Exhibit 4.3



                             REDWOOD EMPIRE BANCORP,
                                    as Issuer






                                    INDENTURE
                            Dated as of July 22, 2003



                         U.S. BANK NATIONAL ASSOCIATION,
                                   as Trustee




     FIXED/FLOATING RATE JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURES


                                    DUE 2033







1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>




<TABLE>
<CAPTION>
                                TABLE OF CONTENTS
                                                                                                               Page

<S>      <C>               <C>                                                                                  <C>
ARTICLE I. DEFINITIONS............................................................................................1

         Section 1.1.      Definitions............................................................................1

ARTICLE II. DEBENTURES............................................................................................8

         Section 2.1.      Authentication and Dating..............................................................8
         Section 2.2.      Form of Trustee's Certificate of Authentication........................................9
         Section 2.3.      Form and Denomination of Debentures....................................................9
         Section 2.4.      Execution of Debentures................................................................9
         Section 2.5.      Exchange and Registration of Transfer of Debentures....................................9
         Section 2.6.      Mutilated, Destroyed, Lost or Stolen Debentures.......................................11
         Section 2.7.      Temporary Debentures..................................................................12
         Section 2.8.      Payment of Interest and Additional Interest...........................................12
         Section 2.9.      Cancellation of Debentures Paid, etc..................................................14
         Section 2.10.     Computation of Interest...............................................................14
         Section 2.11.     Extension of Interest Payment Period..................................................15
         Section 2.12.     CUSIP Numbers.........................................................................16

ARTICLE III. PARTICULAR COVENANTS OF THE COMPANY.................................................................17

         Section 3.1.      Payment of Principal, Premium and Interest; Agreed Treatment of the Debentures........17
         Section 3.2.      Offices for Notices and Payments, etc.................................................17
         Section 3.3.      Appointments to Fill Vacancies in Trustee's Office....................................18
         Section 3.4.      Provision as to Paying Agent..........................................................18
         Section 3.5.      Certificate to Trustee................................................................19
         Section 3.6.      Additional Sums.......................................................................19
         Section 3.7.      Compliance with Consolidation Provisions..............................................19
         Section 3.8.      Limitation on Dividends...............................................................19
         Section 3.9.      Covenants as to the Trust.............................................................20
         Section 3.10.     Additional Junior Indebtedness........................................................20

ARTICLE IV. SECURITYHOLDERS' LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE....................................20

         Section 4.1.      Securityholders' Lists................................................................20
         Section 4.2.      Preservation and Disclosure of Lists..................................................20

ARTICLE V. REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS UPON AN EVENT OF DEFAULT..................................21

         Section 5.1.      Events of Default.....................................................................21
         Section 5.2.      Payment of Debentures on Default; Suit Therefor.......................................23
         Section 5.3.      Application of Moneys Collected by Trustee............................................24
         Section 5.4.      Proceedings by Securityholders........................................................25
         Section 5.5.      Proceedings by Trustee................................................................25
         Section 5.6.      Remedies Cumulative and Continuing; Delay or Omission Not a Waiver....................25
         Section 5.7.      Direction of Proceedings and Waiver of Defaults by Majority of Securityholders........26
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<TABLE>
<S>      <C>               <C>                                                                                   <C>
         Section 5.8.      Notice of Defaults....................................................................26
         Section 5.9.      Undertaking to Pay Costs..............................................................26

ARTICLE VI. CONCERNING THE TRUSTEE...............................................................................27

         Section 6.1.      Duties and Responsibilities of Trustee................................................27
         Section 6.2.      Reliance on Documents, Opinions, etc..................................................28
         Section 6.3.      No Responsibility for Recitals, etc...................................................28
         Section 6.4.      Trustee,  Authenticating Agent, Paying Agents, Transfer Agents or Registrar May
                           Own Debentures........................................................................29
         Section 6.5.      Moneys to be Held in Trust............................................................29
         Section 6.6.      Compensation and Expenses of Trustee..................................................29
         Section 6.7.      Officers' Certificate as Evidence.....................................................30
         Section 6.8.      Eligibility of Trustee................................................................30
         Section 6.9.      Resignation or Removal of Trustee.....................................................30
         Section 6.10.     Acceptance by Successor Trustee.......................................................31
         Section 6.11.     Succession by Merger, etc.............................................................32
         Section 6.12.     Authenticating Agents.................................................................32

ARTICLE VII. CONCERNING THE SECURITYHOLDERS......................................................................33

         Section 7.1.      Action by Securityholders.............................................................33
         Section 7.2.      Proof of Execution by Securityholders.................................................34
         Section 7.3.      Who Are Deemed Absolute Owners........................................................34
         Section 7.4.      Debentures Owned by Company Deemed Not Outstanding....................................34
         Section 7.5.      Revocation of Consents; Future Holders Bound..........................................34

ARTICLE VIII. SECURITYHOLDERS' MEETINGS..........................................................................34

         Section 8.1.      Purposes of Meetings..................................................................35
         Section 8.2.      Call of Meetings by Trustee...........................................................35
         Section 8.3.      Call of Meetings by Company or Securityholders........................................35
         Section 8.4.      Qualifications for Voting.............................................................35
         Section 8.5.      Regulations...........................................................................36
         Section 8.6.      Voting................................................................................36
         Section 8.7.      Quorum; Actions.......................................................................36

ARTICLE IX. SUPPLEMENTAL INDENTURES..............................................................................37

         Section 9.1.      Supplemental Indentures without Consent of Securityholders............................37
         Section 9.2.      Supplemental Indentures with Consent of Securityholders...............................38
         Section 9.3.      Effect of Supplemental Indentures.....................................................39
         Section 9.4.      Notation on Debentures................................................................39
         Section 9.5.      Evidence of Compliance of Supplemental Indenture to be Furnished to Trustee...........39

ARTICLE X. REDEMPTION OF SECURITIES..............................................................................39

         Section 10.1.     Optional Redemption...................................................................39
         Section 10.2.     Special Event Redemption..............................................................40
         Section 10.3.     Notice of Redemption; Selection of Debentures.........................................40
         Section 10.4.     Payment of Debentures Called for Redemption...........................................41
</TABLE>


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<TABLE>
<S>      <C>               <C>                                                                                  <C>
ARTICLE XI. CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE....................................................41

         Section 11.1.     Company May Consolidate, etc., on Certain Terms.......................................41
         Section 11.2.     Successor Entity to be Substituted....................................................41
         Section 11.3.     Opinion of Counsel to be Given to Trustee.............................................42

ARTICLE XII. SATISFACTION AND DISCHARGE OF INDENTURE.............................................................42

         Section 12.1.     Discharge of Indenture................................................................42
         Section 12.2.     Deposited Moneys to be Held in Trust by Trustee.......................................43
         Section 12.3.     Paying Agent to Repay Moneys Held.....................................................43
         Section 12.4.     Return of Unclaimed Moneys............................................................43

ARTICLE XIII. IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS....................................43

         Section 13.1.     Indenture and Debentures Solely Corporate Obligations.................................43

ARTICLE XIV. MISCELLANEOUS PROVISIONS............................................................................43

         Section 14.1.     Successors............................................................................43
         Section 14.2.     Official Acts by Successor Entity.....................................................43
         Section 14.3.     Surrender of Company Powers...........................................................44
         Section 14.4.     Addresses for Notices, etc............................................................44
         Section 14.5.     Governing Law.........................................................................44
         Section 14.6.     Evidence of Compliance with Conditions Precedent......................................44
         Section 14.7.     Non-Business Days.....................................................................44
         Section 14.8.     Table of Contents, Headings, etc......................................................44
         Section 14.9.     Execution in Counterparts.............................................................45
         Section 14.10.    Separability..........................................................................45
         Section 14.11.    Assignment............................................................................45
         Section 14.12.    Acknowledgment of Rights..............................................................45

ARTICLE XV. SUBORDINATION OF DEBENTURES..........................................................................45

         Section 15.1.     Agreement to Subordinate..............................................................45
         Section 15.2.     Default on Senior Indebtedness........................................................46
         Section 15.3.     Liquidation, Dissolution, Bankruptcy..................................................46
         Section 15.4.     Subrogation...........................................................................47
         Section 15.5.     Trustee to Effectuate Subordination...................................................48
         Section 15.6.     Notice by the Company.................................................................48
         Section 15.7.     Rights of the Trustee; Holders of Senior Indebtedness.................................48
         Section 15.8.     Subordination May Not Be Impaired.....................................................49

Exhibit A         Form of Fixed/Floating Rate Junior Subordinated Deferrable Interest Debenture
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                                       iii
1034360.1
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<PAGE>




         THIS INDENTURE, dated as of July 22, 2003, between Redwood Empire
Bancorp, a California corporation (the "Company"), and U.S. Bank National
Association, a national banking association organized under the laws of the
United States of America, as debenture trustee (the "Trustee").

                                   WITNESSETH:

         WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issuance of its Fixed/Floating Rate Junior Subordinated
Deferrable Interest Debentures due 2033 (the "Debentures") under this Indenture
to provide, among other things, for the execution and authentication, delivery
and administration thereof, and the Company has duly authorized the execution of
this Indenture; and

         WHEREAS, all acts and things necessary to make this Indenture a valid
agreement according to its terms, have been done and performed;

         NOW, THEREFORE, This Indenture Witnesseth:

         In consideration of the premises, and the purchase of the Debentures by
the holders thereof, the Company covenants and agrees with the Trustee for the
equal and proportionate benefit of the respective holders from time to time of
the Debentures as follows:

                                   ARTICLE I.
                                   DEFINITIONS

     Section 1.1. Definitions.  The terms defined in this Section 1.1 (except as
herein otherwise  expressly  provided or unless the context otherwise  requires)
for all purposes of this  Indenture  and of any  indenture  supplemental  hereto
shall have the respective meanings specified in this Section 1.1. All accounting
terms used herein and not expressly  defined shall have the meanings assigned to
such terms in accordance with generally accepted  accounting  principles and the
term "generally accepted accounting principles" means such accounting principles
as are generally  accepted in the United States at the time of any  computation.
The words  "herein,"  "hereof" and "hereunder" and other words of similar import
refer to this Indenture as a whole and not to any particular Article, Section or
other subdivision.

         "Additional Interest" has the meaning set forth in Section 2.11.

         "Additional Junior Indebtedness" means, without duplication and other
than the Debentures, any indebtedness, liabilities or obligations of the
Company, or any Subsidiary of the Company, under debt securities (or guarantees
in respect of debt securities) initially issued after the date of this Indenture
to any trust, or a trustee of a trust, partnership or other entity affiliated
with the Company that is, directly or indirectly, a finance subsidiary (as such
term is defined in Rule 3a-5 under the Investment Company Act of 1940) or other
financing vehicle of the Company or any Subsidiary of the Company in connection
with the issuance by that entity of preferred securities or other securities
that are eligible to qualify for Tier 1 capital treatment (or its then
equivalent) for purposes of the capital adequacy guidelines of the Federal
Reserve, as then in effect and applicable to the Company (or, if the Company is
not a bank holding company, such guidelines applied to the Company as if the
Company were subject to such guidelines); provided, however, that the inability
of the Company to treat all or any portion of the Additional Junior Indebtedness
as Tier 1 capital shall not disqualify it as Additional Junior Indebtedness if
such inability results from the Company having cumulative preferred stock,
minority interests in consolidated subsidiaries, or any other class of security
or interest which the Federal Reserve now or may hereafter accord Tier 1 capital
treatment (including the Debentures) in excess of the amount which may qualify
for treatment as Tier 1 capital under applicable capital adequacy guidelines.

         "Additional Sums" has the meaning set forth in Section 3.6.


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Redwood Empire Bancorp/Indenture
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         "Affiliate" has the same meaning as given to that term in Rule 405 of
the Securities Act or any successor rule thereunder.

         "Authenticating Agent" means any agent or agents of the Trustee which
at the time shall be appointed and acting pursuant to Section 6.12.

         "Bankruptcy Law" means Title 11, U.S. Code, or any similar federal or
state law for the relief of debtors.

         "Board of Directors" means the board of directors or the executive
committee or any other duly authorized designated officers of the Company.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification and delivered to the Trustee.

         "Business Day" means any day other than a Saturday, Sunday or any other
day on which banking institutions in New York City or Hartford, Connecticut are
permitted or required by any applicable law to close.

         "Capital Securities" means undivided beneficial interests in the assets
of the Trust which rank pari passu with Common Securities issued by the Trust;
provided, however, that upon the occurrence and continuance of an Event of
Default (as defined in the Declaration), the rights of holders of such Common
Securities to payment in respect of distributions and payments upon liquidation,
redemption and otherwise are subordinated to the rights of holders of such
Capital Securities.

         "Capital Securities Guarantee" means the guarantee agreement that the
Company enters into with U.S. Bank National Association, as guarantee trustee,
or other Persons that operates directly or indirectly for the benefit of holders
of Capital Securities of the Trust.

         "Capital Treatment Event" means the receipt by the Company and the
Trust of an opinion of counsel experienced in such matters to the effect that,
as a result of the occurrence of any amendment to, or change (including any
announced prospective change) in, the laws, rules or regulations of the United
States or any political subdivision thereof or therein, or as the result of any
official or administrative pronouncement or action or decision interpreting or
applying such laws, rules or regulations, which amendment or change is effective
or which pronouncement, action or decision is announced on or after the date of
original issuance of the Debentures, there is more than an insubstantial risk
that the Company will not, within 90 days of the date of such opinion, be
entitled to treat an amount equal to the aggregate liquidation amount of the
Capital Securities as "Tier 1 Capital" (or its then equivalent) for purposes of
the capital adequacy guidelines of the Federal Reserve, as then in effect and
applicable to the Company (or if the Company is not a bank holding company, such
guidelines applied to the Company as if the Company were subject to such
guidelines); provided, however, that the inability of the Company to treat all
or any portion of the liquidation amount of the Capital Securities as Tier l
Capital shall not constitute the basis for a Capital Treatment Event, if such
inability results from the Company having cumulative preferred stock, minority
interests in consolidated subsidiaries, or any other class of security or
interest which the Federal Reserve or OTS, as applicable, may now or hereafter
accord Tier 1 Capital treatment in excess of the amount which may now or
hereafter qualify for treatment as Tier 1 Capital under applicable capital
adequacy guidelines; provided further, however, that the distribution of
Debentures in connection with the liquidation of the Trust shall not in and of
itself constitute a Capital Treatment Event unless such liquidation shall have
occurred in connection with a Tax Event or an Investment Company Event.


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<PAGE>

         "Certificate" means a certificate signed by any one of the principal
executive officer, the principal financial officer or the principal accounting
officer of the Company.

         "Common Securities" means undivided beneficial interests in the assets
of the Trust which rank pari passu with Capital Securities issued by the Trust;
provided, however, that upon the occurrence and continuance of an Event of
Default (as defined in the Declaration), the rights of holders of such Common
Securities to payment in respect of distributions and payments upon liquidation,
redemption and otherwise are subordinated to the rights of holders of such
Capital Securities.

         "Company" means Redwood Empire Bancorp, a California corporation, and,
subject to the provisions of Article XI, shall include its successors and
assigns.

         "Comparable Treasury Issue" means with respect to any Special
Redemption Date the United States Treasury security selected by the Quotation
Agent as having a maturity comparable to the Fixed Rate Period Remaining Life
that would be utilized, at the time of selection and in accordance with
customary financial practice, in pricing new issues of corporate debt securities
of comparable maturity to the Fixed Rate Period Remaining Life. If no United
States Treasury security has a maturity which is within a period from three
months before to three months after September 17, 2008, the two most closely
corresponding fixed, non-callable United States Treasury securities, as selected
by the Quotation Agent, shall be used as the Comparable Treasury Issue, and the
Treasury Rate shall be interpolated or extrapolated on a straight-line basis,
rounding to the nearest month using such securities.

         "Comparable Treasury Price" means (a) the average of five Reference
Treasury Dealer Quotations for such Special Redemption Date, after excluding the
highest and lowest such Reference Treasury Dealer Quotations, or (b) if the
Quotation Agent obtains fewer than five such Reference Treasury Dealer
Quotations, the average of all such Quotations.

         "Coupon Rate" has the meaning set forth in Section 2.8.

         "Debenture" or "Debentures" has the meaning stated in the first recital
of this Indenture.

         "Debenture Register" has the meaning specified in Section 2.5.

         "Declaration" means the Amended and Restated Declaration of Trust of
the Trust, as amended or supplemented from time to time.

         "Default" means any event, act or condition that with notice or lapse
of time, or both, would constitute an Event of Default.

         "Defaulted Interest" has the meaning set forth in Section 2.8.

         "Distribution Period" means the period beginning on (and including) the
date of original issuance and ending on (but excluding) December 17, 2003 and
each successive period beginning on (and including) December 17, 2003, and each
succeeding Interest Payment Date, and ending on (but excluding) the next
succeeding Interest Payment Date.

         "Determination Date" has the meaning set forth in Section 2.10.

         "Event of Default" means any event specified in Section 5.1, continued
for the period of time, if any, and after the giving of the notice, if any,
therein designated.

         "Extension Period" has the meaning set forth in Section 2.11.

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1034360.1
Redwood Empire Bancorp/Indenture
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         "Federal Reserve" means the Board of Governors of the Federal Reserve
System and any successor federal agency that is primarily responsible for
regulating the activities of bank holding companies.

         "Fixed Rate Period Remaining Life" means, with respect to any
Debenture, the period from the Special Redemption Date for such Debenture to
September 17, 2008.

         "Indenture" means this instrument as originally executed or, if amended
or supplemented as herein provided, as so amended or supplemented, or both.

         "Institutional Trustee" has the meaning set forth in the Declaration.

         "Interest Payment Date" means each March 17, June 17, September 17 and
December 17 during the term of this Indenture, commencing on December 17, 2003.

         "Interest Rate" means for the period beginning on (and including) the
date of original issuance and ending on (but excluding) September 17, 2008 the
rate per annum of 6.35% and for each Distribution Period thereafter, the Coupon
Rate.

         "Investment Company Event" means the receipt by the Company and the
Trust of an opinion of counsel experienced in such matters to the effect that,
as a result of the occurrence of a change in law or regulation or written change
(including any announced prospective change) in interpretation or application of
law or regulation by any legislative body, court, governmental agency or
regulatory authority, there is more than an insubstantial risk that the Trust is
or, within 90 days of the date of such opinion will be considered an "investment
company" that is required to be registered under the Investment Company Act of
1940, as amended which change or prospective change becomes effective or would
become effective, as the case may be, on or after the date of the issuance of
the Debentures.

         "Liquidation Amount" means the stated amount of $1,000.00 per Trust
Security.

         "Maturity Date" means September 17, 2033.

         "Officers' Certificate" means a certificate signed by the Chairman of
the Board, the Chief Executive Officer, the Vice Chairman, the President, any
Managing Director or any Vice President, and by the Treasurer, an Assistant
Treasurer, the Comptroller, an Assistant Comptroller, the Secretary or an
Assistant Secretary of the Company, and delivered to the Trustee. Each such
certificate shall include the statements provided for in Section 14.6 if and to
the extent required by the provisions of such Section.

         "Opinion of Counsel" means an opinion in writing signed by legal
counsel, who may be an employee of or counsel to the Company, or may be other
counsel reasonably satisfactory to the Trustee. Each such opinion shall include
the statements provided for in Section 14.6 if and to the extent required by the
provisions of such Section.

         "OTS" means the Office of Thrift Supervision and any successor federal
agency that is primarily responsible for regulating the activities of savings
and loan holding companies.

         The term "outstanding," when used with reference to Debentures, means,
subject to the provisions of Section 7.4, as of any particular time, all
Debentures authenticated and delivered by the Trustee or the Authenticating
Agent under this Indenture, except:

         (a) Debentures theretofore canceled by the Trustee or the
Authenticating Agent or delivered to the Trustee for cancellation;

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Redwood Empire Bancorp/Indenture
<PAGE>

         (b) Debentures, or portions thereof, for the payment or redemption of
which moneys in the necessary amount shall have been deposited in trust with the
Trustee or with any paying agent (other than the Company) or shall have been set
aside and segregated in trust by the Company (if the Company shall act as its
own paying agent); provided, however, that, if such Debentures, or portions
thereof, are to be redeemed prior to maturity thereof, notice of such redemption
shall have been given as provided in Section 10.3 or provision satisfactory to
the Trustee shall have been made for giving such notice; and

         (c) Debentures paid pursuant to Section 2.6 or in lieu of or in
substitution for which other Debentures shall have been authenticated and
delivered pursuant to the terms of Section 2.6 unless proof satisfactory to the
Company and the Trustee is presented that any such Debentures are held by bona
fide holders in due course.

         "Person" means any individual, corporation, limited liability company,
partnership, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

         "Predecessor Security" of any particular Debenture means every previous
Debenture evidencing all or a portion of the same debt as that evidenced by such
particular Debenture; and, for purposes of this definition, any Debenture
authenticated and delivered under Section 2.6 in lieu of a lost, destroyed or
stolen Debenture shall be deemed to evidence the same debt as the lost,
destroyed or stolen Debenture.

         "Primary Treasury Dealer" means either a nationally recognized primary
United States Government securities dealer or an entity of recognized standing
in matters pertaining to the quotation of treasury securities that is reasonably
acceptable to the Company and the Trustee.

         "Principal Office of the Trustee," or other similar term, means the
office of the Trustee, at which at any particular time its corporate trust
business shall be principally administered, which at the time of the execution
of this Indenture shall be 225 Asylum Street, Goodwin Square, Hartford,
Connecticut 06103.

         "Quotation Agent" means U.S. Bank National Association, or its
designee, and its successors; provided, however, that if the foregoing shall
cease to be a Primary Treasury Dealer, the Company shall substitute therefor
another Primary Treasury Dealer.

         "Redemption Date" has the meaning set forth in Section 10.1.

         "Redemption Price" means 100% of the principal amount of the Debentures
being redeemed, plus accrued and unpaid interest (including any Additional
Interest) on such Debentures to the Redemption Date.

         "Reference Treasury Dealer" means (i) the Quotation Agent and (ii) any
other Primary Treasury Dealer selected by the Trustee after consultation with
the Company.

         "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any Redemption Date, the average, as determined by
the Quotation Agent, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount) quoted in
writing to the Quotation Agent by such Reference Treasury Dealer at 5:00 p.m.,
New York City time, on the third Business Day preceding such Redemption Date.

         "Responsible Officer" means, with respect to the Trustee, any officer
within the Principal Office of the Trustee, including any vice-president, any
assistant vice-president, any secretary, any assistant secretary, the treasurer,
any assistant treasurer, any trust officer or other officer of the Principal
Trust


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<PAGE>

Office of the Trustee customarily performing functions similar to those
performed by any of the above designated officers and also means, with respect
to a particular corporate trust matter, any other officer to whom such matter is
referred because of that officer's knowledge of and familiarity with the
particular subject.

         "Securities Act" means the Securities Act of 1933, as amended from time
to time or any successor legislation.

         "Securityholder," "holder of Debentures," or other similar terms, means
any Person in whose name at the time a particular Debenture is registered on the
register kept by the Company or the Trustee for that purpose in accordance with
the terms hereof.

         "Senior Indebtedness" means, with respect to the Company, (i) the
principal, premium, if any, and interest in respect of (A) indebtedness of the
Company for money borrowed and (B) indebtedness evidenced by securities,
debentures, notes, bonds or other similar instruments issued by the Company;
(ii) all capital lease obligations of the Company; (iii) all obligations of the
Company issued or assumed as the deferred purchase price of property, all
conditional sale obligations of the Company and all obligations of the Company
under any title retention agreement; (iv) all obligations of the Company for the
reimbursement of any letter of credit, any banker's acceptance, any security
purchase facility, any repurchase agreement or similar arrangement, any interest
rate swap, any other hedging arrangement, any obligation under options or any
similar credit or other transaction; (v) all obligations of the type referred to
in clauses (i) through (iv) above of other Persons for the payment of which the
Company is responsible or liable as obligor, guarantor or otherwise; and (vi)
all obligations of the type referred to in clauses (i) through (v) above of
other Persons secured by any lien on any property or asset of the Company
(whether or not such obligation is assumed by the Company), whether incurred on
or prior to the date of this Indenture or thereafter incurred. Notwithstanding
the foregoing, "Senior Indebtedness" shall not include (1) any Additional Junior
Indebtedness, (2) Debentures issued pursuant to this Indenture and guarantees in
respect of such Debentures, (3) trade accounts payable of the Company arising in
the ordinary course of business (such trade accounts payable being pari passu in
right of payment to the Debentures), or (4) obligations with respect to which
(a) in the instrument creating or evidencing the same or pursuant to which the
same is outstanding, it is provided that such obligations are pari passu, junior
or otherwise not superior in right of payment to the Debentures and (b) the
Company, prior to the issuance thereof, has notified (and, if then required
under the applicable guidelines of the regulating entity, has received approval
from) the Federal Reserve (if the Company is a bank holding company) or the OTS
(if the Company is a savings and loan holding company). Senior Indebtedness
shall continue to be Senior Indebtedness and be entitled to the subordination
provisions irrespective of any amendment, modification or waiver of any term of
such Senior Indebtedness.

         "Special Event" means any of a Capital Treatment Event, an Investment
Company Event or a Tax Event.

         "Special Redemption Date" has the meaning set forth in Section 10.2.

         "Special Redemption Price" means (a) if the Special Redemption Date
occurs before September 17, 2008, the greater of (i) 107.5% of the principal
amount of the Debentures, plus accrued and unpaid interest (including Additional
Interest) on the Debentures to the Special Redemption Date, or (ii) as
determined by the Quotation Agent, (A) the sum of the present values of the
scheduled payments of principal and interest on the Debentures during the Fixed
Rate Period Remaining Life of the Debentures (assuming the Debentures matured on
September 17, 2008) discounted to the Special Redemption Date on a quarterly
basis (assuming a 360-day year consisting of twelve 30-day months) at the
Treasury Rate, plus (B) accrued and unpaid interest (including Additional
Interest) on the Debentures to such Special Redemption Date, or (b) if the
Special Redemption Date occurs on or after September 17, 2008, 100% of


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<PAGE>

the principal amount of the Debentures being redeemed, plus accrued and unpaid
interest (including any Additional Interest) on such Debentures to the Special
Redemption Date.

