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Investor Presentaiton

Context for Emissions Estimations & Comparisons Emissions estimation methodologies vary across the industry - - - Plains reported comprehensive emissions for the full enterprise Includes all material activities (i.e. pipeline, trucking, storage, fractionation. and processing) Guidance on emissions estimation metrics (e.g. throughput intensity, Scope 3) continues. to evolve 。 Diversity of Plains' activities present unique considerations for these calculations, as a result, Plains is not currently reporting these metrics We continue to actively engage in the development of estimation standards, considering updates to disclosures as guidance evolves 25

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