Marathon Petroleum operates two Gulf Coast refineries — Galveston Bay in Texas City and Garyville in Louisiana — with combined capacity of approximately 700,000 barrels per day.
Galveston Bay is one of the largest refineries in the US at 585,000 barrels per day. Garyville in Louisiana processes approximately 256,000 barrels per day with complex configuration.
Marathon is a buyer of turnaround services, inspection and integrity programs, rotating equipment, and process chemicals across both Gulf Coast sites. MPC manages procurement at the corporate level in Findlay, Ohio with site-level operational influence.
Site managers and their reliability, maintenance, and turnaround teams hold primary operational vendor influence. MPC corporate supply chain manages strategic category agreements.
See who controls budget, who writes specs, and how to reach them — with warm path intelligence and career movement signals.
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