The U.S. Environmental Protection Agency, Region 5, is providing notice of intent to file a proposed Consent Agreement and Final Order (CAFO) against Marathon Pipe Line LLC (Respondent) for alleged violations of Section 311 of the Clean Water Act (CWA), 33 U.S.C. § 1321. Specifically, EPA alleges that Respondent violated the CWA by discharging oil into navigable waters of the United States. Respondent operates the Robinson-Mt. Vernon 10-inch pipeline, which transports petroleum products from the Marathon LP refinery in Robinson, Illinois to the MPLX Terminals LLC terminal in Mt. Vernon, Indiana. Beginning April 16, 2016, the Robinson-Mt.Vernon 10-inch pipeline failed where the pipeline crosses the Wabash River near Crawleyville, Indiana, causing the release of 35,868 gallons of ultra-low sulfur diesel fuel into the Wabash River. The CAFO will resolve only Respondent's liability for federal civil penalties for the alleged violations. Pursuant to the CAFO, Respondent has agreed to pay a penalty of $226,000 to resolve EPA's federal claim for civil penalties.