         "Subsidiary" means with respect to any Person, (i) any corporation at
least a majority of the outstanding voting stock of which is owned, directly or
indirectly, by such Person or by one or more of its Subsidiaries, or by such
Person and one or more of its Subsidiaries, (ii) any general partnership, joint
venture or similar entity, at least a majority of the outstanding partnership or
similar interests of which shall at the time be owned by such Person, or by one
or more of its Subsidiaries, or by such Person and one or more of its
Subsidiaries and (iii) any limited partnership of which such Person or any of
its Subsidiaries is a general partner. For the purposes of this definition,
"voting stock" means shares, interests, participations or other equivalents in
the equity interest (however designated) in such Person having ordinary voting
power for the election of a majority of the directors (or the equivalent) of
such Person, other than shares, interests, participations or other equivalents
having such power only by reason of the occurrence of a contingency.

         "Tax Event" means the receipt by the Company and the Trust of an
opinion of counsel experienced in such matters to the effect that, as a result
of any amendment to or change (including any announced prospective change) in
the laws or any regulations thereunder of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement (including any private letter ruling,
technical advice memorandum, field service advice, regulatory procedure, notice
or announcement, including any notice or announcement of intent to adopt such
procedures or regulations) (an "Administrative Action") or judicial decision
interpreting or applying such laws or regulations, regardless of whether such
Administrative Action or judicial decision is issued to or in connection with a
proceeding involving the Company or the Trust and whether or not subject to
review or appeal, which amendment, clarification, change, Administrative Action
or decision is enacted, promulgated or announced, in each case on or after the
date of original issuance of the Debentures, there is more than an insubstantial
risk that: (i) the Trust is, or will be within 90 days of the date of such
opinion, subject to United States federal income tax with respect to income
received or accrued on the Debentures; (ii) interest payable by the Company on
the Debentures is not, or within 90 days of the date of such opinion, will not
be, deductible by the Company, in whole or in part, for United States federal
income tax purposes; or (iii) the Trust is, or will be within 90 days of the
date of such opinion, subject to more than a de minimis amount of other taxes,
duties or other governmental charges.

         "3-Month LIBOR" has the meaning set forth in Section 2.10.

         "Telerate Page 3750" has the meaning set forth in Section 2.10.

         "Treasury Rate" means (i) the yield, under the heading which represents
the average for the week immediately prior to the date of calculation, appearing
in the most recently published statistical release designated H.15 (519) or any
successor publication which is published weekly by the Federal Reserve and which
establishes yields on actively traded United States Treasury securities adjusted
to constant maturity under the caption "Treasury Constant Maturities," for the
maturity corresponding to the Fixed Rate Period Remaining Life (if no maturity
is within three months before or after the Fixed Rate Period Remaining Life,
yields for the two published maturities most closely corresponding to the Fixed
Rate Period Remaining Life shall be determined and the Treasury Rate shall be
interpolated or extrapolated from such yields on a straight-line basis, rounding
to the nearest month) or (ii) if such release (or any successor release) is not
published during the week preceding the calculation date or does not contain
such yields, the rate per annum equal to the semi-annual equivalent yield to
maturity of the Comparable Treasury Issue, calculated using a price for the
Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such Special Redemption Date. The



                                       7
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<PAGE>

Treasury Rate shall be calculated by the Quotation Agent on the third Business
Day preceding the Special Redemption Date.

         "Trust" shall mean Redwood Statutory Trust II, a Connecticut statutory
trust, or any other similar trust created for the purpose of issuing Capital
Securities in connection with the issuance of Debentures under this Indenture,
of which the Company is the sponsor.

         "Trust Securities" means Common Securities and Capital Securities of
the Trust.

         "Trustee" means U.S. Bank National Association, and, subject to the
provisions of Article VI hereof, shall also include its successors and assigns
as Trustee hereunder.

                                  ARTICLE II.
                                   DEBENTURES

        Section 2.1. Authentication and Dating. Upon the execution and delivery
of this Indenture, or from time to time thereafter, Debentures in an aggregate
principal amount not in excess of $10,310,000.00 may be executed and delivered
by the Company to the Trustee for authentication, and the Trustee shall
thereupon authenticate and make available for delivery said Debentures to or
upon the written order of the Company, signed by its Chairman of the Board of
Directors, Chief Executive Officer, Vice Chairman, the President, one of its
Managing Directors or one of its Vice Presidents without any further action by
the Company hereunder. In authenticating such Debentures, and accepting the
additional responsibilities under this Indenture in relation to such Debentures,
the Trustee shall be entitled to receive, and (subject to Section 6.1) shall be
fully protected in relying upon:

     (a) a copy of any Board  Resolution or Board  Resolutions  relating thereto
and, if applicable,  an appropriate  record of any action taken pursuant to such
resolution, in each case certified by the Secretary or an Assistant Secretary of
the Company, as the case may be; and

     (b) an Opinion of Counsel  prepared in  accordance  with Section 14.6 which
shall also state:

               (1) that such Debentures, when authenticated and delivered by the
          Trustee  and  issued by the  Company  in each case in the  manner  and
          subject to any conditions  specified in such Opinion of Counsel,  will
          constitute  valid and  legally  binding  obligations  of the  Company,
          subject   to  or  limited  by   applicable   bankruptcy,   insolvency,
          reorganization,  conservatorship,  receivership,  moratorium and other
          statutory  or  decisional  laws  relating to or  affecting  creditors'
          rights or the  reorganization  of financial  institutions  (including,
          without limitation,  preference and fraudulent  conveyance or transfer
          laws),  heretofore  or hereafter  enacted or in effect,  affecting the
          rights of creditors generally; and

               (2) that all laws and  requirements  in respect of the  execution
          and delivery by the Company of the Debentures  have been complied with
          and that  authentication and delivery of the Debentures by the Trustee
          will not violate the terms of this Indenture.

         The Trustee shall have the right to decline to authenticate and deliver
any Debentures under this Section if the Trustee, being advised in writing by
counsel, determines that such action may not lawfully be taken or if a
Responsible Officer of the Trustee in good faith shall determine that such
action would expose the Trustee to personal liability to existing holders.



                                       8
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Redwood Empire Bancorp/Indenture
<PAGE>

         The definitive Debentures shall be typed, printed, lithographed or
engraved on steel engraved borders or may be produced in any other manner, all
as determined by the officers executing such Debentures, as evidenced by their
execution of such Debentures.

Section 2.2. Form of Trustee's Certificate of Authentication. The Trustee's
certificate of authentication on all Debentures shall be in substantially the
following form:

         This is one of the Debentures referred to in the within-mentioned
Indenture.

         U.S. Bank National Association, as Trustee

         By
           ---------------------------------------------------
         Authorized Signer

     Section 2.3. Form and  Denomination of Debentures.  The Debentures shall be
substantially in the form of Exhibit A attached hereto.  The Debentures shall be
in registered, certificated form without coupons and in minimum denominations of
$100,000.00  and any  multiple of  $1,000.00 in excess  thereof.  Any  attempted
transfer of the  Debentures in a block having an aggregate  principal  amount of
less  than  $100,000.00  shall  be  deemed  to be void  and of no  legal  effect
whatsoever.  Any such purported transferee shall be deemed not to be a holder of
such  Debentures for any purpose,  including,  but not limited to the receipt of
payments on such  Debentures,  and such purported  transferee shall be deemed to
have no  interest  whatsoever  in  such  Debentures.  The  Debentures  shall  be
numbered,  lettered, or otherwise  distinguished in such manner or in accordance
with  such  plans as the  officers  executing  the same may  determine  with the
approval  of the  Trustee  as  evidenced  by the  execution  and  authentication
thereof.

     Section 2.4. Execution of Debentures. The Debentures shall be signed in the
name and on behalf of the Company by the manual or  facsimile  signature  of its
Chairman of the Board of Directors,  Chief  Executive  Officer,  Vice  Chairman,
President,  one  of  its  Managing  Directors  or  one  of  its  Executive  Vice
Presidents,  Senior Vice Presidents or Vice Presidents.  Only such Debentures as
shall bear thereon a certificate  of  authentication  substantially  in the form
herein before recited,  executed by the Trustee or the  Authenticating  Agent by
the manual signature of an authorized signer,  shall be entitled to the benefits
of this Indenture or be valid or obligatory for any purpose. Such certificate by
the  Trustee or the  Authenticating  Agent upon any  Debenture  executed  by the
Company shall be conclusive  evidence  that the Debenture so  authenticated  has
been duly authenticated and delivered  hereunder and that the holder is entitled
to the benefits of this Indenture.

     In case any  officer  of the  Company  who  shall  have  signed  any of the
Debentures  shall cease to be such officer before the Debentures so signed shall
have been  authenticated  and  delivered  by the  Trustee or the  Authenticating
Agent,  or disposed  of by the  Company,  such  Debentures  nevertheless  may be
authenticated  and delivered or disposed of as though the Person who signed such
Debentures  had not ceased to be such officer of the Company;  and any Debenture
may be signed on behalf of the Company by such Persons as, at the actual date of
the execution of such  Debenture,  shall be the proper  officers of the Company,
although at the date of the execution of this  Indenture any such person was not
such an officer.

     Every Debenture shall be dated the date of its authentication.

     Section  2.5.  Exchange and  Registration  of Transfer of  Debentures.  The
Company  shall  cause to be kept,  at the  office or agency  maintained  for the
purpose of registration of transfer and for exchange as provided in Section 3.2,
a register (the  "Debenture  Register") for the Debentures  issued  hereunder in
which, subject to such reasonable  regulations as it may prescribe,  the Company
shall  provide for the  registration  and transfer of all  Debentures as in this
Article II provided.  The Debenture  Register


                                       9
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Redwood Empire Bancorp/Indenture
<PAGE>

shall be in written  form or in any other form capable of being  converted  into
written form within a reasonable time.

         Debentures to be exchanged may be surrendered at the Principal Office
of the Trustee or at any office or agency to be maintained by the Company for
such purpose as provided in Section 3.2, and the Company shall execute, the
Company or the Trustee shall register and the Trustee or the Authenticating
Agent shall authenticate and make available for delivery in exchange therefor
the Debenture or Debentures which the Securityholder making the exchange shall
be entitled to receive. Upon due presentment for registration of transfer of any
Debenture at the Principal Office of the Trustee or at any office or agency of
the Company maintained for such purpose as provided in Section 3.2, the Company
shall execute, the Company or the Trustee shall register and the Trustee or the
Authenticating Agent shall authenticate and make available for delivery in the
name of the transferee or transferees a new Debenture for a like aggregate
principal amount. Registration or registration of transfer of any Debenture by
the Trustee or by any agent of the Company appointed pursuant to Section 3.2,
and delivery of such Debenture, shall be deemed to complete the registration or
registration of transfer of such Debenture.

         All Debentures presented for registration of transfer or for exchange
or payment shall (if so required by the Company or the Trustee or the
Authenticating Agent) be duly endorsed by, or be accompanied by a written
instrument or instruments of transfer in form satisfactory to the Company and
the Trustee or the Authenticating Agent duly executed by the holder or his
attorney duly authorized in writing.

         No service charge shall be made for any exchange or registration of
transfer of Debentures, but the Company or the Trustee may require payment of a
sum sufficient to cover any tax, fee or other governmental charge that may be
imposed in connection therewith.

         The Company or the Trustee shall not be required to exchange or
register a transfer of any Debenture for a period of 15 days next preceding the
date of selection of Debentures for redemption.

         Notwithstanding anything herein to the contrary, Debentures may not be
transferred except in compliance with the restricted securities legend set forth
below, unless otherwise determined by the Company, upon the advice of counsel
expert in securities law, in accordance with applicable law:

         THIS SECURITY IS NOT A SAVINGS ACCOUNT OR DEPOSIT AND IT IS NOT INSURED
BY THE UNITED STATES OR ANY AGENCY OR FUND OF THE UNITED STATES, INCLUDING THE
FEDERAL DEPOSIT INSURANCE CORPORATION.

         THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED (THE "SECURITIES ACT"), ANY STATE SECURITIES LAWS OR ANY OTHER
APPLICABLE SECURITIES LAW. NEITHER THIS SECURITY NOR ANY INTEREST OR
PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND ANY APPLICABLE STATE SECURITIES LAWS. THE
HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR
OTHERWISE TRANSFER THIS SECURITY ONLY (A) TO THE COMPANY, (B) PURSUANT TO A
REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES
ACT, (C) TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED
INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A SO
LONG AS THIS SECURITY IS ELIGIBLE FOR RESALE PURSUANT TO RULE 144A IN ACCORDANCE
WITH RULE 144A, (D) TO A NON-U.S. PERSON IN AN OFFSHORE TRANSACTION IN
ACCORDANCE WITH


                                       10
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

RULE 903 OR RULE 904 (AS APPLICABLE) OF REGULATION S UNDER THE SECURITIES ACT,
(E) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH
(A) OF RULE 501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THIS SECURITY FOR ITS
OWN ACCOUNT, OR FOR THE ACCOUNT OF SUCH AN INSTITUTIONAL ACCREDITED INVESTOR,
FOR INVESTMENT PURPOSES AND NOT WITH A VIEW TO, OR FOR OFFER OR SALE IN
CONNECTION WITH, ANY DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT, OR (F)
PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF
THE SECURITIES ACT, SUBJECT TO THE COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE
OR TRANSFER TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION
AND/OR OTHER INFORMATION SATISFACTORY TO IT IN ACCORDANCE WITH THE INDENTURE, A
COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY.

         THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF ALSO AGREES,
REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT, INDIVIDUAL
RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF THE
EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE") (EACH
A "PLAN"), OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE "PLAN ASSETS" BY REASON
OF ANY PLAN'S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING "PLAN ASSETS" OF
ANY PLAN MAY ACQUIRE OR HOLD THE SECURITIES OR ANY INTEREST THEREIN, UNLESS SUCH
PURCHASER OR HOLDER IS ELIGIBLE FOR EXEMPTIVE RELIEF AVAILABLE UNDER U.S.
DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION 96-23, 95-60, 91-38,
90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE AND HOLDING OF
THIS SECURITY IS NOT PROHIBITED BY SECTION 406 OF ERISA OR SECTION 4975 OF THE
CODE WITH RESPECT TO SUCH PURCHASE OR HOLDING. ANY PURCHASER OR HOLDER OF THE
SECURITIES OR ANY INTEREST THEREIN WILL BE DEEMED TO HAVE REPRESENTED BY ITS
PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN EMPLOYEE BENEFIT PLAN
WITHIN THE MEANING OF SECTION 3(3) OF ERISA, OR A PLAN TO WHICH SECTION 4975 OF
THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING ON BEHALF OF AN
EMPLOYEE BENEFIT PLAN OR PLAN, OR ANY OTHER PERSON OR ENTITY USING THE ASSETS OF
ANY EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE, OR (ii) SUCH
PURCHASE WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION 406 OF ERISA
OR SECTION 4975 OF THE CODE FOR WHICH THERE IS NO APPLICABLE STATUTORY OR
ADMINISTRATIVE EXEMPTION.

         THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN BLOCKS
HAVING AN AGGREGATE PRINCIPAL AMOUNT OF NOT LESS THAN $100,000.00 AND MULTIPLES
OF $1,000.00 IN EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A
BLOCK HAVING AN AGGREGATE PRINCIPAL AMOUNT OF LESS THAN $100,000.00 SHALL BE
DEEMED TO BE VOID AND OF NO LEGAL EFFECT WHATSOEVER.

         THE HOLDER OF THIS SECURITY AGREES THAT IT WILL COMPLY WITH THE
FOREGOING RESTRICTIONS.

     Section 2.6. Mutilated,  Destroyed,  Lost or Stolen Debentures. In case any
Debenture shall become  mutilated or be destroyed,  lost or stolen,  the Company
shall execute,  and upon its written request the Trustee shall  authenticate and
deliver, a new Debenture bearing a number not contemporaneously  outstanding, in
exchange and  substitution  for the  mutilated  Debenture,  or in lieu of and in
substitution for the Debenture so destroyed,  lost or stolen.  In every case the
applicant  for a  substituted  Debenture  shall


                                       11
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

furnish to the Company  and the Trustee  such  security or  indemnity  as may be
required  by  them  to  save  each  of them  harmless,  and,  in  every  case of
destruction,  loss or theft, the applicant shall also furnish to the Company and
the Trustee evidence to their satisfaction of the destruction,  loss or theft of
such Debenture and of the ownership thereof.

         The Trustee may authenticate any such substituted Debenture and deliver
the same upon the written request or authorization of any officer of the
Company. Upon the issuance of any substituted Debenture, the Company may require
the payment of a sum sufficient to cover any tax or other governmental charge
that may be imposed in relation thereto and any other expenses connected
therewith. In case any Debenture which has matured or is about to mature or has
been called for redemption in full shall become mutilated or be destroyed, lost
or stolen, the Company may, instead of issuing a substitute Debenture, pay or
authorize the payment of the same (without surrender thereof except in the case
of a mutilated Debenture) if the applicant for such payment shall furnish to the
Company and the Trustee such security or indemnity as may be required by them to
save each of them harmless and, in case of destruction, loss or theft, evidence
satisfactory to the Company and to the Trustee of the destruction, loss or theft
of such Debenture and of the ownership thereof.

         Every substituted Debenture issued pursuant to the provisions of this
Section 2.6 by virtue of the fact that any such Debenture is destroyed, lost or
stolen shall constitute an additional contractual obligation of the Company,
whether or not the destroyed, lost or stolen Debenture shall be found at any
time, and shall be entitled to all the benefits of this Indenture equally and
proportionately with any and all other Debentures duly issued hereunder. All
Debentures shall be held and owned upon the express condition that, to the
extent permitted by applicable law, the foregoing provisions are exclusive with
respect to the replacement or payment of mutilated, destroyed, lost or stolen
Debentures and shall preclude any and all other rights or remedies
notwithstanding any law or statute existing or hereafter enacted to the contrary
with respect to the replacement or payment of negotiable instruments or other
securities without their surrender.

        Section 2.7. Temporary Debentures. Pending the preparation of definitive
Debentures, the Company may execute and the Trustee shall authenticate and make
available for delivery temporary Debentures that are typed, printed or
lithographed. Temporary Debentures shall be issuable in any authorized
denomination, and substantially in the form of the definitive Debentures in lieu
of which they are issued but with such omissions, insertions and variations as
may be appropriate for temporary Debentures, all as may be determined by the
Company. Every such temporary Debenture shall be executed by the Company and be
authenticated by the Trustee upon the same conditions and in substantially the
same manner, and with the same effect, as the definitive Debentures. Without
unreasonable delay the Company will execute and deliver to the Trustee or the
Authenticating Agent definitive Debentures and thereupon any or all temporary
Debentures may be surrendered in exchange therefor, at the principal corporate
trust office of the Trustee or at any office or agency maintained by the Company
for such purpose as provided in Section 3.2, and the Trustee or the
Authenticating Agent shall authenticate and make available for delivery in
exchange for such temporary Debentures a like aggregate principal amount of such
definitive Debentures. Such exchange shall be made by the Company at its own
expense and without any charge therefor except that in case of any such exchange
involving a registration of transfer the Company may require payment of a sum
sufficient to cover any tax, fee or other governmental charge that may be
imposed in relation thereto. Until so exchanged, the temporary Debentures shall
in all respects be entitled to the same benefits under this Indenture as
definitive Debentures authenticated and delivered hereunder.

        Section 2.8. Payment of Interest and Additional Interest. Interest at
the Interest Rate and any Additional Interest on any Debenture that is payable,
and is punctually paid or duly provided for, on any Interest Payment Date for
Debentures shall be paid to the Person in whose name said Debenture (or


                                       12
1034360.1
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<PAGE>

one or more Predecessor Securities) is registered at the close of business on
the regular record date for such interest installment except that interest and
any Additional Interest payable on the Maturity Date shall be paid to the Person
to whom principal is paid.

         Each Debenture shall bear interest for the period beginning on (and
including) the date of original issuance and ending on (but excluding) September
17, 2008 at a rate per annum of 6.35%, and shall bear interest for each
successive Distribution Period beginning on (and including) September 17, 2008,
and each succeeding Interest Payment Date, and ending on (but excluding) the
next succeeding Interest Payment Date at a rate per annum equal to the 3-Month
LIBOR, determined as described in Section 2.10, plus 3.10% (the "Coupon Rate"),
applied to the principal amount thereof, until the principal thereof becomes due
and payable, and on any overdue principal and to the extent that payment of such
interest is enforceable under applicable law (without duplication) on any
overdue installment of interest (including Additional Interest) at the Interest
Rate in effect for each applicable period compounded quarterly. Interest shall
be payable (subject to any relevant Extension Period) quarterly in arrears on
each Interest Payment Date with the first installment of interest to be paid on
December 17, 2003.

         Any interest on any Debenture, including Additional Interest, that is
payable, but is not punctually paid or duly provided for, on any Interest
Payment Date (herein called "Defaulted Interest") shall forthwith cease to be
payable to the registered holder on the relevant regular record date by virtue
of having been such holder; and such Defaulted Interest shall be paid by the
Company to the Persons in whose names such Debentures (or their respective
Predecessor Securities) are registered at the close of business on a special
record date for the payment of such Defaulted Interest, which shall be fixed in
the following manner: the Company shall notify the Trustee in writing at least
25 days prior to the date of the proposed payment of the amount of Defaulted
Interest proposed to be paid on each such Debenture and the date of the proposed
payment, and at the same time the Company shall deposit with the Trustee an
amount of money equal to the aggregate amount proposed to be paid in respect of
such Defaulted Interest or shall make arrangements satisfactory to the Trustee
for such deposit prior to the date of the proposed payment, such money when
deposited to be held in trust for the benefit of the Persons entitled to such
Defaulted Interest as in this clause provided. Thereupon the Trustee shall fix a
special record date for the payment of such Defaulted Interest which shall not
be more than 15 nor less than 10 days prior to the date of the proposed payment
and not less than 10 days after the receipt by the Trustee of the notice of the
proposed payment. The Trustee shall promptly notify the Company of such special
record date and, in the name and at the expense of the Company, shall cause
notice of the proposed payment of such Defaulted Interest and the special record
date therefor to be mailed, first class postage prepaid, to each Securityholder
at its address as it appears in the Debenture Register, not less than 10 days
prior to such special record date. Notice of the proposed payment of such
Defaulted Interest and the special record date therefor having been mailed as
aforesaid, such Defaulted Interest shall be paid to the Persons in whose names
such Debentures (or their respective Predecessor Securities) are registered on
such special record date and shall be no longer payable.

         The Company may make payment of any Defaulted Interest on any
Debentures in any other lawful manner after notice given by the Company to the
Trustee of the proposed payment method; provided, however, the Trustee in its
sole discretion deems such payment method to be practical.

         Any interest (including Additional Interest) scheduled to become
payable on an Interest Payment Date occurring during an Extension Period shall
not be Defaulted Interest and shall be payable on such other date as may be
specified in the terms of such Debentures.

         The term "regular record date" as used in this Section shall mean the
close of business on the 15th calendar day next preceding the applicable
Interest Payment Date.

                                       13
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

         Subject to the foregoing provisions of this Section, each Debenture
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Debenture shall carry the rights to interest accrued
and unpaid, and to accrue, that were carried by such other Debenture.

        Section 2.9. Cancellation of Debentures Paid, etc. All Debentures
surrendered for the purpose of payment, redemption, exchange or registration of
transfer, shall, if surrendered to the Company or any paying agent, be
surrendered to the Trustee and promptly canceled by it, or, if surrendered to
the Trustee or any Authenticating Agent, shall be promptly canceled by it, and
no Debentures shall be issued in lieu thereof except as expressly permitted by
any of the provisions of this Indenture. All Debentures canceled by any
Authenticating Agent shall be delivered to the Trustee. The Trustee shall
destroy all canceled Debentures unless the Company otherwise directs the Trustee
in writing. If the Company shall acquire any of the Debentures, however, such
acquisition shall not operate as a redemption or satisfaction of the
indebtedness represented by such Debentures unless and until the same are
surrendered to the Trustee for cancellation.

        Section 2.10. Computation of Interest. The amount of interest payable
(i) for any Distribution Period commencing on or after the date of original
issuance but before September 17, 2008 will be computed on the basis of a
360-day year of twelve 30-day months, and (ii) for the Distribution Period
commencing on September 17, 2008 and each succeeding Distribution Period will be
calculated by applying the Interest Rate to the principal amount outstanding at
the commencement of the Distribution Period and multiplying each such amount by
the actual number of days in the Distribution Period concerned divided by 360.
In the event that any date on which interest is payable on the Debentures is not
a Business Day, then payment of interest payable on such date shall be made on
the next succeeding day which is a Business Day (and without any interest or
other payment in respect of any such delay), except that, if such Business Day
is in the next succeeding calendar year, such payment shall be made on the
immediately preceding Business Day, in each case with the same force and effect
as if made on the date such payment was originally payable. All percentages
resulting from any calculations on the Debentures will be rounded, if necessary,
to the nearest one hundred-thousandth of a percentage point, with five
one-millionths of a percentage point rounded upward (e.g., 9.876545% (or
..09876545) being rounded to 9.87655% (or .0987655), and all dollar amounts used
in or resulting from such calculation will be rounded to the nearest cent (with
one-half cent being rounded upward)).

