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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                  SCHEDULE 14A


           PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES
                      EXCHANGE ACT OF 1934 (AMENDMENT NO. )


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                             FIRST FINANCIAL BANCORP
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                (Name of Registrant as Specified In Its Charter)


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                             FIRST FINANCIAL BANCORP


                           P R E S S   R E L E A S E


FOR IMMEDIATE RELEASE                                          SEPTEMBER 8, 2004


Contact Person:
Leon Zimmerman
President and CEO
(209) 367-2000


            FIRST FINANCIAL BANCORP TO JOIN PLACER SIERRA BANCSHARES


Lodi, Calif. (Business Wire) -September 8, 2004- First Financial Bancorp (OTCBB:
"FLLC" - $324.1  million in assets) the parent  company of Bank of Lodi, N.A and
Placer  Sierra  Bancshares,  Sacramento,  California  (NasdaqNM:  "PLSB"  - $1.4
billion in assets)  today  announced  the signing of a definitive  agreement for
Placer  Sierra to acquire  First  Financial  in an all cash deal valued at $50.0
million or $25.40 per share.

Upon completion of the transaction, the combined company will become the largest
community bank in Central  California,  with approximately $1.8 billion in total
assets. The acquired branches will operate under the brand name of Bank of Lodi,
a division of Placer Sierra Bank.

The $50.0  million  purchase  price  represents  227% of tangible book value and
28.2x trailing-four-quarters' earnings.

The  boards of both  companies  approved  the  transaction,  which is subject to
approval by First  Financial's  stockholders,  as well as  regulators  and other
customary conditions of closing. Subject to satisfaction of conditions set forth
in the  Agreement,  it is estimated that the closing of the Merger will occur in
the fourth quarter of 2004.

Ben Goehring,  Chairman of the Board of First Financial Bancorp,  commented, "We
are very pleased to join forces with Placer Sierra  Bancshares.  Given  Placer's
57-year history of providing superior community banking in Northern  California,
this  transaction  will reinforce and  strengthen our strong  community-oriented
philosophy  in the  marketplace.  Our  board of  directors  believes  that  this
transaction  is in the best  interest  of our  shareholders,  and  provides  our
employees  and  community  with an expanded  line of  competitive  products  and
services.





" First Financial Bancorp's President and Chief Executive Officer Leon Zimmerman
said, "We are very  enthusiastic to have identified  Placer Sierra as our merger
partner.  Not only  have we  achieved  an  excellent  financial  result  for our
shareholders, but we have found a fine cultural fit for our employees, customers
and communities. We are confident that Placer Sierra will be a friendly employer
for our dedicated  staff while  continuing  the customer and  community  service
focus of Bank of Lodi."

First Financial Bancorp used RBC Capital Markets as its financial  adviser,  and
Bingham  McCutchen  served as legal  counsel.  Downey Brand LLP  provided  legal
counsel to Placer Sierra Bancshares.

ABOUT FIRST FINANCIAL BANCORP

First  Financial  Bancorp is the parent of Bank of Lodi,  N.A., a locally  owned
community bank formed in 1982. Bank of Lodi, N.A. offers financial  services via
the web at www.bankoflodi.com,  by phone at 888-265-8577, at any one of its nine
branches  located  in the  communities  of Lodi,  Woodbridge,  Lockeford,  Galt,
Plymouth,  San Andreas, Elk Grove, Folsom, and Sacramento or its loan production
office located in Folsom, California.

ABOUT PLACER SIERRA BANCSHARES

Placer Sierra Bancshares is a  California-based  bank holding company for Placer
Sierra  Bank,  a  California  state-chartered  commercial  bank.  Through its 23
Northern  California  branches,  Placer  Sierra  Bank  serves a five county area
including  Placer,  Sacramento  and El Dorado  counties,  commonly  known as the
greater Sacramento  metropolitan region, and the adjacent counties of Sierra and
Nevada. Through its nine Southern California branches, Placer Sierra Bank serves
both Los Angeles and Orange counties.  Placer Sierra Bank provides its customers
the resources of a large financial institution together with the resourcefulness
and superior  customer service of a community bank.  Placer Sierra Bank offers a
broad array of deposit  products and services for both  commercial  and consumer
customers,  including electronic banking,  cash management services,  electronic
bill payment and investment  services with an emphasis on  relationship  banking
and focus on  generating  low cost  deposits.  In addition,  Placer  Sierra Bank
provides competitive loan products such as commercial loans and lines of credit,
commercial real estate loans, Small Business  Administration loans,  residential
mortgage loans, home equity lines of credit and construction loans.





