MPLX transports, stores and distributes crude oil, refined products and other hydrocarbon-based products, primarily in the Midwest and Gulf Coast regions of the U.S. Assets consist of a network of wholly- and jointly-owned common carrier crude oil and refined product pipeline systems and associated storage assets, refined product terminals, storage caverns and an inland marine business.

Our pipeline network includes approximately 8,084 miles of pipeline across 17 states. We own and operate 59, partially own two and lease one light product terminals in the Midwest, Gulf Coast and Southeast regions of the United States. Our terminal facilities are used for the receipt, storage, blending, additization, handling and   delivery of refined petroleum products. We have a butane cavern in West Virginia and eight active butane and propane storage caverns in Michigan.

In addition, MPLX provides fuels distribution services to MPC and owns refining logistic assets consisting of tanks with approximately 56 million barrels as well as refinery docks, loading racks and associated piping.

MPLX’s marine operations include 18 owned towboats as well as 208 owned and 24 leased barges that transport refined products and crude oil on the Ohio, Mississippi and Illinois rivers and their tributaries and inter-coastal waterways. Our marine repair facility is a full-service marine shipyard located on the Ohio River adjacent to MPC’s Catlettsburg refinery.

We also have interest in various joint-interests, including LOOP LLC (Louisiana Offshore Oil Port), the only U.S. deep water oil port located offshore in Louisiana, which offloads crude oil from marine vessels destined for onshore storage and pipeline transport.