     (a) "3-Month LIBOR" means the London  interbank  offered  interest rate for
three-month,  U.S.  dollar  deposits  determined by the Trustee in the following
order of priority:

          (1) the rate  (expressed  as a percentage  per annum) for U.S.  dollar
     deposits  having a three-month  maturity that appears on Telerate Page 3750
     as of 11:00  a.m.  (London  time)  on the  related  Determination  Date (as
     defined below).  "Telerate Page 3750" means the display designated as "Page
     3750" on the Dow Jones  Telerate  Service or such other page as may replace
     Page 3750 on that  service or such  other  service  or  services  as may be
     nominated by the British Bankers' Association as the information vendor for
     the purpose of displaying  London  interbank  offered rates for U.S. dollar
     deposits;

          (2) if such rate cannot be  identified  on the  related  Determination
     Date, the Trustee will request the principal London offices of four leading
     banks in the  London  interbank  market  to  provide  such  banks'  offered
     quotations  (expressed  as  percentages  per  annum) to prime  banks in the
     London  interbank  market for U.S.  dollar  deposits  having a  three-month
     maturity as of 11:00 a.m. (London time) on such  Determination  Date. If at
     least two  quotations  are provided,  3-Month LIBOR will be the  arithmetic
     mean of such quotations;

          (3) if fewer than two such  quotations  are  provided as  requested in
     clause (2) above,  the Trustee  will request four major New York City banks
     to provide such banks' offered


                                       14
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<PAGE>

     quotations  (expressed as percentages per annum) to leading  European banks
     for  loans  in  U.S.  dollars  as of  11:00  a.m.  (London  time)  on  such
     Determination  Date. If at least two such quotations are provided,  3-Month
     LIBOR will be the arithmetic mean of such quotations; and

          (4) if fewer than two such  quotations  are  provided as  requested in
     clause (3) above,  3-Month  LIBOR will be a 3-Month LIBOR  determined  with
     respect to the  Distribution  Period  immediately  preceding  such  current
     Distribution Period.

     If the rate for U.S.  dollar  deposits  having a three-month  maturity that
initially  appears on Telerate  Page 3750 as of 11:00 a.m.  (London time) on the
related  Determination  Date  is  superseded  on the  Telerate  Page  3750  by a
corrected rate by 12:00 noon (London time) on such Determination  Date, then the
corrected rate as so  substituted on the applicable  page will be the applicable
3-Month LIBOR for such Determination Date.

     (b) The Interest Rate for any Distribution Period will at no time be higher
than the maximum rate then permitted by New York law as the same may be modified
by United States law.

     (c)  "Determination  Date" means the date that is two London  Banking  Days
(i.e.,  a  business  day in which  dealings  in  deposits  in U.S.  dollars  are
transacted in the London interbank market) preceding the particular Distribution
Period for which a Coupon Rate is being determined.

     (d) The Trustee shall notify the Company, the Institutional Trustee and any
securities  exchange  or  interdealer  quotation  system  on which  the  Capital
Securities are listed,  of the Coupon Rate and the  Determination  Date for each
Distribution Period, in each case as soon as practicable after the determination
thereof  but in no event  later than the  thirtieth  (30th) day of the  relevant
Distribution Period. Failure to notify the Company, the Institutional Trustee or
any securities  exchange or interdealer  quotation system, or any defect in said
notice,  shall not affect the  obligation  of the Company to make payment on the
Debentures at the applicable  Coupon Rate.  Any error in the  calculation of the
Coupon Rate by the Trustee may be corrected  at any time by notice  delivered as
above provided.  Upon the request of a holder of a Debenture,  the Trustee shall
provide the Coupon Rate then in effect and, if  determined,  the Coupon Rate for
the next Distribution Period.

     (e) Subject to the  corrective  rights set forth above,  all  certificates,
communications, opinions, determinations, calculations, quotations and decisions
given,  expressed,  made or obtained for the purposes of the provisions relating
to the payment and  calculation of interest on the Debentures and  distributions
on the Capital  Securities by the Trustee or the Institutional  Trustee will (in
the  absence  of  willful  default,  bad  faith  and  manifest  error) be final,
conclusive  and binding on the Trust,  the Company and all of the holders of the
Debentures and the Capital Securities, and no liability shall (in the absence of
willful  default,  bad faith or  manifest  error)  attach to the  Trustee or the
Institutional  Trustee in connection with the exercise or non-exercise by either
of them or their respective powers, duties and discretion.

     Section 2.11.  Extension of Interest Payment Period. So long as no Event of
Default has occurred and is continuing,  the Company shall have the right,  from
time to time,  and  without  causing an Event of Default,  to defer  payments of
interest on the  Debentures  by  extending  the interest  payment  period on the
Debentures at any time and from time to time during the term of the  Debentures,
for up to 20 consecutive  quarterly periods (each such extended interest payment
period,  an  "Extension  Period"),  during  which  Extension  Period no interest
(including  Additional Interest) shall be due and payable (except any Additional
Sums that may be due and payable).  No Extension  Period may end on a date other
than an  Interest  Payment  Date.  During an  Extension  Period,  interest  will
continue to accrue on the Debentures, and interest on such accrued interest will
accrue at an annual rate equal to the Interest Rate in effect for such Extension
Period, compounded quarterly from the date such interest would have been payable
were it not for the  Extension  Period,  to the  extent  permitted  by law (such
interest  referred to


                                       15
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

herein as "Additional  Interest").  At the end of any such Extension  Period the
Company  shall pay all  interest  then  accrued  and  unpaid  on the  Debentures
(together  with  Additional  Interest  thereon);   provided,  however,  that  no
Extension Period may extend beyond the Maturity Date; provided further, however,
that  during any such  Extension  Period,  the  Company  shall not and shall not
permit any Affiliate to (i) declare or pay any dividends or distributions on, or
redeem, purchase, acquire, or make a liquidation payment with respect to, any of
the  Company's  or such  Affiliate's  capital  stock  (other  than  payments  of
dividends or distributions  to the Company) or make any guarantee  payments with
respect to the foregoing or (ii) make any payment of principal of or interest or
premium,  if any, on or repay,  repurchase or redeem any debt  securities of the
Company or any Affiliate  that rank pari passu in all respects with or junior in
interest to the  Debentures  (other  than,  with  respect to clauses (i) or (ii)
above, (a) repurchases,  redemptions or other  acquisitions of shares of capital
stock of the Company in connection with any employment contract, benefit plan or
other  similar  arrangement  with or for the  benefit of one or more  employees,
officers,  directors or consultants,  in connection with a dividend reinvestment
or stockholder stock purchase plan or in connection with the issuance of capital
stock of the Company (or securities  convertible  into or  exercisable  for such
capital stock) as consideration in an acquisition transaction entered into prior
to  the  applicable  Extension  Period,  (b) as a  result  of  any  exchange  or
conversion of any class or series of the Company's capital stock (or any capital
stock of a subsidiary  of the Company) for any class or series of the  Company's
capital  stock or of any class or series of the Company's  indebtedness  for any
class or series of the Company's  capital stock,  (c) the purchase of fractional
interests in shares of the Company's capital stock pursuant to the conversion or
exchange  provisions  of such capital stock or the security  being  converted or
exchanged,   (d)  any   declaration  of  a  dividend  in  connection   with  any
stockholders'  rights plan, or the issuance of rights,  stock or other  property
under any  stockholders'  rights plan, or the redemption or repurchase of rights
pursuant thereto,  (e) any dividend in the form of stock,  warrants,  options or
other rights where the dividend  stock or the stock  issuable  upon  exercise of
such  warrants,  options or other  rights is the same stock as that on which the
dividend  is being paid or ranks pari passu with or junior to such stock and any
cash payments in lieu of fractional  shares issued in connection  therewith,  or
(f) payments under the Capital Securities  Guarantee).  Prior to the termination
of any Extension  Period,  the Company may further extend such period,  provided
that  such  period  together  with all such  previous  and  further  consecutive
extensions thereof shall not exceed 20 consecutive  quarterly periods, or extend
beyond the Maturity Date. Upon the termination of any Extension  Period and upon
the payment of all accrued and unpaid  interest  and  Additional  Interest,  the
Company  may  commence  a  new  Extension  Period,   subject  to  the  foregoing
requirements. No interest or Additional Interest shall be due and payable during
an Extension Period, except at the end thereof, but each installment of interest
that would  otherwise  have been due and payable  during such  Extension  Period
shall bear  Additional  Interest to the extent  permitted by applicable law. The
Company  must  give the  Trustee  notice of its  election  to begin or extend an
Extension  Period at least 5 Business Days prior to the regular  record date (as
such term is used in Section 2.8)  immediately  preceding  the Interest  Payment
Date with respect to which  interest on the  Debentures  would have been payable
except for the election to begin or extend such  Extension  Period.  The Trustee
shall give notice of the Company's  election to begin a new Extension  Period to
the Securityholders.

     Section 2.12. CUSIP Numbers.  The Company in issuing the Debentures may use
"CUSIP"  numbers (if then  generally in use),  and, if so, the Trustee shall use
CUSIP  numbers in notices of redemption  as a  convenience  to  Securityholders;
provided, however, that any such notice may state that no representation is made
as to the  correctness of such numbers either as printed on the Debentures or as
contained in any notice of a redemption  and that reliance may be placed only on
the  other  identification  numbers  printed  on the  Debentures,  and any  such
redemption  shall not be affected by any defect in or omission of such  numbers.
The  Company  will  promptly  notify the Trustee in writing of any change in the
CUSIP numbers.




                                       16
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

                                  ARTICLE III.
                       PARTICULAR COVENANTS OF THE COMPANY

Section 3.1.      Payment of Principal, Premium and Interest; Agreed Treatment
of the Debentures.

     (a) The Company  covenants and agrees that it will duly and  punctually pay
or cause to be paid the  principal of and premium,  if any, and interest and any
Additional  Interest and other payments on the  Debentures at the place,  at the
respective  times  and  in  the  manner  provided  in  this  Indenture  and  the
Debentures.  Each  installment  of interest on the Debentures may be paid (i) by
mailing  checks  for  such  interest  payable  to the  order of the  holders  of
Debentures  entitled thereto as they appear on the registry books of the Company
if a request for a wire transfer has not been received by the Company or (ii) by
wire  transfer to any account with a banking  institution  located in the United
States  designated  in writing by such Person to the paying  agent no later than
the related record date. Notwithstanding the foregoing, so long as the holder of
this Debenture is the Institutional Trustee, the payment of the principal of and
interest on this Debenture will be made in immediately  available  funds at such
place and to such account as may be designated by the Institutional Trustee.

     (b) The Company will treat the Debentures as indebtedness,  and the amounts
payable in respect of the principal  amount of such Debentures as interest,  for
all United States federal  income tax purposes.  All payments in respect of such
Debentures  will be made free and clear of United States  withholding tax to any
beneficial  owner thereof that has provided an Internal  Revenue Service Form W8
BEN (or any substitute or successor  form)  establishing  its non-United  States
status for United States federal income tax purposes.

     (c) As of the date of this Indenture,  the Company has no present intention
to exercise its right under  Section  2.11 to defer  payments of interest on the
Debentures by commencing an Extension Period.

     (d) As of the  date  of this  Indenture,  the  Company  believes  that  the
likelihood that it would exercise its right under Section 2.11 to defer payments
of interest on the  Debentures  by  commencing  an Extension  Period at any time
during  which  the  Debentures   are   outstanding  is  remote  because  of  the
restrictions  that would be imposed on the  Company's  ability to declare or pay
dividends  or  distributions  on, or to redeem,  purchase or make a  liquidation
payment  with  respect to, any of its  outstanding  equity and on the  Company's
ability to make any payments of principal  of or interest on, or  repurchase  or
redeem, any of its debt securities that rank pari passu in all respects with (or
junior in interest to) the Debentures.

     Section 3.2.  Offices for Notices and Payments,  etc. So long as any of the
Debentures   remain   outstanding,   the  Company  will  maintain  in  Hartford,
Connecticut,  an office or agency  where the  Debentures  may be  presented  for
payment,  an  office  or  agency  where  the  Debentures  may be  presented  for
registration  of transfer and for exchange as in this Indenture  provided and an
office or agency where  notices and demands to or upon the Company in respect of
the Debentures or of this Indenture may be served.  The Company will give to the
Trustee  written  notice of the location of any such office or agency and of any
change of location thereof.  Until otherwise designated from time to time by the
Company in a notice to the Trustee, or specified as contemplated by Section 2.5,
such  office or  agency  for all of the above  purposes  shall be the  office or
agency of the  Trustee.  In case the  Company  shall fail to  maintain  any such
office or agency in Hartford,  Connecticut, or shall fail to give such notice of
the location or of any change in the location thereof, presentations and demands
may be made and notices may be served at the Principal Office of the Trustee.

     In addition to any such office or agency, the Company may from time to time
designate one or more offices or agencies outside Hartford,  Connecticut,  where
the Debentures may be presented for


                                       17
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>
registration  of  transfer  and for  exchange  in the  manner  provided  in this
Indenture,  and the Company may from time to time rescind such  designation,  as
the Company may deem  desirable or expedient;  provided,  however,  that no such
designation  or  rescission  shall in any  manner  relieve  the  Company  of its
obligation to maintain any such office or agency in Hartford,  Connecticut,  for
the  purposes  above  mentioned.  The Company  will give to the  Trustee  prompt
written notice of any such designation or rescission thereof.

     Section  3.3.  Appointments  to Fill  Vacancies in  Trustee's  Office.  The
Company, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint,  in the manner  provided in Section 6.9, a Trustee,  so that there
shall at all times be a Trustee hereunder.

     Section 3.4. Provision as to Paying Agent.

     (a) If the Company shall appoint a paying agent other than the Trustee,  it
will cause such paying agent to execute and deliver to the Trustee an instrument
in which such agent shall agree with the  Trustee,  subject to the  provision of
this Section 3.4,

          (1)  that it will  hold  all  sums  held by it as such  agent  for the
          payment of the principal of and premium, if any, or interest,  if any,
          on the  Debentures  (whether  such  sums  have  been paid to it by the
          Company or by any other  obligor on the  Debentures)  in trust for the
          benefit of the holders of the Debentures;

          (2) that it will give the Trustee prompt written notice of any failure
          by the Company (or by any other obligor on the Debentures) to make any
          payment of the principal of and premium, if any, or interest,  if any,
          on the Debentures when the same shall be due and payable; and

          (3) that it will, at any time during the  continuance  of any Event of
          Default, upon the written request of the Trustee, forthwith pay to the
          Trustee all sums so held in trust by such paying agent.

     (b) If the Company shall act as its own paying agent, it will, on or before
each due date of the  principal  of and  premium,  if any,  or interest or other
payments, if any, on the Debentures,  set aside, segregate and hold in trust for
the  benefit  of the  holders of the  Debentures  a sum  sufficient  to pay such
principal,  premium,  interest or other payments so becoming due and will notify
the  Trustee in writing of any failure to take such action and of any failure by
the Company (or by any other obligor under the  Debentures)  to make any payment
of the principal of and premium, if any, or interest or other payments,  if any,
on the Debentures when the same shall become due and payable.

     Whenever  the  Company  shall  have  one or  more  paying  agents  for  the
Debentures,  it will,  on or prior  to each  due  date of the  principal  of and
premium, if any, or interest,  if any, on the Debentures,  deposit with a paying
agent a sum sufficient to pay the principal, premium, interest or other payments
so  becoming  due,  such sum to be held in trust for the  benefit of the Persons
entitled thereto and (unless such paying agent is the Trustee) the Company shall
promptly notify the Trustee in writing of its action or failure to act.

     (c)  Anything in this  Section  3.4 to the  contrary  notwithstanding,  the
Company  may, at any time,  for the  purpose of  obtaining  a  satisfaction  and
discharge  with  respect to the  Debentures,  or for any other  reason,  pay, or
direct  any  paying  agent to pay to the  Trustee  all sums held in trust by the
Company or any such paying  agent,  such sums to be held by the Trustee upon the
trusts herein contained.

     (d)  Anything in this  Section  3.4 to the  contrary  notwithstanding,  the
agreement  to hold sums in trust as provided  in this  Section 3.4 is subject to
Sections 12.3 and 12.4.



                                       18
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

     Section  3.5.  Certificate  to  Trustee.  The Company  will  deliver to the
Trustee  on or before  120 days after the end of each  fiscal  year,  so long as
Debentures are outstanding  hereunder,  a Certificate stating that in the course
of the  performance  by the  signers of their  duties as officers of the Company
they would normally have knowledge of any default during such fiscal year by the
Company in the performance of any covenants contained herein, stating whether or
not they have  knowledge of any such default  and, if so,  specifying  each such
default of which the signers have knowledge and the nature and status thereof.

     Section 3.6. Additional Sums. If and for so long as the Trust is the holder
of all  Debentures  and  the  Trust  is  required  to pay any  additional  taxes
(including withholding taxes), duties, assessments or other governmental charges
as a result  of a Tax  Event,  the  Company  will pay  such  additional  amounts
("Additional  Sums")  on the  Debentures  as shall be  required  so that the net
amounts  received  and  retained  by the Trust  after  paying  taxes  (including
withholding taxes),  duties,  assessments or other governmental  charges will be
equal to the  amounts the Trust  would have  received if no such taxes,  duties,
assessments  or other  governmental  charges had been imposed.  Whenever in this
Indenture or the  Debentures  there is a reference in any context to the payment
of principal of or interest on the  Debentures,  such mention shall be deemed to
include  mention  of  payments  of the  Additional  Sums  provided  for in  this
paragraph to the extent that,  in such  context,  Additional  Sums are,  were or
would be payable in respect thereof pursuant to the provisions of this paragraph
and express  mention of the payment of Additional  Sums (if  applicable)  in any
provisions  hereof shall not be construed as excluding  Additional Sums in those
provisions  hereof where such express  mention is not made;  provided,  however,
that the deferral of the payment of interest during an Extension Period pursuant
to Section 2.11 shall not defer the payment of any  Additional  Sums that may be
due and payable.

     Section 3.7.  Compliance with  Consolidation  Provisions.  The Company will
not, while any of the Debentures remain outstanding,  consolidate with, or merge
into, or merge into itself,  or sell or convey all or  substantially  all of its
property  to any other  Person  unless the  provisions  of Article XI hereof are
complied with.

     Section 3.8. Limitation on Dividends. If Debentures are initially issued to
the Trust or a trustee of such Trust in  connection  with the  issuance of Trust
Securities by the Trust (regardless of whether Debentures continue to be held by
such  Trust) and (i) there shall have  occurred  and be  continuing  an Event of
Default, (ii) the Company shall be in default with respect to its payment of any
obligations under the Capital Securities  Guarantee,  or (iii) the Company shall
have  given  notice  of its  election  to  defer  payments  of  interest  on the
Debentures by extending the interest  payment period as provided herein and such
period, or any extension  thereof,  shall be continuing,  then the Company shall
not, and shall not allow any Affiliate of the Company to, (x) declare or pay any
dividends  or  distributions  on,  or  redeem,  purchase,  acquire,  or  make  a
liquidation  payment with respect to, any of the Company's  capital stock or its
Affiliates'  capital stock (other than payments of dividends or distributions to
the Company) or make any guarantee payments with respect to the foregoing or (y)
make any payment of  principal  of or interest or premium,  if any, on or repay,
repurchase or redeem any debt  securities  of the Company or any Affiliate  that
rank pari passu in all  respects  with or junior in interest  to the  Debentures
(other  than,  with  respect to  clauses  (x) and (y)  above,  (1)  repurchases,
redemptions or other  acquisitions  of shares of capital stock of the Company in
connection  with  any  employment  contract,   benefit  plan  or  other  similar
arrangement  with  or  for  the  benefit  of one or  more  employees,  officers,
directors  or  consultants,  in  connection  with  a  dividend  reinvestment  or
stockholder  stock  purchase plan or in connection  with the issuance of capital
stock of the Company (or securities  convertible  into or  exercisable  for such
capital stock) as consideration in an acquisition transaction entered into prior
to the applicable  Extension  Period, if any, (2) as a result of any exchange or
conversion of any class or series of the Company's capital stock (or any capital
stock of a subsidiary  of the Company) for any class or series of the  Company's
capital  stock or of any class or series of the Company's  indebtedness  for any
class or series of the Company's  capital stock,  (3) the





                                       19
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

purchase  of  fractional  interests  in shares of the  Company's  capital  stock
pursuant to the  conversion or exchange  provisions of such capital stock or the
security  being  converted or exchanged,  (4) any  declaration  of a dividend in
connection with any stockholders'  rights plan, or the issuance of rights, stock
or other  property  under any  stockholders'  rights plan, or the  redemption or
repurchase of rights  pursuant  thereto,  (5) any dividend in the form of stock,
warrants, options or other rights where the dividend stock or the stock issuable
upon  exercise of such  warrants,  options or other  rights is the same stock as
that on which the  dividend  is being paid or ranks pari passu with or junior to
such  stock  and any  cash  payments  in lieu of  fractional  shares  issued  in
connection therewith, or (6) payments under the Capital Securities Guarantee).

     Section 3.9. Covenants as to the Trust. For so long as the Trust Securities
remain  outstanding,  the Company shall  maintain  100%  ownership of the Common
Securities; provided, however, that any permitted successor of the Company under
this Indenture may succeed to the Company's ownership of such Common Securities.
The Company, as owner of the Common Securities, shall, except in connection with
a distribution  of Debentures to the holders of Trust  Securities in liquidation
of the Trust,  the redemption of all of the Trust Securities or certain mergers,
consolidations or amalgamations, each as permitted by the Declaration, cause the
Trust  (a) to  remain  a  statutory  trust,  (b)  to  otherwise  continue  to be
classified as a grantor trust for United States federal income tax purposes, and
(c) to cause  each  holder  of Trust  Securities  to be  treated  as  owning  an
undivided beneficial interest in the Debentures.

     Section 3.10. Additional Junior Indebtedness. The Company shall not, and it
shall not cause or permit any  Subsidiary of the Company to, incur,  issue or be
obligated on any Additional Junior Indebtedness,  either directly or indirectly,
by way of  guarantee,  suretyship  or otherwise,  other than  Additional  Junior
Indebtedness (i) that, by its terms, is expressly stated to be either junior and
subordinate or pari passu in all respects to the  Debentures,  and (ii) of which
the Company has notified (and, if then required under the applicable  guidelines
of the regulating  entity,  has received approval from) the Federal Reserve,  if
the Company is a bank holding  company,  or the OTS, if the Company is a savings
and loan holding company.

                                  ARTICLE IV.
                       SECURITYHOLDERS' LISTS AND REPORTS
                         BY THE COMPANY AND THE TRUSTEE

     Section 4.1.  Securityholders' Lists. The Company covenants and agrees that
it will furnish or caused to be furnished to the Trustee:

     (a) on each regular record date for the Debentures, a list, in such form as
the  Trustee  may  reasonably  require,  of  the  names  and  addresses  of  the
Securityholders of the Debentures as of such record date; and

     (b) at such other times as the  Trustee  may request in writing,  within 30
days after the  receipt by the  Company of any such  request,  a list of similar
form and  content as of a date not more than 15 days prior to the time such list
is furnished;

except that no such lists need be furnished under this Section 4.1 so long as
the Trustee is in possession thereof by reason of its acting as Debenture
registrar.

     Section 4.2. Preservation and Disclosure of Lists.

     (a) The  Trustee  shall  preserve,  in as  current a form as is  reasonably
practicable,  all  information  as to the names and  addresses of the holders of
Debentures  (1) contained in the most recent list furnished to it as provided in
Section 4.1 or (2) received by it in the capacity of Debentures registrar





                                       20
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>



(if so acting)  hereunder.  The Trustee may destroy any list  furnished to it as
provided in Section 4.1 upon receipt of a new list so furnished.

     (b) In case three or more holders of Debentures (hereinafter referred to as
"applicants")  apply in  writing  to the  Trustee  and  furnish  to the  Trustee
reasonable  proof that each such applicant has owned a Debenture for a period of
at least 6 months preceding the date of such  application,  and such application
states  that  the  applicants  desire  to  communicate  with  other  holders  of
Debentures  with  respect to their  rights  under this  Indenture  or under such
Debentures  and is  accompanied  by a  copy  of  the  form  of  proxy  or  other
communication which such applicants propose to transmit,  then the Trustee shall
within 5 Business Days after the receipt of such  application,  at its election,
either:

          (1) afford such applicants access to the information  preserved at the
          time by the Trustee in  accordance  with the  provisions of subsection
          (a) of this Section 4.2, or

          (2) inform such applicants as to the approximate  number of holders of
          Debentures  whose  names  and  addresses  appear  in  the  information
          preserved at the time by the Trustee in accordance with the provisions
          of subsection (a) of this Section 4.2, and as to the approximate  cost
          of  mailing  to such  Securityholders  the  form  of  proxy  or  other
          communication, if any, specified in such application.

     If the Trustee  shall elect not to afford  such  applicants  access to such
information,  the Trustee shall,  upon the written  request of such  applicants,
mail to each  Securityholder  whose name and address  appear in the  information
preserved  at the time by the  Trustee  in  accordance  with the  provisions  of
subsection  (a) of  this  Section  4.2 a copy  of the  form of  proxy  or  other
communication  which is specified in such  request  with  reasonable  promptness
after a tender to the Trustee of the  material  to be mailed and of payment,  or
provision for the payment, of the reasonable expenses of mailing,  unless within
five days after such tender,  the Trustee shall mail to such applicants and file
with the  Securities  and  Exchange  Commission,  if  permitted  or  required by
applicable  law,  together  with a copy of the material to be mailed,  a written
statement to the effect that, in the opinion of the Trustee,  such mailing would
be contrary to the best interests of the holders of all Debentures,  as the case
may be, or would be in violation of applicable law. Such written statement shall
specify the basis of such opinion. If said Commission,  as permitted or required
by applicable law, after opportunity for a hearing upon the objections specified
in the written statement so filed,  shall enter an order refusing to sustain any
of such objections or if, after the entry of an order  sustaining one or more of
such  objections,  said Commission  shall find, after notice and opportunity for
hearing,  that all the  objections so sustained have been met and shall enter an
order so  declaring,  the Trustee shall mail copies of such material to all such
Securityholders with reasonable promptness after the entry of such order and the
renewal  of  such  tender;  otherwise  the  Trustee  shall  be  relieved  of any
obligation or duty to such applicants respecting their application.

     (c) Each and every holder of Debentures, by receiving and holding the same,
agrees with Company and the Trustee that neither the Company nor the Trustee nor
any paying agent shall be held  accountable  by reason of the  disclosure of any
such  information  as to the names and addresses of the holders of Debentures in
accordance with the provisions of subsection (b) of this Section 4.2, regardless
of the source  from which such  information  was  derived,  and that the Trustee
shall not be held  accountable  by reason of mailing any material  pursuant to a
request made under said subsection (b).