THIS PRESS  RELEASE  CONTAINS  FORWARD-LOOKING  STATEMENTS  WITH  RESPECT TO THE
FINANCIAL  CONDITION,  RESULTS OF  OPERATION  AND  BUSINESSES  OF PLACER  SIERRA
BANCSHARES  AND FIRST  FINANCIAL  BANCORP  WITHIN  THE  MEANING  OF THE  PRIVATE
SECURITIES  LITIGATION REFORM ACT OF 1995. THESE INCLUDE  STATEMENTS THAT RELATE
TO FUTURE  FINANCIAL  PERFORMANCE  AND  CONDITION,  AND PENDING  MERGERS.  THESE
FORWARD-LOOKING  STATEMENTS  INVOLVE  CERTAIN RISKS AND  UNCERTAINTIES,  MANY OF
WHICH ARE BEYOND THE COMPANY'S CONTROL. FACTORS THAT MAY CAUSE ACTUAL RESULTS TO
DIFFER  MATERIALLY FROM THOSE  CONTEMPLATED BY SUCH  FORWARD-LOOKING  STATEMENTS
INCLUDE,  AMONG OTHERS:  (1) THE RECEIPT OF REGULATORY AND SHAREHOLDER  APPROVAL
FOR THE ACQUISITION;  (2) THE SUCCESS OF PLACER SIERRA BANCSHARES AT INTEGRATING
FIRST FINANCIAL  BANCORP INTO ITS  ORGANIZATION  AND ACHIEVING THE TARGETED COST
SAVINGS;  (3)  DETERIORATION  IN GENERAL ECONOMIC  CONDITIONS,  INTERNATIONALLY,
NATIONALLY OR IN THE STATE OF  CALIFORNIA;  (4) INCREASED  COMPETITIVE  PRESSURE
AMONG FINANCIAL SERVICES COMPANIES; (5) CHANGES IN THE INTEREST RATE ENVIRONMENT
REDUCING  INTEREST  MARGINS OR INCREASING  INTEREST RATE RISK; (6) THE IMPACT OF
TERRORIST  ACTS OR MILITARY  ACTIONS;  AND (7) OTHER  RISKS  DETAILED IN REPORTS
FILED BY PLACER SIERRA  BANCSHARES WITH THE SECURITIES AND EXCHANGE  COMMISSION.
FORWARD-LOOKING  STATEMENTS  SPEAK ONLY AS OF THE DATE THEY ARE MADE, AND PLACER
SIERRA  BANCSHARES  DOES NOT UNDERTAKE TO UPDATE  FORWARD-LOOKING  STATEMENTS TO
REFLECT  CIRCUMSTANCES  OR EVENTS THAT OCCUR AFTER THE DATE THE  FORWARD-LOOKING
STATEMENTS ARE MADE.

This  communication is not a solicitation of a proxy from any security holder of
First Financial Bancorp. However, First Financial Bancorp, and its directors and
executive  officers and certain other members of its  management  and employees,
may be  deemed  to be  participants  in the  solicitation  of  proxies  from the
shareholders  of  First  Financial   Bancorp  in  connection  with  the  merger.
Information about First Financial Bancorp, Placer Sierra Bancshares, the merger,
the persons  soliciting proxies in the merger and their interests in the merger,
the  directors  and  executive  officers  of First  Financial  Bancorp and their
ownership in First Financial Bancorp stock and related matters will be set forth
in a proxy statement relating to the shareholders  meeting to be held to approve
the merger.  Security  holders should read the proxy  statement  because it will
contain important information. The proxy statement will be available in the near
future.

Also, you will be able to obtain the proxy  statement and other  documents filed
by First  Financial  Bancorp with the SEC free of charge at the SEC's website at
http://www.sec.gov.  These  documents will also be available free of charge from
Allen R.  Christenson,  Executive  Vice President and Chief  Financial  Officer,
First Financial Bancorp,  701 South Ham Lane, Lodi,  California 95242 and on the
Company's website at http://www.bankoflodi.com.