Investor Presentaiton

Patoka to St. James: Capline Reversal Patoka Current Status In-service as of Jan-2022 ■ Initial throughput ~100mb/d, with additional capacity to meet growth in Canadian production Project Overview Capline System (other Plains assets in grey) ☐ Reversal of 40" pipe to southbound service Capline St. James Origin: Patoka, Illinois ■ Destination: St. James, Louisiana ■ PAA JV ownership: ~54% (non-operated equity interest asset) ■ Other JV partners: MPC & BP H 39

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