                                   ARTICLE V.
                   REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                            UPON AN EVENT OF DEFAULT

     Section 5.1. Events of Default.  "Event of Default,"  wherever used herein,
means any one of the  following  events  (whatever  the reason for such Event of
Default  and  whether it shall be  voluntary  or





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involuntary  or be effected  by  operation  of law or pursuant to any  judgment,
decree  or  order  of  any  court  or  any  order,  rule  or  regulation  of any
administrative or governmental body):

     (a) the Company  defaults in the payment of any interest upon any Debenture
when it becomes due and payable,  and fails to cure such default for a period of
30 days; provided, however, that a valid extension of an interest payment period
by the  Company  in  accordance  with the  terms  of this  Indenture  shall  not
constitute a default in the payment of interest for this purpose; or

     (b) the Company defaults in the payment of all or any part of the principal
of (or premium, if any, on) any Debentures as and when the same shall become due
and payable either at maturity, upon redemption,  by declaration of acceleration
or otherwise; or

     (c) the Company  defaults in the  performance  of, or breaches,  any of its
covenants or  agreements  in this  Indenture  or in the terms of the  Debentures
established  as  contemplated  in  this  Indenture  (other  than a  covenant  or
agreement a default in whose  performance  or whose  breach is elsewhere in this
Section  specifically dealt with), and continuance of such default or breach for
a period of 60 days after there has been given, by registered or certified mail,
to the  Company by the  Trustee or to the Company and the Trustee by the holders
of at least 25% in aggregate principal amount of the outstanding  Debentures,  a
written notice specifying such default or breach and requiring it to be remedied
and stating that such notice is a "Notice of Default" hereunder; or

     (d) a court of  competent  jurisdiction  shall  enter a decree or order for
relief in respect of the  Company in an  involuntary  case under any  applicable
bankruptcy, insolvency,  reorganization or other similar law now or hereafter in
effect,  or appointing a receiver,  liquidator,  assignee,  custodian,  trustee,
sequestrator (or similar official) of the Company or for any substantial part of
its property,  or ordering the winding-up or liquidation of its affairs and such
decree  or  order  shall  remain  unstayed  and in  effect  for a  period  of 90
consecutive days; or

     (e) the  Company  shall  commence a  voluntary  case  under any  applicable
bankruptcy, insolvency,  reorganization or other similar law now or hereafter in
effect, shall consent to the entry of an order for relief in an involuntary case
under any such law, or shall consent to the appointment of or taking  possession
by a receiver, liquidator, assignee, trustee, custodian,  sequestrator (or other
similar official) of the Company or of any substantial part of its property,  or
shall make any general  assignment  for the benefit of creditors,  or shall fail
generally to pay its debts as they become due; or

     (f)  the  Trust  shall  have  voluntarily  or   involuntarily   liquidated,
dissolved, wound-up its business or otherwise terminated its existence except in
connection with (i) the  distribution of the Debentures to holders of such Trust
Securities in liquidation of their  interests in the Trust,  (ii) the redemption
of  all  of  the  outstanding   Trust   Securities  or  (iii)  certain  mergers,
consolidations or amalgamations, each as permitted by the Declaration.

     If an Event  of  Default  occurs  and is  continuing  with  respect  to the
Debentures,  then, and in each and every such case,  unless the principal of the
Debentures shall have already become due and payable,  either the Trustee or the
holders of not less than 25% in  aggregate  principal  amount of the  Debentures
then  outstanding  hereunder,  by notice in writing to the  Company  (and to the
Trustee if given by  Securityholders),  may declare the entire  principal of the
Debentures  and the  interest  accrued  thereon,  if any,  to be due and payable
immediately, and upon any such declaration the same shall become immediately due
and payable.

     The foregoing provisions, however, are subject to the condition that if, at
any time after the principal of the  Debentures  shall have been so declared due
and payable, and before any judgment or decree for the payment of the moneys due
shall have been  obtained or entered as  hereinafter  provided,  (i)


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the Company shall pay or shall deposit with the Trustee a sum  sufficient to pay
all matured  installments  of interest upon all the Debentures and the principal
of and premium,  if any, on the Debentures which shall have become due otherwise
than by acceleration (with interest upon such principal and premium, if any, and
Additional  Interest) and such amount as shall be sufficient to cover reasonable
compensation  to the  Trustee and each  predecessor  Trustee,  their  respective
agents, attorneys and counsel, and all other amounts due to the Trustee pursuant
to Section  6.6, if any,  and (ii) all Events of Default  under this  Indenture,
other than the non-payment of the principal of or premium, if any, on Debentures
which shall have become due by  acceleration,  shall have been cured,  waived or
otherwise remedied as provided herein -- then and in every such case the holders
of a majority in aggregate  principal amount of the Debentures then outstanding,
by written notice to the Company and to the Trustee,  may waive all defaults and
rescind and annul such declaration and its  consequences,  but no such waiver or
rescission and annulment shall extend to or shall affect any subsequent  default
or shall impair any right consequent thereon.

     In case the Trustee  shall have  proceeded  to enforce any right under this
Indenture and such proceedings shall have been discontinued or abandoned because
of such  rescission  or  annulment  or for any other  reason or shall  have been
determined  adversely to the  Trustee,  then and in every such case the Company,
the Trustee and the holders of the Debentures shall be restored  respectively to
their  several  positions  and rights  hereunder,  and all rights,  remedies and
powers of the  Company,  the  Trustee and the  holders of the  Debentures  shall
continue as though no such proceeding had been taken.

     Section 5.2. Payment of Debentures on Default;  Suit Therefor.  The Company
covenants  that upon the  occurrence of an Event of Default  pursuant to Section
5.1(a) or Section 5.1(b) then, upon demand of the Trustee,  the Company will pay
to the  Trustee,  for the  benefit of the  holders of the  Debentures  the whole
amount  that then  shall  have  become due and  payable  on all  Debentures  for
principal  and premium,  if any, or interest,  or both, as the case may be, with
Additional  Interest  accrued on the  Debentures  (to the extent that payment of
such interest is  enforceable  under  applicable  law and, if the Debentures are
held by the Trust or a trustee of such Trust,  without  duplication of any other
amounts  paid by the Trust or a trustee in respect  thereof);  and,  in addition
thereto,  such  further  amount  as shall be  sufficient  to cover the costs and
expenses of collection,  including a reasonable compensation to the Trustee, its
agents,  attorneys  and counsel,  and any other amounts due to the Trustee under
Section 6.6. In case the Company  shall fail  forthwith to pay such amounts upon
such demand,  the Trustee,  in its own name and as trustee of an express  trust,
shall be entitled and empowered to institute any actions or  proceedings  at law
or in equity for the collection of the sums so due and unpaid, and may prosecute
any such action or proceeding  to judgment or final decree,  and may enforce any
such  judgment or final decree  against the Company or any other obligor on such
Debentures and collect in the manner  provided by law out of the property of the
Company or any other  obligor on such  Debentures  wherever  situated the moneys
adjudged or decreed to be payable.

     In case there shall be pending  proceedings  for the  bankruptcy or for the
reorganization  of the  Company  or any other  obligor on the  Debentures  under
Bankruptcy  Law, or in case a receiver or trustee shall have been  appointed for
the property of the Company or such other  obligor,  or in the case of any other
similar judicial  proceedings  relative to the Company or other obligor upon the
Debentures,  or to the  creditors  or  property  of the  Company  or such  other
obligor,  the Trustee,  irrespective  of whether the principal of the Debentures
shall  then be due  and  payable  as  therein  expressed  or by  declaration  of
acceleration  or otherwise  and  irrespective  of whether the Trustee shall have
made any  demand  pursuant  to the  provisions  of this  Section  5.2,  shall be
entitled and empowered, by intervention in such proceedings or otherwise,

          (i)  to file and  prove a claim or  claims  for the  whole  amount  of
               principal  and  interest  owing  and  unpaid  in  respect  of the
               Debentures,

                                       23
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Redwood Empire Bancorp/Indenture
<PAGE>


          (ii) in case of any judicial proceedings, to file such proofs of claim
               and other papers or documents as may be necessary or advisable in
               order to have the claims of the Trustee  (including any claim for
               reasonable  compensation  to the  Trustee  and  each  predecessor
               Trustee, and their respective agents,  attorneys and counsel, and
               for  reimbursement  of all other amounts due to the Trustee under
               Section 6.6), and of the Securityholders allowed in such judicial
               proceedings  relative to the Company or any other  obligor on the
               Debentures,  or to the  creditors  or  property of the Company or
               such other  obligor,  unless  prohibited  by  applicable  law and
               regulations,  to vote on behalf of the holders of the  Debentures
               in any election of a trustee or a standby trustee in arrangement,
               reorganization,  liquidation  or other  bankruptcy  or insolvency
               proceedings or Person performing  similar functions in comparable
               proceedings,

         (iii) to collect and receive  any moneys or other  property  payable or
               deliverable on any such claims, and

          (iv) to  distribute  the same after the  deduction  of its charges and
               expenses.

Any receiver, assignee or trustee in bankruptcy or reorganization is hereby
authorized by each of the Securityholders to make such payments to the Trustee,
and, in the event that the Trustee shall consent to the making of such payments
directly to the Securityholders, to pay to the Trustee such amounts as shall be
sufficient to cover reasonable compensation to the Trustee, each predecessor
Trustee and their respective agents, attorneys and counsel, and all other
amounts due to the Trustee under Section 6.6.

     Nothing  herein  contained  shall be construed to authorize  the Trustee to
authorize or consent to or accept or adopt on behalf of any  Securityholder  any
plan of  reorganization,  arrangement,  adjustment or composition  affecting the
Debentures  or the rights of any holder  thereof or to authorize  the Trustee to
vote in respect of the claim of any Securityholder in any such proceeding.

     All rights of action and of asserting claims under this Indenture, or under
any of the Debentures,  may be enforced by the Trustee without the possession of
any  of the  Debentures,  or the  production  thereof  at  any  trial  or  other
proceeding relative thereto,  and any such suit or proceeding  instituted by the
Trustee shall be brought in its own name as trustee of an express trust, and any
recovery  of  judgment  shall be for the  ratable  benefit of the holders of the
Debentures.

     In any  proceedings  brought  by the  Trustee  (and  also  any  proceedings
involving the  interpretation  of any  provision of this  Indenture to which the
Trustee  shall be a  party),  the  Trustee  shall be held to  represent  all the
holders of the Debentures,  and it shall not be necessary to make any holders of
the Debentures parties to any such proceedings.

     Section  5.3.  Application  of Moneys  Collected  by  Trustee.  Any  moneys
collected  by the  Trustee  pursuant  to this  Article V shall be applied in the
following  order, at the date or dates fixed by the Trustee for the distribution
of such moneys,  upon presentation of the several Debentures in respect of which
moneys have been collected,  and stamping thereon the payment, if only partially
paid, and upon surrender thereof if fully paid:

     First:  To the payment of costs and expenses  incurred  by, and  reasonable
fees of, the  Trustee,  its  agents,  attorneys  and  counsel,  and of all other
amounts due to the Trustee under Section 6.6;

     Second: To the payment of all Senior  Indebtedness of the Company if and to
the extent required by Article XV;

                                       24
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Redwood Empire Bancorp/Indenture
<PAGE>


     Third:  To the payment of the amounts  then due and unpaid upon  Debentures
for principal (and premium, if any), and interest on the Debentures,  in respect
of which or for the benefit of which money has been collected,  ratably, without
preference  or  priority  of any  kind,  according  to the  amounts  due on such
Debentures (including Additional Interest); and

     Fourth: The balance, if any, to the Company.

     Section 5.4.  Proceedings  by  Securityholders.  No holder of any Debenture
shall have any right to institute any suit,  action or proceeding for any remedy
hereunder, unless such holder previously shall have given to the Trustee written
notice of an Event of  Default  with  respect to the  Debentures  and unless the
holders of not less than 25% in  aggregate  principal  amount of the  Debentures
then  outstanding  shall have given the Trustee a written  request to  institute
such  action,  suit or  proceeding  and shall have  offered to the Trustee  such
reasonable  indemnity  as  it  may  require  against  the  costs,  expenses  and
liabilities  to be  incurred  thereby,  and the  Trustee  for 60 days  after its
receipt of such  notice,  request  and offer of  indemnity  shall have failed to
institute any such action, suit or proceeding.

     Notwithstanding any other provisions in this Indenture,  however, the right
of any holder of any Debenture to receive  payment of the principal of, premium,
if any, and interest,  on such  Debenture when due, or to institute suit for the
enforcement of any such payment,  shall not be impaired or affected  without the
consent of such holder and by  accepting a Debenture  hereunder  it is expressly
understood,  intended and covenanted by the taker and holder of every  Debenture
with every  other such  taker and  holder and the  Trustee,  that no one or more
holders of Debentures shall have any right in any manner whatsoever by virtue or
by availing  itself of any  provision of this  Indenture  to affect,  disturb or
prejudice  the rights of the  holders of any other  Debentures,  or to obtain or
seek to obtain  priority  over or  preference  to any other such  holder,  or to
enforce any right under this Indenture, except in the manner herein provided and
for the equal, ratable and common benefit of all holders of Debentures.  For the
protection and  enforcement  of the  provisions of this Section,  each and every
Securityholder  and the Trustee shall be entitled to such relief as can be given
either at law or in equity.

     Section  5.5.  Proceedings  by  Trustee.  In case of an  Event  of  Default
hereunder the Trustee may in its  discretion  proceed to protect and enforce the
rights vested in it by this Indenture by such appropriate  judicial  proceedings
as the  Trustee  shall deem most  effectual  to protect  and enforce any of such
rights,  either  by suit in  equity  or by  action  at law or by  proceeding  in
bankruptcy or otherwise, whether for the specific enforcement of any covenant or
agreement  contained  in this  Indenture  or in aid of the exercise of any power
granted in this  Indenture,  or to enforce  any other legal or  equitable  right
vested in the Trustee by this Indenture or by law.

     Section 5.6.  Remedies  Cumulative and Continuing;  Delay or Omission Not a
Waiver.  Except as  otherwise  provided in Section  2.6, all powers and remedies
given by this Article V to the Trustee or to the  Securityholders  shall, to the
extent  permitted by law, be deemed  cumulative  and not  exclusive of any other
powers and remedies  available to the Trustee or the holders of the  Debentures,
by judicial  proceedings or otherwise,  to enforce the performance or observance
of the  covenants  and  agreements  contained  in this  Indenture  or  otherwise
established  with  respect to the  Debentures,  and no delay or  omission of the
Trustee or of any holder of any of the Debentures to exercise any right,  remedy
or power  accruing  upon any  Event  of  Default  occurring  and  continuing  as
aforesaid shall impair any such right, remedy or power, or shall be construed to
be a waiver of any such default or an acquiescence  therein; and, subject to the
provisions of Section 5.4,  every power and remedy given by this Article V or by
law to the Trustee or to the Securityholders may be exercised from time to time,
and as often as shall be deemed  expedient,  by the Trustee (in accordance  with
its duties under Section 6.1) or by the Securityholders.



                                       25
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

     Section 5.7. Direction of Proceedings and Waiver of Defaults by Majority of
Securityholders.  The holders of a majority in aggregate principal amount of the
Debentures affected (voting as one class) at the time outstanding shall have the
right to direct the time, method, and place of conducting any proceeding for any
remedy  available to the Trustee,  or exercising any trust or power conferred on
the Trustee with respect to such Debentures; provided, however, that (subject to
the  provisions  of Section 6.1) the Trustee  shall have the right to decline to
follow any such  direction  if the Trustee  shall  determine  that the action so
directed  would be unjustly  prejudicial  to the holders not taking part in such
direction or if the Trustee being advised by counsel  determines that the action
or proceeding so directed may not lawfully be taken or if a Responsible  Officer
of the Trustee shall  determine that the action or proceedings so directed would
involve the Trustee in personal liability.

     The holders of a majority in aggregate  principal  amount of the Debentures
at the time  outstanding  may on behalf of the holders of all of the  Debentures
waive (or modify any previously  granted waiver of) any past default or Event of
Default, and its consequences,  except a default (a) in the payment of principal
of,  premium,  if any, or interest on any of the  Debentures,  (b) in respect of
covenants or provisions  hereof which cannot be modified or amended  without the
consent  of the  holder of each  Debenture  affected,  or (c) in  respect of the
covenants  contained in Section 3.9; provided,  however,  that if the Debentures
are held by the Trust or a trustee of such trust, such waiver or modification to
such  waiver  shall  not  be  effective  until  the  holders  of a  majority  in
Liquidation Amount of Trust Securities of the Trust shall have consented to such
waiver or modification to such waiver, provided, further, that if the consent of
the holder of each outstanding  Debenture is required,  such waiver shall not be
effective  until each  holder of the Trust  Securities  of the Trust  shall have
consented to such  waiver.  Upon any such waiver,  the default  covered  thereby
shall be deemed to be cured for all purposes of this  Indenture and the Company,
the Trustee and the holders of the Debentures  shall be restored to their former
positions and rights hereunder, respectively; but no such waiver shall extend to
any  subsequent  or other  default  or Event of  Default  or  impair  any  right
consequent  thereon.  Whenever any default or Event of Default  hereunder  shall
have been waived as permitted by this Section,  said default or Event of Default
shall for all purposes of the  Debentures  and this  Indenture be deemed to have
been cured and to be not continuing.

     Section 5.8.  Notice of Defaults.  The Trustee shall,  within 90 days after
the actual  knowledge by a Responsible  Officer of the Trustee of the occurrence
of a default with respect to the Debentures, mail to all Securityholders, as the
names and addresses of such holders appear upon the Debenture  Register,  notice
of all defaults with respect to the Debentures known to the Trustee, unless such
defaults  shall have been  cured  before  the  giving of such  notice  (the term
"defaults"  for the purpose of this Section 5.8 being  hereby  defined to be the
events  specified in clauses (a), (b), (c), (d), (e) and (f) of Section 5.1, not
including  periods of grace, if any, provided for therein);  provided,  however,
that, except in the case of default in the payment of the principal of, premium,
if any, or interest on any of the Debentures,  the Trustee shall be protected in
withholding  such notice if and so long as a Responsible  Officer of the Trustee
in good faith determines that the withholding of such notice is in the interests
of the Securityholders.

     Section 5.9. Undertaking to Pay Costs. All parties to this Indenture agree,
and each holder of any  Debenture by his  acceptance  thereof shall be deemed to
have agreed,  that any court may in its discretion  require, in any suit for the
enforcement of any right or remedy under this Indenture,  or in any suit against
the Trustee for any action taken or omitted by it as Trustee,  the filing by any
party litigant in such suit of an undertaking to pay the costs of such suit, and
that  such  court  may in its  discretion  assess  reasonable  costs,  including
reasonable  attorneys'  fees and  expenses,  against any party  litigant in such
suit,  having due regard to the merits and good faith of the claims or  defenses
made by such party  litigant;  provided,  however,  that the  provisions of this
Section 5.9 shall not apply to any suit  instituted by the Trustee,  to any suit
instituted by any Securityholder,  or group of  Securityholders,  holding in the
aggregate more than 10% in principal amount of the Debentures outstanding, or to
any suit instituted by any


                                       26
1034360.1
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<PAGE>
Securityholder  for the  enforcement  of the  payment  of the  principal  of (or
premium,  if any) or interest on any  Debenture  against the Company on or after
the same shall have become due and payable.

                       ARTICLE VI. CONCERNING THE TRUSTEE

     Section 6.1. Duties and  Responsibilities  of Trustee.  With respect to the
holders of Debentures issued hereunder,  the Trustee, prior to the occurrence of
an Event of  Default  with  respect  to the  Debentures  and after the curing or
waiving of all Events of Default  which may have  occurred,  with respect to the
Debentures,  undertakes  to  perform  such  duties  and only such  duties as are
specifically set forth in this Indenture, and no implied covenants shall be read
into this  Indenture  against  the  Trustee.  In case an Event of  Default  with
respect to the Debentures has occurred (which has not been cured or waived), the
Trustee  shall  exercise  such of the  rights  and  powers  vested in it by this
Indenture,  and use the same  degree of care and skill in their  exercise,  as a
prudent man would exercise or use under the  circumstances in the conduct of his
own affairs.

     No  provision of this  Indenture  shall be construed to relieve the Trustee
from liability for its own negligent action, its own negligent failure to act or
its own willful misconduct, except that:

     (a)  prior to the  occurrence  of an  Event  of  Default  with  respect  to
Debentures  and after the curing or  waiving of all Events of Default  which may
have occurred

          (1)  the  duties  and  obligations  of the  Trustee  with  respect  to
          Debentures  shall be  determined  solely by the express  provisions of
          this  Indenture,  and the Trustee  shall not be liable  except for the
          performance  of  such  duties  and  obligations  with  respect  to the
          Debentures as are  specifically  set forth in this  Indenture,  and no
          implied  covenants or  obligations  shall be read into this  Indenture
          against the Trustee, and

          (2) in the  absence  of bad  faith  on the  part of the  Trustee,  the
          Trustee may  conclusively  rely, as to the truth of the statements and
          the  correctness  of  the  opinions   expressed   therein,   upon  any
          certificates  or opinions  furnished to the Trustee and  conforming to
          the  requirements  of this  Indenture;  but,  in the  case of any such
          certificates   or  opinions   which  by  any   provision   hereof  are
          specifically  required to be  furnished  to the  Trustee,  the Trustee
          shall be under a duty to examine the same to determine  whether or not
          they conform to the requirements of this Indenture;

     (b) the Trustee  shall not be liable for any error of judgment made in good
faith by a  Responsible  Officer or Officers of the Trustee,  unless it shall be
proved that the Trustee was negligent in ascertaining the pertinent facts; and

     (c) the  Trustee  shall not be liable with  respect to any action  taken or
omitted to be taken by it in good faith, in accordance with the direction of the
Securityholders  pursuant to Section 5.7, relating to the time, method and place
of  conducting  any  proceeding  for any remedy  available  to the  Trustee,  or
exercising any trust or power conferred upon the Trustee, under this Indenture.

     None of the  provisions  contained  in this  Indenture  shall  require  the
Trustee to expend or risk its own funds or otherwise  incur  personal  financial
liability in the  performance  of any of its duties or in the exercise of any of
its rights or powers,  if there is ground for  believing  that the  repayment of
such funds or liability  is not assured to it under the terms of this  Indenture
or indemnity  satisfactory  to the Trustee  against such risk is not  reasonably
assured to it.


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<PAGE>

     Section 6.2.  Reliance on  Documents,  Opinions,  etc.  Except as otherwise
provided in Section 6.1:

     (a) the  Trustee  may  conclusively  rely and shall be fully  protected  in
acting or refraining  from acting upon any resolution,  certificate,  statement,
instrument,  opinion,  report,  notice,  request,  consent,  order,  bond, note,
debenture  or other paper or  document  believed by it to be genuine and to have
been signed or presented by the proper party or parties;

     (b) any request, direction, order or demand of the Company mentioned herein
shall be  sufficiently  evidenced  by an  Officers'  Certificate  (unless  other
evidence in respect thereof be herein  specifically  prescribed);  and any Board
Resolution  may be evidenced  to the Trustee by a copy thereof  certified by the
Secretary or an Assistant Secretary of the Company;

     (c) the Trustee may consult with counsel of its selection and any advice or
Opinion of Counsel shall be full and complete  authorization  and  protection in
respect of any action  taken,  suffered or omitted by it hereunder in good faith
and in accordance with such advice or Opinion of Counsel;

     (d) the Trustee  shall be under no obligation to exercise any of the rights
or powers vested in it by this  Indenture at the request,  order or direction of
any of the Securityholders, pursuant to the provisions of this Indenture, unless
such  Securityholders  shall have offered to the Trustee reasonable  security or
indemnity  against the costs,  expenses  and  liabilities  which may be incurred
therein or thereby;

     (e) the Trustee  shall not be liable for any action  taken or omitted by it
in good faith and believed by it to be  authorized  or within the  discretion or
rights or powers conferred upon it by this Indenture;  nothing  contained herein
shall, however, relieve the Trustee of the obligation, upon the occurrence of an
Event of  Default  with  respect to the  Debentures  (that has not been cured or
waived) to exercise  with  respect to  Debentures  such of the rights and powers
vested in it by this Indenture,  and to use the same degree of care and skill in
their exercise,  as a prudent man would exercise or use under the  circumstances
in the conduct of his own affairs;

     (f) the Trustee shall not be bound to make any investigation into the facts
or  matters  stated  in  any  resolution,  certificate,  statement,  instrument,
opinion,  report, notice, request,  consent,  order, approval,  bond, debenture,
coupon or other paper or document,  unless  requested in writing to do so by the
holders  of not less  than a  majority  in  aggregate  principal  amount  of the
outstanding Debentures affected thereby; provided,  however, that if the payment
within a reasonable  time to the Trustee of the costs,  expenses or  liabilities
likely  to be  incurred  by it in the  making of such  investigation  is, in the
opinion of the Trustee,  not  reasonably  assured to the Trustee by the security
afforded  to it by  the  terms  of  this  Indenture,  the  Trustee  may  require
reasonable  indemnity  against  such  expense or  liability as a condition to so
proceeding;

     (g) the  Trustee  may  execute  any of the  trusts or powers  hereunder  or
perform any duties hereunder either directly or by or through agents  (including
any Authenticating Agent) or attorneys, and the Trustee shall not be responsible
for any  misconduct  or  negligence  on the part of any such  agent or  attorney
appointed by it with due care; and

     (h) with the exceptions of defaults under  Sections  5.1(a) or 5.1(b),  the
Trustee  shall not be charged with  knowledge of any Default or Event of Default
with respect to the Debentures  unless a written notice of such Default or Event
of  Default  shall have been  given to the  Trustee by the  Company or any other
obligor on the Debentures or by any holder of the Debentures.

     Section 6.3. No Responsibility  for Recitals,  etc. The recitals  contained
herein and in the Debentures (except in the certificate of authentication of the
Trustee or the  Authenticating  Agent) shall be

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taken as the statements of the Company,  and the Trustee and the  Authenticating
Agent assume no responsibility  for the correctness of the same. The Trustee and
the  Authenticating  Agent  make  no  representations  as  to  the  validity  or
sufficiency  of  this  Indenture  or of the  Debentures.  The  Trustee  and  the
Authenticating  Agent shall not be accountable for the use or application by the
Company of any  Debentures or the proceeds of any Debentures  authenticated  and
delivered  by the Trustee or the  Authenticating  Agent in  conformity  with the
provisions of this Indenture.

