Exhibit 99.1

                Pacific Energy Partners, L.P. Announces
      Resolution of Rate Complaint with Sinclair Oil Corporation


    LONG BEACH, Calif.--(BUSINESS WIRE)--June 10, 2003--Pacific Energy
Partners, L.P. (NYSE:PPX) (the "Partnership") announced that an
Agreement has been signed between Rocky Mountain Pipeline System LLC
("RMPS"), a wholly-owned subsidiary of the Partnership, and Sinclair
Oil Corporation ("Sinclair").
    The Agreement, which settles various rate matters being contested
by Sinclair and RMPS before the Federal Energy Regulatory Commission
("FERC"), covers shipments of crude oil on RMPS' Western Corridor
pipeline system that originate at the Canada-U.S. border or Cutbank,
Mont., and are delivered to Casper or Guernsey, Wyo. RMPS will
implement a new tariff rate structure for these long-haul shipments
that will provide, for a period of two years, a volume-tiered rate
between $1.32 per barrel and $1.10 per barrel, compared to the current
fixed rate of $1.32 per barrel. The new tariff will become effective
on July 1, 2003, subject to FERC approval.
    RMPS acquired the Western Corridor pipeline system together with
the Salt Lake City Core pipeline system on March 1, 2002. On March 19,
2002, RMPS filed revised tariffs with the FERC that reduced the rates
charged for interstate transportation service on the Western Corridor
system. As previously disclosed in the Partnership's SEC filings,
Sinclair filed a complaint with the FERC on April 15, 2002, which,
among other things, challenged RMPS's rates for the transportation of
crude oil on the Western Corridor system. On July 22, 2002, RMPS filed
an application with the FERC seeking authority to charge market-based
rates, which, if granted, would have allowed RMPS to set its Western
Corridor system tariff rates in response to competitive forces, rather
than by reference to the cost of service. Under this Agreement,
Sinclair will withdraw its cost-of-service complaint, and RMPS will
withdraw its application for market-based rates, which it may not
re-file for a period of two years, subject to certain exceptions.
    The new tariff will maintain the current $1.32 per barrel rate if
long-haul volumes over the course of a quarter average less than
10,000 bpd. It will, however, provide a graduated reduction of rates
as shipments increase to several prescribed levels above 10,000 bpd,
as measured over each quarter, with the rate decreasing to its lowest
level of $1.10 per barrel for all shipments during any quarter in
which the volume equals or exceeds an average of 18,000 bpd. RMPS
expects that increased volumes will result from the lower rates, and
that RMPS will realize increased aggregate revenue as its customers
benefit from lower per-barrel transportation costs.
    Irv Toole, President and Chief Executive Officer, said, "We
believe this Agreement provides a win-win solution for our customers
and for the Partnership, and will provide our customers with an
opportunity to benefit from the lower tariff structure. We expect to
transport higher volumes of crude oil on the Western Corridor pipeline
system as a result of our new rates and as demand in the Rocky
Mountain region continues to increase. In addition, as domestic
production in the Rocky Mountain area declines, we believe there will
be increased imports of crude oil from Alberta, Canada, to Rocky
Mountain refineries."
    Pacific Energy Partners, L.P., a Delaware limited partnership
headquartered in Long Beach, Calif., owns and operates crude oil
midstream assets located in California and the Rocky Mountain region
with over 3,000 miles of pipelines and 4.6 million barrels of storage
capacity. The Partnership is engaged in gathering, blending,
transporting, storing and distributing crude oil. The Partnership
generates revenues primarily by charging tariff rates for transporting
crude oil through its pipelines.

    This news release includes "forward-looking" statements within the
meaning of Section 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended. All
statements other than statements of historical fact included or
incorporated herein may constitute forward-looking statements. Words
such as "expect," "will" and similar expressions identify these
forward-looking statements. Although the Partnership believes that the
expectations reflected in the forward-looking statements are
reasonable, it can give no assurance that such expectations will prove
to be correct. The forward-looking statements involve risks and
uncertainties that affect the Partnership's operations and financial
performance. Among the factors that could cause results to differ
materially are those risks discussed in the Partnership's filings with
the Securities and Exchange Commission, including our Annual Report on
Form 10-K for the year ended December 31, 2002.


    CONTACT: Pacific Energy Partners, L.P.
             Thomas L. Lambert, 562/728-2871
             Fax: 562/728-2881