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                                                                    EXHIBIT 10.4
                            2003 EMPLOYMENT AGREEMENT

                      Columbia River Bank - Britt W. Thomas

         This Employment Agreement (the "Agreement") is made and entered into
this 15th day of April, 2003 by and between Columbia River Bank, an Oregon
corporation ("Bank") and Britt W. Thomas ("Employee").

                                    RECITALS

         (1)      Bank is a state-chartered Oregon financial institution, and is
the wholly owned subsidiary of Columbia Bancorp ("Bancorp"). Bancorp's principal
office is at 420 East Third Street, Suite 200, The Dalles, Oregon 97058.

         (2)      Bank desires to employ Employee as an officer of Bank on the
terms and conditions set forth herein.

         Now, therefore, it is agreed:

         1.       RELATIONSHIP AND DUTIES.

         1.1      EMPLOYMENT AND TITLE. Bank shall employ Employee as an officer
of Bank with such title as the President and Chief Executive Officer of the Bank
shall designate. Subject to the terms and conditions hereof, employee shall
perform such duties and exercise such authority as are customarily performed and
exercised by persons holding such office, subject to the general direction of
the President and Chief Executive Officer of the Bank and of the Boards of
Directors of Bancorp and the Bank. Such services and duties shall be exercised
in good faith and in accordance with standards of reasonable business judgment.
As used herein, references to "Bank" shall be deemed to also refer to and
include Bancorp where the context requires.

         1.2      DUTIES; CONFLICTS. Employee shall devote his full time,
attention and efforts to the diligent performance of his duties as an officer of
the Bank. Employee will not accept employment with any other individual,
corporation, partnership, governmental authority or any other entity, or engage
in any other venture for profit which Bancorp, or any subsidiary, parent, sister
or affiliated corporation of Bancorp, considers to be in conflict with their
best interests or to be in competition with their business, or which may
interfere in any way with Employee's performance of his duties hereunder.

         1.3      SERVICE ON OTHER COMPANY BOARDS. Nothing in the Agreement
shall prohibit Employee from serving on the board of directors of any profit or
non-profit corporation not in direct competition with Bancorp or with any
subsidiary, parent, sister or affiliated corporation of Bancorp. In addition,
Employee may own stock in any other corporation whether or not the stock is
publicly traded; provided, that if such corporation

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operates a business in competition with Bancorp Employee may not own more than
five percent (5%) of the outstanding shares of such corporation.

         2.       TERM OF EMPLOYMENT.

         2.1      TWO-YEAR TERM. The term of employment under the Agreement
shall begin on April 15, 2003 and end on April 14, 2005.

         3.       TERMINATION.

         3.1      DEFINITION. As used in the Agreement, "termination" shall mean
the termination of Employee's employment relation with Bank, whether initiated
by Bank or by Employee, and whether for cause or without cause.

         3.2      TERMINATION EVENTS. Notwithstanding any other provisions of
the Agreement, the employment of Employee shall terminate immediately on the
earlier to occur of any of the following:

                  3.2.1    Employee's death;

                  3.2.2    Employee's complete disability. "Complete disability"
as used herein shall mean the inability of Employee, due to illness, accident,
or other physical or mental incapacity, to perform the services required under
the Agreement for an aggregate of ninety (90) days within any period of 180
consecutive days during the term hereof; provided, however, that disability
shall not constitute a basis for discharge for cause;

                  3.2.3    The discharge of Employee by Bank for cause. "Cause"
as used herein shall mean (i) Employee's negligence or misconduct as shall
constitute, as a matter of law, a breach of the covenants and obligations of
Employee hereunder; (ii) failure or refusal of Employee to comply with the
provisions of the Agreement; (iii) Employee's conviction by any duly constituted
court with competent jurisdiction of a crime (other than traffic offenses); (iv)
Employee's malfeasance or incompetence, provided that in applying this criteria
Bank shall not be unreasonable or arbitrary, and provided further that prior to
effecting a dismissal under this Section (iv) Bank shall afford Employee with
fair and reasonable warning and with a fair and reasonable opportunity to cure
any defects in Employee's performance.

         3.3      TERMINATION BY EMPLOYEE. Employee may terminate his employment
with Bank with or without cause by giving thirty (30) days written notice of
termination. "Cause" as used herein shall include Bank's failure or refusal to
comply with the provisions of the Agreement.

         3.4      EFFECT OF TERMINATION. The termination of Employee's
employment shall constitute a tender by Employee of his resignation as an
officer of Bank, and as a member

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of any board of directors or board committees of Bancorp or its affiliates if
Employee is a member thereof at the time of termination.

         3.5      PAYMENT ON TERMINATION. If Employee's employment is terminated
by Employee with or without cause, or by Bank with or without cause, Employee
shall be paid all base salary and benefits accrued under the Agreement as of the
termination date.

         3.6      SEVERANCE PAYMENT. If Employee's employment is terminated by
Employee with cause, or by Bank without cause, Employee shall be paid all base
salary and benefits accrued under the Agreement as of the termination date, and
in addition, shall be entitled to a severance payment equal to the greater of
(i) one month's base salary as of the date of termination multiplied by the
number of full calendar years Employee has been employed by Bank or any
predecessor thereof, or (ii) one month's base salary as of the date of
termination multiplied by twelve (12). For purposes of Section 3.6(i) a period
of continuous full-time employment for six months or more in a calendar year
shall count as a full calendar year. If for any period Employee has been
employed simultaneously by Bank and by one or more of its affiliates, such
period shall count only once in determined the severance payment under Section
3.6(i). The severance payment provided herein shall be paid in full within
thirty (30) days of the date of Employee's termination. Employee shall not be
entitled to such severance payment if Employee's employment is terminated by
Bank with cause, or by Employee without cause, and in either such case Employee
shall only be entitled to receive on termination a payment equal to Employee's
base salary and benefits accrued under the Agreement as of the termination date,
and no other payments.

         3.7      PERFORMANCE BONUS. If Employee's employment is terminated by
Employee with cause, or by Bank without cause, Employee shall be paid, in
addition to the amounts payable under Sections 3.5 and 3.6 of the Agreement: (i)
all nonforfeitable deferred compensation, if any; and (ii) unpaid performance
bonus payments, if any, payable under Section 4.2 of the Agreement, which shall
be declared earned and payable based upon performance up to, and shall be
pro-rated as of, the date of termination. Employee shall not be entitled to such
unpaid performance bonus payments if Employee's employment is terminated by Bank
with cause, or by Employee without cause.

         4.       COMPENSATION.

         4.1      BASE SALARY. For the period beginning April 15, 2003 and
ending April 14, 2004, Employee shall be paid an annual base salary of
$102,000.00, payable in equal bimonthly installments and subject to any
deductions required by law. Base salary for any subsequent years covered by the
Agreement shall be determined by Bank prior to April 15, 2004.

         4.2      PERFORMANCE BONUS. Employee shall be entitled to consideration
for annual performance bonus compensation for each calendar year constituting a
percentage of annual base salary earned from his employment by Bank during such
calendar year.

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Bonus compensation shall be subject to any deductions required by law. The Bank
or Bancorp Board shall timely, and at least once yearly, determine the amount of
and the formulas and methods for establishing such bonus compensation. The
amount of such bonus compensation shall at all times be discretionary, and Bank
may decline to award a performance bonus to Employee in any year.

                  4.2.1    Employee shall be entitled to a pro-rata performance
bonus for less than a full year of performance if Employee's employment is
terminated by Employee with cause, or by the Bank without cause (including
termination following a change of control as described in Section 7.4 of the
Agreement), prior to the date on which Employee would otherwise be entitled to
consideration for Employee's annual performance bonus. In such circumstances,
such pro-rata performance bonus shall be declared earned and payable as of the
date of termination.

         5.       BENEFITS; PURCHASE OF SHARES.

         5.1      ELIGIBILITY FOR GENERAL BENEFITS. Employee shall be eligible
to participate in any plan of Bank or its affiliates relating to stock options,
stock purchases, profit sharing, group life insurance, medical coverage,
education and other retirement or employee benefits that Bank or its affiliates
may adopt for the benefit of employees.

         5.2      CAR ALLOWANCE.  Employee shall receive no car allowance.

         5.3      ADDITIONAL BENEFITS. Employee shall be eligible to participate
in any other benefits which may be or become applicable to Bank's executive
employees of similar rank. In addition, Employee shall be entitled to: (i) a
reasonable expense account for use in connection with Bank business; and (ii)
any other benefits which in Bank's judgment are commensurate with the
responsibilities and functions to be performed by Employee under the Agreement,
including the payment of reasonable expenses for attendance by Employee and
Employee's spouse at annual meetings of the Oregon Bankers Association.

         5.4      SHARE OWNERSHIP. During the term of the Agreement, including
extensions, Employee shall purchase shares of Bancorp Stock, including purchases
through the exercise of stock options, in accordance with the share ownership
policies and requirements established by Bancorp or Bank management in effect
from time to time for employees of comparable rank.

         6.       VACATIONS AND LEAVES.

         6.1      PAID VACATION. During the term of the Agreement, Employee
shall be entitled to annual paid vacation benefits identical to those offered to
employees of Bank holding executive vice president or higher positions. The
timing of vacations shall be scheduled in a reasonable manner by Employee.
Employee shall not be entitled to receive

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any additional compensation from Bank on account of his failure to take a
vacation, and may not accumulate unused vacation time from one calendar year to
the next.

         6.2      LEAVES WITH OR WITHOUT PAY. The Bank Board may grant Employee
a leave or leaves of absence, with or without pay, at such time or times and
upon such terms and conditions as the Board may determine.

         6.3      MANDATORY ABSENCE. In each calendar year Employee shall be
absent from Bank for one period of two consecutive weeks. Such period may
include vacation, leave, sick leave, attendance at seminars or conventions, or
any combination thereof.

         7.       CHANGE OF CONTROL.

         7.1      SURVIVAL OF RIGHTS. Employee's rights on termination of
employment under Section 3 of the Agreement, as well as all other rights of
Employee under the Agreement or applicable law, shall survive a change of
control of Bancorp or Bank whether or not Employee opposed or favored the change
of control.

         7.2      RIGHTS ON CHANGE OF CONTROL. If a change of control of Bancorp
or Bank occurs while the Agreement is in effect, Employee shall have ninety (90)
days following the date such change of control becomes effective to elect to
terminate Employee's employment with cause. If Employee so elects to terminate,
such termination shall constitute a termination by Employee with cause, and
Employee shall receive all payments and benefits due to Employee on termination
by Employee with cause under Section 3 of the Agreement.

         7.3      BASE COMPENSATION. Following a change of control, Bank shall
not reduce Employee's base compensation in effect prior to the effective date of
the change of control for a period of time equal to the greater of (i) twelve
(12) months from the effective date of the change of control; (ii) one (1) month
for each full calendar year Employee has been employed by Bank; or (iii) the
remaining term of the Agreement, including any extensions thereof. For purposes
of this Subsection 7.3, a period of continuous full-time employment for six
months or more in a calendar year shall count as a full calendar year.

         7.4      TERMINATION WITHOUT CAUSE. If following a change of control
Bank terminates Employee's employment within one (1) year of the effective date
of the change of control because of a reduction in force or for any other
reason, other than for cause pursuant to Section 3.3 of the Agreement, such
termination shall constitute a termination by Bank without cause, and Employee
shall receive all payments and benefits due to Employee on termination under
Sections 3.5 and 3.6 of the Agreement, plus: (i) all nonforfeitable deferred
compensation, if any; and (ii) unpaid performance bonus payments, if any,
payable under Section 4.2 of the Agreement, which shall be declared earned and
payable based upon performance up to, and shall be pro-rated as of, the date of
termination.

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         7.5      OPTIONS AND STOCK. If Employee is a participant in a
restricted stock plan or share option plan, and such plan is terminated
involuntarily as a result of the change of control, all stock and options shall
be declared fully vested and shall be paid, awarded or otherwise distributed.
With respect to any unexercised options under any stock option plan, such
options may be exercised within the period provided in such plan. Effective as
of the date of the change of control, any holding period established for stock
paid as bonus or other compensation shall be deemed terminated, except as
otherwise provided by law.

         7.6      DEFINITION. As used in this Section, "control" shall mean the
acquisition during Employee's employment of twenty-five percent (25%) or more of
the voting securities of Bancorp or Bank by any person, or persons acting as a
group within the meaning of Section 13(d) of the Securities Exchange Act of
1934, or to such acquisition of a percentage between ten percent (10%) and
twenty-five percent (25%) if the Board or the Comptroller of the Currency, the
FDIC, or the Federal Reserve Bank have made a determination that such
acquisition constitutes or will constitute control of Bancorp or Bank. The term
"person" refers to an individual, corporation, bank, bank holding company, or
other entity, but excludes any Employee Stock Ownership Plan established for the
benefit of employees of Bancorp or any of its subsidiaries or other affiliates.

         8.       POST TERMINATION COVENANTS.

         8.1      NON-COMPETE COVENANTS. If Employee terminates his employment
without cause, or if Employee's employment is terminated by Bank for cause, then
for one year from the date of such termination Employee will not, without the
prior written consent of Bank:

                  8.1.1    Undertake full or part-time work, either as an
employee or as a consultant, for another financial institution if such work is
to be done, in whole or in part, in or from an office or other work site in
Yamhill, Wasco, Hood River, Jefferson, Deschutes, Sherman or Gilliam Counties,
Oregon, in Klickitat County, Washington, or in any other county in Oregon or
Washington in which Bancorp or any of its affiliates has a place of business at
the time of termination; or

                  8.1.2    Hire for any financial institution or other employer
(including himself) any employee of Bancorp or any of its affiliates, or
directly or indirectly cause such an employee to leave his or her employment to
work for another employer, if such employee is to work in or from an office or
other work site in Yamhill, Wasco, Hood River, Jefferson, Deschutes, Sherman or
Gilliam Counties, Oregon, in Klickitat County, Washington, or in any other
county in Oregon or Washington in which Bancorp or any of its affiliates has a
place of business at the time of termination.

         8.2      LIQUIDATED DAMAGES FOR BREACH OF NON-COMPETE COVENANTS; OTHER
REMEDIES. If Employee breaches the covenants of Section 8.1, Employee shall be
liable

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to Bank for liquidated damages equal to the lesser of (i) $18,000, or
(ii) $1,500 multiplied by the number of months (including fractions thereof)
between the date of breach and one year from the date of Employee's termination
of employment. For example, if the date of breach occurs six months after the
date of Employee's termination, liquidated damages shall be $9,000 (6 x $1,500).
The parties agree that Bank's actual money damages upon Employee's breach will
be difficult to compute, and further agree that the liquidated damages formula
provided herein reasonably represents Bank's actual money damages. Employee
shall pay the liquidated damages required hereunder within ten (10) days of the
date Bank makes written demand for such payment. Nothing herein shall preclude
Bank from enforcing any other legal or equitable remedies it may have upon
Employee's breach, including injunctive relief. Such other remedies may be
enforced in addition to Bank's right to liquidated damages under this Section.