     Section 6.4. Trustee,  Authenticating Agent, Paying Agents, Transfer Agents
or Registrar May Own Debentures.  The Trustee or any Authenticating Agent or any
paying agent or any transfer agent or any Debenture registrar, in its individual
or any other  capacity,  may become the owner or pledgee of Debentures  with the
same rights it would have if it were not Trustee,  Authenticating  Agent, paying
agent, transfer agent or Debenture registrar.

     Section  6.5.  Moneys to be Held in Trust.  Subject  to the  provisions  of
Section  12.4,  all moneys  received by the Trustee or any paying  agent  shall,
until used or applied as herein  provided,  be held in trust for the purpose for
which they were received,  but need not be segregated from other funds except to
the extent  required by law.  The Trustee and any paying agent shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed in writing  with the Company.  So long as no Event of Default  shall have
occurred and be  continuing,  all  interest  allowed on any such moneys shall be
paid from  time to time upon the  written  order of the  Company,  signed by the
Chairman of the Board of Directors,  the Chief Executive Officer, the President,
a Managing Director,  a Vice President,  the Treasurer or an Assistant Treasurer
of the Company.

     Section 6.6.  Compensation and Expenses of Trustee.  The Company  covenants
and agrees to pay or reimburse  the Trustee upon its request for all  reasonable
expenses,  disbursements  and  advances  incurred  or  made  by the  Trustee  in
accordance  with  any  of  the  provisions  of  this  Indenture  (including  the
reasonable compensation and the expenses and disbursements of its counsel and of
all Persons not regularly in its employ)  except any such expense,  disbursement
or advance as may arise from its negligence or willful misconduct.  For purposes
of  clarification,  this  Section  6.6 does not  contemplate  the payment by the
Company  of  acceptance  or  annual  administration  fees  owing to the  Trustee
pursuant to the services to be provided by the Trustee  under this  Indenture or
the fees and expenses of the Trustee's counsel in connection with the closing of
the transactions  contemplated by this Indenture.  The Company also covenants to
indemnify  each of the Trustee or any  predecessor  Trustee  (and its  officers,
agents,  directors and employees) for, and to hold it harmless against,  any and
all loss, damage, claim,  liability or expense including taxes (other than taxes
based on the  income of the  Trustee)  incurred  without  negligence  or willful
misconduct on the part of the Trustee and arising out of or in  connection  with
the acceptance or administration of this trust, including the costs and expenses
of defending  itself  against any claim of  liability.  The  obligations  of the
Company  under this Section 6.6 to  compensate  and indemnify the Trustee and to
pay or reimburse  the Trustee for  expenses,  disbursements  and advances  shall
constitute additional indebtedness hereunder. Such additional indebtedness shall
be secured by a lien prior to that of the Debentures upon all property and funds
held or  collected  by the Trustee as such,  except  funds held in trust for the
benefit of the holders of particular Debentures.

     Without  prejudice  to any other  rights  available  to the  Trustee  under
applicable  law,  when the  Trustee  incurs  expenses  or  renders  services  in
connection with an Event of Default specified in Section 5.1(d),  Section 5.1(e)
or Section 5.1(f),  the expenses  (including the reasonable charges and expenses
of its counsel) and the compensation for the services are intended to constitute
expenses of  administration  under any applicable  federal or state  bankruptcy,
insolvency or other similar law.

     The provisions of this Section shall survive the  resignation or removal of
the Trustee and the defeasance or other termination of this Indenture.


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     Notwithstanding  anything  in  this  Indenture  or  any  Debenture  to  the
contrary,  the Trustee shall have no  obligation  whatsoever to advance funds to
pay any  principal  of or  interest  on or other  amounts  with  respect  to the
Debentures or otherwise advance funds to or on behalf of the Company.

     Section  6.7.  Officers'  Certificate  as  Evidence.  Except  as  otherwise
provided  in  Sections  6.1  and  6.2,  whenever  in the  administration  of the
provisions  of this  Indenture  the Trustee shall deem it necessary or desirable
that a matter be proved or  established  prior to taking or omitting  any action
hereunder,  such matter  (unless  other  evidence  in respect  thereof be herein
specifically prescribed) may, in the absence of negligence or willful misconduct
on the part of the Trustee,  be deemed to be conclusively proved and established
by an Officers' Certificate  delivered to the Trustee, and such certificate,  in
the absence of  negligence  or willful  misconduct  on the part of the  Trustee,
shall be full warrant to the Trustee for any action taken or omitted by it under
the provisions of this Indenture upon the faith thereof.

     Section 6.8.  Eligibility of Trustee.  The Trustee  hereunder  shall at all
times be a corporation organized and doing business under the laws of the United
States of  America  or any state or  territory  thereof  or of the  District  of
Columbia or a corporation or other Person authorized under such laws to exercise
corporate trust powers,  having (or whose  obligations  under this Indenture are
guaranteed by an affiliate having) a combined capital and surplus of at least 50
million U.S. dollars  ($50,000,000.00) and subject to supervision or examination
by federal,  state,  territorial,  or District  of Columbia  authority.  If such
corporation publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid  supervising or examining  authority,  then
for the purposes of this  Section 6.8 the  combined  capital and surplus of such
corporation  shall be deemed to be its combined capital and surplus as set forth
in its most recent records of condition so published.

     The Company may not, nor may any Person directly or indirectly controlling,
controlled by, or under common control with the Company, serve as Trustee.

     In case at any time the Trustee  shall  cease to be eligible in  accordance
with the provisions of this Section 6.8, the Trustee shall resign immediately in
the manner and with the effect specified in Section 6.9.

     If the Trustee has or shall acquire any  "conflicting  interest" within the
meaning of  ss.310(b)  of the Trust  Indenture  Act of 1939,  the Trustee  shall
either  eliminate  such  interest  or  resign,  to the  extent and in the manner
described by this Indenture.

     Section 6.9. Resignation or Removal of Trustee

     (a) The Trustee, or any trustee or trustees hereafter appointed, may at any
time resign by giving written  notice of such  resignation to the Company and by
mailing  notice  thereof,  at  the  Company's  expense,  to the  holders  of the
Debentures at their  addresses as they shall appear on the  Debenture  Register.
Upon receiving such notice of resignation,  the Company shall promptly appoint a
successor trustee or trustees by written instrument,  in duplicate,  executed by
order of its Board of Directors, one copy of which instrument shall be delivered
to the resigning Trustee and one copy to the successor Trustee.  If no successor
Trustee  shall have been so appointed and have  accepted  appointment  within 30
days  after  the  mailing  of  such  notice  of   resignation  to  the  affected
Securityholders,  the  resigning  Trustee may  petition  any court of  competent
jurisdiction for the appointment of a successor  Trustee,  or any Securityholder
who has been a bona fide holder of a Debenture  or  Debentures  for at least six
months may,  subject to the  provisions of Section 5.9, on behalf of himself and
all others similarly situated,  petition any such court for the appointment of a
successor  Trustee.  Such court may thereupon,  after such notice, if any, as it
may deem proper and prescribe, appoint a successor Trustee.



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     (b) In case at any time any of the following shall occur --

          (1) the Trustee  shall fail to comply with the  provisions  of Section
          6.8  after  written  request   therefor  by  the  Company  or  by  any
          Securityholder  who has been a bona  fide  holder  of a  Debenture  or
          Debentures for at least 6 months, or

          (2) the Trustee  shall cease to be  eligible  in  accordance  with the
          provisions  of  Section  6.8 and shall  fail to resign  after  written
          request therefor by the Company or by any such Securityholder, or

          (3) the Trustee shall become incapable of acting, or shall be adjudged
          as  bankrupt  or  insolvent,  or a receiver  of the  Trustee or of its
          property  shall be appointed,  or any public officer shall take charge
          or  control  of the  Trustee or of its  property  or  affairs  for the
          purpose of rehabilitation, conservation or liquidation,

then,  in any such  case,  the  Company  may remove the  Trustee  and  appoint a
successor Trustee by written instrument, in duplicate,  executed by order of the
Board of  Directors,  one copy of which  instrument  shall be  delivered  to the
Trustee so removed and one copy to the  successor  Trustee,  or,  subject to the
provisions of Section 5.9, any Securityholder who has been a bona fide holder of
a Debenture  or  Debentures  for at least 6 months may, on behalf of himself and
all others similarly situated,  petition any court of competent jurisdiction for
the removal of the  Trustee and the  appointment  of a successor  Trustee.  Such
court may  thereupon,  after  such  notice,  if any,  as it may deem  proper and
prescribe, remove the Trustee and appoint successor Trustee.

     (c) Upon prior written  notice to the Company and the Trustee,  the holders
of a  majority  in  aggregate  principal  amount of the  Debentures  at the time
outstanding may at any time remove the Trustee and nominate a successor Trustee,
which shall be deemed  appointed as successor  Trustee unless within 10 Business
Days after such nomination the Company objects thereto, in which case, or in the
case of a failure by such holders to nominate a successor  Trustee,  the Trustee
so removed or any Securityholder, upon the terms and conditions and otherwise as
in  subsection  (a) of this  Section 6.9  provided,  may  petition  any court of
competent jurisdiction for an appointment of a successor.

     (d)  Any  resignation  or  removal  of the  Trustee  and  appointment  of a
successor Trustee pursuant to any of the provisions of this Section shall become
effective upon acceptance of appointment by the successor Trustee as provided in
Section 6.10.

     Section  6.10.  Acceptance  by Successor  Trustee.  Any  successor  Trustee
appointed as provided in Section 6.9 shall execute,  acknowledge  and deliver to
the  Company  and  to its  predecessor  Trustee  an  instrument  accepting  such
appointment hereunder,  and thereupon the resignation or removal of the retiring
Trustee shall become effective and such successor  Trustee,  without any further
act, deed or conveyance, shall become vested with all the rights, powers, duties
and  obligations  with respect to the Debentures of its  predecessor  hereunder,
with like effect as if originally named as Trustee herein; but, nevertheless, on
the written  request of the  Company or of the  successor  Trustee,  the Trustee
ceasing to act shall,  upon  payment of any amounts  then due it pursuant to the
provisions  of Section 6.6,  execute and deliver an instrument  transferring  to
such  successor  Trustee  all the rights and powers of the Trustee so ceasing to
act and shall duly assign,  transfer and deliver to such  successor  Trustee all
property and money held by such retiring Trustee thereunder. Upon request of any
such  successor  Trustee,  the Company shall execute any and all  instruments in
writing for more fully and certainly vesting in and confirming to such successor
Trustee  all  such  rights  and  powers.  Any  Trustee  ceasing  to  act  shall,
nevertheless, retain a lien upon all property or funds held or collected by such
Trustee to secure any amounts then due it pursuant to the  provisions of Section
6.6.



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     If a successor Trustee is appointed,  the Company, the retiring Trustee and
the successor Trustee shall execute and deliver an indenture supplemental hereto
which shall contain such provisions as shall be deemed necessary or desirable to
confirm that all the rights,  powers,  trusts and duties of the retiring Trustee
with  respect  to the  Debentures  as to which the  predecessor  Trustee  is not
retiring shall continue to be vested in the predecessor  Trustee,  and shall add
to or change any of the  provisions  of this  Indenture as shall be necessary to
provide for or facilitate the administration of the Trust hereunder by more than
one Trustee,  it being  understood  that nothing herein or in such  supplemental
indenture shall constitute such Trustees  co-trustees of the same trust and that
each such Trustee shall be Trustee of a trust or trusts  hereunder  separate and
apart from any trust or trusts hereunder administered by any other such Trustee.

     No successor  Trustee shall accept  appointment as provided in this Section
unless at the time of such acceptance  such successor  Trustee shall be eligible
under the provisions of Section 6.8.

     In no event shall a retiring Trustee be liable for the acts or omissions of
any successor Trustee hereunder.

     Upon  acceptance of appointment by a successor  Trustee as provided in this
Section 6.10,  the Company  shall mail notice of the  succession of such Trustee
hereunder to the holders of Debentures  at their  addresses as they shall appear
on the  Debenture  Register.  If the Company fails to mail such notice within 10
Business Days after the acceptance of appointment by the successor Trustee,  the
successor  Trustee  shall  cause such  notice to be mailed at the expense of the
Company.

     Section 6.11.  Succession by Merger,  etc. Any  corporation  into which the
Trustee may be merged or converted or with which it may be consolidated,  or any
corporation resulting from any merger,  conversion or consolidation to which the
Trustee shall be a party, or any corporation  succeeding to all or substantially
all of the corporate  trust  business of the Trustee,  shall be the successor of
the  Trustee  hereunder  without  the  execution  or  filing of any paper or any
further act on the part of any of the parties hereto;  provided such corporation
shall be otherwise eligible and qualified under this Article.

     In case at the time such  successor  to the  Trustee  shall  succeed to the
trusts  created  by  this  Indenture  any  of the  Debentures  shall  have  been
authenticated but not delivered, any such successor to the Trustee may adopt the
certificate  of  authentication  of any  predecessor  Trustee,  and deliver such
Debentures  so  authenticated;  and in case at that  time any of the  Debentures
shall not have been authenticated, any successor to the Trustee may authenticate
such Debentures  either in the name of any predecessor  hereunder or in the name
of the successor Trustee; and in all such cases such certificates shall have the
full force which it is anywhere in the Debentures or in this Indenture  provided
that the  certificate  of the Trustee shall have;  provided,  however,  that the
right to adopt the certificate of authentication  of any predecessor  Trustee or
authenticate  Debentures in the name of any predecessor Trustee shall apply only
to its successor or successors by merger, conversion or consolidation.

     Section   6.12.   Authenticating   Agents.   There   may  be  one  or  more
Authenticating  Agents  appointed by the Trustee upon the request of the Company
with  power  to  act  on  its  behalf  and  subject  to  its  direction  in  the
authentication  and delivery of Debentures  issued upon exchange or registration
of  transfer  thereof as fully to all  intents  and  purposes as though any such
Authenticating  Agent had been expressly  authorized to authenticate and deliver
Debentures;  provided,  however, that the Trustee shall have no liability to the
Company for any acts or  omissions of the  Authenticating  Agent with respect to
the authentication  and delivery of Debentures.  Any such  Authenticating  Agent
shall at all times be a corporation  organized and doing business under the laws
of the United States or of any state or territory  thereof or of the District of
Columbia  authorized under such laws to act as  Authenticating  Agent,  having a
combined  capital and surplus of at least  $50,000,000.00  and being  subject to
supervision  or  examination  by  federal,  state,  territorial  or  District of
Columbia authority.  If such corporation publishes reports of condition at least
annually  pursuant to law or the  requirements of such  authority,  then for the
purposes  of

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<PAGE>

this Section 6.12 the combined capital and surplus of such corporation  shall be
deemed to be its  combined  capital  and surplus as set forth in its most recent
report of condition so published.  If at any time an Authenticating  Agent shall
cease to be eligible in accordance with the provisions of this Section, it shall
resign  immediately  in the manner and with the effect herein  specified in this
Section.

     Any  corporation  into  which  any  Authenticating  Agent  may be merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  consolidation or conversion to which any Authenticating  Agent
shall be a party, or any corporation  succeeding to all or substantially  all of
the corporate trust business of any Authenticating Agent, shall be the successor
of such  Authenticating  Agent  hereunder,  if  such  successor  corporation  is
otherwise  eligible  under this Section 6.12 without the  execution or filing of
any  paper  or any  further  act on the  part  of the  parties  hereto  or  such
Authenticating Agent.

     Any Authenticating Agent may at any time resign by giving written notice of
resignation  to the  Trustee  and to the  Company.  The  Trustee may at any time
terminate the agency of any Authenticating  Agent with respect to the Debentures
by giving written notice of termination to such Authenticating  Agent and to the
Company. Upon receiving such a notice of resignation or upon such a termination,
or in case at any time any Authenticating Agent shall cease to be eligible under
this Section 6.12,  the Trustee may, and upon the request of the Company  shall,
promptly  appoint a successor  Authenticating  Agent eligible under this Section
6.12,  shall give written  notice of such  appointment  to the Company and shall
mail notice of such  appointment  to all holders of  Debentures as the names and
addresses  of such  holders  appear on the  Debenture  Register.  Any  successor
Authenticating  Agent upon acceptance of its appointment  hereunder shall become
vested with all rights,  powers, duties and responsibilities with respect to the
Debentures of its predecessor hereunder, with like effect as if originally named
as Authenticating Agent herein.

     The  Company  agrees to pay to any  Authenticating  Agent from time to time
reasonable compensation for its services. Any Authenticating Agent shall have no
responsibility  or liability  for any action  taken by it as such in  accordance
with the directions of the Trustee.

                                  ARTICLE VII.
                         CONCERNING THE SECURITYHOLDERS

     Section 7.1.  Action by  Securityholders.  Whenever in this Indenture it is
provided  that the  holders of a specified  percentage  in  aggregate  principal
amount of the Debentures may take any action (including the making of any demand
or  request,  the giving of any  notice,  consent or waiver or the taking of any
other action) the fact that at the time of taking any such action the holders of
such  specified  percentage  have  joined  therein may be  evidenced  (a) by any
instrument  or any number of  instruments  of  similar  tenor  executed  by such
Securityholders  in person or by agent or proxy appointed in writing,  or (b) by
the record of such holders of Debentures  voting in favor thereof at any meeting
of such  Securityholders  duly called and held in accordance with the provisions
of Article VIII, or (c) by a combination of such  instrument or instruments  and
any such  record of such a meeting of such  Securityholders  or (d) by any other
method the Trustee deems satisfactory.

     If the Company shall solicit from the Securityholders any request,  demand,
authorization,  direction, notice, consent, waiver or other action or revocation
of the same,  the Company  may,  at its option,  as  evidenced  by an  Officers'
Certificate,  fix  in  advance  a  record  date  for  such  Debentures  for  the
determination  of  Securityholders   entitled  to  give  such  request,  demand,
authorization,  direction, notice, consent, waiver or other action or revocation
of the same, but the Company shall have no obligation to do so. If such a record
date is fixed, such request, demand, authorization,  direction, notice, consent,
waiver or other  action or  revocation  of the same may be given before or after
the record date, but only the Securityholders of record at the close of business
on the record  date shall be deemed to be  Securityholders

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<PAGE>

for  the  purposes  of  determining  whether  Securityholders  of the  requisite
proportion of outstanding  Debentures  have authorized or agreed or consented to
such request, demand, authorization, direction, notice, consent, waiver or other
action  or  revocation  of the  same,  and  for  that  purpose  the  outstanding
Debentures shall be computed as of the record date; provided,  however,  that no
such authorization,  agreement or consent by such  Securityholders on the record
date shall be deemed effective unless it shall become effective  pursuant to the
provisions of this Indenture not later than 6 months after the record date.

     Section  7.2.  Proof  of  Execution  by  Securityholders.  Subject  to  the
provisions of Section 6.1, 6.2 and 8.5, proof of the execution of any instrument
by a  Securityholder  or his  agent or  proxy  shall  be  sufficient  if made in
accordance  with such  reasonable  rules and regulations as may be prescribed by
the  Trustee or in such  manner as shall be  satisfactory  to the  Trustee.  The
ownership  of  Debentures  shall be proved  by the  Debenture  Register  or by a
certificate of the Debenture registrar.  The Trustee may require such additional
proof of any matter referred to in this Section as it shall deem necessary.

     The record of any  Securityholders'  meeting  shall be proved in the manner
provided in Section 8.6.

     Section 7.3. Who Are Deemed Absolute  Owners.  Prior to due presentment for
registration  of  transfer of any  Debenture,  the  Company,  the  Trustee,  any
Authenticating  Agent,  any paying agent,  any transfer  agent and any Debenture
registrar may deem the Person in whose name such  Debenture  shall be registered
upon the Debenture  Register to be, and may treat him as, the absolute  owner of
such Debenture  (whether or not such Debenture shall be overdue) for the purpose
of receiving payment of or on account of the principal of, premium,  if any, and
interest on such Debenture and for all other  purposes;  and neither the Company
nor the  Trustee  nor any  Authenticating  Agent  nor any  paying  agent nor any
transfer  agent nor any Debenture  registrar  shall be affected by any notice to
the contrary. All such payments so made to any holder for the time being or upon
his  order  shall  be  valid,  and,  to the  extent  of the sum or sums so paid,
effectual to satisfy and discharge  the  liability  for moneys  payable upon any
such Debenture.

     Section  7.4.  Debentures  Owned by  Company  Deemed  Not  Outstanding.  In
determining  whether the holders of the requisite  aggregate principal amount of
Debentures  have  concurred  in any  direction,  consent  or waiver  under  this
Indenture, Debentures which are owned by the Company or any other obligor on the
Debentures or by any Person directly or indirectly  controlling or controlled by
or under direct or indirect common control with the Company or any other obligor
on the Debentures  shall be disregarded and deemed not to be outstanding for the
purpose of any such determination;  provided,  however, that for the purposes of
determining  whether  the  Trustee  shall be  protected  in  relying on any such
direction, consent or waiver, only Debentures which a Responsible Officer of the
Trustee actually knows are so owned shall be so disregarded. Debentures so owned
which have been  pledged in good faith may be  regarded as  outstanding  for the
purposes of this Section 7.4 if the pledgee shall establish to the  satisfaction
of the Trustee the pledgee's  right to vote such Debentures and that the pledgee
is not the Company or any such other  obligor or Person  directly or  indirectly
controlling or controlled by or under direct or indirect common control with the
Company or any such other  obligor.  In the case of a dispute as to such  right,
any  decision  by the  Trustee  taken upon the  advice of counsel  shall be full
protection to the Trustee.

     Section 7.5.  Revocation of Consents;  Future  Holders  Bound.  At any time
prior to (but not after) the  evidencing to the Trustee,  as provided in Section
7.1, of the taking of any action by the holders of the  percentage  in aggregate
principal  amount of the  Debentures  specified in this  Indenture in connection
with  such  action,  any  holder  (in cases  where no  record  date has been set
pursuant to Section 7.1) or any holder as of an applicable record date (in cases
where a record date has been set pursuant to Section 7.1) of a Debenture (or any
Debenture  issued in whole or in part in exchange or


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substitution therefor) the serial number of which is shown by the evidence to be
included in the  Debentures  the holders of which have  consented to such action
may, by filing  written  notice with the Trustee at the Principal  Office of the
Trustee and upon proof of holding as provided in Section 7.2, revoke such action
so far as concerns such  Debenture  (or so far as concerns the principal  amount
represented by any exchanged or substituted Debenture).  Except as aforesaid any
such action taken by the holder of any Debenture shall be conclusive and binding
upon such holder and upon all future holders and owners of such  Debenture,  and
of any Debenture issued in exchange or substitution  therefor or on registration
of  transfer  thereof,  irrespective  of whether or not any  notation  in regard
thereto is made upon such  Debenture  or any  Debenture  issued in  exchange  or
substitution therefor.

                                 ARTICLE VIII.
                            SECURITYHOLDERS' MEETINGS

     Section 8.1.  Purposes of  Meetings.  A meeting of  Securityholders  may be
called  at any time and from time to time  pursuant  to the  provisions  of this
Article VIII for any of the following purposes:

     (a) to give any  notice to the  Company or to the  Trustee,  or to give any
directions to the Trustee, or to consent to the waiving of any default hereunder
and its  consequences,  or to take any other  action  authorized  to be taken by
Securityholders pursuant to any of the provisions of Article V;

     (b) to remove the Trustee and nominate a successor  trustee pursuant to the
provisions of Article VI;

     (c) to consent to the execution of an indenture or indentures  supplemental
hereto pursuant to the provisions of Section 9.2; or

     (d) to take any other action  authorized to be taken by or on behalf of the
holders of any specified aggregate principal amount of such Debentures under any
other provision of this Indenture or under applicable law.

     Section 8.2. Call of Meetings by Trustee.  The Trustee may at any time call
a meeting of  Securityholders to take any action specified in Section 8.1, to be
held at such time and at such place as the Trustee  shall  determine.  Notice of
every  meeting of the  Securityholders,  setting forth the time and the place of
such  meeting  and in  general  terms the  action  proposed  to be taken at such
meeting, shall be mailed to holders of Debentures affected at their addresses as
they shall appear on the Debentures Register and, if the Company is not a holder
of Debentures,  to the Company. Such notice shall be mailed not less than 20 nor
more than 180 days prior to the date fixed for the meeting.

     Section 8.3. Call of Meetings by Company or Securityholders. In case at any
time the Company pursuant to a Board Resolution,  or the holders of at least 10%
in  aggregate  principal  amount  of the  Debentures,  as the case may be,  then
outstanding,   shall  have   requested   the   Trustee  to  call  a  meeting  of
Securityholders,  by written  request  setting  forth in  reasonable  detail the
action  proposed  to be taken at the  meeting,  and the  Trustee  shall not have
mailed the notice of such meeting  within 20 days after receipt of such request,
then the Company or such  Securityholders  may  determine the time and the place
for such  meeting  and may call such  meeting to take any action  authorized  in
Section 8.1, by mailing notice thereof as provided in Section 8.2.

     Section  8.4.  Qualifications  for  Voting.  To be  entitled to vote at any
meeting  of  Securityholders  a  Person  shall  (a) be a  holder  of one or more
Debentures  with  respect  to which the  meeting  is being  held or (b) a Person
appointed by an  instrument  in writing as proxy by a holder of one or more such
Debentures.  The only Persons who shall be entitled to be present or to speak at
any meeting of


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Securityholders  shall be the Persons entitled to vote at such meeting and their
counsel  and  any  representatives  of the  Trustee  and  its  counsel  and  any
representatives of the Company and its counsel.

     Section 8.5.  Regulations.  Notwithstanding  any other  provisions  of this
Indenture,  the  Trustee  may make such  reasonable  regulations  as it may deem
advisable for any meeting of Securityholders,  in regard to proof of the holding
of  Debentures  and  of  the  appointment  of  proxies,  and  in  regard  to the
appointment and duties of inspectors of votes, the submission and examination of
proxies,  certificates  and other  evidence of the right to vote, and such other
matters concerning the conduct of the meeting as it shall think fit.

     The  Trustee  shall,  by an  instrument  in  writing,  appoint a  temporary
chairman  of the  meeting,  unless the  meeting  shall  have been  called by the
Company or by  Securityholders  as  provided  in Section  8.3, in which case the
Company or the Securityholders calling the meeting, as the case may be, shall in
like manner appoint a temporary  chairman.  A permanent chairman and a permanent
secretary of the meeting shall be elected by majority vote of the meeting.

