Approval of the Clean Air Act, Section 112(l), Authority for Hazardous Air Pollutants: Perchloroethylene Air Emission Standards for Dry Cleaning Facilities: State of Maine Department of Environmental Protection

Pursuant to section 112(l) of the Clean Air Act ("CAA") and Federal regulations promulgated thereunder, the Maine Department of Environmental Protection ("ME DEP") submitted a request for approval to implement and enforce the amended "Chapter 125: Perchloroethylene Dry Cleaner Regulation" (Maine Dry Cleaner Rule) as a partial substitution for the amended National Emissions Standards for Hazardous Air Pollutants for Perchloroethylene Dry Cleaning Facilities ("Dry Cleaning NESHAP"), as it applies to area sources. EPA has reviewed this request and has determined that the amended Maine Dry Cleaner Rule satisfies the requirements necessary for partial substitution approval. Thus, EPA is hereby granting ME DEP the authority to implement and enforce its amended Maine Dry Cleaner Rule in place of the Dry Cleaning NESHAP for area sources, but EPA is retaining its authority with respect to major source dry cleaners and dry cleaners installed in a residence between July 13, 2006, and June 24, 2009. This approval makes the amended Maine Dry Cleaner Rule Federally enforceable.