EPA is taking direct final action on amendments to the national perchloroethylene air emission standards for dry cleaning facilities promulgated on July 27, 2006, under the authority of section 112 of the Clean Air Act. This action amends rule language to correct applicability cross references that were not correctly amended between the most recent proposed and final rule revisions, and to clarify that condenser performance monitoring may be done by either of two prescribed methods (pressure or temperature), regardless of whether an installed pressure gauge is present. Without these amendments, new area sources could erroneously be required to perform monitoring that was proposed for only major sources, and installed condenser performance gauge readings could be required of sources when a prescribed temperature method is just as valid for compliance purposes.