         8.3      LIMITATION. The covenants in Sections 8.1 and 8.2 do not apply
if Employee terminates his employment for cause, if Employee terminates his
employment for any reason within ninety (90) days after the effective date of a
change of control within the meaning of Section 7 of the Agreement, or if
Employee's employment is terminated by Bank without cause.

         8.4      ADDITIONAL COVENANTS. The following provisions shall apply and
be binding on Employee following Employee's termination of employment under all
circumstances, whether termination occurred with cause, without cause, following
illness or disability, because of a change of control, or for any other reason:

                  8.4.1    Employee shall fully cooperate in the defense or
prosecution of any litigation arising from or relating to matters about which
Employee has knowledge based on his employment or other work, paid or unpaid,
for Bank and its affiliates. To the extent allowed by law Employee shall receive
reasonable compensation in connection with his performance under this Section
8.4.1;

                  8.4.2    Employee shall at all times keep all confidential and
proprietary information gained from his employment by Bank, or from other
previous, present or subsequent paid or unpaid work for Bank and its affiliates,
in strictest confidence, and will not disclose or otherwise disseminate such
information to anyone, other than to employees of Bank or its affiliates, except
as may be required by law, regulation or subpoena; and

                  8.4.3    Employee shall not take or use for any purpose
confidential or proprietary information of Bank or its affiliates, including
without limitation customer or potential customer lists and trade secrets.

         8.5      ADVANCEMENT OF EMPLOYEE. Employee acknowledges and agrees that
the Agreement constitutes a bona fide advancement of Employee with the Employer
under ORS 653.295 in several respects, including without limitation an increase
in base salary and benefits.

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         9.       MISCELLANEOUS.

         9.1      RECITALS; LAW; AMENDMENTS. Each and every portion of the
Agreement is contractual and not a mere recital, and all recitals shall be
deemed incorporated into the Agreement. The Agreement shall be governed by and
interpreted according to Oregon law and any applicable federal law. The
Agreement may not be amended except by a subsequent written agreement signed by
all parties hereto.

         9.2      ENTIRE AGREEMENT. The Agreement contains the entire
understanding and agreement of the parties with respect to the parties'
relationship, and all prior negotiations, discussions or understandings, oral or
written, are hereby integrated herein. No prior negotiations, discussions or
agreements not contained herein or in such documents shall be binding or
enforceable against the parties.

         9.3      COUNTERPARTS. The Agreement may be signed in several
counterparts. The signature of one party on any counterpart shall bind such
party just as if all parties had signed that counterpart. Each counterpart shall
be considered an original. All counterparts of the Agreement shall together
constitute one original document.

         9.4      SUCCESSORS AND ASSIGNS. All rights and duties of Bank under
the Agreement shall be binding on and inure to the benefit of Bank's successors
and assigns, including any person or entity which acquires a controlling
interest in Bank and any person or entity which acquires all or substantially
all of Bank's assets. Bank and any such successor or assign shall be and remain
jointly and severally liable to Employee under the Agreement. Employee may not
assign or transfer Employee's rights or interests in or under the Agreement
other than by a will or by the laws of descent and distribution. The Agreement
shall inure to the benefit of and be enforceable by Employee's estate or legal
representative.

         9.5      WAIVER. Any waiver by any party hereto of any provision of the
Agreement, or of any breach thereof, shall not constitute a waiver of any other
provision or of any other breach. If any provision, paragraph or subparagraph
herein shall be deemed invalid, illegal or unenforceable in any respect, the
validity and enforceability of the remaining provisions, paragraphs and
subparagraphs shall not be affected.

         9.6      ARBITRATION. Any dispute, controversy, claim or difference
concerning or arising from the Agreement or the rights or performance of either
party under the Agreement, including disputes about the interpretation or
construction of the Agreement, shall be settled through binding arbitration in
the State of Oregon and in accordance with the rules of the American Arbitration
Association. A judgment upon the award rendered in such arbitration may be
entered in any court of competent jurisdiction.

         9.7      EMPLOYEE HANDBOOK. Employee agrees to be bound by the terms
and conditions of any employee handbook of Bank or its affiliates as may be in
effect from

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time to time, except that in the event of a conflict between such employee
handbook and the Agreement, the Agreement shall control.

         9.8      CAPTIONS. All captions, titles and headings in the Agreement
are for convenience only, and shall not be construed to limit any term of the
Agreement.

         9.9      DEFINITION. When used herein in reference to a corporation,
"affiliate" shall mean, without limitation, any parent or subsidiary of the
corporation and any entity controlled by the corporation.

         9.10     EXCEPTIONS. The Bank Board or the management of Bank may, in
its discretion, make exceptions to one or more of the conditions contained in
the Agreement, provided that any such exceptions must be approved in writing.

         9.11     PRIOR CONTRACTS. The Agreement replaces and supersedes all
prior written employment agreements and amendments thereof between the parties.

_____________________________________
Employee

COLUMBIA RIVER BANK

By:__________________________________

Title:_______________________________

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                                                                     EXHIBIT 4.1

                                COLUMBIA BANCORP

                                    as Issuer

                                    INDENTURE

                          Dated as of December 19, 2002

                     WELLS FARGO BANK, NATIONAL ASSOCIATION

                                   as Trustee

           FLOATING RATE JUNIOR SUBORDINATED DEBT SECURITIES DUE 2033

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                               Page
<S>                                                                            <C>
Parties.......................................................................  1
Recitals......................................................................  1
Authorization of
Indenture.....................................................................  1
Compliance with Legal Requirements............................................  1
Purpose of and Consideration for
Indenture.....................................................................  1


                                    ARTICLE I

                                   DEFINITIONS

SECTION 1.01. Definitions.....................................................  1
   Additional Interest........................................................  1
   Additional Provisions......................................................  1
   Authenticating Agent.......................................................  1
   Bankruptcy Law.............................................................  1
   Calculation Agent..........................................................  2
   Capital Se.................................................................  2
   Capital Securities Guarantee...............................................  2
   Capital Treatment Event....................................................  2
   Certificate................................................................  2
   Common Securities..........................................................  2
   Company....................................................................  3
   Comparable Treasury Issue..................................................  3
   Comparable Treasury Price..................................................  3
   Debt Security or Debt Securities...........................................  3
   Debt Security Register.....................................................  3
   Declaration................................................................  3
   Default....................................................................  3
   Defaulted..................................................................  3
   Extension Period...........................................................  3
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                             <C>
   Federal Re3 Indenture......................................................  3
   Institutional Trustee......................................................  3
   Interest Payment Date......................................................  4
   Interest Rate..............................................................  4
   Investment Company Event...................................................  4
   LIBOR......................................................................  4
   LIBOR Banking Day..........................................................  4
   LIBOR Business Day.........................................................  4
   LIBOR Determination Date...................................................  4
   Liquidation Amount.........................................................  4
   Maturity Date..............................................................  4
   Officers' Certificate......................................................  4
   Opinion of Counsel.........................................................  4
   Paying Agent...............................................................  5
   Person.....................................................................  5
   Predecessor Security.......................................................  5
   Primary Treasury Dealer....................................................  5
   Principal Office of the Trustee............................................  5
   Quotation Agent............................................................  5
   Redemption Date............................................................  5
   Redemption Price...........................................................  5
   Reference Treasury Dealer..................................................  5
   Reference Treasury Dealer Quotations.......................................  6
   Remaining Life.............................................................  6
   Responsible Officer........................................................  6
   Securityholder, holder of Debt Securities..................................  6
   Senior ....................................................................  6
   Special Event..............................................................  6
   Special Redemption Date....................................................  6
   Special Redemption Price...................................................  7
   Subsidiary.................................................................  7
   Tax Event..................................................................  7
   Treasury Rate..............................................................  7
   Trust......................................................................  8
   Trust Indenture Act........................................................  8
   Trust Security.............................................................  8
   Trustee....................................................................  8
   United States..............................................................  8
   U.S. Person................................................................  8
</TABLE>

                                   ARTICLE II

                                 DEBT SECURITIES
<TABLE>
<S>                                                                             <C>
SECTION 2.01. Authentication and Dating.......................................  8
SECTION 2.02. Form of Trustee's Certificate of Authentication.................  9
SECTION 2.03. Form and Denomination of Debt Securities........................  9
SECTION 2.04. Execution of Debt Securities....................................  9
</TABLE>

<PAGE>

<TABLE>
<S>                                                                            <C>
SECTION 2.05. Exchange and Registration of Transfer of Debt Securities........ 10
SECTION 2.06. Mutilated, Destroyed, Lost or Stolen Debt Securities............ 13
SECTION 2.07. Temporary Debt Securities....................................... 13
SECTION 2.08. Payment of Interest............................................. 14
SECTION 2.09. Cancellation of Debt Securities Paid, etc....................... 15
SECTION 2.10. Computation of Interest......................................... 15
SECTION 2.11. Extension of Interest Payment Period............................ 17
SECTION 2.12. CUSIP Numbers................................................... 18

                                   ARTICLE III

                       PARTICULAR COVENANTS OF THE COMPANY

SECTION 3.01. Payment of Principal, Premium and Interest; Agreed Treatment
                    of the Debt Securities.................................... 18
SECTION 3.02. Offices for Notices and Payments, etc........................... 19
SECTION 3.03. Appointments to Fill Vacancies in Trustee's Office.............. 19
SECTION 3.04. Provision as to Paying Agent.................................... 19
SECTION 3.05. Certificate to Trustee.......................................... 20
SECTION 3.06. Additional Interest............................................. 20
SECTION 3.07. Compliance with Consolidation Provisions........................ 21
SECTION 3.08. Limitation on Dividends......................................... 21
SECTION 3.09. Covenants as to the Trust....................................... 22

                                   ARTICLE IV
                LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

SECTION 4.01. Securityholders' Lists.......................................... 22
SECTION 4.02. Preservation and Disclosure of Lists............................ 23

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

SECTION 5.01. Events of Default............................................... 24
SECTION 5.02. Payment of Debt Securities on Default; Suit Therefor............ 26
SECTION 5.03. Application of Moneys Collected by Trustee...................... 27
SECTION 5.04. Proceedings by Securityholders.................................. 27
SECTION 5.05. Proceedings by Trustee.......................................... 28
SECTION 5.06. Remedies Cumulative and Continuing.............................. 28
SECTION 5.07. Direction of Proceedings and Waiver of Defaults by Majority of
                    Securityholders........................................... 28
SECTION 5.08. Notice of Defaults.............................................. 29
SECTION 5.09. Undertaking to Pay Costs........................................ 29
</TABLE>

<PAGE>

<TABLE>
<S>                                                                            <C>
                                  ARTICLE VI

                            CONCERNING THE TRUSTEE

SECTION 6.01. Duties and Responsibilities of Trustee.......................... 30
SECTION 6.02. Reliance on Documents, Opinions, etc............................ 31
SECTION 6.03. No Responsibility for Recitals, etc............................. 32
SECTION 6.04. Trustee, Authenticating Agent, Paying Agents, Transfer Agents
                    or Registrar May Own Debt Securities...................... 32
SECTION 6.05. Moneys to be Held in Trust...................................... 32
SECTION 6.06. Compensation and Expenses of Trustee............................ 33
SECTION 6.07. Officers' Certificate as Evidence............................... 33
SECTION 6.08. Eligibility of Trustee.......................................... 34
SECTION 6.09. Resignation or Removal of Trustee............................... 34
SECTION 6.10. Acceptance by Successor Trustee................................. 35
SECTION 6.11. Succession by Merger, etc....................................... 36
SECTION 6.12. Authenticating Agents........................................... 37

                                   ARTICLE VII

                         CONCERNING THE SECURITYHOLDERS

SECTION 7.01. Action by Securityholders....................................... 38
SECTION 7.02. Proof of Execution by Securityholders........................... 39
SECTION 7.03. Who Are Deemed Absolute Owners.................................. 39
SECTION 7.04. Debt Securities Owned by Company Deemed Not Outstanding......... 39
SECTION 7.05. Revocation of Consents; Future Holders Bound.................... 40

                                  ARTICLE VIII

                            SECURITYHOLDERS' MEETINGS

SECTION 8.01. Purposes of Meetings............................................ 40
SECTION 8.02. Call of Meetings by Trustee..................................... 40
SECTION 8.03. Call of Meetings by Company or Securityholders.................. 41
SECTION 8.04. Qualifications for Voting....................................... 41
SECTION 8.05. Regulations..................................................... 41
SECTION 8.06. Voting.......................................................... 42
SECTION 8.07. Quorum; Actions................................................. 42

                                   ARTICLE IX

                            SUPPLEMENTAL INDENTURES

SECTION 9.01. Supplemental Indentures without Consent of Securityholders...... 43
SECTION 9.02. Supplemental Indentures with Consent of Securityholders......... 44
SECTION 9.03. Effect of Supplemental Indentures............................... 45
SECTION 9.04. Notation on Debt Securities..................................... 45
SECTION 9.05. Evidence of Compliance of Supplemental Indenture to be
              Furnished to Trustee............................................ 46
</TABLE>

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<TABLE>
<S>                                                                            <C>
                                    ARTICLE X

                            REDEMPTION OF SECURITIES

SECTION 10.01. Optional Redemption............................................ 46
SECTION 10.02. Special Event Redemption....................................... 46
SECTION 10.03. Notice of Redemption; Selection of Debt Securities............. 46
SECTION 10.04. Payment of Debt Securities Called for Redemption............... 47

                                   ARTICLE XI

                CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

SECTION 11.01. Company May Consolidate, etc., on Certain Terms................ 48
SECTION 11.02. Successor Entity to be Substituted............................. 48
SECTION 11.03. Opinion of Counsel to be Given to Trustee...................... 49

                                  ARTICLE XII

                    SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 12.01. Discharge of Indenture......................................... 49
SECTION 12.02. Deposited Moneys to be Held in Trust by Trustee................ 50
SECTION 12.03. Paying Agent to Repay Moneys Held.............................. 50
SECTION 12.04. Return of Unclaimed Moneys..................................... 50

                                  ARTICLE XIII

         IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

SECTION 13.01. Indenture and Debt Securities Solely Corporate Obligations..... 50

                                   ARTICLE XIV

                            MISCELLANEOUS PROVISIONS

SECTION 14.01. Successors..................................................... 51
SECTION 14.02. Official Acts by Successor Entity.............................. 51
SECTION 14.03. Surrender of Company Powers.................................... 51
SECTION 14.04. Addresses for Notices, etc..................................... 51
SECTION 14.05. Governing Law.................................................. 52
SECTION 14.06. Evidence of Compliance with Conditions Precedent............... 52
SECTION 14.07. Non-Business Days.............................................. 52
SECTION 14.08. Table of Contents, Headings, etc............................... 52
SECTION 14.09. Execution in Counterparts...................................... 52
SECTION 14.10. Separability................................................... 53
SECTION 14.11. Assignment..................................................... 53
SECTION 14.12. Acknowledgment of Rights....................................... 53

                                   ARTICLE XV

                        SUBORDINATION OF DEBT SECURITIES

</TABLE>

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<TABLE>
<S>                                                                            <C>
SECTION 15.01. Agreement to Subordinate....................................... 53
SECTION 15.02. Default on Senior Indebtedness................................. 54
SECTION 15.03. Liquidation; Dissolution; Bankruptcy........................... 54
SECTION 15.04. Subrogation.................................................... 55
SECTION 15.05. Trustee to Effectuate Subordination............................ 56
SECTION 15.06. Notice by the Company.......................................... 56
SECTION 15.07. Rights of the Trustee; Holders of Senior Indebtedness.......... 57
SECTION 15.08. Subordination May Not Be Impaired.............................. 58
EXHIBITS
EXHIBIT A FORM OF DEBT SECURITY
</TABLE>

<PAGE>

THIS INDENTURE, dated as of December 19, 2002, between Columbia Bancorp, a bank
holding company incorporated in Oregon (hereinafter sometimes called the
"Company"), and Wells Fargo Bank, National Association, a national banking
association with its principal place of business in the State of Delaware, as
trustee (hereinafter sometimes called the "Trustee").

