FOR IMMEDIATE RELEASE

Plains All American Pipeline Files Applications to Replace Lines 901 and 903

SANTA BARBARA, Calif., August 16, 2017 –This week Plains All American Pipeline, L.P., (Plains) is submitting permit applications to Santa Barbara and San Luis Obispo Counties for the replacement of their existing Lines 901 and 903, in an effort to restore crude oil pipeline transportation service in Santa Barbara, San Luis Obispo and Kern Counties. The permit application for Kern County will follow in the coming weeks. The replacement pipelines will largely follow the approximately 130-mile route of the existing pipeline system, and will include a number of operational and safety features to meet or exceed local, state and federal requirements.

“Restoring crude oil transportation service to Santa Barbara, San Luis Obispo and Kern Counties will re-establish a critical link in the region’s energy infrastructure, reducing the state’s reliance on crude oil produced outside California,” stated Willie Chiang, U.S. Chief Operating Officer of Plains All American.

Plains will continue to work closely with the counties and the state as part of their comprehensive permitting process. This includes the preparation and submittal of documents as required under CEQA (California Environmental Quality Act) and NEPA (the National Environmental Policy Act), which set forth standards to ensure that impacts to people and the environment are minimized and provides opportunities for public involvement. Plains will also engage with key community stakeholders, seeking their input and discussing the process for permitting the replacement pipelines. While Plains’ current plans are to pursue the replacement project and keep the existing lines shut down, repairing and restarting the existing pipelines remains a viable alternative should the permitting process for the replacement pipelines become excessively delayed or prove unsuccessful.

Plains is committed to designing, constructing, operating and maintaining the replacement pipelines in a safe and reliable manner. Once fully permitted, construction of the replacement pipelines will support more than 400 construction jobs, and 10 permanent jobs once in operation.

The existing pipelines between Las Flores and Pentland have been purged of all crude oil and shut down since mid-2015. More information is available at www.PlainsLine901R.com.

Forward Looking Statements

This press release may include certain statements concerning expectations for the future that are forward-looking statements as defined by federal law. Such forward-looking statements are subject to a variety of known and unknown risks, uncertainties, and other factors that are difficult to predict and many of which are beyond management’s control. An extensive list of factors that can affect future results are discussed in PAA’s Annual Report on Form 10-K and other documents filed from time to time with the Securities and Exchange Commission. PAA undertakes no obligation to update or revise any forward-looking statement to reflect new information or events.

Plains All American Pipeline, L.P. is a publicly traded master limited partnership that owns and operates midstream energy infrastructure and provides logistics services for crude oil, natural gas liquids ("NGL"), natural gas and refined products. PAA owns an extensive network of pipeline transportation, terminalling, storage and gathering assets in key crude oil and NGL producing basins and transportation corridors and at major market hubs in the United States and Canada. On average, PAA handles over 4.7 million barrels per day of crude oil and NGL in its Transportation segment. PAA is headquartered in Houston, Texas. More information is available at www.plainsallamerican.com.

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