Union Bank of California:

WHAT:           Keitaro Matsuda, senior economist for Union Bank of
                California, today released his September 2007 Economic
                Report focusing on the Pacific Northwest economy. The
                report, titled "The Pacific Northwest among the
                Healthiest Housing Markets in the Nation," is part of
                a monthly series produced by Matsuda on the
                California, Pacific Northwest and United States
                economies.

WHY:            The September 2007 report discusses economic factors
                at play in Washington and Oregon, including:

                 -- Brisk home price appreciation, with Wenatchee,
                    Washington topping the national charts with 23.5%
                    in the second quarter.
                 -- Lowest subprime mortgage delinquency ratios in
                    country.
                 -- Payroll growth at or above national average, with
                    robust growth in service and government sectors.
                 -- Growing construction sector, particularly in
                    nonresidential building.

WHO:            Keitaro Matsuda has served as senior economist for
                Union Bank of California since 1997. He monitors
                economic trends and developments for Union Bank
                management and customers. Matsuda is also a member of
                the economic advisory committee of the American
                Bankers Association. Union Bank of California, the
                wholly owned subsidiary of UnionBanCal
                Corporation (NYSE:UB), provides a broad range of
                financial services to consumers, small businesses,
                middle market and large corporations.

AVAILABILITY:   The September 2007 Economic Report is available upon
                request.

INTERVIEW:      Keitaro Matsuda is available for interviews to share
                his insights about local, state and national
                economies. Please contact Katie Pandes to schedule an
                appointment.

Union Bank of California
Katie Pandes, 415-765-2617
katie.pandes@uboc.com
Joanne Curran, 213-236-5017
joanne.curran@uboc.com