                             W I T N E S S E T H :

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

                  NOW, THEREFORE, in consideration of the premises, and the
purchase of the Debt Securities 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 Debt Securities as follows:

   ARTICLE I

         DEFINITIONS SECTION 1.01. Definitions.


                  The terms defined in this Section 1.01 (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 1.01. 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" shall have the meaning set forth in
Section 3.06.

                  "Additional Provisions" shall have the meaning set forth in
Section 15.01.

                  "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.

1

<PAGE>

"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 Wilmington, Delaware, New York
City or The Dalles, Oregon are permitted or required by any applicable law or
executive order to close.

                  "Calculation Agent" means the Person identified as "Trustee"
in the first paragraph hereof with respect to the Debt Securities and the
Institutional Trustee with respect to the Trust Securities.

                  "Capital Securities" means undivided beneficial interests in
the assets of the Trust which are designated as "TP Securities" and rank pari
passu with Common Securities issued by the Trust; provided, however, that if an
Event of Default (as defined in the Declaration) has occurred and is continuing,
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 will enter into with Wells Fargo Bank, National Association 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 any amendment to, or 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 Debt
Securities, 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 the then equivalent thereof) for purposes of the capital adequacy
guidelines of the Federal Reserve (or any successor regulatory authority with
jurisdiction over bank holding companies), as then in effect and applicable to
the Company, provided, however, that the distribution of the Debt Securities in
connection with the liquidation of the Trust by the Company 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.

                  "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 are designated as "Common Securities" and rank
pari passu with Capital Securities issued by the Trust; provided, however, that
if an Event of Default (as defined in the Declaration) has occurred and is
continuing, the rights of holders of such Common Securities to payment in

2

<PAGE>

respect of distributions and payments upon liquidation, redemption and otherwise
are subordinated to the rights of holders of such Capital Securities.

                  "Company" means Columbia Bancorp, a bank holding company
incorporated in Oregon, 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 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 Remaining Life. If no United States Treasury security has a
maturity which is within a period from three months before to three months after
January 7, 2008, the two most closely corresponding United States Treasury
securities 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 receives fewer than five such Reference Treasury
Dealer Quotations, the average of all such Quotations.

                  "Debt Security" or "Debt Securities" has the meaning stated in
the first recital of this Indenture.

                  "Debt Security Register" has the meaning specified in Section
2.05.

                  "Declaration" means the Amended and Restated Declaration of
Trust of the Trust dated as of December 19, 2002, 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
2.08.

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

                  "Event of Default" means any event specified in Section 5.01,
which has 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.

                  "Federal Reserve" means the Board of Governors of the Federal
Reserve System.

                  "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.

3
<PAGE>

"Interest Payment Date" means April 7, July 7, October 7 and January 7 of each
year, commencing on April 7, 2003, during the term of this Indenture.

                  "Interest Rate" means a per annum rate of interest, reset
quarterly, equal to LIBOR, as determined on the LIBOR Determination Date
immediately preceding each Interest Payment Date, plus 3.30%.

                  "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 a change in law or regulation or written 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 original issuance of the Debt Securities.

                  "LIBOR" means the London Interbank Offered Rate for U.S.
Dollar deposits in Europe as determined by the Calculation Agent according to
Section 2.10(b).

                  "LIBOR Banking Day" has the meaning set forth in Section
2.10(b)(1).

                  "LIBOR Business Day" has the meaning set forth in Section
2.10(b)(1).

                  "LIBOR Determination Date" has the meaning set forth in
Section 2.10(b).

                  "Liquidation Amount" means the stated amount of $1,000 per
Trust Security.

                  "Maturity Date" means January 7, 2033.

                  "Officers' Certificate" means a certificate signed by the
Chairman of the Board, the Vice Chairman, the President or any Vice President,
and by the Chief Financial Officer, 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 14.06 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 14.06 if and to the extent
required by the provisions of such Section.

                  The term "outstanding," when used with reference to Debt
Securities, subject to the provisions of Section 7.04, means, as of any
particular time, all Debt Securities authenticated and delivered by the Trustee
or the Authenticating Agent under this Indenture, except

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

4
<PAGE>

(b) Debt Securities, 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, that, if such Debt Securities, or portions thereof,
are to be redeemed prior to maturity thereof, notice of such redemption shall
have been given as provided in Articles X and XIV or provision satisfactory to
the Trustee shall have been made for giving such notice; and

                  (c) Debt Securities paid pursuant to Section 2.06 or in lieu
         of or in substitution for which other Debt Securities shall have been
         authenticated and delivered pursuant to the terms of Section 2.06
         unless proof satisfactory to the Company and the Trustee is presented
         that any such Debt Securities are held by bona fide holders in due
         course.

                  "Paying Agent" has the meaning set forth in Section 3.04(e).

                  "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 Debt Security means
every previous Debt Security evidencing all or a portion of the same debt as
that evidenced by such particular Debt Security; and, for the purposes of this
definition, any Debt Security authenticated and delivered under Section 2.06 in
lieu of a lost, destroyed or stolen Debt Security shall be deemed to evidence
the same debt as the lost, destroyed or stolen Debt Security.

                  "Primary Treasury Dealer" means a primary United States
Government securities dealer in New York City.

                  "Principal Office of the Trustee" means the office of the
Trustee, at which at any particular time its corporate trust business shall be
principally administered, which at all times shall be located within the United
States and at the time of the execution of this Indenture shall be 919 Market
Street, Suite 700, Wilmington, DE 19801.

                  "Quotation Agent" means Salomon Smith Barney Inc. 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 10.01.

                  "Redemption Price" means 100% of the principal amount of the
Debt Securities being redeemed plus accrued and unpaid interest on such Debt
Securities to the Redemption Date or, in the case of a redemption due to the
occurrence of a Special Event, to the Special Redemption Date if such Special
Redemption Date is on or after January 7, 2008.

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

5
<PAGE>

"Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any Special 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 Trustee by such Reference Treasury Dealer at 5:00 p.m., New York
City time, on the third Business Day preceding such Special Redemption Date.

                  "Remaining Life" means, with respect to any Debt Security, the
period from the Special Redemption Date for such Debt Security to January 7,
2008.

                  "Responsible Officer" means, with respect to the Trustee, any
officer within the Principal Office of the Trustee with direct responsibility
for the administration of the Indenture, 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
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.

                  "Securityholder," "holder of Debt Securities" or other similar
terms, means any Person in whose name at the time a particular Debt Security is
registered on the Debt Security Register.

                  "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 (but excluding trade accounts payable
arising in the ordinary course of business); (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, unless, with the prior approval of the Federal Reserve if not
otherwise generally approved, in the instrument creating or evidencing the same
or pursuant to which the same is outstanding, it is provided that such
obligations are not superior or are pari passu in right of payment to the Debt
Securities.

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

                  "Special Redemption Date" has the meaning set forth in Section
10.02.

6
<PAGE>

"Special Redemption Price" means (1) if the Special Redemption Date is before
January 7, 2008, the greater of (a) 100% of the principal amount of the Debt
Securities being redeemed pursuant to Section 10.02 or (b) as determined by a
Quotation Agent, the sum of the present values of the principal amount payable
as part of the Redemption Price with respect to a redemption as of January 7,
2008, together with the present value of interest payments calculated at a fixed
per annum rate of interest equal to 7.125% over the Remaining Life of such Debt
Securities, 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 0.50%, plus, in the case of either (a) or (b), accrued and unpaid
interest on such Debt Securities to the Special Redemption Date and (2) if the
Special Redemption Date is on or after January 7, 2008, the Redemption Price for
such 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, regulatory procedure, notice or announcement (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 Debt Securities, 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 Debt Securities; (ii) interest payable by the Company on the Debt Securities
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 or otherwise required to pay, or required to withhold from
distributions to holders of Trust Securities, more than a de minimis amount of
other taxes (including withholding taxes), duties, assessments or other
governmental charges.

                  "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

7
<PAGE>

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 Remaining Life (if no maturity is within three months before or after the
Remaining Life, yields for the two published maturities most closely
corresponding to the 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 quarterly 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 Treasury Rate shall be calculated on the third Business Day preceding the
Special Redemption Date.

                  "Trust" means Columbia Bancorp Trust I, the Delaware statutory
trust, or any other similar trust created for the purpose of issuing Capital
Securities in connection with the issuance of Debt Securities under this
Indenture, of which the Company is the sponsor.

                  "Trust Indenture Act" means the Trust Indenture Act of 1939,
as amended from time-to-time, or any successor legislation.

                  "Trust Securities" means Common Securities and Capital
Securities of Columbia Bancorp Trust I.

                  "Trustee" means the Person identified as "Trustee" in the
first paragraph hereof, and, subject to the provisions of Article VI hereof,
shall also include its successors and assigns as Trustee hereunder.

                  "United States" means the United States of America and the
District of Columbia.

                  "U.S. Person" has the meaning given to United States Person as
set forth in Section 7701(a)(30) of the Internal Revenue Code of 1986, as
amended.

                                   ARTICLE II

            DEBT SECURITIES SECTION 2.01. Authentication and Dating.

                  Upon the execution and delivery of this Indenture, or from
time to time thereafter, Debt Securities in an aggregate principal amount not in
excess of $4,124,000 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 Debt Securities to or upon the written order of the
Company, signed by its Chairman of the Board of Directors, Vice Chairman,
President or Chief Financial Officer or one of its Vice Presidents, without any
further action by the Company hereunder. In authenticating such Debt Securities,
and accepting the additional responsibilities under this Indenture in relation
to such Debt Securities, the Trustee shall be entitled to receive, and (subject
to Section 6.01) shall be fully protected in relying upon a copy of any Board

8
<PAGE>

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 or other officers with
appropriate delegated authority of the Company as the case may be.

                 The Trustee shall have the right to decline to authenticate and
deliver any Debt Securities under this Section if the Trustee, being advised 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
Securityholders.

         The definitive Debt Securities 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 Debt Securities, as evidenced by
their execution of such Debt Securities. SECTION 2.02. Form of Trustee's
Certificate of Authentication.

                  The Trustee's certificate of authentication on all Debt
Securities shall be in substantially the following form:

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

                  WELLS FARGO BANK, NATIONAL ASSOCIATION, not in its individual
capacity but solely as trustee

                  By_________________________ Authorized Officer SECTION 2.03.
Form and Denomination of Debt Securities.


         The Debt Securities shall be substantially in the form of Exhibit A
hereto. The Debt Securities shall be in registered, certificated form without
coupons and in minimum denominations of $100,000 and any multiple of $1,000 in
excess thereof. The Debt Securities 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 2.04. Execution of Debt
Securities.

                  The Debt Securities 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, Vice Chairman, President or Chief Financial Officer or one of its
Executive Vice Presidents, Senior Vice Presidents or Vice Presidents, under its
corporate seal which may be affixed thereto or printed, engraved or otherwise
reproduced thereon, by facsimile or otherwise, and which need not be attested.
Only such Debt Securities 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 officer, 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
Debt Security executed by the Company shall be conclusive

9
<PAGE>

evidence that the Debt Security 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 Debt Securities shall cease to be such officer before the Debt Securities
so signed shall have been authenticated and delivered by the Trustee or the
Authenticating Agent, or disposed of by the Company, such Debt Securities
nevertheless may be authenticated and delivered or disposed of as though the
Person who signed such Debt Securities had not ceased to be such officer of the
Company; and any Debt Security may be signed on behalf of the Company by such
Persons as, at the actual date of the execution of such Debt Security, 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 Debt Security shall be dated the date of its
authentication. SECTION 2.05. Exchange and Registration of Transfer of Debt
Securities.

                  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 3.02, a register (the "Debt Security Register") for the Debt
Securities issued hereunder in which, subject to such reasonable regulations as
it may prescribe, the Company shall provide for the registration and transfer of
all Debt Securities as provided in this Article II. Such register shall be in
written form or in any other form capable of being converted into written form
within a reasonable time.

                  Debt Securities 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 3.02, 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 Debt Security or Debt Securities which the Securityholder
making the exchange shall be entitled to receive. Upon due presentment for
registration of transfer of any Debt Security at the Principal Office of the
Trustee or at any office or agency of the Company maintained for such purpose as
provided in Section 3.02, 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 Debt Security for a like aggregate principal amount. Registration or
registration of transfer of any Debt Security by the Trustee or by any agent of
the Company appointed pursuant to Section 3.02, and delivery of such Debt
Security, shall be deemed to complete the registration or registration of
transfer of such Debt Security.

                  All Debt Securities 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
either the Trustee or the Authenticating Agent duly executed by, the holder or
such holder's attorney duly authorized in writing.

10
<PAGE>

No service charge shall be made for any exchange or registration of transfer of
Debt Securities, 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 Debt Security for a period of 15 days immediately
preceding the date of selection of Debt Securities for redemption.

                  Notwithstanding the foregoing, Debt Securities may not be
transferred except in compliance with the restricted securities legend set forth
below, unless otherwise determined by the Company in accordance with applicable
law, which legend shall be placed on each Debt Security:

                  THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAWS. 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. THE HOLDER OF THIS SECURITY BY ITS
ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY ONLY
(A) TO THE COMPANY, (B) PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE
144A"), TO A PERSON THE HOLDER REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE
TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) PURSUANT TO AN EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT TO AN "ACCREDITED
INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (a) (1), (2), (3) OR (7) OF RULE
501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT,
OR FOR THE ACCOUNT OF AN "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 (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE
COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES
(C) OR (D) 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 AGREES THAT IT WILL COMPLY WITH THE FOREGOING
RESTRICTIONS.

