Sparhawk Truck and Trailer, Inc., (Sparhawk) entered into a Consent Agreement and Final Order (CAFO) resolving an action under Section 205(c) of the Clean Air Act (CAA). This CAFO alleges that Sparhawk knowingly removed and/or rendered inoperative devices or elements of design that were installed on at least 19 heavy-duty diesel engines (HDDE) trucks to comply with emission standards promulgated under Title II of the CAA, in violation of Section 203(a)(3)(A)-(B) of the CAA. The CAFO requires Sparhawk to pay a civil penalty of $91,000 and to return all modified trucks owned by Sparhawk (11 of the 19 modified trucks) to be either permanently decommissioned or returned to factory settings with reinstalled emission control devices. Additionally, Sparhawk must contact the owners of the 8 remaining modified trucks using a recall letter offering to reinstall emission control devices at no cost. After receiving EPA's Notice of Violation, Sparhawk spent over $1.3 million to replace 10 Model Year 2011 or older trucks from its fleet with Model Year 2019 trucks, equipped with the latest emission control technologies.