute refrigerants to reflect the changes in the definitions. These changes are being finalized to make certain that the regulations promulgated on March 12, 2004 cannot be construed as a restriction on the sales of substitutes that do not consist of an ozone-depleting substance (ODS), such as pure hydrofluorocarbon (HFC) and perfluorocarbon (PFC) substitutes.