                  THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES,
REPRESENTS AND WARRANTS THAT IT WILL NOT ENGAGE IN HEDGING

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<PAGE>

TRANSACTIONS INVOLVING THIS SECURITY UNLESS SUCH TRANSACTIONS ARE IN COMPLIANCE
WITH THE SECURITIES ACT.

                  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 THIS SECURITY OR ANY INTEREST THEREIN,
UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE 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 THIS SECURITY 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.

                  IN CONNECTION WITH ANY TRANSFER, THE HOLDER OF THIS SECURITY
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.

                  THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN
BLOCKS HAVING A PRINCIPAL AMOUNT OF NOT LESS THAN $100,000 AND MULTIPLES OF
$1,000 IN EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A BLOCK
HAVING A PRINCIPAL AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND
OF NO LEGAL EFFECT WHATSOEVER. ANY SUCH PURPORTED TRANSFEREE SHALL BE DEEMED NOT
TO BE THE HOLDER OF THIS SECURITY FOR ANY PURPOSE, INCLUDING, BUT NOT LIMITED
TO, THE RECEIPT OF DISTRIBUTIONS ON THIS SECURITY, AND SUCH PURPORTED TRANSFEREE
SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN THIS SECURITY.

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<PAGE>

SECTION 2.06. Mutilated, Destroyed, Lost or Stolen Debt Securities.

                  In case any Debt Security 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 Debt Security bearing
a number not contemporaneously outstanding, in exchange and substitution for the
mutilated Debt Security, or in lieu of and in substitution for the Debt Security
so destroyed, lost or stolen. In every case the applicant for a substituted Debt
Security 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 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 Debt Security and of the ownership thereof.

                  The Trustee may authenticate any such substituted Debt
Security and deliver the same upon the written request or authorization of any
officer of the Company. Upon the issuance of any substituted Debt Security, 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 Debt Security 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 Debt Security, pay or authorize the payment of the same (without
surrender thereof except in the case of a mutilated Debt Security) 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 Security and of the
ownership thereof.

         Every substituted Debt Security issued pursuant to the provisions of
this Section 2.06 by virtue of the fact that any such Debt Security is
destroyed, lost or stolen shall constitute an additional contractual obligation
of the Company, whether or not the destroyed, lost or stolen Debt Security 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 Debt Securities
duly issued hereunder. All Debt Securities 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 Debt Securities 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
2.07. Temporary Debt Securities.

                  Pending the preparation of definitive Debt Securities, the
Company may execute and the Trustee shall authenticate and make available for
delivery temporary Debt Securities that are typed, printed or lithographed.
Temporary Debt Securities shall be issuable in any authorized denomination, and
substantially in the form of the definitive Debt Securities but with such
omissions, insertions and variations as may be appropriate for temporary Debt
Securities, all as may be determined by the Company. Every such temporary Debt
Security 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 Debt Securities. Without

13
<PAGE>

         unreasonable delay, the Company will execute and deliver to the Trustee
or the Authenticating Agent definitive Debt Securities and thereupon any or all
temporary Debt Securities may be surrendered in exchange therefor, at the
Principal Office of the Trustee or at any office or agency maintained by the
Company for such purpose as provided in Section 3.02, and the Trustee or the
Authenticating Agent shall authenticate and make available for delivery in
exchange for such temporary Debt Securities a like aggregate principal amount of
such definitive Debt Securities. 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 Debt Securities
shall in all respects be entitled to the same benefits under this Indenture as
definitive Debt Securities authenticated and delivered hereunder. SECTION 2.08.
Payment of Interest.

                  Each Debt Security will bear interest at the then applicable
Interest Rate from and including each Interest Payment Date or, in the case of
the first interest period, the original date of issuance of such Debt Security
to, but excluding, the next succeeding Interest Payment Date or, in the case of
the last interest period, the Redemption Date, Special Redemption Date or
Maturity Date, as applicable, on the principal thereof, on any overdue principal
and (to the extent that payment of such interest is enforceable under applicable
law) on Deferred Interest and on any overdue installment of interest (including
Defaulted Interest), payable (subject to the provisions of Article XII) on each
Interest Payment Date commencing on April 7, 2003. Interest and any Deferred
Interest on any Debt Security that is payable, and is punctually paid or duly
provided for by the Company, on any Interest Payment Date shall be paid to the
Person in whose name said Debt Security (or 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 Deferred Interest payable on
the Maturity Date shall be paid to the Person to whom principal is paid. In the
event that any Debt Security or portion thereof is called for redemption and the
redemption date is subsequent to a regular record date with respect to any
Interest Payment Date and prior to such Interest Payment Date, interest on such
Debt Security will be paid upon presentation and surrender of such Debt
Security.

                  Any interest on any Debt Security, other than Deferred
Interest, that is payable, but is not punctually paid or duly provided for by
the Company, 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 Debt
Securities (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 of the amount of Defaulted Interest proposed to be paid
on each such Debt Security 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 reasonably 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

14
<PAGE>

payment of such Defaulted Interest which shall not be more than fifteen nor less
than ten days prior to the date of the proposed payment and not less than ten
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 his or her
address as it appears in the Debt Security Register, not less than ten 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 Debt Securities (or their respective Predecessor Securities) are registered
on such special record date and thereafter the Company shall have no further
payment obligation in respect of the Defaulted Interest.

                  Any 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 Debt Securities.

                  The term "regular record date" as used in this Section shall
mean the fifteenth day prior to an Interest Payment Date whether or not such
date is a Business Day.

         Subject to the foregoing provisions of this Section, each Debt Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Debt Security shall carry the rights to interest
accrued and unpaid, and to accrue, that were carried by such other Debt
Security. SECTION 2.09. Cancellation of Debt Securities Paid, etc.

         All Debt Securities 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 Debt Securities shall be issued in lieu thereof except as
expressly permitted by any of the provisions of this Indenture. All Debt
Securities canceled by any Authenticating Agent shall be delivered to the
Trustee. The Trustee shall destroy all canceled Debt Securities unless the
Company otherwise directs the Trustee in writing, in which case the Trustee
shall dispose of such Debt Securities as directed by the Company. If the Company
shall acquire any of the Debt Securities, however, such acquisition shall not
operate as a redemption or satisfaction of the indebtedness represented by such
Debt Securities unless and until the same are surrendered to the Trustee for
cancellation. SECTION 2.10. Computation of Interest.

                  (a) The amount of interest payable for any interest period
will be computed on the basis of a 360-day year and the actual number of days
elapsed in the relevant interest period; provided, however, that upon the
occurrence of a Special Event Redemption pursuant to Section 10.02 the amounts
payable pursuant to this Indenture shall be calculated as set forth in the
definition of Special Redemption Price.

15

(b) LIBOR shall be determined by the Calculation Agent in accordance with the
following provisions:

                           (1) On the second LIBOR Business Day (provided, that
                  on such day commercial banks are open for business (including
                  dealings in foreign currency deposits) in London (a "LIBOR
                  Banking Day"), and otherwise the next preceding LIBOR Business
                  Day that is also a LIBOR Banking Day) prior to January 15,
                  April 15, July 15 and October 15 (except, with respect to the
                  first interest payment period, on December 17, 2002), (each
                  such day, a "LIBOR Determination Date"), LIBOR shall equal the
                  rate, as obtained by the Calculation Agent for three-month
                  U.S. Dollar deposits in Europe, which appears on Telerate

<PAGE>

                  Page 3750 (as defined in the International Swaps and
                  Derivatives Association, Inc. 1991 Interest Rate and Currency
                  Exchange Definitions) or such other page as may replace such
                  Telerate Page 3750, as of 11:00 a.m. (London time) on such
                  LIBOR Determination Date, as reported by Bloomberg Financial
                  Markets Commodities News. "LIBOR Business Day" means any day
                  that is not a Saturday, Sunday or other day on which
                  commercial banking institutions in New York, New York or
                  Wilmington, Delaware are authorized or obligated by law or
                  executive order to be closed. If such rate is superseded on
                  Telerate Page 3750 by a corrected rate before 12:00 noon
                  (London time) on the same LIBOR Determination Date, the
                  corrected rate as so substituted will be the applicable LIBOR
                  for that LIBOR Determination Date.

                           (2) If, on any LIBOR Determination Date, such rate
                  does not appear on Telerate Page 3750 as reported by Bloomberg
                  Financial Markets Commodities News or such other page as may
                  replace such Telerate Page 3750, the Calculation Agent shall
                  determine the arithmetic mean of the offered quotations of the
                  Reference Banks (as defined below) to leading banks in the
                  London interbank market for three-month U.S. Dollar deposits
                  in Europe (in an amount determined by the Calculation Agent)
                  by reference to requests for quotations as of approximately
                  11:00 a.m. (London time) on the LIBOR Determination Date made
                  by the Calculation Agent to the Reference Banks. If, on any
                  LIBOR Determination Date, at least two of the Reference Banks
                  provide such quotations, LIBOR shall equal the arithmetic mean
                  of such quotations. If, on any LIBOR Determination Date, only
                  one or none of the Reference Banks provide such a quotation,
                  LIBOR shall be deemed to be the arithmetic mean of the offered
                  quotations that at least two leading banks in the City of New
                  York (as selected by the Calculation Agent) are quoting on the
                  relevant LIBOR Determination Date for three-month U.S. Dollar
                  deposits in Europe at approximately 11:00 a.m. (London time)
                  (in an amount determined by the Calculation Agent). As used
                  herein, "Reference Banks" means four major banks in the London
                  interbank market selected by the Calculation Agent.

                           (3) If the Calculation Agent is required but is
                  unable to determine a rate in accordance with at least one of
                  the procedures provided above, LIBOR shall be LIBOR in effect
                  on the previous LIBOR Determination Date (whether or

16

<PAGE>

not LIBOR for such period was in fact determined on such LIBOR Determination
Date).

                  (c) All percentages resulting from any calculations on the
Debt Securities 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).

         (d) On each LIBOR Determination Date, the Calculation Agent shall
notify, in writing, the Company and the Paying Agent of the applicable Interest
Rate in effect for the related Interest Payment Date. The Calculation Agent
shall, upon the request of the holder of any Debt Securities, provide the
Interest Rate then in effect. All calculations made by the Calculation Agent in
the absence of manifest error shall be conclusive for all purposes and binding
on the Company and the Holders of the Debt Securities. The Paying Agent shall be
entitled to rely on information received from the Calculation Agent or the
Company as to the Interest Rate. The Company shall, from time to time, provide
any necessary information to the Paying Agent relating to any original issue
discount and interest on the Debt Securities that is included in any payment and
reportable for taxable income calculation purposes. 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 Debt Securities by extending
the interest payment period on the Debt Securities at any time and from time to
time during the term of the Debt Securities, for up to twenty consecutive
quarterly periods (each such extended interest payment period, an "Extension
Period"), during which Extension Period no interest shall be due and payable
(except any Additional Interest that may be due and payable). No Extension
Period may end on a date other than an Interest Payment Date. During any
Extension Period, interest will continue to accrue on the Debt Securities, and
interest on such accrued interest (such accrued interest and interest thereon
referred to herein as "Deferred Interest") will accrue at an annual rate equal
to the Interest Rate in effect for such Extension Period, compounded quarterly
from the date such Deferred Interest would have been payable were it not for the
Extension Period, to the extent permitted by law. No interest or Deferred
Interest shall be due and payable during an Extension Period, except at the end
thereof. At the end of any such Extension Period the Company shall pay all
Deferred Interest then accrued and unpaid on the Debt Securities; provided,
however, that no Extension Period may extend beyond the Maturity Date; and
provided further, however, that during any such Extension Period, the Company
shall be subject to the restrictions set forth in Section 3.08 of this
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 twenty
consecutive quarterly periods, or extend beyond the Maturity Date. Upon the
termination of any Extension Period and upon the payment of all Deferred
Interest, the Company may commence a new Extension Period, subject to the
foregoing requirements. The Company must give the Trustee notice of its election
to begin such Extension Period at least one Business Day prior to the earlier of
(i) the next succeeding date on which interest on the Debt Securities would have
been payable except for the

17
<PAGE>

         election to begin such Extension Period or (ii) the date such interest
is payable, but in any event not later than the related regular record date. 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 Debt Securities may use a "CUSIP"
number (if then generally in use), and, if so, the Trustee shall use a "CUSIP"
number in notices of redemption as a convenience to Securityholders; provided,
that any such notice may state that no representation is made as to the
correctness of such number either as printed on the Debt Securities or as
contained in any notice of a redemption and that reliance may be placed only on
the other identification numbers printed on the Debt Securities, 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 number.

                                  ARTICLE III

         PARTICULAR COVENANTS OF THE COMPANY SECTION 3.01. Payment of Principal,
Premium and Interest; Agreed Treatment of the Debt Securities.


                  (a) The Company covenants and agrees that it will duly and
punctually pay or cause to be paid all payments due on the Debt Securities at
the place, at the respective times and in the manner provided in this Indenture
and the Debt Securities. At the option of the Company, each installment of
interest on the Debt Securities may be paid (i) by mailing checks for such
interest payable to the order of the holders of Debt Securities entitled thereto
as they appear on the Debt Security Register or (ii) by wire transfer to any
account with a banking institution located in the United States designated by
such Person to the Paying Agent no later than the related record date.

                  (b) The Company will treat the Debt Securities as
indebtedness, and the interest payable in respect of such Debt Securities as
interest, for all U.S. federal income tax purposes. All payments in respect of
such Debt Securities will be made free and clear of U.S. withholding tax to any
beneficial owner thereof that has provided an Internal Revenue Service Form W-8
BEN (or any substitute or successor form) establishing its non-U.S. status for
U.S. federal income tax purposes.

                  (c) As of the date of this Indenture, the Company has no
intention to exercise its right under Section 2.11 to defer payments of interest
on the Debt Securities 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 Debt Securities by commencing an Extension Period at
any time during which the Debt Securities 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

18
<PAGE>

         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 Debt Securities. SECTION 3.02. Offices for Notices and
Payments, etc.

