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Plains All American Pipeline, L.P. (NYSE: PAA) today announced that it has commenced a public offering of senior notes (the “Notes”). The Partnership intends to use the net proceeds from this offering to repay outstanding borrowings under its commercial paper program and for general partnership purposes. Amounts repaid under the Partnership’s commercial paper program may be reborrowed, as necessary, to fund its ongoing expansion capital program or future acquisitions and investments, or for general partnership purposes.

Citigroup Global Markets Inc.; Mizuho Securities USA Inc.; Mitsubishi UFJ Securities (USA), Inc. and UBS Securities LLC will act as joint book-running managers of the offering.

The Notes will be offered and sold pursuant to an effective shelf registration statement on Form S-3 previously filed with the Securities and Exchange Commission and only by means of a prospectus supplement and accompanying base prospectus. When available, copies of the prospectus supplement and accompanying base prospectus relating to the offering may be obtained from the underwriters as follows:

Citigroup Global Markets Inc. Mizuho Securities USA Inc.
c/o Broadridge Financial Solutions 320 Park Avenue, 12th Floor
1155 Long Island Avenue New York, NY 10022
Edgewood, NY 11717 Attention: Debt Capital Markets Desk
Telephone: (800) 831-9146 Telephone: (866) 271-7403
Mitsubishi UFJ Securities (USA), Inc. UBS Securities LLC
1633 Broadway, 29th Floor 1285 Avenue of the Americas
New York, NY 10019 New York, NY 10019
Attention: Capital Markets Group Attention: Prospectus Specialist
Telephone: (212) 405-7440 Telephone: (888) 827-7275

This news release does not constitute an offer to sell or a solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

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 approximately 4.3 million barrels per day of crude oil and NGL on its pipelines. PAA is headquartered in Houston, Texas.