     Subject to the  provisions  of Section  7.4, at any meeting  each holder of
Debentures  with respect to which such  meeting is being held or proxy  therefor
shall be entitled to one vote for each $1,000.00  principal amount of Debentures
held or represented  by him;  provided,  however,  that no vote shall be cast or
counted at any meeting in respect of any Debenture challenged as not outstanding
and ruled by the chairman of the meeting to be not outstanding.  The chairman of
the meeting shall have no right to vote other than by virtue of Debentures  held
by him or instruments in writing as aforesaid duly designating him as the Person
to vote on behalf of other Securityholders.  Any meeting of Securityholders duly
called  pursuant to the  provisions of Section 8.2 or 8.3 may be adjourned  from
time to time by a  majority  of those  present,  whether or not  constituting  a
quorum, and the meeting may be held as so adjourned without further notice.

     Section 8.6. Voting. The vote upon any resolution  submitted to any meeting
of holders of Debentures  with respect to which such meeting is being held shall
be by written  ballots  on which  shall be  subscribed  the  signatures  of such
holders or of their representatives by proxy and the serial number or numbers of
the  Debentures  held or  represented  by them.  The  permanent  chairman of the
meeting shall appoint two  inspectors of votes who shall count all votes cast at
the meeting for or against any  resolution  and who shall make and file with the
secretary of the meeting  their  verified  written  reports in triplicate of all
votes cast at the  meeting.  A record in duplicate  of the  proceedings  of each
meeting of Securityholders shall be prepared by the secretary of the meeting and
there shall be attached to said record the original reports of the inspectors of
votes on any vote by ballot taken thereat and  affidavits by one or more Persons
having  knowledge of the facts setting forth a copy of the notice of the meeting
and showing  that said notice was mailed as provided in Section  8.2. The record
shall show the serial  numbers of the  Debentures  voting in favor of or against
any resolution. The record shall be signed and verified by the affidavits of the
permanent  chairman and secretary of the meeting and one of the duplicates shall
be  delivered to the Company and the other to the Trustee to be preserved by the
Trustee, the latter to have attached thereto the ballots voted at the meeting.

     Any record so signed  and  verified  shall be  conclusive  evidence  of the
matters therein stated.

     Section 8.7.  Quorum;  Actions.  The Persons entitled to vote a majority in
principal  amount of the Debentures then  outstanding  shall constitute a quorum
for a meeting of Securityholders; provided, however, that if any action is to be
taken at such  meeting  with  respect to a  consent,  waiver,  request,  demand,
notice,  authorization,  direction  or other  action  which  may be given by the
holders  of not less than a  specified  percentage  in  principal  amount of the
Debentures then outstanding,  the Persons holding or representing such specified
percentage  in  principal   amount  of  the  Debentures  then  outstanding  will
constitute  a quorum.  In the absence of a quorum  within 30 minutes of the time
appointed for any such


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meeting,  the meeting shall, if convened at the request of  Securityholders,  be
dissolved.  In any other case the meeting may be  adjourned  for a period of not
less than 10 days as determined  by the permanent  chairman of the meeting prior
to the  adjournment  of such  meeting.  In the  absence  of a quorum at any such
adjourned meeting,  such adjourned meeting may be further adjourned for a period
of not less than 10 days as determined by the permanent  chairman of the meeting
prior to the adjournment of such adjourned meeting. Notice of the reconvening of
any  adjourned  meeting  shall be given as provided in Section 8.2,  except that
such  notice  need be given  only once not less than 5 days prior to the date on
which the meeting is scheduled to be reconvened. Notice of the reconvening of an
adjourned  meeting shall state expressly the  percentage,  as provided above, of
the principal amount of the Debentures then outstanding which shall constitute a
quorum.

     Except as limited by the  provisos in the first  paragraph  of Section 9.2,
any resolution  presented to a meeting or adjourned  meeting duly  reconvened at
which a quorum is present as aforesaid may be adopted by the affirmative vote of
the  holders  of  a  majority  in  principal   amount  of  the  Debentures  then
outstanding;  provided,  however, that, except as limited by the provisos in the
first  paragraph  of Section 9.2,  any  resolution  with respect to any consent,
waiver, request, demand, notice, authorization,  direction or other action which
this Indenture expressly provides may be given by the holders of not less than a
specified  percentage in principal amount of the Debentures then outstanding may
be adopted at a meeting or an adjourned  meeting duly  reconvened and at which a
quorum is present as aforesaid only by the affirmative  vote of the holders of a
not less than such  specified  percentage in principal  amount of the Debentures
then outstanding.

     Any  resolution  passed or  decision  taken at any  meeting  of  holders of
Debentures duly held in accordance with this Section shall be binding on all the
Securityholders, whether or not present or represented at the meeting.

                                  ARTICLE IX.
                             SUPPLEMENTAL INDENTURES

     Section 9.1.  Supplemental  Indentures without Consent of  Securityholders.
The Company,  when  authorized by a Board  Resolution,  and the Trustee may from
time to time and at any time enter into an indenture or indentures  supplemental
hereto,  without  the  consent  of the  Securityholders,  for one or more of the
following purposes:

     (a) to  evidence  the  succession  of  another  Person to the  Company,  or
successive  successions,  and the  assumption  by the  successor  Person  of the
covenants,  agreements and  obligations  of the Company,  pursuant to Article XI
hereof;

     (b) to add  to  the  covenants  of  the  Company  such  further  covenants,
restrictions  or conditions  for the  protection of the holders of Debentures as
the Board of Directors shall consider to be for the protection of the holders of
such Debentures,  and to make the occurrence, or the occurrence and continuance,
of a default in any of such additional  covenants,  restrictions or conditions a
default or an Event of Default  permitting the  enforcement of all or any of the
several  remedies  provided  in this  Indenture  as herein set forth;  provided,
however,  that  in  respect  of any  such  additional  covenant  restriction  or
condition  such  supplemental  indenture may provide for a particular  period of
grace after default  (which period may be shorter or longer than that allowed in
the case of other  defaults)  or may provide for an immediate  enforcement  upon
such  default  or may limit the  remedies  available  to the  Trustee  upon such
default;

     (c) to cure  any  ambiguity  or to  correct  or  supplement  any  provision
contained  herein or in any  supplemental  indenture  which may be  defective or
inconsistent  with any other provision  contained  herein or in any supplemental
indenture,  or to make such other  provisions  in regard to matters


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or questions  arising under this Indenture;  provided that any such action shall
not materially adversely affect the interests of the holders of the Debentures;

     (d) to add to, delete from, or revise the terms of  Debentures,  including,
without limitation, any terms relating to the issuance,  exchange,  registration
or transfer of  Debentures,  including  to provide for transfer  procedures  and
restrictions substantially similar to those applicable to the Capital Securities
as required by Section 2.5 (for  purposes of assuring  that no  registration  of
Debentures is required under the Securities Act);  provided,  however,  that any
such  action  shall not  adversely  affect the  interests  of the holders of the
Debentures then outstanding (it being understood,  for purposes of this proviso,
that transfer  restrictions  on Debentures  substantially  similar to those that
were  applicable  to  Capital  Securities  shall  not be  deemed  to  materially
adversely affect the holders of the Debentures);

     (e) to evidence and provide for the acceptance of appointment  hereunder by
a successor  Trustee with respect to the  Debentures and to add to or change any
of the  provisions  of this  Indenture  as shall be  necessary to provide for or
facilitate the administration of the trusts hereunder by more than one Trustee;

     (f) to make any change (other than as elsewhere provided in this paragraph)
that does not adversely affect the rights of any  Securityholder in any material
respect; or

     (g) to provide  for the  issuance of and  establish  the form and terms and
conditions  of the  Debentures,  to  establish  the  form of any  certifications
required  to be  furnished  pursuant  to the  terms  of  this  Indenture  or the
Debentures, or to add to the rights of the holders of Debentures.

     The Trustee is hereby  authorized to join with the Company in the execution
of any such supplemental  indenture,  to make any further appropriate agreements
and  stipulations  which may be therein  contained and to accept the conveyance,
transfer and assignment of any property thereunder, but the Trustee shall not be
obligated  to,  but may in its  discretion,  enter  into any  such  supplemental
indenture  which affects the Trustee's  own rights,  duties or immunities  under
this Indenture or otherwise.

     Any supplemental indenture authorized by the provisions of this Section 9.1
may be  executed  by the  Company  and the  Trustee  without  the consent of the
holders of any of the Debentures at the time outstanding, notwithstanding any of
the provisions of Section 9.2.

     Section 9.2. Supplemental Indentures with Consent of Securityholders.  With
the consent  (evidenced  as provided in Section  7.1) of the holders of not less
than a majority in  aggregate  principal  amount of the  Debentures  at the time
outstanding  affected by such supplemental  indenture  (voting as a class),  the
Company, when authorized by a Board Resolution, and the Trustee may from time to
time and at any time enter into an indenture or indentures  supplemental  hereto
for the  purpose  of adding  any  provisions  to or  changing  in any  manner or
eliminating  any of the  provisions  of this  Indenture  or of any  supplemental
indenture  or of  modifying  in any  manner  the  rights of the  holders  of the
Debentures; provided, however, that no such supplemental indenture shall without
the consent of the  holders of each  Debenture  then  outstanding  and  affected
thereby (i) change the fixed maturity of any Debenture,  or reduce the principal
amount thereof or any premium thereon,  or reduce the rate or extend the time of
payment of interest thereon,  or reduce any amount payable on redemption thereof
or make the principal  thereof or any interest or premium thereon payable in any
coin or currency other than that provided in the Debentures, or impair or affect
the right of any  Securityholder to institute suit for payment thereof or impair
the right of repayment,  if any, at the option of the holder, or (ii) reduce the
aforesaid  percentage of Debentures the holders of which are required to consent
to any such  supplemental  indenture;  provided  further,  however,  that if the
Debentures  are held by a trust or a trustee of such  trust,  such  supplemental
indenture  shall not be effective until the holders of a majority in Liquidation
Amount of Trust Securities shall have consented to such supplemental  indenture;
provided  further,  however,  that if the consent of the

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Securityholder  of each  outstanding  Debenture is required,  such  supplemental
indenture shall not be effective until each holder of the Trust Securities shall
have consented to such supplemental indenture.

     Upon  the  request  of  the  Company  accompanied  by  a  Board  Resolution
authorizing  the  execution  of any such  supplemental  indenture,  and upon the
filing  with the  Trustee  of  evidence  of the  consent of  Securityholders  as
aforesaid,  the  Trustee  shall join with the Company in the  execution  of such
supplemental  indenture unless such supplemental indenture affects the Trustee's
own rights,  duties or immunities  under this  Indenture or otherwise,  in which
case the Trustee may in its  discretion,  but shall not be  obligated  to, enter
into such supplemental indenture.

     Promptly  after  the  execution  by the  Company  and  the  Trustee  of any
supplemental  indenture pursuant to the provisions of this Section,  the Trustee
shall transmit by mail, first class postage prepaid,  a notice,  prepared by the
Company,  setting  forth in general  terms the  substance  of such  supplemental
indenture,  to the  Securityholders as their names and addresses appear upon the
Debenture  Register.  Any  failure of the  Trustee to mail such  notice,  or any
defect therein,  shall not, however, in any way impair or affect the validity of
any such supplemental indenture.

     It shall not be necessary for the consent of the Securityholders under this
Section  9.2  to  approve  the  particular  form  of any  proposed  supplemental
indenture,  but it  shall  be  sufficient  if such  consent  shall  approve  the
substance thereof.

     Section 9.3. Effect of Supplemental  Indentures.  Upon the execution of any
supplemental  indenture  pursuant  to the  provisions  of this  Article IX, this
Indenture  shall be and be deemed  to be  modified  and  amended  in  accordance
therewith and the respective rights, limitations of rights, obligations,  duties
and immunities under this Indenture of the Trustee,  the Company and the holders
of Debentures shall thereafter be determined,  exercised and enforced  hereunder
subject in all respects to such  modifications  and amendments and all the terms
and conditions of any such  supplemental  indenture shall be and be deemed to be
part of the terms and conditions of this Indenture for any and all purposes.

Section 9.4. Notation on Debentures. Debentures authenticated and delivered
after the execution of any supplemental indenture pursuant to the provisions of
this Article IX may bear a notation as to any matter provided for in such
supplemental indenture. If the Company or the Trustee shall so determine, new
Debentures so modified as to conform, in the opinion of the Board of Directors
of the Company, to any modification of this Indenture contained in any such
supplemental indenture may be prepared and executed by the Company,
authenticated by the Trustee or the Authenticating Agent and delivered in
exchange for the Debentures then outstanding.

     Section  9.5.  Evidence  of  Compliance  of  Supplemental  Indenture  to be
Furnished to Trustee. The Trustee, subject to the provisions of Sections 6.1 and
6.2,  shall, in addition to the documents  required by Section 14.6,  receive an
Officers'  Certificate and an Opinion of Counsel as conclusive evidence that any
supplemental  indenture  executed pursuant hereto complies with the requirements
of this  Article  IX.  The  Trustee  shall  receive  an  Opinion  of  Counsel as
conclusive  evidence that any supplemental  indenture  executed pursuant to this
Article IX is  authorized  or  permitted  by, and conforms to, the terms of this
Article IX and that it is proper for the Trustee  under the  provisions  of this
Article IX to join in the execution thereof.

                                   ARTICLE X.
                            REDEMPTION OF SECURITIES

     Section  10.1.  Optional  Redemption.  The  Company  shall  have the  right
(subject to the receipt by the Company of prior approval (i) if the Company is a
bank  holding  company,  from  the  Federal  Reserve,  if  then  required  under
applicable  capital guidelines or policies of the Federal Reserve or (ii) if


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the  Company  is a  savings  and loan  holding  company,  from the OTS,  if then
required under applicable  capital  guidelines or policies of the OTS) to redeem
the Debentures, in whole or in part, but in all cases in a principal amount with
integral  multiples  of  $1,000.00,  on any March 17, June 17,  September  17 or
December 17 on or after  September  17,  2008 (the  "Redemption  Date"),  at the
Redemption Price.

     Section 10.2. Special Event Redemption.  If a Special Event shall occur and
be  continuing,  the Company shall have the right (subject to the receipt by the
Company of prior approval (i) if the Company is a bank holding company, from the
Federal  Reserve,  if then  required  under  applicable  capital  guidelines  or
policies  of the  Federal  Reserve or (ii) if the  Company is a savings and loan
holding  company,  from the  OTS,  if then  required  under  applicable  capital
guidelines or policies of the OTS) to redeem the Debentures in whole, but not in
part, at any Interest Payment Date,  within 120 days following the occurrence of
such Special Event (the  "Special  Redemption  Date") at the Special  Redemption
Price. If the Special Event  redemption  occurs prior to September 17, 2008, the
Company  shall appoint a Quotation  Agent,  which  initially  shall be U.S. Bank
National Association or its designee, for the purpose of performing the services
contemplated in, or by reference in, the definition of Special Redemption Price.
Any error in the  calculation of the Special  Redemption  Price by the Quotation
Agent or the Trustee may be  corrected  at any time by notice  delivered  to the
Company and the holders of the Debentures.  Subject to the corrective rights set
forth  above,  all  certificates,   communications,   opinions,  determinations,
calculations,  quotations and decisions given,  expressed,  made or obtained for
the purposes of the  provisions  relating to the payment and  calculation of the
Special  Redemption  Price on the  Debentures  by the  Trustee or the  Quotation
Agent, as the case may be, shall (in the absence of willful  default,  bad faith
or  manifest  error) be final,  conclusive  and  binding  on the  holders of the
Debentures  and the Company,  and no liability  shall attach (except as provided
above) to the Trustee or the Quotation  Agent in connection with the exercise or
non-exercise by any of them of their respective powers, duties and discretion.

     Section 10.3.  Notice of Redemption;  Selection of Debentures.  In case the
Company  shall  desire to exercise  the right to redeem all, or, as the case may
be,  any part of the  Debentures,  it shall  cause to be mailed a notice of such
redemption at least 30 and not more than 60 days prior to the Redemption Date or
the Special  Redemption Date to the holders of Debentures so to be redeemed as a
whole or in part at their last  addresses  as the same  appear on the  Debenture
Register. Such mailing shall be by first class mail. The notice if mailed in the
manner herein provided shall be  conclusively  presumed to have been duly given,
whether or not the holder  receives  such notice.  In any case,  failure to give
such  notice by mail or any defect in the notice to the holder of any  Debenture
designated for redemption as a whole or in part shall not affect the validity of
the proceedings for the redemption of any other Debenture.

     Each such notice of redemption  shall specify the CUSIP number,  if any, of
the  Debentures to be redeemed,  the Redemption  Date or the Special  Redemption
Date, as applicable,  the Redemption Price or the Special  Redemption  Price, as
applicable,  at which  Debentures  are to be  redeemed,  the  place or places of
payment,  that  payment  will be made upon  presentation  and  surrender of such
Debentures,  that interest accrued to the date fixed for redemption will be paid
as specified in said notice, and that on and after said date interest thereon or
on the portions  thereof to be redeemed  will cease to accrue.  If less than all
the  Debentures  are to be redeemed the notice of  redemption  shall specify the
numbers of the  Debentures  to be  redeemed.  In case the  Debentures  are to be
redeemed in part only,  the notice of redemption  shall state the portion of the
principal  amount  thereof to be redeemed  and shall state that on and after the
date fixed for redemption,  upon surrender of such Debenture, a new Debenture or
Debentures in principal  amount equal to the unredeemed  portion thereof will be
issued.

     Prior to 10:00 a.m.  New York City time on the  Redemption  Date or Special
Redemption  Date,  as  applicable,  the Company will deposit with the Trustee or
with one or more paying  agents an amount of money  sufficient  to redeem on the
Redemption  Date  or  the  Special  Redemption  Date,  as  applicable,  all

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<PAGE>

the Debentures so called for redemption at the appropriate  Redemption  Price or
Special Redemption Price.

     If all, or less than all, the  Debentures  are to be redeemed,  the Company
will  give  the  Trustee  notice  not  less  than  45 nor  more  than  60  days,
respectively,  prior to the  Redemption  Date or  Special  Redemption  Date,  as
applicable,  as to the aggregate  principal  amount of Debentures to be redeemed
and the Trustee shall select,  in such manner as in its sole discretion it shall
deem  appropriate  and fair,  the  Debentures  or portions  thereof (in integral
multiples of $1,000.00) to be redeemed.

     Section 10.4.  Payment of Debentures  Called for  Redemption.  If notice of
redemption  has been  given as  provided  in Section  10.3,  the  Debentures  or
portions of  Debentures  with  respect to which such notice has been given shall
become due and payable on the  Redemption  Date or Special  Redemption  Date, as
applicable,  and at the place or places stated in such notice at the  applicable
Redemption Price or Special  Redemption Price and on and after said date (unless
the Company  shall default in the payment of such  Debentures at the  Redemption
Price or Special Redemption Price, as applicable)  interest on the Debentures or
portions  of  Debentures  so called for  redemption  shall  cease to accrue.  On
presentation and surrender of such Debentures at a place of payment specified in
said notice, such Debentures or the specified portions thereof shall be paid and
redeemed by the Company at the applicable Redemption Price or Special Redemption
Price.

     Upon presentation of any Debenture redeemed in part only, the Company shall
execute and the Trustee shall  authenticate  and make  available for delivery to
the holder thereof, at the expense of the Company, a new Debenture or Debentures
of authorized denominations, in principal amount equal to the unredeemed portion
of the Debenture so presented.

                                  ARTICLE XI.
                CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

     Section 11.1.  Company May  Consolidate,  etc., on Certain  Terms.  Nothing
contained in this Indenture or in the Debentures shall prevent any consolidation
or  merger  of the  Company  with or  into  any  other  Person  (whether  or not
affiliated  with the Company) or successive  consolidations  or mergers in which
the Company or its successor or successors shall be a party or parties, or shall
prevent any sale,  conveyance,  transfer or other disposition of the property or
capital stock of the Company or its  successor or successors as an entirety,  or
substantially  as an entirety,  to any other Person  (whether or not  affiliated
with the Company,  or its  successor or  successors)  authorized  to acquire and
operate the same;  provided,  however,  that the Company  hereby  covenants  and
agrees that, upon any such  consolidation,  merger (where the Company is not the
surviving corporation), sale, conveyance, transfer or other disposition, the due
and punctual  payment of the principal of (and premium,  if any) and interest on
all of the Debentures in accordance with their terms,  according to their tenor,
and the due and punctual  performance  and  observance  of all the covenants and
conditions  of this  Indenture to be kept or performed by the Company,  shall be
expressly assumed by supplemental  indenture satisfactory in form to the Trustee
executed  and   delivered   to  the  Trustee  by  the  entity   formed  by  such
consolidation,  or into  which the  Company  shall have been  merged,  or by the
entity which shall have acquired such property or capital stock.

     Section  11.2.  Successor  Entity  to be  Substituted.  In case of any such
consolidation,  merger, sale, conveyance, transfer or other disposition and upon
the assumption by the successor entity, by supplemental indenture,  executed and
delivered to the Trustee and satisfactory in form to the Trustee, of the due and
punctual payment of the principal of and premium, if any, and interest on all of
the Debentures and the due and punctual performance and observance of all of the
covenants and  conditions  of this  Indenture to be performed or observed by the
Company,  such  successor  entity shall  succeed to and be  substituted  for the
Company, with the same effect as if it had been named herein as the Company, and
thereupon the predecessor  entity shall be relieved of any further  liability or
obligation hereunder or upon


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the Debentures.  Such successor entity thereupon may cause to be signed, and may
issue in its own name, any or all of the  Debentures  issuable  hereunder  which
theretofore  shall not have been  signed by the  Company  and  delivered  to the
Trustee  or the  Authenticating  Agent;  and,  upon the order of such  successor
entity  instead of the  Company  and  subject to all the terms,  conditions  and
limitations  in this  Indenture  prescribed,  the Trustee or the  Authenticating
Agent shall  authenticate and deliver any Debentures which previously shall have
been signed and delivered by the officers of the Company,  to the Trustee or the
Authenticating Agent for authentication, and any Debentures which such successor
entity  thereafter  shall cause to be signed and delivered to the Trustee or the
Authenticating Agent for that purpose. All the Debentures so issued shall in all
respects  have the same  legal rank and  benefit  under  this  Indenture  as the
Debentures theretofore or thereafter issued in accordance with the terms of this
Indenture  as though all of such  Debentures  had been issued at the date of the
execution hereof.

     Section  11.3.  Opinion  of Counsel to be Given to  Trustee.  The  Trustee,
subject to the provisions of Sections 6.1 and 6.2, shall receive, in addition to
the  Opinion  of  Counsel  required  by  Section  9.5,  an Opinion of Counsel as
conclusive evidence that any consolidation,  merger, sale, conveyance,  transfer
or other disposition, and any assumption,  permitted or required by the terms of
this Article XI complies with the provisions of this Article XI.

                                  ARTICLE XII.
                     SATISFACTION AND DISCHARGE OF INDENTURE

     Section 12.1. Discharge of Indenture. When

     (a)  the  Company  shall  deliver  to  the  Trustee  for  cancellation  all
          Debentures theretofore  authenticated (other than any Debentures which
          shall have been  destroyed,  lost or stolen and which  shall have been
          replaced  or paid as  provided  in  Section  2.6) and not  theretofore
          canceled, or

     (b)  all the  Debentures  not  theretofore  canceled  or  delivered  to the
          Trustee for cancellation shall have become due and payable,  or are by
          their  terms  to  become  due and  payable  within 1 year or are to be
          called for redemption within 1 year under arrangements satisfactory to
          the  Trustee for the giving of notice of  redemption,  and the Company
          shall  deposit  with the  Trustee,  in trust,  funds,  which  shall be
          immediately  due and  payable,  sufficient  to pay at maturity or upon
          redemption  all of the  Debentures  (other than any  Debentures  which
          shall have been  destroyed,  lost or stolen and which  shall have been
          replaced or paid as provided in Section 2.6) not theretofore  canceled
          or delivered to the Trustee for cancellation,  including principal and
          premium,  if any,  and  interest  due or to become due to such date of
          maturity  or  redemption  date,  as the  case may be,  but  excluding,
          however, the amount of any moneys for the payment of principal of, and
          premium,  if any, or interest on the Debentures (1) theretofore repaid
          to the Company in accordance  with the  provisions of Section 12.4, or
          (2) paid to any state or to the  District of Columbia  pursuant to its
          unclaimed property or similar laws,

and if in the case of either clause (a) or clause (b) the Company shall also pay
or cause to be paid all other sums payable  hereunder by the Company,  then this
Indenture  shall  cease to be of further  effect  except for the  provisions  of
Sections  2.5,  2.6,  2.8,  3.1,  3.2,  3.4, 6.6, 6.8, 6.9 and 12.4 hereof shall
survive until such Debentures shall mature and be paid. Thereafter, Sections 6.6
and 12.4 shall survive, and the Trustee, on demand of the Company accompanied by
an  Officers'  Certificate  and an Opinion of  Counsel,  each  stating  that all
conditions  precedent  herein  provided  for  relating to the  satisfaction  and
discharge of this Indenture have been complied with, and at the cost and expense
of the Company, shall execute proper instruments  acknowledging  satisfaction of
and discharging this Indenture.  The Company agrees to reimburse the

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Trustee for any costs or expenses thereafter reasonably and properly incurred by
the Trustee in connection with this Indenture or the Debentures.

     Section 12.2.  Deposited Moneys to be Held in Trust by Trustee.  Subject to
the provisions of Section 12.4, all moneys  deposited with the Trustee  pursuant
to Section  12.1 shall be held in trust in a  non-interest  bearing  account and
applied  by it to the  payment,  either  directly  or through  any paying  agent
(including the Company if acting as its own paying agent), to the holders of the
particular  Debentures  for the payment of which such moneys have been deposited
with the Trustee,  of all sums due and to become due thereon for principal,  and
premium, if any, and interest.