                  So long as any of the Debt Securities remain outstanding, the
Company will maintain in Wilmington, Delaware or in The Dalles, Oregon an office
or agency where the Debt Securities may be presented for payment, an office or
agency where the Debt Securities may be presented for registration of transfer
and for exchange as provided in this Indenture and an office or agency where
notices and demands to or upon the Company in respect of the Debt Securities 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 2.05, such
office or agency for all of the above purposes shall be the Principal Office of
the Trustee. In case the Company shall fail to maintain any such office or
agency in Wilmington, Delaware or in The Dalles, Oregon 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 Wilmington, Delaware or
The Dalles, Oregon where the Debt Securities may be presented for 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 Wilmington, Delaware or in The Dalles, Oregon for
the purposes above mentioned. The Company will give to the Trustee prompt
written notice of any such designation or rescission thereof. SECTION 3.03.
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 6.09, a
Trustee, so that there shall at all times be a Trustee hereunder. SECTION 3.04.
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 3.04,

                           (1) that it will hold all sums held by it as such
                  agent for the payment of all payments due on the Debt
                  Securities (whether such sums have been paid to it by the
                  Company or by any other obligor on the Debt Securities) in
                  trust for the benefit of the holders of the Debt Securities;

19
<PAGE>

(2) that it will give the Trustee prompt written notice of any failure by the
Company (or by any other obligor on the Debt Securities) to make any payment on
the Debt Securities 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 payments due on the Debt Securities, set
aside, segregate and hold in trust for the benefit of the holders of the Debt
Securities a sum sufficient to pay such 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 Debt Securities) to make any
payment on the Debt Securities when the same shall become due and payable.

                  Whenever the Company shall have one or more Paying Agents for
the Debt Securities, it will, on or prior to each due date of the payments on
the Debt Securities, deposit with a Paying Agent a sum sufficient to pay all
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 3.04 to the contrary
notwithstanding, the Company may, at any time, for the purpose of obtaining a
satisfaction and discharge with respect to the Debt Securities, 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 same terms and conditions herein contained.

                  (d) Anything in this Section 3.04 to the contrary
notwithstanding, the agreement to hold sums in trust as provided in this Section
3.04 is subject to Sections 12.03 and 12.04.

         (e) The Company hereby initially appoints the Trustee to act as Paying
Agent (the "Paying Agent"). SECTION 3.05. 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 Debt Securities 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 by the Company in the performance of any covenants of the Company
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 thereof. SECTION 3.06. Additional Interest.

                  If and for so long as the Trust is the holder of all Debt
Securities and is subject to or otherwise required to pay, or is required to
withhold from distributions to holders of Trust

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Securities, 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 (the "Additional Interest") on the Debt
Securities as shall be required so that the net amounts received and retained by
the Trust for distribution to holders of Trust Securities after paying all taxes
(including withholding taxes on distributions to holders of Trust Securities),
duties, assessments or other governmental charges will be equal to the amounts
the Trust would have received and retained for distribution to holders of Trust
Securities after paying all taxes (including withholding taxes on distributions
to holders of Trust Securities), duties, assessments or other governmental
charges if no such additional taxes, duties, assessments or other governmental
charges had been imposed. Whenever in this Indenture or the Debt Securities
there is a reference in any context to the payment of principal of or interest
on the Debt Securities, such mention shall be deemed to include mention of
payments of the Additional Interest provided for in this paragraph to the extent
that, in such context, Additional Interest is, was or would be payable in
respect thereof pursuant to the provisions of this paragraph and express mention
of the payment of Additional Interest (if applicable) in any provisions hereof
shall not be construed as excluding Additional Interest 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 Interest that may be
due and payable.

         SECTION 3.07. Compliance with Consolidation Provisions.


         The Company will not, while any of the Debt Securities remain
outstanding, consolidate with, or merge into any other Person, 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
3.08. Limitation on Dividends.

                  If Debt Securities 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 Debt Securities 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 Debt Securities by
extending the interest payment period as provided herein and such period, or any
extension thereof, shall have commenced and be continuing, then the Company may
not (A) 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 (B) make any payment of principal of or interest or premium, if
any, on or repay, repurchase or redeem any debt securities of the Company that
rank pari passu in all respects with or junior in interest to the Debt
Securities (other than (a) repurchases, redemptions or other acquisitions of
shares of capital stock of the Company (I) 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, (II) in connection
with a dividend reinvestment or stockholder stock purchase plan or (III) 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 occurrence of (i),

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<PAGE>

         (ii) or (iii) above, (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 stockholder's rights
plan, or the issuance of rights, stock or other property under any stockholder's
rights plan, or the redemption or repurchase of rights pursuant thereto, or (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). SECTION 3.09. Covenants as to
the Trust.

                  For so long as such 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 that
is a U.S. Person may succeed to the Company's ownership of such Common
Securities. The Company, as owner of the Common Securities, shall use
commercially reasonable efforts to cause the Trust (a) to remain a statutory
trust, except in connection with a distribution of Debt Securities 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, (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 Debt Securities.

                                   ARTICLE IV

         LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE SECTION 4.01.
Securityholders' Lists.


                  The Company covenants and agrees that it will furnish or cause
to be furnished to the Trustee:

                  (a) on each regular record date for an Interest Payment Date,
a list, in such form as the Trustee may reasonably require, of the names and
addresses of the Securityholders of the Debt Securities 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 4.01 so long as
the Trustee is in possession thereof by reason of its acting as Debt Security
registrar.

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<PAGE>

SECTION 4.02. 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 Debt Securities (1) contained in the most recent list furnished to it
as provided in Section 4.01 or (2) received by it in the capacity of Debt
Securities registrar (if so acting) hereunder. The Trustee may destroy any list
furnished to it as provided in Section 4.01 upon receipt of a new list so
furnished.

                  (b) In case three or more holders of Debt Securities
(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
Debt Security for a period of at least six months preceding the date of such
application, and such application states that the applicants desire to
communicate with other holders of Debt Securities with respect to their rights
under this Indenture or under such Debt Securities 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 five 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 4.02, or

                           (2) inform such applicants as to the approximate
         number of holders of Debt Securities 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 4.02, 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 of Debt Securities 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 4.02 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 Debt Securities, 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.

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<PAGE>

(c) Each and every holder of Debt Securities, by receiving and holding the same,
agrees with the 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 Debt
Securities in accordance with the provisions of subsection (b) of this Section
4.02, 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 5.01. Events of Default.


                  The following events shall be "Events of Default" with respect
to Debt Securities:

                  (a) the Company defaults in the payment of any interest upon
any Debt Security when it becomes due and payable, and continuance of such
default for a period of 30 days; for the avoidance of doubt, an extension of any
interest payment period by the Company in accordance with Section 2.11 of this
Indenture shall not constitute a default under this clause 5.01(a); or

                  (b) the Company defaults in the payment of all or any part of
the principal of (or premium, if any, on) any Debt Securities as and when the
same shall become due and payable either at maturity, upon redemption, by
declaration of acceleration pursuant to Section 5.01 of this Indenture or
otherwise; or

                  (c) the Company defaults in the performance of, or breaches,
any of its covenants or agreements in Sections 3.06, 3.07, 3.08 or 3.09 of 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 90 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 not less than 25% in aggregate
principal amount of the outstanding Debt Securities, 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 having jurisdiction in the premises shall enter a
decree or order for relief in respect of the Company in an involuntary case
under any applicable bankruptcy, insolvency or other similar law now or
hereafter in effect, or appoints a receiver, liquidator, assignee, custodian,
trustee, sequestrator (or similar official) of the Company or for any
substantial part of its property, or orders 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 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,

24
<PAGE>

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 (1) the distribution of the Debt Securities
to holders of the Trust Securities in liquidation of their interests in the
Trust, (2) the redemption of all of the outstanding Trust Securities or (3)
certain mergers, consolidations or amalgamations, each as permitted by the
Declaration.

                  If an Event of Default occurs and is continuing with respect
to the Debt Securities, then, and in each and every such case, unless the
principal of the Debt Securities shall have already become due and payable,
either the Trustee or the holders of not less than 25% in aggregate principal
amount of the Debt Securities 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 Debt Securities and the interest accrued, but unpaid,
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 Debt Securities 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) the Company shall pay or shall deposit with the Trustee a sum
sufficient to pay all matured installments of interest upon all the Debt
Securities and all payments on the Debt Securities which shall have become due
otherwise than by acceleration (with interest upon all such payments and
Deferred Interest, to the extent permitted by law) 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 6.06, if any, and (ii) all Events of
Default under this Indenture, other than the non-payment of the payments on Debt
Securities 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 Debt Securities 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 Debt Securities 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
Debt Securities shall continue as though no such proceeding had been taken.

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<PAGE>

SECTION 5.02. Payment of Debt Securities on Default; Suit Therefor.

                  The Company covenants that upon the occurrence of an Event of
Default pursuant to clause 5.01(a) or 5.01(b) and upon demand of the Trustee,
the Company will pay to the Trustee, for the benefit of the holders of the Debt
Securities, the whole amount that then shall have become due and payable on all
Debt Securities including Deferred Interest accrued on the Debt Securities; 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 6.06. 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 Debt Securities and collect in the manner provided by
law out of the property of the Company or any other obligor on such Debt
Securities 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 Debt
Securities 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 Debt Securities, or to the creditors or property of the Company
or such other obligor, the Trustee, irrespective of whether the principal of the
Debt Securities 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 5.02,
shall be entitled and empowered, by intervention in such proceedings or
otherwise, to file and prove a claim or claims for the whole amount of principal
and interest owing and unpaid in respect of the Debt Securities and, 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 6.06) and of
the Securityholders allowed in such judicial proceedings relative to the Company
or any other obligor on the Debt Securities, 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 Debt Securities 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, and to collect and receive any
moneys or other property payable or deliverable on any such claims, and to
distribute the same after the deduction of its charges and expenses; and 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 6.06.

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<PAGE>

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
Debt Securities 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 Debt Securities, may be enforced by the Trustee
without the possession of any of the Debt Securities, 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 Debt Securities.

         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 Debt Securities, and it shall not be necessary to make any holders of the
Debt Securities parties to any such proceedings. SECTION 5.03. Application of
Moneys Collected by Trustee.

                  Any moneys collected by the Trustee 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 Debt Securities 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 6.06;

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

                  Third: To the payment of the amounts then due and unpaid upon
Debt Securities, 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 Debt Securities; and

         Fourth: The balance, if any, to the Company. SECTION 5.04. Proceedings
by Securityholders.

                  No holder of any Debt Security 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 Debt Securities and unless the holders of not less
than 25% in aggregate principal amount of the Debt Securities 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

27
<PAGE>

action, suit or proceeding; provided, that no holder of Debt Securities shall
have any right to prejudice the rights of any other holder of Debt Securities,
obtain priority or preference over any other such holder or enforce any right
under this Indenture except in the manner herein provided and for the equal,
ratable and common benefit of all holders of Debt Securities.

         Notwithstanding any other provisions in this Indenture, however, the
right of any holder of any Debt Security to receive payment of the principal of,
premium, if any, and interest on such Debt Security 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. 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
5.05. 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 5.06. Remedies Cumulative and Continuing.

         Except as otherwise provided in Section 2.06, 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 Debt
Securities, 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 Debt Securities, and no delay or
omission of the Trustee or of any holder of any of the Debt Securities to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right 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 5.04, 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 or
by the Securityholders. SECTION 5.07. Direction of Proceedings and Waiver of
Defaults by Majority of Securityholders.

                  The holders of a majority in aggregate principal amount of the
Debt Securities 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 Debt Securities; provided,
however, that (subject to the provisions of Section 6.01) 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

28
<PAGE>

         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. Prior to any declaration accelerating
the maturity of the Debt Securities, the holders of a majority in aggregate
principal amount of the Debt Securities at the time outstanding may on behalf of
the holders of all of the Debt Securities 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 Debt Securities, (b) in respect of covenants or
provisions hereof which cannot be modified or amended without the consent of the
holder of each Debt Security affected, or (c) in respect of the covenants
contained in Section 3.09; provided, however, that if the Debt Securities 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 preference of the 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 Debt Security 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 Debt Securities 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 5.07, said default or Event
of Default shall for all purposes of the Debt Securities and this Indenture be
deemed to have been cured and to be not continuing. SECTION 5.08. Notice of
Defaults.

         The Trustee shall, within 90 days after a Responsible Officer of the
Trustee shall have actual knowledge or received written notice of the occurrence
of a default with respect to the Debt Securities, mail to all Securityholders,
as the names and addresses of such holders appear upon the Debt Security
Register, notice of all defaults with respect to the Debt Securities 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 5.08 being
hereby defined to be the events specified in subsections (a), (b), (c), (d) and
(e) of Section 5.01, not including periods of grace, if any, provided for
therein); provided, that, except in the case of default in the payment of the
principal of, premium, if any, or interest on any of the Debt Securities, 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 5.09.
Undertaking to Pay Costs.

                  All parties to this Indenture agree, and each holder of any
Debt Security by such holder's 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

29
<PAGE>

defenses made by such party litigant; but the provisions of this Section 5.09
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 Debt Securities outstanding, or to any suit
instituted by any Securityholder for the enforcement of the payment of the
principal of (or premium, if any) or interest on any Debt Security against the
Company on or after the same shall have become due and payable.

                                   ARTICLE VI

         CONCERNING THE TRUSTEE SECTION 6.01. Duties and Responsibilities of
Trustee.


                  With respect to the holders of Debt Securities issued
hereunder, the Trustee, prior to the occurrence of an Event of Default with
respect to the Debt Securities and after the curing or waiving of all Events of
Default which may have occurred, with respect to the Debt Securities, undertakes
to perform such duties and only such duties as are specifically set forth in
this Indenture. In case an Event of Default with respect to the Debt Securities
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 person would exercise
or use under the circumstances in the conduct of such person's 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 the Debt Securities 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 the Debt Securities 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 Debt Securities 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 on
         their face 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;

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(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 5.07, 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;
and

                  (d) the Trustee shall not be charged with knowledge of any
Default or Event of Default with respect to the Debt Securities unless either
(1) a Responsible Officer shall have actual knowledge of such Default or Event
of Default or (2) 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 Debt
Securities or by any holder of the Debt Securities, except with respect to an
Event of Default pursuant to Sections 5.01(a) or 5.01(b) hereof (other than an
Event of Default resulting from the default in the payment of Additional
Interest or premium, if any, if the Trustee does not have actual knowledge or
written notice that such payment is due and payable), of which the Trustee shall
be deemed to have knowledge.

         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. SECTION 6.02. Reliance on Documents, Opinions, etc.

                  Except as otherwise provided in Section 6.01:

                  (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 in good faith 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 reasonably 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

31
<PAGE>

of the obligation, upon the occurrence of an Event of Default with respect to
the Debt Securities (that has not been cured or waived) to exercise with respect
to the Debt Securities 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 person would exercise or use under the circumstances in the conduct of
such person's 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 principal amount of the
outstanding Debt Securities 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; and

         (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. SECTION 6.03. No Responsibility for Recitals,
etc.

         The recitals contained herein and in the Debt Securities (except in the
certificate of authentication of the Trustee or the Authenticating Agent) shall
be 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 Debt Securities. The Trustee and the
Authenticating Agent shall not be accountable for the use or application by the
Company of any Debt Securities or the proceeds of any Debt Securities
authenticated and delivered by the Trustee or the Authenticating Agent in
conformity with the provisions of this Indenture. SECTION 6.04. Trustee,
Authenticating Agent, Paying Agents, Transfer Agents or Registrar May Own Debt
Securities.

