Valero and Ultramar Diamond Shamrock to Donate $500,000 to Red Cross

    SAN ANTONIO, Sept. 13 Valero Energy Corporation and
Ultramar Diamond Shamrock Corporation (UDS), through their UDS Foundation,
announce that they have teamed up to contribute $500,000 to the American Red
Cross to assist with the massive relief efforts needed as a result of
Tuesday's terrorist attacks in New York and Washington, D.C.  The two San
Antonio-based refining and marketing companies announced in May plans for a
merger which is expected to be completed later this year.

    "This is a time for Americans to clearly demonstrate that we pull together
in times of need," said Bill Greehey, chairman and CEO of Valero.  "It's time
to show the world that while terrorists may attempt to strike fear in the
hearts of Americans, we're not afraid.  And, it's time to show the world that
this tragedy is only going to make us stronger.  We should all do our part and
show the world what Americans are made of."

    "We may be separate companies, but we're absolutely unified in agreeing
it's our responsibility to help the thousands of individuals and families who
were impacted by this tragedy," said Jean Gaulin, chairman and CEO of UDS.
"It's critical that we all do our part to support our neighbors in our
national community."

    In addition to the corporate contributions, the two companies are also
collecting individual pledges from their employees and conducting food and
blood drives.