     Section 12.3.  Paying Agent to Repay Moneys Held. Upon the satisfaction and
discharge  of this  Indenture  all moneys  then held by any paying  agent of the
Debentures (other than the Trustee) shall, upon demand of the Company, be repaid
to it or paid to the Trustee,  and thereupon such paying agent shall be released
from all further liability with respect to such moneys.

     Section 12.4. Return of Unclaimed Moneys. Any moneys deposited with or paid
to the Trustee or any paying agent for payment of the principal of, and premium,
if any, or interest on Debentures and not applied but remaining unclaimed by the
holders of  Debentures  for 2 years after the date upon which the  principal of,
and premium,  if any, or interest on such Debentures,  as the case may be, shall
have become due and payable,  shall, subject to applicable  escheatment laws, be
repaid to the Company by the Trustee or such paying agent on written demand; and
the holder of any of the Debentures  shall  thereafter  look only to the Company
for any payment which such holder may be entitled to collect,  and all liability
of the Trustee or such paying agent with respect to such moneys shall  thereupon
cease.

                                 ARTICLE XIII.
                    IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                             OFFICERS AND DIRECTORS

     Section 13.1.  Indenture and Debentures  Solely Corporate  Obligations.  No
recourse for the payment of the principal of or premium,  if any, or interest on
any Debenture,  or for any claim based thereon or otherwise in respect  thereof,
and no  recourse  under or upon any  obligation,  covenant or  agreement  of the
Company  in this  Indenture  or in any  supplemental  indenture,  or in any such
Debenture,  or because of the creation of any indebtedness  represented thereby,
shall  be had  against  any  incorporator,  stockholder,  employee,  officer  or
director,  as such, past,  present or future, of the Company or of any successor
Person of the Company,  either  directly or through the Company or any successor
Person of the Company, whether by virtue of any constitution, statute or rule of
law, or by the  enforcement of any assessment or penalty or otherwise,  it being
expressly  understood  that all such  liability is hereby  expressly  waived and
released as a condition  of, and as a  consideration  for, the execution of this
Indenture and the issue of the Debentures.

                                  ARTICLE XIV.
                            MISCELLANEOUS PROVISIONS

     Section 14.1.  Successors.  All the covenants,  stipulations,  promises and
agreements  of the  Company  in this  Indenture  shall bind its  successors  and
assigns whether so expressed or not.

     Section 14.2.  Official Acts by Successor Entity.  Any act or proceeding by
any provision of this  Indenture  authorized or required to be done or performed
by any board,  committee  or officer  of the  Company  shall and may be done and
performed  with like force and effect by the like board,  committee,  officer or
other  authorized  Person of any  entity  that  shall at the time be the  lawful
successor of the Company.


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     Section  14.3.  Surrender of Company  Powers.  The Company by instrument in
writing  executed  by  authority  of at least 2/3  (two-thirds)  of its Board of
Directors and delivered to the Trustee may surrender any of the powers  reserved
to the Company and thereupon such power so surrendered  shall  terminate both as
to the Company, and as to any permitted successor.

     Section 14.4. Addresses for Notices, etc. Any notice,  consent,  direction,
request,  authorization,  waiver  or  demand  which  by any  provision  of  this
Indenture is required or permitted to be given, made, furnished or served by the
Trustee or by the Securityholders on or to the Company may be given or served in
writing by being deposited  postage prepaid by registered or certified mail in a
post office letter box addressed (until another address is filed by the Company,
with the Trustee for the purpose) to the Company,  1111 Santa Rosa Avenue, Santa
Rosa,  California  95404,  Attention:  James E. Beckwith.  Any notice,  consent,
direction, request, authorization, waiver or demand by any Securityholder or the
Company to or upon the Trustee shall be deemed to have been  sufficiently  given
or made,  for all  purposes,  if given or made in  writing  at the office of the
Trustee,  addressed to the Trustee, 225 Asylum Street, Goodwin Square, Hartford,
Connecticut 06103 Attention: Vice President,  Corporate Trust Services Division,
with a copy to the Trustee, 1 Federal Street - 3rd Floor, Boston,  Massachusetts
02110, Attention:  Paul D. Allen, Corporate Trust Services Division. Any notice,
consent,  direction,  request,  authorization,  waiver  or  demand  on or to any
Securityholder  shall be deemed to have been sufficiently given or made, for all
purposes,  if given or made in writing at the address set forth in the Debenture
Register.

     Section 14.5.  Governing Law. This  Indenture and each  Debenture  shall be
deemed to be a contract made under the law of the State of New York, and for all
purposes  shall be governed by and construed in accordance  with the law of said
State, without regard to conflict of laws principles thereof.

     Section 14.6.  Evidence of Compliance with Conditions  Precedent.  Upon any
application or demand by the Company to the Trustee to take any action under any
of the provisions of this Indenture, the Company shall furnish to the Trustee an
Officers'  Certificate stating that in the opinion of the signers all conditions
precedent,  if any,  provided  for in this  Indenture  relating to the  proposed
action have been  complied  with and an Opinion of Counsel  stating that, in the
opinion of such counsel, all such conditions precedent have been complied with.

     Each certificate or opinion provided for in this Indenture and delivered to
the Trustee with respect to compliance with a condition or covenant provided for
in this  Indenture  shall  include (1) a statement  that the person  making such
certificate  or  opinion  has  read  such  covenant  or  condition;  (2) a brief
statement as to the nature and scope of the  examination or  investigation  upon
which the  statements or opinions  contained in such  certificate or opinion are
based;  (3) a statement  that,  in the opinion of such person,  he has made such
examination  or  investigation  as is  necessary  to enable  him to  express  an
informed  opinion as to  whether  or not such  covenant  or  condition  has been
complied  with;  and (4) a statement as to whether or not in the opinion of such
person, such condition or covenant has been complied with.

     Section 14.7.  Non-Business  Days. In any case where the date of payment of
interest on or principal of the Debentures  will be a day that is not a Business
Day, the payment of such interest on or principal of the Debentures  need not be
made on such date but may be made on the next  succeeding  Business Day,  except
that, if such Business Day is in the next succeeding calendar year, such payment
shall be made on the immediately  preceding  Business Day, in each case with the
same  force  and  effect  as if made on the  original  date of  payment,  and no
interest shall accrue for the period from and after such date.

     Section 14.8. Table of Contents,  Headings,  etc. The table of contents and
the titles and headings of the articles and sections of this Indenture have been
inserted for  convenience  of reference

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only,  are not to be  considered  a part  hereof,  and shall in no way modify or
restrict any of the terms or provisions hereof.

     Section 14.9. Execution in Counterparts.  This Indenture may be executed in
any  number  of  counterparts,  each of  which  shall be an  original,  but such
counterparts shall together constitute but one and the same instrument.

     Section  14.10.  Separability.  In case  any one or more of the  provisions
contained in this Indenture or in the Debentures shall for any reason be held to
be invalid, illegal or unenforceable in any respect, such invalidity, illegality
or  unenforceability  shall not affect any other provisions of this Indenture or
of such Debentures, but this Indenture and such Debentures shall be construed as
if such invalid or illegal or  unenforceable  provision had never been contained
herein or therein.

     Section 14.11. Assignment.  The Company will have the right at all times to
assign any of its rights or  obligations  under  this  Indenture  to a direct or
indirect wholly owned Subsidiary of the Company,  provided that, in the event of
any such  assignment,  the Company will remain liable for all such  obligations.
Subject to the  foregoing,  this  Indenture  is  binding  upon and inures to the
benefit of the parties hereto and their respective  successors and assigns. This
Indenture may not otherwise be assigned by the parties hereto.

     Section 14.12.  Acknowledgment  of Rights.  The Company  agrees that,  with
respect to any Debentures held by the Trust or the Institutional  Trustee of the
Trust,  if the  Institutional  Trustee of the Trust  fails to enforce its rights
under  this  Indenture  as the holder of  Debentures  held as the assets of such
Trust  after the  holders of a majority  in  Liquidation  Amount of the  Capital
Securities of such Trust have so directed such  Institutional  Trustee, a holder
of record of such Capital  Securities  may, to the fullest  extent  permitted by
law,  institute legal  proceedings  directly against the Company to enforce such
Institutional  Trustee's rights under this Indenture  without first  instituting
any legal proceedings against such trustee or any other Person.  Notwithstanding
the  foregoing,  if an Event of Default has occurred and is continuing  and such
event is attributable to the failure of the Company to pay interest (or premium,
if any) or principal on the Debentures on the date such interest (or premium, if
any) or  principal is otherwise  payable (or in the case of  redemption,  on the
redemption  date),  the  Company  agrees  that a holder  of  record  of  Capital
Securities of the Trust may directly  institute a proceeding against the Company
for  enforcement  of payment to such  holder  directly of the  principal  of (or
premium,  if any) or interest on the  Debentures  having an aggregate  principal
amount equal to the aggregate  Liquidation  Amount of the Capital  Securities of
such holder on or after the respective due date specified in the Debentures.

                                  ARTICLE XV.
                           SUBORDINATION OF DEBENTURES

     Section 15.1.  Agreement to Subordinate.  The Company covenants and agrees,
and each  holder  of  Debentures  by such  Securityholder's  acceptance  thereof
likewise  covenants and agrees,  that all Debentures  shall be issued subject to
the provisions of this Article XV; and each holder of a Debenture,  whether upon
original issue or upon transfer or assignment thereof,  accepts and agrees to be
bound by such provisions.

     The payment by the Company of the  principal  of, and premium,  if any, and
interest on all Debentures  shall,  to the extent and in the manner  hereinafter
set forth, be  subordinated  and junior in right of payment to the prior payment
in full of all Senior  Indebtedness of the Company,  whether  outstanding at the
date of this Indenture or thereafter incurred.

     No provision of this Article XV shall prevent the occurrence of any default
or Event of Default hereunder.


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     Section 15.2. Default on Senior  Indebtedness.  In the event and during the
continuation of any default by the Company in the payment of principal, premium,
interest  or any other  payment  due on any Senior  Indebtedness  of the Company
following  any grace  period,  or in the event that the  maturity  of any Senior
Indebtedness of the Company has been  accelerated  because of a default and such
acceleration has not been rescinded or canceled and such Senior Indebtedness has
not been paid in full,  then,  in either case,  no payment  shall be made by the
Company with respect to the principal (including  redemption) of, or premium, if
any, or interest on the Debentures.

     In the event that,  notwithstanding  the  foregoing,  any payment  shall be
received  by the  Trustee  when such  payment  is  prohibited  by the  preceding
paragraph of this Section 15.2, such payment shall,  subject to Section 15.7, be
held in trust for the  benefit of, and shall be paid over or  delivered  to, the
holders of Senior  Indebtedness or their respective  representatives,  or to the
trustee or  trustees  under any  indenture  pursuant to which any of such Senior
Indebtedness may have been issued, as their respective interests may appear, but
only to the  extent  that the  holders  of the  Senior  Indebtedness  (or  their
representative  or  representatives  or a trustee) notify the Trustee in writing
within 90 days of such  payment of the amounts  then due and owing on the Senior
Indebtedness and only the amounts  specified in such notice to the Trustee shall
be paid to the holders of Senior Indebtedness.

     Section 15.3. Liquidation, Dissolution, Bankruptcy. Upon any payment by the
Company  or  distribution  of assets of the  Company  of any kind or  character,
whether in cash,  property or securities,  to creditors upon any  dissolution or
winding-up or liquidation or reorganization of the Company, whether voluntary or
involuntary or in bankruptcy, insolvency, receivership or other proceedings, all
amounts due upon all Senior  Indebtedness  of the Company shall first be paid in
full, or payment  thereof  provided for in money in  accordance  with its terms,
before any  payment is made by the  Company,  on account of the  principal  (and
premium,  if any) or interest on the  Debentures.  Upon any such  dissolution or
winding-up or  liquidation  or  reorganization,  any payment by the Company,  or
distribution of assets of the Company of any kind or character, whether in cash,
property or  securities,  to which the  Securityholders  or the Trustee would be
entitled to receive from the Company,  except for the provisions of this Article
XV, shall be paid by the Company,  or by any  receiver,  trustee in  bankruptcy,
liquidating trustee,  agent or other Person making such payment or distribution,
or by the  Securityholders or by the Trustee under this Indenture if received by
them or it,  directly  to the holders of Senior  Indebtedness  (pro rata to such
holders on the basis of the respective  amounts of Senior  Indebtedness  held by
such  holders,  as  calculated  by  the  Company)  or  their  representative  or
representatives,  or to the trustee or trustees under any indenture  pursuant to
which any instruments  evidencing such Senior Indebtedness may have been issued,
as their  respective  interests may appear,  to the extent necessary to pay such
Senior  Indebtedness in full, in money or money's worth,  after giving effect to
any  concurrent  payment or  distribution  to or for the  holders of such Senior
Indebtedness,  before any payment or distribution is made to the Securityholders
or to the Trustee.

     In  the  event  that,   notwithstanding  the  foregoing,   any  payment  or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities,  prohibited by the  foregoing,  shall be received by the
Trustee before all Senior Indebtedness is paid in full, or provision is made for
such payment in money in accordance with its terms, such payment or distribution
shall be held in trust for the benefit of and shall be paid over or delivered to
the   holders  of  such  Senior   Indebtedness   or  their   representative   or
representatives,  or to the trustee or trustees under any indenture  pursuant to
which any instruments  evidencing such Senior Indebtedness may have been issued,
as their  respective  interests may appear,  as  calculated by the Company,  for
application to the payment of all Senior  Indebtedness,  remaining unpaid to the
extent necessary to pay such Senior  Indebtedness in full in money in accordance
with its terms, after giving effect to any concurrent payment or distribution to
or for the benefit of the holders of such Senior Indebtedness.


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     For purposes of this Article XV, the words "cash,  property or  securities"
shall not be deemed to include  shares of stock of the Company as reorganized or
readjusted,  or securities of the Company or any other corporation  provided for
by  a  plan  of  reorganization  or  readjustment,   the  payment  of  which  is
subordinated  at least to the extent provided in this Article XV with respect to
the Debentures to the payment of all Senior  Indebtedness,  that may at the time
be outstanding, provided that (i) such Senior Indebtedness is assumed by the new
corporation, if any, resulting from any such reorganization or readjustment, and
(ii) the rights of the holders of such Senior  Indebtedness are not, without the
consent of such holders,  altered by such  reorganization  or readjustment.  The
consolidation  of the Company with,  or the merger of the Company into,  another
corporation  or the  liquidation  or  dissolution  of the Company  following the
conveyance or transfer of its property as an entirety,  or  substantially  as an
entirety,  to another  corporation upon the terms and conditions provided for in
Article  XI of this  Indenture  shall not be deemed a  dissolution,  winding-up,
liquidation  or  reorganization  for the  purposes of this Section if such other
corporation  shall,  as a part  of such  consolidation,  merger,  conveyance  or
transfer,  comply with the  conditions  stated in Article XI of this  Indenture.
Nothing in Section 15.2 or in this Section shall apply to claims of, or payments
to, the Trustee under or pursuant to Section 6.6 of this Indenture.

     Section  15.4.  Subrogation.  Subject to the  payment in full of all Senior
Indebtedness,  the  Securityholders  shall be  subrogated  to the  rights of the
holders of such Senior  Indebtedness  to receive  payments or  distributions  of
cash,  property  or  securities  of  the  Company,  applicable  to  such  Senior
Indebtedness  until the principal of (and  premium,  if any) and interest on the
Debentures  shall be paid in full.  For the  purposes  of such  subrogation,  no
payments or  distributions  to the holders of such  Senior  Indebtedness  of any
cash,  property or securities to which the  Securityholders or the Trustee would
be entitled  except for the  provisions  of this Article XV, and no payment over
pursuant  to the  provisions  of this  Article  XV to or for the  benefit of the
holders of such Senior Indebtedness by Securityholders or the Trustee, shall, as
between the Company,  its creditors other than holders of Senior Indebtedness of
the  Company,  and the  holders of the  Debentures  be deemed to be a payment or
distribution by the Company to or on account of such Senior Indebtedness.  It is
understood  that the  provisions of this Article XV are and are intended  solely
for  the  purposes  of  defining  the  relative  rights  of the  holders  of the
Securities, on the one hand, and the holders of such Senior Indebtedness, on the
other hand.

     Nothing  contained in this Article XV or elsewhere in this  Indenture or in
the  Debentures  is intended to or shall  impair,  as between the  Company,  its
creditors other than the holders of Senior Indebtedness,  and the holders of the
Debentures,  the obligation of the Company, which is absolute and unconditional,
to pay to the holders of the Debentures  the principal of (and premium,  if any)
and interest on the Debentures as and when the same shall become due and payable
in accordance  with their terms,  or is intended to or shall affect the relative
rights of the holders of the Debentures and creditors of the Company, other than
the holders of Senior Indebtedness, nor shall anything herein or therein prevent
the  Trustee  or the  holder  of any  Debenture  from  exercising  all  remedies
otherwise permitted by applicable law upon default under this Indenture, subject
to the  rights,  if any,  under this  Article XV of the  holders of such  Senior
Indebtedness in respect of cash, property or securities of the Company, received
upon the exercise of any such remedy.

     Upon any payment or  distribution  of assets of the Company  referred to in
this Article XV, the Trustee,  subject to the  provisions  of Article VI of this
Indenture,  and the Securityholders  shall be entitled to conclusively rely upon
any order or decree made by any court of  competent  jurisdiction  in which such
dissolution,  winding-up, liquidation or reorganization proceedings are pending,
or a certificate of the receiver,  trustee in bankruptcy,  liquidation  trustee,
agent or other  Person  making such  payment or  distribution,  delivered to the
Trustee or to the Securityholders,  for the purposes of ascertaining the Persons
entitled to participate in such distribution, the holders of Senior Indebtedness
and other  indebtedness of the Company,  the amount thereof or payable  thereon,
the amount or amounts paid or distributed  thereon and all other facts pertinent
thereto or to this Article XV.



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<PAGE>

     Section 15.5. Trustee to Effectuate  Subordination.  Each Securityholder by
such  Securityholder's  acceptance thereof authorizes and directs the Trustee on
such  Securityholder's  behalf  to  take  such  action  as may be  necessary  or
appropriate  to  effectuate  the  subordination  provided in this Article XV and
appoints the Trustee such Securityholder's attorney-in-fact for any and all such
purposes.

     Section 15.6. Notice by the Company.  The Company shall give prompt written
notice to a Responsible  Officer of the Trustee at the  Principal  Office of the
Trustee of any fact known to the Company  that would  prohibit the making of any
payment of monies to or by the Trustee in respect of the Debentures  pursuant to
the  provisions  of this  Article XV.  Notwithstanding  the  provisions  of this
Article XV or any other  provision of this  Indenture,  the Trustee shall not be
charged  with  knowledge of the  existence of any facts that would  prohibit the
making  of  any  payment  of  monies  to or by the  Trustee  in  respect  of the
Debentures  pursuant to the  provisions  of this Article XV,  unless and until a
Responsible  Officer of the Trustee at the Principal Office of the Trustee shall
have received  written notice thereof from the Company or a holder or holders of
Senior Indebtedness or from any trustee therefor;  and before the receipt of any
such written  notice,  the Trustee,  subject to the  provisions of Article VI of
this  Indenture,  shall be entitled in all respects to assume that no such facts
exist; provided, however, that if the Trustee shall not have received the notice
provided  for in this  Section at least 2  Business  Days prior to the date upon
which  by the  terms  hereof  any  money  may  become  payable  for any  purpose
(including,  without limitation, the payment of the principal of (or premium, if
any) or interest on any  Debenture),  then,  anything  herein  contained  to the
contrary  notwithstanding,  the Trustee  shall have full power and  authority to
receive  such  money and to apply the same to the  purposes  for which they were
received,  and shall not be affected by any notice to the  contrary  that may be
received by it within 2 Business Days prior to such date.

     The Trustee,  subject to the  provisions  of Article VI of this  Indenture,
shall be entitled to conclusively rely on the delivery to it of a written notice
by a Person  representing  himself to be a holder of Senior  Indebtedness  (or a
trustee or  representative  on behalf of such  holder),  to establish  that such
notice has been given by a holder of such  Senior  Indebtedness  or a trustee or
representative  on behalf of any such holder or  holders.  In the event that the
Trustee  determines in good faith that further evidence is required with respect
to  the  right  of any  Person  as a  holder  of  such  Senior  Indebtedness  to
participate  in any payment or  distribution  pursuant  to this  Article XV, the
Trustee  may  request  such  Person  to  furnish   evidence  to  the  reasonable
satisfaction of the Trustee as to the amount of such Senior Indebtedness held by
such Person,  the extent to which such Person is entitled to participate in such
payment or  distribution  and any other  facts  pertinent  to the rights of such
Person  under this  Article  XV, and, if such  evidence  is not  furnished,  the
Trustee may defer any payment to such Person pending  judicial  determination as
to the right of such Person to receive such payment.

     Section 15.7. Rights of the Trustee;  Holders of Senior  Indebtedness.  The
Trustee in its individual capacity shall be entitled to all the rights set forth
in this Article XV in respect of any Senior Indebtedness at any time held by it,
to the same extent as any other  holder of Senior  Indebtedness,  and nothing in
this Indenture shall deprive the Trustee of any of its rights as such holder.

     With respect to the holders of Senior Indebtedness,  the Trustee undertakes
to perform or to  observe  only such of its  covenants  and  obligations  as are
specifically  set  forth  in  this  Article  XV,  and no  implied  covenants  or
obligations  with  respect to the holders of such Senior  Indebtedness  shall be
read into this Indenture against the Trustee. The Trustee shall not be deemed to
owe any fiduciary duty to the holders of such Senior  Indebtedness  and, subject
to the  provisions  of Article VI of this  Indenture,  the Trustee  shall not be
liable to any holder of such Senior Indebtedness if it shall pay over or deliver
to Securityholders, the Company or any other Person money or assets to which any
holder of such Senior  Indebtedness  shall be entitled by virtue of this Article
XV or otherwise.



                                       48
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

     Nothing in this  Article XV shall apply to claims of, or  payments  to, the
Trustee under or pursuant to Section 6.6.

     Section 15.8. Subordination May Not Be Impaired. No right of any present or
future  holder of any Senior  Indebtedness  to enforce  subordination  as herein
provided  shall at any time in any way be  prejudiced  or impaired by any act or
failure to act on the part of the  Company,  or by any act or failure to act, in
good faith, by any such holder, or by any noncompliance by the Company, with the
terms,  provisions and covenants of this Indenture,  regardless of any knowledge
thereof that any such holder may have or otherwise be charged with.

     Without in any way limiting the generality of the foregoing paragraph,  the
holders of Senior  Indebtedness may, at any time and from time to time,  without
the  consent  of or  notice  to  the  Trustee  or the  Securityholders,  without
incurring  responsibility  to  the  Securityholders  and  without  impairing  or
releasing  the  subordination  provided  in this  Article XV or the  obligations
hereunder  of the  holders  of the  Debentures  to the  holders  of such  Senior
Indebtedness,  do any one or more of the following: (i) change the manner, place
or terms of payment or extend  the time of payment  of, or renew or alter,  such
Senior Indebtedness,  or otherwise amend or supplement in any manner such Senior
Indebtedness or any instrument  evidencing the same or any agreement under which
such  Senior  Indebtedness  is  outstanding;  (ii)  sell,  exchange,  release or
otherwise deal with any property pledged,  mortgaged or otherwise  securing such
Senior  Indebtedness;  (iii)  release  any  Person  liable in any manner for the
collection  of such  Senior  Indebtedness;  and (iv)  exercise  or refrain  from
exercising any rights against the Company, and any other Person.

                     Signatures appear on the following page








                                       49
1034360.1
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<PAGE>


     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Indenture to be
duly executed by their respective officers thereunto duly authorized,  as of the
day and year first above written.

                             REDWOOD EMPIRE BANCORP


                             By  /s/ James E. Beckwith
                                 -----------------------------
                                 Name: James E. Beckwith
                                 Title: EVP & COO


                             U.S. BANK NATIONAL ASSOCIATION, as Trustee


                             By  /s/ Gerald R. Wheeler
                                 -----------------------------
                                 Name: Gerald R. Wheeler
                                 Title: Vice President







                                       50
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>




                                    EXHIBIT A

  FORM OF FIXED/FLOATING RATE JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURE

                           [FORM OF FACE OF SECURITY]

     THIS SECURITY IS NOT A SAVINGS  ACCOUNT OR DEPOSIT AND IT IS NOT INSURED BY
THE  UNITED  STATES OR ANY AGENCY OR FUND OF THE UNITED  STATES,  INCLUDING  THE
FEDERAL DEPOSIT INSURANCE CORPORATION.

     THIS SECURITY HAS NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "SECURITIES  ACT"),  ANY  STATE  SECURITIES  LAWS  OR  ANY  OTHER
APPLICABLE   SECURITIES   LAW.   NEITHER  THIS  SECURITY  NOR  ANY  INTEREST  OR
PARTICIPATION  HEREIN MAY BE REOFFERED,  SOLD, ASSIGNED,  TRANSFERRED,  PLEDGED,
ENCUMBERED  OR  OTHERWISE  DISPOSED  OF IN THE ABSENCE OF SUCH  REGISTRATION  OR
UNLESS SUCH  TRANSACTION  IS EXEMPT  FROM,  OR NOT SUBJECT TO, THE  REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND ANY APPLICABLE STATE SECURITIES LAWS. THE
HOLDER OF THIS  SECURITY  BY ITS  ACCEPTANCE  HEREOF  AGREES  TO OFFER,  SELL OR
OTHERWISE  TRANSFER  THIS  SECURITY  ONLY (A) TO THE COMPANY,  (B) PURSUANT TO A
REGISTRATION  STATEMENT  THAT HAS BEEN DECLARED  EFFECTIVE  UNDER THE SECURITIES
ACT,  (C) TO A  PERSON  WHOM  THE  SELLER  REASONABLY  BELIEVES  IS A  QUALIFIED
INSTITUTIONAL  BUYER IN A TRANSACTION  MEETING THE  REQUIREMENTS OF RULE 144A SO
LONG AS THIS SECURITY IS ELIGIBLE FOR RESALE PURSUANT TO RULE 144A IN ACCORDANCE
WITH  RULE  144A,  (D)  TO A  NON-U.S.  PERSON  IN AN  OFFSHORE  TRANSACTION  IN
ACCORDANCE  WITH RULE 903 OR RULE 904 (AS  APPLICABLE) OF REGULATION S UNDER THE
SECURITIES ACT, (E) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING
OF SUBPARAGRAPH  (A) OF RULE 501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THIS
SECURITY  FOR  ITS OWN  ACCOUNT,  OR FOR THE  ACCOUNT  OF SUCH AN  INSTITUTIONAL
ACCREDITED  INVESTOR,  FOR  INVESTMENT  PURPOSES  AND NOT WITH A VIEW TO, OR FOR
OFFER  OR  SALE  IN  CONNECTION  WITH,  ANY  DISTRIBUTION  IN  VIOLATION  OF THE
SECURITIES  ACT,  OR (F)  PURSUANT  TO ANY OTHER  AVAILABLE  EXEMPTION  FROM THE
REGISTRATION  REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY'S RIGHT
PRIOR TO ANY SUCH OFFER,  SALE OR TRANSFER TO REQUIRE THE DELIVERY OF AN OPINION
OF  COUNSEL,  CERTIFICATION  AND/OR  OTHER  INFORMATION  SATISFACTORY  TO  IT IN
ACCORDANCE WITH THE INDENTURE, A COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY.