         The Trustee or any Authenticating Agent or any Paying Agent or any
transfer agent or any Debt Security registrar, in its individual or any other
capacity, may become the owner or pledgee of Debt Securities with the same
rights it would have if it were not Trustee, Authenticating Agent, Paying Agent,
transfer agent or Debt Security registrar. SECTION 6.05. Moneys to be Held in
Trust.

                  Subject to the provisions of Section 12.04, 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

32
<PAGE>

         such moneys, if any, shall be paid from time to time to the Company
upon the written order of the Company, signed by the Chairman of the Board of
Directors, the President, the Chief Operating Officer, a Vice President, the
Treasurer or an Assistant Treasurer of the Company. SECTION 6.06. Compensation
and Expenses of Trustee.

                  The Company covenants and agrees to pay to the Trustee from
time to time, and the Trustee shall be entitled to, such compensation as shall
be agreed to in writing between the Company and the Trustee (which shall not be
limited by any provision of law in regard to the compensation of a trustee of an
express trust), and the Company will pay or reimburse the Trustee upon its
written request for all documented 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
reasonable expenses and disbursements of its counsel and of all Persons not
regularly in its employ) except any such expense, disbursement or advance that
arises from its negligence or bad faith. The Company also covenants to indemnify
each of the Trustee (including in its individual capacity) and 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), except to
the extent such loss, damage, claim, liability or expense results from the
negligence or bad faith of such indemnitee, 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 or liability in the premises. The
obligations of the Company under this Section 6.06 to compensate and indemnify
the Trustee and to pay or reimburse the Trustee for documented expenses,
disbursements and advances shall constitute additional indebtedness hereunder.
Such additional indebtedness shall be secured by a lien prior to that of the
Debt Securities 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
Debt Securities.

                  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 subsections (d), (e) or (f) of
Section 5.01, 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.
SECTION 6.07. Officers' Certificate as Evidence.

                  Except as otherwise provided in Sections 6.01 and 6.02,
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 bad faith 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 bad faith on the
part of the Trustee, shall be full warrant to the

33
<PAGE>

         Trustee for any action taken or omitted by it under the provisions of
this Indenture upon the faith thereof. SECTION 6.08. Eligibility of Trustee.


                  The Trustee hereunder shall at all times be a U.S. Person that
is a banking corporation or national association organized and doing business
under the laws of the United States of America or any state thereof or of the
District of Columbia and authorized under such laws to exercise corporate trust
powers, having a combined capital and surplus of at least fifty million U.S.
dollars ($50,000,000) and subject to supervision or examination by federal,
state, or District of Columbia authority. If such corporation or national
association 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 6.08 the combined capital and surplus of such
corporation or national association 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, notwithstanding that such corporation or national association shall be
otherwise eligible and qualified under this Article.

                  In case at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section 6.08, the Trustee shall resign
immediately in the manner and with the effect specified in Section 6.09.

         If the Trustee has or shall acquire any "conflicting interest" within
the meaning of Section 310(b) of the Trust Indenture Act, the Trustee shall
either eliminate such interest or resign, to the extent and in the manner
provided by, and subject to this Indenture. SECTION 6.09. 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 Debt Securities at their addresses as they shall appear on the
Debt Security 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 Debt Security or Debt
Securities for at least six months may, subject to the provisions of Section
5.09, on behalf of himself or herself 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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<PAGE>

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

                           (1) the Trustee shall fail to comply with the
                  provisions of the last paragraph of Section 6.08 after written
                  request therefor by the Company or by any Securityholder who
                  has been a bona fide holder of a Debt Security or Debt
                  Securities for at least six months,

                           (2) the Trustee shall cease to be eligible in
                  accordance with the provisions of Section 6.08 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 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 5.09, if no successor Trustee shall have been so appointed
and have accepted appointment within 30 days of the occurrence of any of (1),
(2) or (3) above, any Securityholder who has been a bona fide holder of a Debt
Security or Debt Securities for at least six months may, on behalf of himself or
herself 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 a successor Trustee.

                  (c) Upon prior written notice to the Company and the Trustee,
the holders of a majority in aggregate principal amount of the Debt Securities
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 ten 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 6.09 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 6.09 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 6.09
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
Debt Securities of its predecessor hereunder, with like effect as if originally
named as Trustee herein;

35
<PAGE>

but, nevertheless, on the written request of the Company or of the successor
Trustee, the Trustee ceasing to act shall, upon payment of the amounts then due
it pursuant to the provisions of Section 6.06, 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 hereunder. 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 6.06.

                  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 Debt Securities 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 6.10 unless at the time of such acceptance such successor Trustee
shall be eligible and qualified under the provisions of Section 6.08.

                  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 Debt Securities at their addresses as they
shall appear on the Debt Security Register. If the Company fails to mail such
notice within ten 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, that such corporation shall be
otherwise eligible and qualified under this Article.

36
<PAGE>

         In case at the time such successor to the Trustee shall succeed to the
trusts created by this Indenture any of the Debt Securities 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 Debt
Securities so authenticated; and in case at that time any of the Debt Securities
shall not have been authenticated, any successor to the Trustee may authenticate
such Debt Securities 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 Debt Securities 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 Debt Securities 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 Debt Securities
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 Debt Securities; provided, 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 Debt
Securities. 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 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 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
Debt Securities 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

37
<PAGE>

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 Debt Securities as
the names and addresses of such holders appear on the Debt Security 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 Debt Securities 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 7.01. Action by Securityholders.


                  Whenever in this Indenture it is provided that the holders of
a specified percentage in aggregate principal amount of the Debt Securities 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
Debt Securities 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 Debt
Securities 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 for the purposes of determining whether Securityholders of the
requisite proportion of outstanding Debt Securities 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 Debt Securities 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 six
months after the record date.

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<PAGE>

SECTION 7.02. Proof of Execution by Securityholders.

                  Subject to the provisions of Sections 6.01, 6.02 and 8.05,
proof of the execution of any instrument by a Securityholder or such
Securityholder's 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 Debt
Securities shall be proved by the Debt Security Register or by a certificate of
the Debt Security 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 8.06. SECTION 7.03. Who Are Deemed Absolute Owners.

         Prior to due presentment for registration of transfer of any Debt
Security, the Company, the Trustee, any Authenticating Agent, any Paying Agent,
any transfer agent and any Debt Security registrar may deem the Person in whose
name such Debt Security shall be registered upon the Debt Security Register to
be, and may treat such Person as, the absolute owner of such Debt Security
(whether or not such Debt Security shall be overdue) for the purpose of
receiving payment of or on account of the principal of, premium, if any, and
interest on such Debt Security 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 Debt Security registrar shall be affected by any
notice to the contrary. All such payments so made to any holder for the time
being or upon such holder's 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 Debt Security. SECTION 7.04. Debt Securities Owned by
Company Deemed Not Outstanding.

                  In determining whether the holders of the requisite aggregate
principal amount of Debt Securities have concurred in any direction, consent or
waiver under this Indenture, Debt Securities which are owned by the Company or
any other obligor on the Debt Securities 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 Debt Securities shall be disregarded and
deemed not to be outstanding for the purpose of any such determination;
provided, that for the purposes of determining whether the Trustee shall be
protected in relying on any such direction, consent or waiver, only Debt
Securities which a Responsible Officer of the Trustee actually knows are so
owned shall be so disregarded. Debt Securities so owned which have been pledged
in good faith may be regarded as outstanding for the purposes of this Section
7.04 if the pledgee shall establish to the satisfaction of the Trustee the
pledgee's right to vote such Debt Securities 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.

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<PAGE>

SECTION 7.05. Revocation of Consents; Future Holders Bound.

                  At any time prior to (but not after) the evidencing to the
Trustee, as provided in Section 7.01, of the taking of any action by the holders
of the percentage in aggregate principal amount of the Debt Securities specified
in this Indenture in connection with such action, any holder (in cases where no
record date has been set pursuant to Section 7.01) or any holder as of an
applicable record date (in cases where a record date has been set pursuant to
Section 7.01) of a Debt Security (or any Debt Security issued in whole or in
part in exchange or substitution therefor) the serial number of which is shown
by the evidence to be included in the Debt Securities 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
7.02, revoke such action so far as concerns such Debt Security (or so far as
concerns the principal amount represented by any exchanged or substituted Debt
Security). Except as aforesaid any such action taken by the holder of any Debt
Security shall be conclusive and binding upon such holder and upon all future
holders and owners of such Debt Security, and of any Debt Security 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
Debt Security or any Debt Security issued in exchange or substitution therefor.

                                  ARTICLE VIII

         SECURITYHOLDERS' MEETINGS SECTION 8.01. 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 9.02; 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 Debt Securities
under any other provision of this Indenture or under applicable law. SECTION
8.02. Call of Meetings by Trustee.

                  The Trustee may at any time call a meeting of Securityholders
to take any action specified in Section 8.01, to be held at such time and at
such place in New York or Wilmington, Delaware, as the Trustee shall determine.
Notice of every meeting of the Securityholders, setting

40
<PAGE>

         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 Debt
Securities affected at their addresses as they shall appear on the Debt
Securities Register. Such notice shall be mailed not less than 20 nor more than
180 days prior to the date fixed for the meeting. SECTION 8.03. 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 Debt Securities, 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 in The Dalles, Oregon for such meeting and may call such meeting to take
any action authorized in Section 8.01, by mailing notice thereof as provided in
Section 8.02. SECTION 8.04. Qualifications for Voting.

         To be entitled to vote at any meeting of Securityholders a Person shall
be (a) a holder of one or more Debt Securities 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 Debt Securities. The only Persons who shall be
entitled to be present or to speak at any meeting of 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 8.05. 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 Debt Securities
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 deem appropriate.

                  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 8.03, 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 at the meeting.

                  Subject to the provisions of Section 7.04, at any meeting each
holder of Debt Securities with respect to which such meeting is being held or
proxy therefor shall be entitled to one vote for each $1,000 principal amount of
Debt Securities held or represented by such holder; provided, however, that no
vote shall be cast or counted at any meeting in respect of any Debt Security
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 Debt Securities held by such chairman or instruments in writing as
aforesaid duly designating

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<PAGE>

         such chairman as the Person to vote on behalf of other Securityholders.
Any meeting of Securityholders duly called pursuant to the provisions of Section
8.02 or 8.03 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 8.06. Voting.

                  The vote upon any resolution submitted to any meeting of
holders of Debt Securities 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 Debt Securities 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 8.02. The record
shall show the serial numbers of the Debt Securities 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 8.07. Quorum; Actions.

                  The Persons entitled to vote a majority in outstanding
principal amount of the Debt Securities 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 outstanding principal amount of the Debt
Securities, the Persons holding or representing such specified percentage in
outstanding principal amount of the Debt Securities will constitute a quorum. In
the absence of a quorum within 30 minutes of the time appointed for any such
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 8.02, except that
such notice need be given only once not less than five 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 outstanding principal amount of the Debt Securities which shall constitute a
quorum.

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<PAGE>

Except as limited by the proviso in the first paragraph of Section 9.02, 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 not less than a majority in outstanding principal amount of the Debt
Securities; provided, however, that, except as limited by the proviso in the
first paragraph of Section 9.02, any resolution with respect to any consent,
waiver, request, demand, notice, authorization, direction or other action that
this Indenture expressly provides may be given by the holders of not less than a
specified percentage in outstanding principal amount of the Debt Securities 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
not less than such specified percentage in outstanding principal amount of the
Debt Securities.

                  Any resolution passed or decision taken at any meeting of
holders of Debt Securities 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 9.01. 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 corporation to the
Company, or successive successions, and the assumption by the successor
corporation 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 Debt
Securities as the Board of Directors shall consider to be for the protection of
the holders of such Debt Securities, 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 or
questions arising under this Indenture; provided, that any such action shall not
adversely affect the interests of the holders of the Debt Securities;

43
<PAGE>

(d) to add to, delete from, or revise the terms of Debt Securities, including,
without limitation, any terms relating to the issuance, exchange, registration
or transfer of Debt Securities, including to provide for transfer procedures and
restrictions substantially similar to those applicable to the Capital
Securities, as required by Section 2.05 (for purposes of assuring that no
registration of Debt Securities is required under the Securities Act of 1933, as
amended); provided, that any such action shall not adversely affect the
interests of the holders of the Debt Securities then outstanding (it being
understood, for purposes of this proviso, that transfer restrictions on Debt
Securities substantially similar to those applicable to Capital Securities shall
not be deemed to adversely affect the holders of the Debt Securities);

                  (e) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee with respect to the Debt Securities 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, pursuant to the requirements of Section 6.10;

                  (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 Debt Securities, to establish the form of any
certifications required to be furnished pursuant to the terms of this Indenture
or the Debt Securities, or to add to the rights of the holders of Debt
Securities.

                  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
9.01 may be executed by the Company and the Trustee without the consent of the
holders of any of the Debt Securities at the time outstanding, notwithstanding
any of the provisions of Section 9.02. SECTION 9.02. Supplemental Indentures
with Consent of Securityholders.

                  With the consent (evidenced as provided in Section 7.01) of
the holders of not less than a majority in aggregate principal amount of the
Debt Securities 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 (which shall conform to the provisions of the
Trust Indenture Act, then in effect, applicable to indentures qualified
thereunder) 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 Debt Securities; provided, however, that no such supplemental indenture
shall without such consent of the holders of each Debt Security then outstanding
and affected thereby (i) extend the fixed maturity of any Debt Security, or
reduce the principal amount thereof or any premium

44
<PAGE>

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 Debt Securities, 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 Debt Securities the holders of which are required to consent to
any such supplemental indenture; and provided, further, that if the Debt
Securities are held by the Trust or a trustee of such trust, such supplemental
indenture shall not be effective until the holders of a majority in liquidation
preference of the Trust Securities shall have consented to such supplemental
indenture; provided, further, that if the consent of the Securityholder of each
outstanding Debt Security 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 Debt Security 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 9.02 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof. SECTION 9.03. 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 Debt Securities 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 9.04. Notation on
Debt Securities.

                  Debt Securities authenticated and delivered after the
execution of any supplemental indenture pursuant to the provisions of this
Article IX may bear a notation as to

45

<PAGE>

         any matter provided for in such supplemental indenture. If the Company
or the Trustee shall so determine, new Debt Securities 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 Debt Securities then
outstanding. SECTION 9.05. Evidence of Compliance of Supplemental Indenture to
be Furnished to Trustee.

                  The Trustee, subject to the provisions of Sections 6.01 and
6.02, shall, in addition to the documents required by Section 14.06, 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 10.01. Optional Redemption.


