The Environmental Protection Agency (EPA) is approving a site- specific state implementation plan (SIP) revision in Washington County, Minnesota, for Saint Paul Park Refining Co. LLC (Saint Paul Park). This revision includes changes to the ownership and facility name, removal of the ability to burn refinery oil, addition of a new unit, and updates to the modeling parameters for the facility. EPA is approving the SIP revision because it meets Clean Air Act (CAA) section 110(l) requirements.