Plains All American Pipeline is Proceeding with Construction of Cactus II Pipeline

Will Add Up to 585,000 Barrels Per Day of Permian Basin Pipeline
Takeaway Capacity

HOUSTON–(BUSINESS WIRE)–A subsidiary of Plains All American Pipeline, L.P. (NYSE: PAA)
today announced that it has received sufficient binding commitments on
its initial open season (which closed today) and that it is proceeding
with construction of a new pipeline system from the Permian Basin to the
Corpus Christi/Ingleside area (the “Cactus II Pipeline”). Permitting,
right-of-way and procurement activities are underway, and subject to
receipt of necessary permits and regulatory approvals, the Cactus II
Pipeline is targeted to be operational in the third quarter of 2019.

The Cactus II Pipeline includes a combination of existing pipelines and
two new pipelines. The first new pipeline will extend from Wink South to
McCamey, TX, and the second pipeline will extend from McCamey to the
Corpus Christi/Ingleside area.

PAA has also received sufficient customer interest to conduct a second
binding open season related to Cactus II Pipeline. Origin points will be
Orla, Wink South, Midland, Crane and McCamey, TX. This open season
provides an opportunity for additional shippers to enter into
transportation services agreements that provide for long-term crude oil
transportation on Cactus II Pipeline. Based on market demand, this
second open season will include additional committed tariff rate
structures, but is otherwise consistent with the terms of the first open
season.

Additional information is contained in a Notice of Open Season that is
posted on our website at https://www.plainsallamerican.com/customer-center/pipeline-tariffs/open-seasons.

Interested parties should contact Kevin Snodgrass at 713-646-4616. As
described in the Notice of Open Season, interested entities must sign a
confidentiality agreement before receiving the open season documents.
The second open season begins on January 22, 2018 at 5 p.m. CT and will
end at 5 p.m. CT on February 21, 2018.

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"),
and natural gas. 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 5 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.

Contacts

Plains All American
Investors:
Brett Magill,
(866) 809-1291
Manager, Investor Relations