         At any time the Company shall have the right, subject to the receipt by
the Company of prior approval from the Federal Reserve, if then required under
applicable capital guidelines or policies of the Federal Reserve, to redeem the
Debt Securities, in whole or in part, on any April 7, July 7, October 7 or
January 7 on or after January 7, 2008 (the "Redemption Date"), at the Redemption
Price. SECTION 10.02. 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 from the
Federal Reserve if then required under applicable capital guidelines or policies
of the Federal Reserve, to redeem the Debt Securities, in whole but not in part,
at any time within 90 days following the occurrence of such Special Event (the
"Special Redemption Date"), at the Special Redemption Price. SECTION 10.03.
Notice of Redemption; Selection of Debt Securities.

                  In case the Company shall desire to exercise the right to
redeem all, or, as the case may be, any part of the Debt Securities, it shall
fix a date for redemption and shall mail a notice of such redemption at least 30
and not more than 60 days prior to the date fixed for redemption to the holders
of Debt Securities so to be redeemed as a whole or in part at their last
addresses as the same appear on the Debt Security 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

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<PAGE>

mail or any defect in the notice to the holder of any Debt Security designated
for redemption as a whole or in part shall not affect the validity of the
proceedings for the redemption of any other Debt Security.

                  Each such notice of redemption shall specify the CUSIP number,
if any, of the Debt Securities to be redeemed, the date fixed for redemption,
the redemption price at which Debt Securities are to be redeemed, the place or
places of payment, that payment will be made upon presentation and surrender of
such Debt Securities, 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 Debt Securities are to be redeemed the notice of redemption
shall specify the numbers of the Debt Securities to be redeemed. In case the
Debt Securities 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 Debt
Security, a new Debt Security or Debt Securities 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 the Special Redemption Date specified in the notice of redemption given as
provided in this Section, 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 all the Debt Securities so called for redemption at the appropriate
redemption price, together with accrued interest to the date fixed for
redemption.

         The Company will give the Trustee notice not less than 45 nor more than
60 days prior to the redemption date as to the redemption price at which the
Debt Securities are to be redeemed and the aggregate principal amount of Debt
Securities to be redeemed and the Trustee shall select, in such manner as in its
sole discretion it shall deem appropriate and fair, the Debt Securities or
portions thereof (in integral multiples of $1,000) to be redeemed. SECTION
10.04. Payment of Debt Securities Called for Redemption.

                  If notice of redemption has been given as provided in Section
10.03, the Debt Securities or portions of Debt Securities with respect to which
such notice has been given shall become due and payable on the Redemption Date
or the Special Redemption Date (as the case may be) and at the place or places
stated in such notice at the applicable redemption price, together with interest
accrued to the date fixed for redemption, and on and after said Redemption Date
or the Special Redemption Date (unless the Company shall default in the payment
of such Debt Securities at the redemption price, together with interest accrued
to said date) interest on the Debt Securities or portions of Debt Securities so
called for redemption shall cease to accrue. On presentation and surrender of
such Debt Securities at a place of payment specified in said notice, such Debt
Securities or the specified portions thereof shall be paid and redeemed by the
Company at the applicable redemption price, together with interest accrued
thereon to the Redemption Date or the Special Redemption Date (as the case may
be).

                  Upon presentation of any Debt Security 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 Debt
Security or Debt Securities of authorized

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<PAGE>

denominations in principal amount equal to the unredeemed portion of the Debt
Security so presented.

                                   ARTICLE XI

         CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE SECTION 11.01.
Company May Consolidate, etc., on Certain Terms.

         Nothing contained in this Indenture or in the Debt Securities shall
prevent any consolidation or merger of the Company with or into any other
corporation or corporations (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 corporation (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
all payments due on all of the Debt Securities 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 reasonably
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 11.02. 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 reasonably
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 Debt Securities 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 the Debt Securities. Such successor entity thereupon may cause
to be signed, and may issue either in its own name or in the name of the
Company, any or all of the Debt Securities 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 Debt Securities 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 Debt Securities which such successor entity
thereafter shall cause to be signed and delivered to the Trustee or the
Authenticating Agent for that purpose. All the Debt Securities so issued shall
in all respects have the same legal rank and benefit under this Indenture

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<PAGE>

         as the Debt Securities theretofore or thereafter issued in accordance
with the terms of this Indenture as though all of such Debt Securities had been
issued at the date of the execution hereof. SECTION 11.03. Opinion of Counsel to
be Given to Trustee.

                  The Trustee, subject to the provisions of Sections 6.01 and
6.02, shall receive, in addition to the Opinion of Counsel required by Section
9.05, 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 12.01. Discharge of
Indenture.

                  When (a) the Company shall deliver to the Trustee for
cancellation all Debt Securities theretofore authenticated (other than any Debt
Securities which shall have been destroyed, lost or stolen and which shall have
been replaced or paid as provided in Section 2.06) and not theretofore canceled,
or (b) all the Debt Securities 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 one year or are to be called for
redemption within one 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 Debt Securities (other than any
Debt Securities which shall have been destroyed, lost or stolen and which shall
have been replaced or paid as provided in Section 2.06) 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 Debt
Securities (1) theretofore repaid to the Company in accordance with the
provisions of Section 12.04, 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 2.05, 2.06,
3.01, 3.02, 3.04, 6.06, 6.09 and 12.04 hereof, which shall survive until such
Debt Securities shall mature or are redeemed, as the case may be, and are paid.
Thereafter, Sections 6.06, 6.09 and 12.04 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,
however, hereby agreeing to reimburse the Trustee for any costs or expenses
thereafter reasonably and properly incurred by the Trustee in connection with
this Indenture or the Debt Securities.

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<PAGE>

SECTION 12.02. Deposited Moneys to be Held in Trust by Trustee.

         Subject to the provisions of Section 12.04, all moneys deposited with
the Trustee pursuant to Section 12.01 shall be held in trust 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
Debt Securities 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 12.03. Paying Agent to Repay Moneys Held.

         Upon the satisfaction and discharge of this Indenture, all moneys then
held by any Paying Agent of the Debt Securities (other than the Trustee) shall,
upon demand of the Company, be repaid to the Company or paid to the Trustee, and
thereupon such Paying Agent shall be released from all further liability with
respect to such moneys. SECTION 12.04. 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 Debt
Securities and not applied but remaining unclaimed by the holders of Debt
Securities for two years after the date upon which the principal of, and
premium, if any, or interest on such Debt Securities, as the case may be, shall
have become due and payable, shall be repaid to the Company by the Trustee or
such Paying Agent on written demand; and the holder of any of the Debt
Securities 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 13.01. Indenture and Debt Securities
Solely Corporate Obligations.

                  No recourse for the payment of the principal of or premium, if
any, or interest on any Debt Security, 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 Debt Security, or because of the creation of any
indebtedness represented thereby, shall be had against any incorporator,
stockholder, officer, director, employee or agent, as such, past, present or
future, of the Company or of any predecessor or successor corporation of the
Company, either directly or through the Company or any successor corporation 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 Debt Securities.

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<PAGE>

ARTICLE XIV

         MISCELLANEOUS PROVISIONS SECTION 14.01. Successors.

         All the covenants, stipulations, promises and agreements of the Company
contained in this Indenture shall bind its successors and assigns whether so
expressed or not. SECTION 14.02. 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. SECTION 14.03.
Surrender of Company Powers.

         The Company by instrument in writing executed by authority of 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 14.04. Addresses for Notices, etc.

                  Any notice or demand which by any provision of this Indenture
is required or permitted to be given or served by the Trustee or by the
Securityholders on 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 such purpose) to the Company at:

                  Columbia Bancorp
                  401 East Third Street, Ste. 200
                  The Dalles, OR 97058
                  Attention: Greg Spear

                  Any notice, direction, request 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
Wells Fargo Bank, National Association at:

                  919 Market Street
                  Suite 700
                  Wilmington, DE 19801
                  Attention: Corporate Trust Division

51
<PAGE>

SECTION 14.05. Governing Law.

         This Indenture and each Debt Security 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 14.06. 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 (except that no such Opinion of Counsel is
required to be furnished to the Trustee in connection with the authentication
and issuance of Debt Securities issued on the date of this Indenture).

         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 (except certificates delivered pursuant to
Section 3.05) shall include (a) a statement that the person making such
certificate or opinion has read such covenant or condition; (b) 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; (c) a statement that, in the opinion of such person, he or she has made
such examination or investigation as is necessary to enable him or her to
express an informed opinion as to whether or not such covenant or condition has
been complied with; and (d) a statement as to whether or not, in the opinion of
such person, such condition or covenant has been complied with. SECTION 14.07.
Non-Business Days.

         In any case where the date of payment of interest on or principal of
the Debt Securities is not a Business Day, the payment of such interest on or
principal of the Debt Securities need not be made on such date but may be made
on the next succeeding Business Day, with the same force and effect as if made
on the date of payment, except if such Business Day is in the next succeeding
calendar year, such payment will be made on the immediately preceding Business
Day. SECTION 14.08. 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 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 14.09. 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.

52
<PAGE>

SECTION 14.10. Separability.

         In case any one or more of the provisions contained in this Indenture
or in the Debt Securities 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 Debt
Securities, but this Indenture and such Debt Securities shall be construed as if
such invalid or illegal or unenforceable provision had never been contained
herein or therein. SECTION 14.11. Assignment.

         Subject to Article XI, 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 thereto. SECTION 14.12.
Acknowledgment of Rights.

                  The Company acknowledges that, with respect to any Debt
Securities 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 Debt Securities held as the assets of the Trust after
the holders of a majority in Liquidation Amount of the Capital Securities of the
Trust have so directed in writing 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 Institutional 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 Debt Securities on the date
such interest (or premium, if any) or principal is otherwise due and payable (or
in the case of redemption, on the redemption date), the Company acknowledges
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 Debt
Securities 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 Debt Securities.

                                   ARTICLE XV

         SUBORDINATION OF DEBT SECURITIES SECTION 15.01. Agreement to
Subordinate.


                  The Company covenants and agrees, and each holder of Debt
Securities issued hereunder and under any supplemental indenture (the
"Additional Provisions") by such Securityholder's acceptance thereof likewise
covenants and agrees, that all Debt Securities shall be issued subject to the
provisions of this Article XV; and each holder of a Debt Security,

53
<PAGE>

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 payments due on all Debt
Securities issued hereunder and under any Additional Provisions 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. SECTION 15.02. 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 applicable 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 payments due on the Debt Securities.

         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 15.02, such payment shall, subject to Section 15.06,
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 15.03. 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
the Debt Securities; and 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

54
<PAGE>

this Indenture if received by them or it, directly to the holders of Senior
Indebtedness of the Company (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.

                  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 of the Company 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 of the
Company 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.

         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 Debt Securities to the payment of all Senior Indebtedness of the Company,
that may at the time be outstanding, provided, that (a) such Senior Indebtedness
is assumed by the new corporation, if any, resulting from any such
reorganization or readjustment, and (b) 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 IX of this Indenture shall not be
deemed a dissolution, winding-up, liquidation or reorganization for the purposes
of this Section 15.03 if such other corporation shall, as a part of such
consolidation, merger, conveyance or transfer, comply with the conditions stated
in Article IX of this Indenture. Nothing in Section 15.02 or in this Section
15.03 shall apply to claims of, or payments to, the Trustee under or pursuant to
Section 6.06 of this Indenture. SECTION 15.04. Subrogation.

                  Subject to the payment in full of all Senior Indebtedness of
the Company, 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 all payments due on the Debt Securities shall be paid in
full; and, for the purposes of such subrogation, no payments or distributions to
the holders of such Senior

55
<PAGE>

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 Debt Securities 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 Debt 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, any Additional Provisions or in the Debt Securities is intended to or
shall impair, as between the Company, its creditors other than the holders of
Senior Indebtedness of the Company, and the holders of the Debt Securities, the
obligation of the Company, which is absolute and unconditional, to pay to the
holders of the Debt Securities all payments on the Debt Securities 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 Debt
Securities and creditors of the Company, other than the holders of Senior
Indebtedness of the Company, nor shall anything herein or therein prevent the
Trustee or the holder of any Debt Security 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. SECTION 15.05. 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 15.06. 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 moneys to or by
the Trustee in respect of the Debt Securities pursuant to the provisions of this
Article XV. Notwithstanding the provisions of this

56
<PAGE>

Article XV or any other provision of this Indenture or any Additional
Provisions, the Trustee shall not be charged with knowledge of the existence of
any facts that would prohibit the making of any payment of moneys to or by the
Trustee in respect of the Debt Securities 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 15.06 at
least two 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 Debt
Security), 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 two 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 or herself to be a holder of Senior
Indebtedness of the Company (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
15.07. 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 or any Additional Provisions
shall deprive the Trustee of any of its rights as such holder.

                  With respect to the holders of Senior Indebtedness of the
Company, 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 or any Additional Provisions
against the Trustee. The Trustee shall not owe or 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.

57
<PAGE>

         Nothing in this Article XV shall apply to claims of, or payments to,
the Trustee under or pursuant to Section 6.06. SECTION 15.08. Subordination May
Not Be Impaired.

                  No right of any present or future holder of any Senior
Indebtedness of the Company 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 of the Company 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 Debt Securities to the holders
of such Senior Indebtedness, do any one or more of the following: (a) 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; (b) sell, exchange, release
or otherwise deal with any property pledged, mortgaged or otherwise securing
such Senior Indebtedness; (c) release any Person liable in any manner for the
collection of such Senior Indebtedness; and (d) exercise or refrain from
exercising any rights against the Company, and any other Person.

                  Wells Fargo Bank, National Association, in its capacity as
Trustee, hereby accepts the trusts in this Indenture declared and provided, upon
the terms and conditions herein above set forth.

58
<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.

                                COLUMBIA BANCORP

                                By Name: Title:

                                Wells Fargo Bank, National Association, as
                                   Trustee

                                By Name: Title:

<PAGE>

1

                                                                       EXHIBIT A

        FORM OF FLOATING RATE JUNIOR SUBORDINATED DEBT SECURITY DUE 2033

                           [FORM OF FACE OF SECURITY]

                  THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAWS. 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. THE HOLDER OF THIS SECURITY BY ITS
ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY ONLY
(A) TO THE COMPANY, (B) PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE
144A"), TO A PERSON THE HOLDER REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE
TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) PURSUANT TO AN EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT TO AN "ACCREDITED
INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (a) (1), (2), (3) OR (7) OF RULE
501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT,
OR FOR THE ACCOUNT OF AN "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 (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE
COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES
(C) OR (D) 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 AGREES THAT IT WILL COMPLY WITH THE FOREGOING
RESTRICTIONS.

                  THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES,
REPRESENTS AND WARRANTS THAT IT WILL NOT ENGAGE IN HEDGING TRANSACTIONS
INVOLVING THIS SECURITY UNLESS SUCH TRANSACTIONS ARE IN COMPLIANCE WITH THE
SECURITIES ACT.

                  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

<PAGE>

A-1-1

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 THIS
SECURITY OR ANY INTEREST THEREIN, UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE
FOR THE 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 THIS SECURITY 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.