     THE  HOLDER  OF  THIS  SECURITY  BY  ITS  ACCEPTANCE  HEREOF  ALSO  AGREES,
REPRESENTS  AND  WARRANTS  THAT  IT  IS  NOT  AN  EMPLOYEE  BENEFIT,  INDIVIDUAL
RETIREMENT  ACCOUNT  OR  OTHER  PLAN OR  ARRANGEMENT  SUBJECT  TO TITLE I OF THE
EMPLOYEE  RETIREMENT  INCOME  SECURITY  ACT OF 1974,  AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE") (EACH
A "PLAN"),  OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE "PLAN ASSETS" BY REASON
OF ANY PLAN'S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING "PLAN ASSETS" OF
ANY PLAN MAY ACQUIRE OR HOLD THE SECURITIES OR ANY INTEREST THEREIN, UNLESS SUCH
PURCHASER  OR HOLDER IS  ELIGIBLE  FOR  EXEMPTIVE  RELIEF  AVAILABLE  UNDER U.S.
DEPARTMENT OF LABOR PROHIBITED  TRANSACTION CLASS EXEMPTION 96-23, 95-60, 91-38,
90-1 OR 84-14 OR ANOTHER  APPLICABLE  EXEMPTION  OR ITS  PURCHASE AND HOLDING OF
THIS  SECURITY IS NOT  PROHIBITED BY


                                       A-1
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<PAGE>

SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE WITH  RESPECT TO SUCH  PURCHASE
OR HOLDING.  ANY PURCHASER OR HOLDER OF THE  SECURITIES OR ANY INTEREST  THEREIN
WILL BE DEEMED TO HAVE  REPRESENTED  BY ITS  PURCHASE  AND HOLDING  THEREOF THAT
EITHER (i) IT IS NOT AN EMPLOYEE BENEFIT PLAN WITHIN THE MEANING OF SECTION 3(3)
OF ERISA,  OR A PLAN TO WHICH SECTION 4975 OF THE CODE IS APPLICABLE,  A TRUSTEE
OR OTHER PERSON  ACTING ON BEHALF OF AN EMPLOYEE  BENEFIT  PLAN OR PLAN,  OR ANY
OTHER PERSON OR ENTITY USING THE ASSETS OF ANY EMPLOYEE  BENEFIT PLAN OR PLAN TO
FINANCE SUCH  PURCHASE,  OR (ii) SUCH  PURCHASE  WILL NOT RESULT IN A PROHIBITED
TRANSACTION  UNDER  SECTION  406 OF ERISA OR SECTION  4975 OF THE CODE FOR WHICH
THERE IS NO APPLICABLE STATUTORY OR ADMINISTRATIVE EXEMPTION.

     THIS SECURITY WILL BE ISSUED AND MAY BE  TRANSFERRED  ONLY IN BLOCKS HAVING
AN AGGREGATE  PRINCIPAL  AMOUNT OF NOT LESS THAN  $100,000.00  AND  MULTIPLES OF
$1,000.00 IN EXCESS THEREOF.  ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A BLOCK
HAVING AN AGGREGATE PRINCIPAL AMOUNT OF LESS THAN $100,000.00 SHALL BE DEEMED TO
BE VOID AND OF NO LEGAL EFFECT WHATSOEVER.

     THE HOLDER OF THIS  SECURITY  AGREES THAT IT WILL COMPLY WITH THE FOREGOING
RESTRICTIONS.

     IN CONNECTION  WITH ANY TRANSFER,  THE HOLDER WILL DELIVER TO THE REGISTRAR
AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS MAY BE REQUIRED BY
THE  INDENTURE  TO  CONFIRM  THAT  THE  TRANSFER  COMPLIES  WITH  THE  FOREGOING
RESTRICTIONS.

      Fixed/Floating Rate Junior Subordinated Deferrable Interest Debenture

                                       of

                             Redwood Empire Bancorp

                                  July 22, 2003

     Redwood Empire Bancorp, a California  corporation (the "Company" which term
includes any successor Person under the Indenture  hereinafter referred to), for
value  received  promises to pay to U.S. Bank National  Association,  not in its
individual  capacity but solely as Institutional  Trustee for Redwood  Statutory
Trust II (the "Holder") or registered assigns,  the principal sum of ten million
three hundred ten thousand dollars  ($10,310,000.00)  on September 17, 2033, and
to pay  interest  on said  principal  sum from July 22,  2003,  or from the most
recent  interest  payment date (each such date, an "Interest  Payment  Date") to
which  interest  has been  paid or duly  provided  for,  quarterly  (subject  to
deferral as set forth herein) in arrears on March 17, June 17,  September 17 and
December 17 of each year  commencing  on December  17,  2003,  at an annual rate
equal to 6.35%  beginning on (and  including) the date of original  issuance and
ending on (but  excluding)  September  17,  2008 and at an annual  rate for each
successive  Distribution Period beginning on (and including) September 17, 2008,
and each  succeeding  Interest  Payment Date, and ending on (but  excluding) the
next succeeding  Interest  Payment Date,  equal to 3-Month LIBOR,  determined as
described below, plus 3.10% (the "Coupon Rate"), applied to the principal amount
hereof,  until  the  principal  hereof  is  paid or  duly  provided  for or made
available for payment, and on any overdue principal and (without duplication and
to the extent that payment of such interest is enforceable under applicable law)
on any overdue  installment of interest (including  Additional  Interest) at the
Interest Rate in effect for each applicable period,  compounded quarterly,  from
the  dates  such  amounts  are due  until  they are paid or made  available  for
payment.  The  amount  of  interest  payable


                                       A-2
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

(i) for any  Distribution  Period  commencing  on or after the date of  original
issuance  but  before  September  17,  2008 will be  computed  on the basis of a
360-day  year of twelve  30-day  months,  and (ii) for the  Distribution  Period
commencing  on or after  September  17,  2008 and each  succeeding  Distribution
Period  will be  computed  on the  basis  of the  actual  number  of days in the
Distribution  Period  concerned  divided  by 360.  In the event that any date on
which  interest  is payable on this  Debenture  is not a  Business  Day,  then a
payment of the interest payable on such date will be made on the next succeeding
day which is a  Business  Day (and  without  any  interest  or other  payment in
respect of any such  delay),  except that,  if such  Business Day is in the next
succeeding  calendar  year,  such  payment  shall  be  made  on the  immediately
preceding  Business  Day, in each case with the same force and effect as if made
on the date the payment was  originally  payable.  The interest  installment  so
payable,  and punctually paid or duly provided for, on any Interest Payment Date
will,  as  provided in the  Indenture,  be paid to the Person in whose name this
Debenture (or one or more Predecessor  Securities) is registered at the close of
business on the regular record date for such interest  installment,  which shall
be fifteen  days prior to the day on which the  relevant  Interest  Payment Date
occurs.  Any such interest  installment  not so punctually paid or duly provided
for shall  forthwith  cease to be payable to the Holder on such  regular  record
date and may be paid to the Person in whose name this  Debenture (or one or more
Predecessor  Securities)  is  registered  at the close of  business on a special
record date.

     "3-Month LIBOR" as used herein, means the London interbank offered interest
rate for  three-month  U.S.  dollar  deposits  determined  by the Trustee in the
following order of priority:  (i) the rate (expressed as a percentage per annum)
for U.S. dollar deposits having a three-month  maturity that appears on Telerate
Page 3750 as of 11:00  a.m.  (London  time) on the  related  Determination  Date
("Telerate  Page 3750"  means the display  designated  as "Page 3750" on the Dow
Jones  Telerate  Service  or such other  page as may  replace  Page 3750 on that
service or such other  service or  services as may be  nominated  by the British
Bankers'  Association  as the  information  vendor for the purpose of displaying
London  interbank  offered rates for U.S.  dollar  deposits);  (ii) if such rate
cannot be identified on the related Determination Date, the Trustee will request
the  principal  London  offices of four  leading  banks in the London  interbank
market to provide such banks' offered  quotations  (expressed as percentages per
annum) to prime banks in the London  interbank  market for U.S.  dollar deposits
having  a  three-month   maturity  as  of  11:00  a.m.  (London  time)  on  such
Determination Date. If at least two quotations are provided,  3-Month LIBOR will
be the  arithmetic  mean of such  quotations;  (iii)  if  fewer  than  two  such
quotations  are  provided as  requested  in clause (ii) above,  the Trustee will
request four major New York City banks to provide such banks' offered quotations
(expressed as percentages per annum) to leading European banks for loans in U.S.
dollars as of 11:00 a.m. (London time) on such  Determination  Date. If at least
two such  quotations are provided,  3-Month LIBOR will be the arithmetic mean of
such  quotations;  and (iv) if fewer than two such  quotations  are  provided as
requested  in  clause  (iii)  above,  3-Month  LIBOR  will  be a  3-Month  LIBOR
determined with respect to the Distribution  Period  immediately  preceding such
current  Distribution  Period.  If the rate for U.S.  dollar  deposits  having a
three-month  maturity that  initially  appears on Telerate Page 3750 as of 11:00
a.m.  (London  time) on the  related  Determination  Date is  superseded  on the
Telerate  Page 3750 by a  corrected  rate by 12:00  noon  (London  time) on such
Determination  Date, then the corrected rate as so substituted on the applicable
page will be the applicable 3-Month LIBOR for such  Determination  Date. As used
herein,  "Determination  Date"  means the date that is two London  Banking  Days
(i.e.,  a  business  day in which  dealings  in  deposits  in U.S.  dollars  are
transacted in the London  interbank  market)  preceding the  commencement of the
relevant Distribution Period.

     The  Interest  Rate for any  Distribution  Period will at no time be higher
than the maximum rate then permitted by New York law as the same may be modified
by United States law.

     All percentages  resulting from any  calculations on the Debentures will be
rounded,  if necessary,  to the nearest one  hundred-thousandth  of a percentage
point,  with five  one-millionths  of a percentage


                                       A-3
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

point rounded upward (e.g.,  9.876545% (or .09876545)  being rounded to 9.87655%
(or .0987655), and all dollar amounts used in or resulting from such calculation
will be rounded to the nearest cent (with one-half cent being rounded upward)).

     The  principal  of and interest on this  Debenture  shall be payable at the
office or agency of the Trustee (or other paying agent appointed by the Company)
maintained  for that  purpose in any coin or  currency  of the United  States of
America  that at the time of payment is legal  tender for  payment of public and
private debts; provided,  however, that payment of interest may be made by check
mailed to the registered holder at such address as shall appear in the Debenture
Register if a request for a wire  transfer by such holder has not been  received
by the Company or by wire transfer to an account appropriately designated by the
holder  hereof.  Notwithstanding  the  foregoing,  so long as the holder of this
Debenture  is the  Institutional  Trustee,  the payment of the  principal of and
interest on this Debenture will be made in immediately  available  funds at such
place and to such account as may be designated by the Trustee.

     So long as no Event of Default has occurred and is continuing,  the Company
shall  have the  right,  from  time to time,  and  without  causing  an Event of
Default,  to defer  payments of  interest on the  Debentures  by  extending  the
interest  payment  period  on the  Debentures  at any time and from time to time
during the term of the Debentures,  for up to 20 consecutive  quarterly  periods
(each such extended  interest  payment period,  an "Extension  Period"),  during
which Extension Period no interest (including  Additional Interest) shall be due
and  payable  (except  any  Additional  Sums  that may be due and  payable).  No
Extension Period may end on a date other than an Interest  Payment Date.  During
an Extension  Period,  interest will continue to accrue on the  Debentures,  and
interest  on such  accrued  interest  will accrue at an annual rate equal to the
Interest Rate in effect for such Extension Period, compounded quarterly from the
date such interest would have been payable were it not for the Extension Period,
to the extent permitted by law (such interest  referred to herein as "Additional
Interest").  At the end of any such  Extension  Period the Company shall pay all
interest then accrued and unpaid on the  Debentures  (together  with  Additional
Interest thereon); provided, however, that no Extension Period may extend beyond
the Maturity Date;  provided  further,  however,  that during any such Extension
Period,  the Company  shall not and shall not permit any  Affiliate to engage in
any of the activities or  transactions  described on the reverse side hereof and
in the Indenture.  Prior to the termination of any Extension Period, the Company
may further extend such period, provided that such period together with all such
previous  and  further  consecutive  extensions  thereof  shall  not  exceed  20
consecutive  quarterly  periods,  or extend beyond the Maturity  Date.  Upon the
termination  of any  Extension  Period and upon the  payment of all  accrued and
unpaid  interest  and  Additional  Interest,  the  Company  may  commence  a new
Extension  Period,  subject  to  the  foregoing  requirements.  No  interest  or
Additional Interest shall be due and payable during an Extension Period,  except
at the end thereof,  but each  installment of interest that would otherwise have
been  due and  payable  during  such  Extension  Period  shall  bear  Additional
Interest.  The Company must give the Trustee  notice of its election to begin or
extend an Extension  Period at least 5 Business Days prior to the regular record
date  (as  such  term is  used  in  Section  2.8 of the  Indenture)  immediately
preceding  the  Interest  Payment  Date with  respect to which  interest  on the
Debentures  would have been  payable  except for the election to begin or extend
such Extension Period.

     The indebtedness  evidenced by this Debenture is, to the extent provided in
the Indenture,  subordinate  and junior in right of payment to the prior payment
in full of all Senior Indebtedness,  and this Debenture is issued subject to the
provisions of the Indenture with respect thereto. Each holder of this Debenture,
by accepting the same, (a) agrees to and shall be bound by such provisions,  (b)
authorizes  and  directs the Trustee on his or her behalf to take such action as
may be necessary or appropriate  to acknowledge or effectuate the  subordination
so provided and (c) appoints the Trustee his or her attorney-in-fact for any and
all such purposes.  Each holder hereof, by his or her acceptance hereof,  hereby
waives all notice of the acceptance of the  subordination  provisions  contained
herein and in the Indenture by each


                                       A-4
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

holder of Senior  Indebtedness,  whether now outstanding or hereafter  incurred,
and waives reliance by each such holder upon said provisions.

     This  Debenture  shall not be entitled to any benefit  under the  Indenture
hereinafter referred to, be valid or become obligatory for any purpose until the
certificate of  authentication  hereon shall have been signed by or on behalf of
the Trustee.

     The  provisions of this  Debenture are continued on the reverse side hereof
and such provisions  shall for all purposes have the same effect as though fully
set forth at this place.







                                       A-5
1034360.1
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<PAGE>


     IN WITNESS WHEREOF, the Company has duly executed this certificate.

                                REDWOOD EMPIRE BANCORP


                                 By
                                   -------------------------------------------
                                   Name:
                                   Title:


                          CERTIFICATE OF AUTHENTICATION

     This  is  one  of  the  Debentures  referred  to  in  the  within-mentioned
Indenture.

                                U.S. Bank National Association, as Trustee


                                By:
                                    -----------------------------------------
                                    Authorized Officer


                                       A-6
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<PAGE>


                         [FORM OF REVERSE OF DEBENTURE]

         This Debenture is one of the fixed/floating rate junior subordinated
deferrable interest debentures of the Company, all issued or to be issued under
and pursuant to the Indenture dated as of July 22, 2003 (the "Indenture"), duly
executed and delivered between the Company and the Trustee, to which Indenture
reference is hereby made for a description of the rights, limitations of rights,
obligations, duties and immunities thereunder of the Trustee, the Company and
the holders of the Debentures. The Debentures are limited in aggregate principal
amount as specified in the Indenture.

         Upon the occurrence and continuation of a Special Event prior to
September 17, 2008, the Company shall have the right to redeem the Debentures in
whole, but not in part, at any Interest Payment Date, within 120 days following
the occurrence of such Special Event, at the Special Redemption Price.

         In addition, the Company shall have the right to redeem the Debentures,
in whole or in part, but in all cases in a principal amount with integral
multiples of $1,000.00, on any Interest Payment Date on or after September 17,
2008, at the Redemption Price.

         Prior to 10:00 a.m. New York City time on the Redemption Date or
Special Redemption Date, as applicable, the Company will deposit with the
Trustee or with one or more paying agents an amount of money sufficient to
redeem on the Redemption Date or the Special Redemption Date, as applicable, all
the Debentures so called for redemption at the appropriate Redemption Price or
Special Redemption Price.

         If all, or less than all, the Debentures are to be redeemed, the
Company will give the Trustee notice not less than 45 nor more than 60 days,
respectively, prior to the Redemption Date or Special Redemption Date, as
applicable, as to the aggregate principal amount of Debentures to be redeemed
and the Trustee shall select, in such manner as in its sole discretion it shall
deem appropriate and fair, the Debentures or portions thereof (in integral
multiples of $1,000.00) to be redeemed.

         Notwithstanding the foregoing, any redemption of Debentures by the
Company shall be subject to the receipt of any and all required regulatory
approvals.

         In case an Event of Default shall have occurred and be continuing, upon
demand of the Trustee, the principal of all of the Debentures shall become due
and payable in the manner, with the effect and subject to the conditions
provided in the Indenture.

         The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the holders of not less than a majority in
aggregate principal amount of the Debentures at the time outstanding, to execute
supplemental indentures for the purpose of adding any provisions to or changing
in any manner or eliminating any of the provisions of this Indenture or of any
supplemental indenture or of modifying in any manner the rights of the holders
of the Debentures; provided, however, that no such supplemental indenture shall
without the consent of the holders of each Debenture then outstanding and
affected thereby (i) change the fixed maturity of any Debenture, or reduce the
principal amount thereof or any premium thereon, or reduce the rate or extend
the time of payment of interest thereon, or reduce any amount payable on
redemption thereof or make the principal thereof or any interest or premium
thereon payable in any coin or currency other than that provided in the
Debentures, or impair or affect the right of any Securityholder to institute
suit for payment thereof or impair the right of repayment, if any, at the option
of the holder, or (ii) reduce the aforesaid percentage of Debentures the holders
of which are required to consent to any such supplemental indenture.

         The Indenture also contains provisions permitting the holders of a
majority in aggregate principal amount of the Debentures at the time outstanding
on behalf of the holders of all of the Debentures to


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Redwood Empire Bancorp/Indenture
<PAGE>

waive (or modify any previously granted waiver of) any past default or Event of
Default, and its consequences, except a default (a) in the payment of principal
of, premium, if any, or interest on any of the Debentures, (b) in respect of
covenants or provisions hereof or of the Indenture which cannot be modified or
amended without the consent of the holder of each Debenture affected, or (c) in
respect of the covenants contained in Section 3.9 of the Indenture; provided,
however, that if the Debentures are held by the Trust or a trustee of such
trust, such waiver or modification to such waiver shall not be effective until
the holders of a majority in Liquidation Amount of Trust Securities of the Trust
shall have consented to such waiver or modification to such waiver, provided,
further, that if the consent of the holder of each outstanding Debenture is
required, such waiver shall not be effective until each holder of the Trust
Securities of the Trust shall have consented to such waiver. Upon any such
waiver, the default covered thereby shall be deemed to be cured for all purposes
of the Indenture and the Company, the Trustee and the holders of the Debentures
shall be restored to their former positions and rights hereunder, respectively;
but no such waiver shall extend to any subsequent or other default or Event of
Default or impair any right consequent thereon. Whenever any default or Event of
Default hereunder shall have been waived as permitted by the Indenture, said
default or Event of Default shall for all purposes of the Debentures and the
Indenture be deemed to have been cured and to be not continuing.

         No reference herein to the Indenture and no provision of this Debenture
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of and premium, if any, and
interest, including Additional Interest, on this Debenture at the time and place
and at the rate and in the money herein prescribed.

         The Company has agreed that if Debentures are initially issued to the
Trust or a trustee of such Trust in connection with the issuance of Trust
Securities by the Trust (regardless of whether Debentures continue to be held by
such Trust) and (i) there shall have occurred and be continuing an Event of
Default, (ii) the Company shall be in default with respect to its payment of any
obligations under the Capital Securities Guarantee, or (iii) the Company shall
have given notice of its election to defer payments of interest on the
Debentures by extending the interest payment period as provided herein and such
Extension Period, or any extension thereof, shall be continuing, then the
Company shall not, and shall not allow any Affiliate of the Company to, (x)
declare or pay any dividends or distributions on, or redeem, purchase, acquire,
or make a liquidation payment with respect to, any of the Company's capital
stock or its Affiliates' capital stock (other than payments of dividends or
distributions to the Company) or make any guarantee payments with respect to the
foregoing or (y) make any payment of principal of or interest or premium, if
any, on or repay, repurchase or redeem any debt securities of the Company or any
Affiliate that rank pari passu in all respects with or junior in interest to the
Debentures (other than, with respect to clauses (x) and (y) above, (1)
repurchases, redemptions or other acquisitions of shares of capital stock of the
Company in connection with any employment contract, benefit plan or other
similar arrangement with or for the benefit of one or more employees, officers,
directors or consultants, in connection with a dividend reinvestment or
stockholder stock purchase plan or in connection with the issuance of capital
stock of the Company (or securities convertible into or exercisable for such
capital stock) as consideration in an acquisition transaction entered into prior
to the applicable Extension Period, if any, (2) as a result of any exchange or
conversion of any class or series of the Company's capital stock (or any capital
stock of a subsidiary of the Company) for any class or series of the Company's
capital stock or of any class or series of the Company's indebtedness for any
class or series of the Company's capital stock, (3) the purchase of fractional
interests in shares of the Company's capital stock pursuant to the conversion or
exchange provisions of such capital stock or the security being converted or
exchanged, (4) any declaration of a dividend in connection with any
stockholders' rights plan, or the issuance of rights, stock or other property
under any stockholders' rights plan, or the redemption or repurchase of rights
pursuant thereto, (5) any dividend in the form of stock, warrants, options or
other rights where the dividend stock or the stock issuable upon exercise of
such warrants, options or other rights is the same stock as that on which the
dividend is being paid or ranks pari passu with or junior to such stock and any



                                       A-8
1034360.1
Redwood Empire Bancorp/Indenture
<PAGE>

cash payments in lieu of fractional shares issued in connection therewith, or
(6) payments under the Capital Securities Guarantee).

         The Debentures are issuable only in registered, certificated form
without coupons and in minimum denominations of $100,000.00 and any multiple of
$1,000.00 in excess thereof. As provided in the Indenture and subject to the
transfer restrictions and limitations as may be contained herein and therein
from time to time, this Debenture is transferable by the holder hereof on the
Debenture Register of the Company. Upon due presentment for registration of
transfer of any Debenture at the Principal Office of the Trustee or at any
office or agency of the Company maintained for such purpose as provided in
Section 3.2 of the Indenture, the Company shall execute, the Company or the
Trustee shall register and the Trustee or the Authenticating Agent shall
authenticate and make available for delivery in the name of the transferee or
transferees a new Debenture for a like aggregate principal amount. All
Debentures presented for registration of transfer or for exchange or payment
shall (if so required by the Company or the Trustee or the Authenticating Agent)
be duly endorsed by, or be accompanied by a written instrument or instruments of
transfer in form satisfactory to, the Company and the Trustee or the
Authenticating Agent duly executed by the holder or his attorney duly authorized
in writing. No service charge shall be made for any exchange or registration of
transfer of Debentures, but the Company or the Trustee may require payment of a
sum sufficient to cover any tax, fee or other governmental charge that may be
imposed in connection therewith.

         Prior to due presentment for registration of transfer of any Debenture,
the Company, the Trustee, any Authenticating Agent, any paying agent, any
transfer agent and any Debenture registrar may deem the Person in whose name
such Debenture shall be registered upon the Debenture Register to be, and may
treat him as, the absolute owner of such Debenture (whether or not such
Debenture shall be overdue) for the purpose of receiving payment of or on
account of the principal of, premium, if any, and interest on such Debenture and
for all other purposes; and neither the Company nor the Trustee nor any
Authenticating Agent nor any paying agent nor any transfer agent nor any
Debenture registrar shall be affected by any notice to the contrary. All such
payments so made to any holder for the time being or upon his order shall be
valid, and, to the extent of the sum or sums so paid, effectual to satisfy and
discharge the liability for moneys payable upon any such Debenture.

         No recourse for the payment of the principal of or premium, if any, or
interest on any Debenture, or for any claim based thereon or otherwise in
respect thereof, and no recourse under or upon any obligation, covenant or
agreement of the Company in the Indenture or in any supplemental indenture, or
in any such Debenture, or because of the creation of any indebtedness
represented thereby, shall be had against any incorporator, stockholder,
employee, officer or director, as such, past, present or future, of the Company
or of any successor Person of the Company, either directly or through the
Company or any successor Person of the Company, whether by virtue of any
constitution, statute or rule of law, or by the enforcement of any assessment or
penalty or otherwise, it being expressly understood that all such liability is
hereby expressly waived and released as a condition of, and as a consideration
for, the execution of the Indenture and the issue of the Debentures.

         Capitalized terms used and not defined in this Debenture shall have the
meanings assigned in the Indenture dated as of the date of original issuance of
this Debenture between the Trustee and the Company.

         THE INDENTURE AND THE DEBENTURES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICT OF
LAW PRINCIPLES THEREOF.




                                       A-9
1034360.1
Redwood Empire Bancorp/Indenture