                  IN CONNECTION WITH ANY TRANSFER, THE HOLDER OF THIS SECURITY
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.

                  THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN
BLOCKS HAVING A PRINCIPAL AMOUNT OF NOT LESS THAN $100,000 AND MULTIPLES OF
$1,000 IN EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A BLOCK
HAVING A PRINCIPAL AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND
OF NO LEGAL EFFECT WHATSOEVER. ANY SUCH PURPORTED TRANSFEREE SHALL BE DEEMED NOT
TO BE THE HOLDER OF THIS SECURITY FOR ANY PURPOSE, INCLUDING, BUT NOT LIMITED
TO, THE RECEIPT OF DISTRIBUTIONS ON THIS SECURITY, AND SUCH PURPORTED TRANSFEREE
SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN THIS SECURITY.

                  THIS OBLIGATION IS NOT A DEPOSIT AND IS NOT INSURED BY THE
UNITED STATES OR ANY AGENCY OR FUND OF THE UNITED STATES, INCLUDING THE FEDERAL
DEPOSIT INSURANCE CORPORATION (THE "FDIC"). THIS OBLIGATION IS SUBORDINATED TO
THE CLAIMS OF DEPOSITORS AND THE CLAIMS OF GENERAL AND SECURED CREDITORS OF THE
COMPANY, IS INELIGIBLE AS COLLATERAL FOR A LOAN BY THE COMPANY OR ANY OF ITS
SUBSIDIARIES AND IS NOT SECURED.

<PAGE>

A-1-2

Floating Rate Junior Subordinated Debt Security due 2033

                                       of

                                COLUMBIA BANCORP

                  Columbia Bancorp, a bank holding company incorporated in
Oregon (the "Company"), for value received promises to pay to Wells Fargo Bank,
National Association, not in its individual capacity but solely as Institutional
Trustee for Columbia Bancorp Trust I, a Delaware statutory trust (the "Holder"),
or registered assigns, the principal sum of Four Million One Hundred Twenty-Four
Thousand Dollars ($4,124,000) on January 7, 2033 and to pay interest on said
principal sum from December 19, 2002, 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 April 7, July 7, October 7 and January 7 of each year commencing
April 7, 2003, at a variable per annum rate equal to LIBOR (as defined in the
Indenture) plus 3.30% (the "Interest Rate") until the principal hereof shall
have become due and payable, 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 at an annual rate equal
to the Interest Rate in effect for each such Extension Period compounded
quarterly. The amount of interest payable on any Interest Payment Date shall be
computed on the basis of a 360-day year and the actual number of days elapsed in
the relevant interest period. In the event that any date on which the principal
or interest is payable on this Debt Security is not a Business Day, then payment
payable on such date will be made on the next succeeding day that is a 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 such date. 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 Debt Security (or one or more Predecessor Securities, as
defined in said Indenture) is registered at the close of business on the regular
record date for such interest installment, except that interest and any Deferred
Interest payable on the Maturity Date shall be paid to the Person to whom
principal is paid. Any such interest installment not punctually paid or duly
provided for shall forthwith cease to be payable to the registered holders on
such regular record date and may be paid to the Person in whose name this Debt
Security (or one or more Predecessor Debt Securities) is registered at the close
of business on a special record date to be fixed by the Trustee for the payment
of such defaulted interest, notice whereof shall be given to the registered
holders of the Debt Securities not less than 10 days prior to such special
record date, all as more fully provided in the Indenture. The principal of and
interest on this Debt Security 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 at the option of the Company by
check mailed to the registered holder at such address as shall appear in the
Debt Security Register or by wire transfer to an account appropriately
designated by the holder hereof. Notwithstanding the foregoing, so long as

<PAGE>

the holder of this Debt Security is the Institutional Trustee, the payment of
the principal of and interest on this Debt Security will be made in immediately
available funds at such place and to such account as may be designated by the
Trustee.

<PAGE>

A-1-3

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 Debt Securities by extending the interest
payment period on the Debt Securities at any time and from time to time during
the term of the Debt Securities, for up to 20 consecutive quarterly periods
(each such extended interest payment period, an "Extension Period"), during
which Extension Period no interest shall be due and payable (except any
Additional Interest that may be due and payable). During any Extension Period,
interest will continue to accrue on the Debt Securities, and interest on such
accrued interest (such accrued interest and interest thereon referred to herein
as "Deferred Interest") will accrue at an annual rate equal to the Interest Rate
in effect for each such Extension Period, compounded quarterly from the date
such Deferred Interest would have been payable were it not for the Extension
Period, to the extent permitted by law. No Extension Period may end on a date
other than an Interest Payment Date. At the end of any such Extension Period the
Company shall pay all Deferred Interest then accrued and unpaid on the Debt
Securities; provided, however, that no Extension Period may extend beyond the
Maturity Date and provided, further, however, during any such Extension Period,
the Company may not (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 capital stock or (ii) make any payment on or repay, repurchase or
redeem any debt securities of the Company that rank pari passu in all respects
with or junior in interest to the Debt Securities (other than (a) repurchases,
redemptions or other acquisitions of shares of capital stock of the Company (A)
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, (B) in connection with a dividend reinvestment or
stockholder stock purchase plan or (C) 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
stockholder's rights plan, or the issuance of rights, stock or other property
under any stockholder's rights plan, or the redemption or repurchase of rights
pursuant thereto, or (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). 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 Deferred Interest, the Company may
commence a new Extension Period, subject to the foregoing requirements. No
interest or Deferred Interest shall be due and payable during an Extension
Period, except at the end thereof, but Deferred Interest shall accrue upon each
installment of interest that would otherwise have been due and payable during
such Extension Period until such installment is paid. The Company must give the
Trustee notice of its election to begin such Extension Period at least one
Business Day prior to the earlier of (i) the next succeeding date on which
interest on the Debt Securities

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A-1-4

would have been payable except for the election to begin such Extension Period
or (ii) the date such interest is payable, but in any event not later than the
related regular record date.

                  The indebtedness evidenced by this Debt Security 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 Debt Security is
issued subject to the provisions of the Indenture with respect thereto. Each
holder of this Debt Security, by accepting the same, (a) agrees to and shall be
bound by such provisions, (b) authorizes and directs the Trustee on such
holder's behalf to take such action as may be necessary or appropriate to
acknowledge or effectuate the subordination so provided and (c) appoints the
Trustee such holder's attorney-in-fact for any and all such purposes. Each
holder hereof, by such holder's acceptance hereof, hereby waives all notice of
the acceptance of the subordination provisions contained herein and in the
Indenture by each holder of Senior Indebtedness, whether now outstanding or
hereafter incurred, and waives reliance by each such holder upon said
provisions.

                  The Company waives demand, presentment for payment, notice of
nonpayment, notice of protest, and all other notices.

                  This Debt Security shall not be entitled to any benefit under
the Indenture hereinafter referred to and shall not 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 Debt Security are continued on the
reverse side hereof and such continued provisions shall for all purposes have
the same effect as though fully set forth at this place.

<PAGE>

A-1-5

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

                                        COLUMBIA BANCORP

                                        By: Name: Title:

Dated: __________________, 2002

                          CERTIFICATE OF AUTHENTICATION

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

                                        Wells Fargo Bank, National Association,
                                        not in its individual capacity but
                                        solely as the Trustee

                             By: Authorized Officer

Dated: __________________, 2002

<PAGE>
A-1-6

[FORM OF REVERSE OF SECURITY]

                  This Debt Security is one of a duly authorized series of Debt
Securities of the Company, all issued or to be issued pursuant to an Indenture
(the "Indenture"), dated as of December 19, 2002, duly executed and delivered
between the Company and Wells Fargo Bank, National Association, as Trustee (the
"Trustee"), to which Indenture and all indentures supplemental thereto 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 Debt Securities (referred to herein as the "Debt Securities")
of which this Debt Security is a part. The summary of the terms of this Debt
Security contained herein does not purport to be complete and is qualified by
reference to the Indenture.

                  Upon the occurrence and continuation of a Tax Event, an
Investment Company Event or a Capital Treatment Event (each a "Special Event"),
this Debt Security may become due and payable, in whole but not in part, at any
time, within 90 days following the occurrence of such Tax Event, Investment
Company Event or Capital Treatment Event (the "Special Redemption Date"), as the
case may be, at the Special Redemption Price. The Company shall also have the
right to redeem this Debt Security at the option of the Company, in whole or in
part, on any April 7, July 7, October 7 or January 7 on or after January 7, 2008
(a "Redemption Date"), at the Redemption Price.

                  Any redemption pursuant to the preceding paragraph will be
made, subject to the receipt by the Company of prior approval from the Board of
Governors of the Federal Reserve System (the "Federal Reserve") if then required
under applicable capital guidelines or policies of the Federal Reserve, upon not
less than 30 days' nor more than 60 days' notice. If the Debt Securities are
only partially redeemed by the Company, the Debt Securities will be redeemed pro
rata or by lot or by any other method utilized by the Trustee.

                  "Redemption Price" means 100% of the principal amount of the
Debt Securities being redeemed plus accrued and unpaid interest on such Debt
Securities to the Redemption Date or, in the case of a redemption due to the
occurrence of a Special Event, to the Special Redemption Date if such Special
Redemption Date is on or after January 7, 2008.

                  "Special Redemption Price" means (1) if the Special Redemption
Date is before January 7, 2008, the greater of (a) 100% of the principal amount
of the Debt Securities being redeemed pursuant to Section 10.02 of the Indenture
or (b) as determined by a Quotation Agent, the sum of the present values of the
principal amount payable as part of the Redemption Price with respect to a
redemption as of January 7, 2008, together with the present value of interest
payments calculated at a fixed per annum rate of interest equal to 7.125% over
the Remaining Life of such Debt Securities, 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 0.50%, plus, in the case of either (a) or (b),
accrued and unpaid interest on such Debt Securities to the Special Redemption
Date and (2) if the Special Redemption Date is on or after January 7, 2008, the
Redemption

<PAGE>

Price for such Special Redemption Date.

                  "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

<PAGE>

A-1-7

comparable to the 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 Remaining
Life. If no United States Treasury security has a maturity which is within a
period from three months before to three months after January 7, 2008, the two
most closely corresponding United States Treasury securities 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 receives fewer than five such Reference Treasury
Dealer Quotations, the average of all such Quotations.

                  "Primary Treasury Dealer" means a primary United States
Government securities dealer in New York City.

                  "Quotation Agent" means Salomon Smith Barney Inc. 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.

                  "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 Special 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 Trustee by such Reference Treasury
Dealer at 5:00 p.m., New York City time, on the third Business Day preceding
such Special Redemption Date.

                  "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 Remaining
Life (if no maturity is within three months before or after the Remaining Life,
yields for the two published maturities most closely corresponding to the
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 quarterly 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
Treasury Rate shall be calculated on the third Business Day preceding the
Special Redemption Date.

<PAGE>

A-1-8

In the event of redemption of this Debt Security in part only, a new Debt
Security or Debt Securities for the unredeemed portion hereof will be issued in
the name of the holder hereof upon the cancellation hereof.

                  In case an Event of Default, as defined in the Indenture,
shall have occurred and be continuing, the principal of all of the Debt
Securities may be declared due and payable, and upon such declaration of
acceleration 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 Debt Securities at the time outstanding
affected thereby, as specified in the Indenture, to execute supplemental
indentures for the purpose of adding any provisions to or changing in any manner
or eliminating any of the provisions of the Indenture or of any supplemental
indenture or of modifying in any manner the rights of the holders of the Debt
Securities; provided, however, that no such supplemental indenture shall, among
other things, without the consent of the holders of each Debt Security then
outstanding and affected thereby (i) extend the fixed maturity of the Debt
Securities, or reduce the principal amount thereof or any redemption premium
thereon, or reduce the rate or extend the time of payment of interest thereon,
or make payments due on the Debt Securities payable in any coin or currency
other than that provided in the Debt Securities, or impair or affect the right
of any holder of Debt Securities to institute suit for the payment thereof, or
(ii) reduce the aforesaid percentage of Debt Securities, 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 Debt Securities at the time outstanding, on behalf of all of the
holders of the Debt Securities, to waive any past default in the performance of
any of the covenants contained in the Indenture, or established pursuant to the
Indenture, and its consequences, except a default in payments due on any of the
Debt Securities. Any such consent or waiver by the registered holder of this
Debt Security (unless revoked as provided in the Indenture) shall be conclusive
and binding upon such holder and upon all future holders and owners of this Debt
Security and of any Debt Security issued in exchange herefor or in place hereof
(whether by registration of transfer or otherwise), irrespective of whether or
not any notation of such consent or waiver is made upon this Debt Security.

                  No reference herein to the Indenture and no provision of this
Debt Security or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay all payments due on this
Debt Security at the time and place and at the rate and in the money herein
prescribed.

                  As provided in the Indenture and subject to certain
limitations herein and therein set forth, this Debt Security is transferable by
the registered holder hereof on the Debt Security Register of the Company, upon
surrender of this Debt Security for registration of transfer at the office or
agency of the Trustee in Wilmington, Delaware accompanied by a written
instrument or instruments of transfer in form satisfactory to the Company or the
Trustee duly executed by the registered holder hereof or such holder's attorney
duly authorized in writing, and thereupon one or more new Debt Securities of

<PAGE>

authorized denominations and for the same aggregate principal amount will be
issued to the designated transferee or transferees. No service charge will be

<PAGE>

A-1-9

made for any such registration of transfer, but the Company may require payment
of a sum sufficient to cover any tax or other governmental charge payable in
relation thereto.

                  Prior to due presentment for registration of transfer of this
Debt Security, the Company, the Trustee, any Authenticating Agent, any Paying
Agent, any transfer agent and the Debt Security registrar may deem and treat the
registered holder hereof as the absolute owner hereof (whether or not this Debt
Security shall be overdue and notwithstanding any notice of ownership or writing
hereon) for the purpose of receiving payment of or on account of the principal
hereof and interest due hereon 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 Debt Security registrar shall be affected by any
notice to the contrary.

                  No recourse shall be had for the payment of the principal of
or the interest on this Debt Security, or for any claim based hereon, or
otherwise in respect hereof, or based on or in respect of the Indenture, against
any incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor corporation, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by the acceptance
hereof and as part of the consideration for the issuance hereof, expressly
waived and released.

                  The Debt Securities are issuable only in registered
certificated form without coupons. As provided in the Indenture and subject to
certain limitations herein and therein set forth, Debt Securities are
exchangeable for a like aggregate principal amount of Debt Securities of a
different authorized denomination, as requested by the holder surrendering the
same.

                  All terms used in this Debt Security that are defined in the
Indenture shall have the meanings assigned to them in the Indenture.

                  THE LAW OF THE STATE OF NEW YORK SHALL GOVERN THE INDENTURE
AND THE DEBT SECURITIES, WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES THEREOF.